559 Commits

Author	SHA1	Message	Date
Channagoud Kadabi	8810e5fa00	Merge remote-tracking branch 'origin/tmp-dcb6110' into 4.8 ... * origin/tmp-dcb6110: ANDROID: goldfish_sync: 32 max cmds to save stack ANDROID: sched/walt: use div_u64 instead of do_div Linux 4.9.9 drm/i915/execlists: Reset RING registers upon resume fs: break out of iomap_file_buffered_write on fatal signals iw_cxgb4: set correct FetchBurstMax for QPs x86/irq: Make irq activate operations symmetric irqdomain: Avoid activating interrupts more than once iio: health: max30100: fixed parenthesis around FIFO count check iio: dht11: Use usleep_range instead of msleep for start signal iio: health: afe4403: retrieve a valid iio_dev in suspend/resume iio: health: afe4404: retrieve a valid iio_dev in suspend/resume iio: adc: palmas_gpadc: retrieve a valid iio_dev in suspend/resume staging: greybus: timesync: validate platform state callback USB: serial: option: add device ID for HP lt2523 (Novatel E371) usb: gadget: f_fs: Assorted buffer overflow checks. usb: musb: Fix host mode error -71 regression USB: Add quirk for WORLDE easykey.25 MIDI keyboard USB: serial: pl2303: add ATEN device ID USB: serial: qcserial: add Dell DW5570 QDL KVM: x86: do not save guest-unsupported XSAVE state dmaengine: cppi41: Fix oops in cppi41_runtime_resume dmaengine: cppi41: Fix runtime PM timeouts with USB mass storage perf/x86/intel/uncore: Clean up hotplug conversion fallout HID: wacom: Fix poor prox handling in 'wacom_pl_irq' HID: hid-lg: Fix immediate disconnection of Logitech Rumblepad 2 HID: usbhid: Quirk a AMI virtual mouse and keyboard with ALWAYS_POLL iwlwifi: mvm: avoid crash on restart w/o reserved queues iwlwifi: fix double hyphen in MODULE_FIRMWARE for 8000 pinctrl: intel: merrifield: Add missed check in mrfld_config_set() pinctrl: baytrail: Debounce register is one per community Revert "vring: Force use of DMA API for ARM-based systems with legacy devices" Revert "bcma: init serial console directly from ChipCommon code" percpu-refcount: fix reference leak during percpu-atomic transition regulator: axp20x: AXP806: Fix dcdcb being set instead of dcdce vhost: fix initialization for vq->is_le mmc: sdhci: Ignore unexpected CARD_INT interrupts cgroup: don't online subsystems before cgroup_name/path() are operational can: bcm: fix hrtimer/tasklet termination in bcm op removal tracing: Fix hwlat kthread migration mm, fs: check for fatal signals in do_generic_file_read() base/memory, hotplug: fix a kernel oops in show_valid_zones() mm/memory_hotplug.c: check start_pfn in test_pages_in_a_zone() cifs: initialize file_info_lock zswap: disable changing params if init fails svcrpc: fix oops in absence of krb5 module NFSD: Fix a null reference case in find_or_create_lock_stateid() powerpc/mm: Use the correct pointer when setting a 2MB pte powerpc: Fix build failure with clang due to BUILD_BUG_ON() powerpc: Add missing error check to prom_find_boot_cpu() powerpc/eeh: Fix wrong flag passed to eeh_unfreeze_pe() libata: Fix ATA request sense libata: apply MAX_SEC_1024 to all CX1-JB*-HP devices ata: sata_mv:- Handle return value of devm_ioremap. perf/core: Fix PERF_RECORD_MMAP2 prot/flags for anonymous memory perf/core: Fix use-after-free bug crypto: arm64/aes-blk - honour iv_out requirement in CBC and CTR modes crypto: api - Clear CRYPTO_ALG_DEAD bit before registering an alg drm/nouveau/nv1a,nv1f/disp: fix memory clock rate retrieval drm/nouveau/disp/gt215: Fix HDA ELD handling (thus, HDMI audio) on gt215 drm/amdgpu/si: fix crash on headless asics pinctrl: baytrail: Add missing spinlock usage in byt_gpio_irq_handler HID: cp2112: fix gpio-callback error handling HID: cp2112: fix sleep-while-atomic xtensa: fix noMMU build on cores with MMU efi/fdt: Avoid FDT manipulation after ExitBootServices() x86/efi: Always map the first physical page into the EFI pagetables ext4: validate s_first_meta_bg at mount time PCI/ASPM: Handle PCI-to-PCIe bridges as roots of PCIe hierarchies ANDROID: sched: Add Kconfig option DEFAULT_USE_ENERGY_AWARE to set ENERGY_AWARE feature flag ANDROID: goldfish_sync: Fix sync_file_obj is NULL but dereferenced problem ANDROID: goldfish_sync: Isolate single module to fix compilation ANDROID: goldfish_sync: update defconfig for 4.9-compatible version ANDROID: goldfish_sync: upgrade to new fence sync api Linux 4.9.8 xfs: fix bmv_count confusion w/ shared extents xfs: clear _XBF_PAGES from buffers when readahead page xfs: extsize hints are not unlikely in xfs_bmap_btalloc xfs: remove racy hasattr check from attr ops xfs: verify dirblocklog correctly xfs: fix COW writeback race xfs: fix xfs_mode_to_ftype() prototype xfs: don't wrap ID in xfs_dq_get_next_id xfs: sanity check inode di_mode xfs: sanity check inode mode when creating new dentry xfs: replace xfs_mode_to_ftype table with switch statement xfs: add missing include dependencies to xfs_dir2.h xfs: sanity check directory inode di_size xfs: make the ASSERT() condition likely xfs: don't print warnings when xfs_log_force fails xfs: don't rely on ->total in xfs_alloc_space_available xfs: adjust allocation length in xfs_alloc_space_available xfs: fix bogus minleft manipulations xfs: bump up reserved blocks in xfs_alloc_set_aside net: dsa: Bring back device detaching in dsa_slave_suspend() lwtunnel: Fix oops on state free after encap module unload net: Specify the owning module for lwtunnel ops qmi_wwan/cdc_ether: add device ID for HP lt2523 (Novatel E371) WWAN card af_unix: move unix_mknod() out of bindlock r8152: don't execute runtime suspend if the tx is not empty net: mpls: Fix multipath selection for LSR use case bridge: netlink: call br_changelink() during br_dev_newlink() net/mlx5e: Do not recycle pages from emergency reserve tcp: initialize max window for a new fastopen socket ipv6: addrconf: Avoid addrconf_disable_change() using RCU read-side lock lwtunnel: fix autoload of lwt modules net: phy: bcm63xx: Utilize correct config_intr function net: fix harmonize_features() vs NETIF_F_HIGHDMA vxlan: fix byte order of vxlan-gpe port number virtio-net: restore VIRTIO_HDR_F_DATA_VALID on receiving virtio: don't set VIRTIO_NET_HDR_F_DATA_VALID on xmit net sched actions: fix refcnt when GETing of action after bind ax25: Fix segfault after sock connection timeout ip6_tunnel: Account for tunnel header in tunnel MTU ravb: do not use zero-length alignment DMA descriptor mlx4: do not call napi_schedule() without care openvswitch: maintain correct checksum state in conntrack actions tcp: fix tcp_fastopen unaligned access complaints on sparc net: systemport: Decouple flow control from __bcm_sysport_tx_reclaim net: ipv4: fix table id in getroute response net: lwtunnel: Handle lwtunnel_fill_encap failure mlxsw: pci: Fix EQE structure definition mlxsw: switchx2: Fix memory leak at skb reallocation mlxsw: spectrum: Fix memory leak at skb reallocation netvsc: add rcu_read locking to netvsc callback r8152: fix the sw rx checksum is unavailable FROMLIST: 9p: fix a potential acl leak ANDROID: sched/walt: use do_div instead of division operator ANDROID: sched: fix wrong truncation of walt_avg ANDROID: arm: Fix #if/#ifdef typo in topology.c ANDROID: arm: Fix build error "conflicting types for 'scale_cpu_capacity'" ANDROID: net: ipv6: remove unused variable ifindex in ANDROID: DEBUG: cpufreq: fix cpu_capacity tracing build for non-smp systems ANDROID: arm: topology: Define TC2 energy and provide it to the scheduler ANDROID: binder: fix format specifier for type binder_size_t Linux 4.9.7 drm/i915: Remove WaDisableLSQCROPERFforOCL KBL workaround. perf/core: Fix concurrent sys_perf_event_open() vs. 'move_group' race mm, memcg: do not retry precharge charges platform/x86: intel_mid_powerbtn: Set IRQ_ONESHOT platform/x86: mlx-platform: free first dev on error virtio_mmio: Set DMA masks appropriately memory_hotplug: make zone_can_shift() return a boolean value pinctrl: baytrail: Rectify debounce support pinctrl: uniphier: fix Ethernet (RMII) pin-mux setting for LD20 pinctrl: broxton: Use correct PADCFGLOCK offset s5k4ecgx: select CRC32 helper IB/rxe: Prevent from completer to operate on non valid QP IB/rxe: Fix rxe dev insertion to rxe_dev_list IB/umem: Release pid in error and ODP flow drm/i915: Check for NULL atomic state in intel_crtc_disable_noatomic() drm/i915: Fix calculation of rotated x and y offsets for planar formats drm/i915: Don't init hpd polling for vlv and chv from runtime_suspend() drm/i915: Don't leak edid in intel_crt_detect_ddc() drm/i915: prevent crash with .disable_display parameter drm/i915: Clear ret before unbinding in i915_gem_evict_something() v4l: tvp5150: Don't override output pinmuxing at stream on/off time v4l: tvp5150: Fix comment regarding output pin muxing v4l: tvp5150: Reset device at probe time, not in get/set format handlers pctv452e: move buffer to heap, no mutex iw_cxgb4: free EQ queue memory on last deref SUNRPC: cleanup ida information when removing sunrpc module NFSv4.0: always send mode in SETATTR after EXCLUSIVE4 NFSv4.1: Fix a deadlock in layoutget nfs: Don't increment lock sequence ID after NFS4ERR_MOVED parisc: Don't use BITS_PER_LONG in userspace-exported swab.h header ARC: [arcompact] handle unaligned access delay slot corner case ARC: udelay: fix inline assembler by adding LP_COUNT to clobber list can: ti_hecc: add missing prepare and unprepare of the clock can: c_can_pci: fix null-pointer-deref in c_can_start() - set device pointer IB/srp: fix invalid indirect_sg_entries parameter value IB/srp: fix mr allocation when the device supports sg gaps IB/iser: Fix sg_tablesize calculation IB/cxgb3: fix misspelling in header guard s390/ptrace: Preserve previous registers for short regset write s390/mm: Fix cmma unused transfer from pgste into pte RDMA/cma: Fix unknown symbol when CONFIG_IPV6 is not enabled Btrfs: remove ->{get, set}_acl() from btrfs_dir_ro_inode_operations Btrfs: disable xattr operations on subvolume directories Btrfs: remove old tree_root case in btrfs_read_locked_inode() ISDN: eicon: silence misleading array-bounds warning xfs: prevent quotacheck from overloading inode lru sysctl: fix proc_doulongvec_ms_jiffies_minmax() userns: Make ucounts lock irq-safe vring: Force use of DMA API for ARM-based systems with legacy devices mm, page_alloc: fix premature OOM when racing with cpuset mems update mm, page_alloc: move cpuset seqcount checking to slowpath mm, page_alloc: fix fast-path race with cpuset update or removal mm, page_alloc: fix check for NULL preferred_zone mm/mempolicy.c: do not put mempolicy before using its nodemask mm/huge_memory.c: respect FOLL_FORCE/FOLL_COW for thp drm/atomic: clear out fence when duplicating state Revert "drm/radeon: always apply pci shutdown callbacks" drm/vc4: fix a bounds check drm/vc4: Return -EINVAL on the overflow checks failing. drm/vc4: Fix an integer overflow in temporary allocation layout. drm/vc4: Fix memory leak of the CRTC state. drm/i915: Ignore bogus plane coordinates on SKL when the plane is not visible drm: Fix broken VT switch with video=1366x768 option drm: Schedule the output_poll_work with 1s delay if we have delayed event tile/ptrace: Preserve previous registers for short regset write fbdev: color map copying bounds checking ANDROID: sched/walt: Drop arch-specific timer access ANDROID: sched/walt: include missing header for arm_timer_read_counter() ANDROID: fs: Export vfs_rmdir2 ANDROID: fs: Export free_fs_struct and set_fs_pwd ANDROID: cpufreq: interactive: Use idle-end notifiers FROMLIST: cpufreq: Add android's 'interactive' governor ANDROID: cpufreq: conservative: fix duplicate 'static' error ANDROID: sdcardfs: eliminate the offset argument to ->direct_IO ANDROID: sdcardfs: make it use new .rename i_op ANDROID: sdcardfs: Propagate dentry down to inode_change_ok() ANDROID: sdcardfs: get rid of 'parent' argument of ->d_compare() ANDROID: sdcardfs: add parent pointer into dentry name hash ANDROID: sdcardfs: use wrappers to access i_mutex ANDROID: mnt: remount should propagate to slaves of slaves ANDROID: sdcardfs: Fix locking issue with permision fix up ANDROID: sdcardfs: Switch ->d_inode to d_inode() ANDROID: sdcardfs: Change magic value ANDROID: sdcardfs: Use per mount permissions ANDROID: sdcardfs: Add gid and mask to private mount data ANDROID: sdcardfs: User new permission2 functions ANDROID: vfs: Add permission2 for filesystems with per mount permissions ANDROID: vfs: Add setattr2 for filesystems with per mount permissions ANDROID: vfs: Allow filesystems to access their private mount data ANDROID: mnt: Add filesystem private data to mount points ANDROID: sdcardfs: Move directory unlock before touch ANDROID: sdcardfs: fix external storage exporting incorrect uid ANDROID: sdcardfs: Added top to sdcardfs_inode_info ANDROID: sdcardfs: Switch package list to RCU ANDROID: sdcardfs: Fix locking for permission fix up ANDROID: sdcardfs: Check for other cases on path lookup ANDROID: sdcardfs: override umask on mkdir and create ANDROID: sched/debug: Add energy procfs interface ANDROID: cpufreq: sched: Fix kernel crash on accessing sysfs file ANDROID: FIXUP: sched/tune: add fixes missing from a previous patch ANDROID: sched: tune: Fix lacking spinlock initialization ANDROID: cgroup: Remove leftover instances of allow_attach ANDROID: FIXUP: sched: scheduler-driven cpu frequency selection ANDROID: sched/rt: Add Kconfig option to enable panicking for RT throttling ANDROID: sched/rt: print RT tasks when RT throttling is activated ANDROID: sched/fair: Favor higher cpus only for boosted tasks ANDROID: sched/fair: call OPP update when going idle after migration ANDROID: sched/cpufreq_sched: fix thermal capping events ANDROID: sched/fair: Picking cpus with low OPPs for tasks that prefer idle CPUs ANDROID: FIXUP: sched/tune: do initialization as a postcore_initicall ANDROID: DEBUG: sched: add tracepoint for RD overutilized ANDROID: sched/tune: Introducing a new schedtune attribute prefer_idle ANDROID: sched: use util instead of capacity to select busy cpu ANDROID: arch_timer: add error handling when the MPM global timer is cleared ANDROID: FIXUP: sched: Fix double-release of spinlock in move_queued_task ANDROID: FIXUP: sched/fair: Fix hang during suspend in sched_group_energy ANDROID: FIXUP: sched: fix SchedFreq integration for both PELT and WALT ANDROID: sched: EAS: Avoid causing spikes to max-freq unnecessarily ANDROID: FIXUP: sched: fix set_cfs_cpu_capacity when WALT is in use ANDROID: sched/walt: Accounting for number of irqs pending on each core ANDROID: sched: Introduce Window Assisted Load Tracking (WALT) ANDROID: sched/tune: fix PB and PC cuts indexes definition ANDROID: sched/fair: optimize idle cpu selection for boosted tasks ANDROID: FIXUP: sched/tune: fix accounting for runnable tasks ANDROID: sched/tune: use a single initialisation function ANDROID: FIXUP: sched/tune: fix payoff calculation for boost region ANDROID: sched/tune: Add support for negative boost values ANDROID: FIX: sched/tune: move schedtune_nornalize_energy into fair.c ANDROID: FIX: sched/tune: update usage of boosted task utilisation on CPU selection ANDROID: sched/fair: add tunable to set initial task load ANDROID: sched/fair: add tunable to force selection at cpu granularity ANDROID: sched: EAS: take cstate into account when selecting idle core ANDROID: sched/cpufreq_sched: Consolidated update ANDROID: FIXUP: sched: fix build for non-SMP target ANDROID: DEBUG: sched/tune: add tracepoint on P-E space filtering ANDROID: DEBUG: sched/tune: add tracepoint for energy_diff() values ANDROID: DEBUG: sched/tune: add tracepoint for task boost signal CHROMIUM: sched: update the average of nr_running ANDROID: DEBUG: schedtune: add tracepoint for schedtune_tasks_update() values ANDROID: DEBUG: schedtune: add tracepoint for CPU boost signal ANDROID: DEBUG: schedtune: add tracepoint for SchedTune configuration update ANDROID: DEBUG: sched,cpufreq: add cpu_capacity change tracepoint ANDROID: DEBUG: sched: add tracepoint for CPU load/util signals ANDROID: DEBUG: sched: add tracepoint for task load/util signals ANDROID: DEBUG: sched: add tracepoint for cpu/freq scale invariance ANDROID: sched/fair: filter energy_diff() based on energy_payoff value ANDROID: sched/tune: add support to compute normalized energy ANDROID: sched/fair: keep track of energy/capacity variations ANDROID: sched/fair: add boosted task utilization ANDROID: sched/{fair,tune}: track RUNNABLE tasks impact on per CPU boost value ANDROID: sched/tune: compute and keep track of per CPU boost value ANDROID: sched/tune: add initial support for CGroups based boosting ANDROID: sched/fair: add boosted CPU usage ANDROID: sched/fair: add function to convert boost value into "margin" ANDROID: sched/tune: add sysctl interface to define a boost value ANDROID: sched/tune: add detailed documentation ANDROID: fixup! sched: scheduler-driven cpu frequency selection ANDROID: sched: remove call of sched_avg_update from sched_rt_avg_update ANDROID: sched/cpufreq_sched: add trace events ANDROID: sched/fair: jump to max OPP when crossing UP threshold ANDROID: sched/fair: cpufreq_sched triggers for load balancing ANDROID: sched/{core,fair}: trigger OPP change request on fork() ANDROID: sched/fair: add triggers for OPP change requests ANDROID: sched: scheduler-driven cpu frequency selection ANDROID: cpufreq: introduce cpufreq_driver_is_slow ANDROID: sched: Add group_misfit_task load-balance type ANDROID: sched: Add per-cpu max capacity to sched_group_capacity ANDROID: sched: Do eas idle balance regardless of the rq avg idle value ANDROID: arm64: Enable max freq invariant scheduler load-tracking and capacity support ANDROID: arm: Enable max freq invariant scheduler load-tracking and capacity support ANDROID: sched: Update max cpu capacity in case of max frequency constraints ANDROID: cpufreq: Max freq invariant scheduler load-tracking and cpu capacity support ANDROID: sched: Disable energy-unfriendly nohz kicks ANDROID: sched: Consider a not over-utilized energy-aware system as balanced ANDROID: sched: Energy-aware wake-up task placement ANDROID: sched: Determine the current sched_group idle-state ANDROID: sched, cpuidle: Track cpuidle state index in the scheduler ANDROID: sched: Add over-utilization/tipping point indicator ANDROID: sched: Estimate energy impact of scheduling decisions ANDROID: sched: Extend sched_group_energy to test load-balancing decisions ANDROID: sched: Calculate energy consumption of sched_group ANDROID: sched: Highest energy aware balancing sched_domain level pointer ANDROID: sched: Relocated cpu_util() and change return type ANDROID: sched: Compute cpu capacity available at current frequency ANDROID: sched: Support for extracting EAS energy costs from DT ANDROID: arm64, topology: Updates to use DT bindings for EAS costing data ANDROID: arm64: Cpu invariant scheduler load-tracking and capacity support ANDROID: arm: Cpu invariant scheduler load-tracking and capacity support ANDROID: sched: Introduce SD_SHARE_CAP_STATES sched_domain flag ANDROID: sched: Initialize energy data structures ANDROID: sched: Make energy awareness a sched feature ANDROID: sched: Documentation for scheduler energy cost model ANDROID: sched: Prevent unnecessary active balance of single task in sched group ANDROID: sched: Enable idle balance to pull single task towards cpu with higher capacity ANDROID: sched: Consider spare cpu capacity at task wake-up ANDROID: sched: Add cpu capacity awareness to wakeup balancing ANDROID: arm: Update arch_scale_cpu_capacity() to reflect change to define ANDROID: arm64: Enable frequency invariant scheduler load-tracking support ANDROID: arm: Enable frequency invariant scheduler load-tracking support ANDROID: cpufreq: Frequency invariant scheduler load-tracking support ANDROID: [CPUFREQ] Don't export governors for default governor ANDROID: kernel/configs: recommended: CONFIG_ARM64_SW_TTBR0_PAN=y ANDROID: kernel/configs: base: Enable QUOTA related configs ANDROID: kernel/configs: recommended: Enable MEMORY_STATE_TIME FROMLIST: config: android-base: enable hardened usercopy and kernel ASLR FROMLIST: config: android-recommended: disable aio support ANDROID: kernel/configs: recommended: enable fstack-protector-strong ANDROID: kernel/configs: base: enable UID_CPUTIME ANDROID: kernel/configs: base: restrict access to perf events ANDROID: configs: base: enable configfs gadget functions ANDROID: configs: merge AOSP config fragments ANDROID: Implement memory_state_time, used by qcom,cpubw ANDROID: dm: rebase for 4.9 ANDROID: usb: otg-wakelock: Remove wakelock.h dependencies ANDROID: gpio_matrix: Remove wakelock.h dependencies ANDROID: fiq_debugger: Remove wakelock.h dependencies UPSTREAM: net: socket: don't set sk_uid to garbage value in ->setattr() ANDROID: trace: net: use %pK for kernel pointers UPSTREAM: net: ipv4: Don't crash if passing a null sk to ip_rt_update_pmtu. UPSTREAM: net: inet: Support UID-based routing in IP protocols. UPSTREAM: net: core: add UID to flows, rules, and routes UPSTREAM: net: core: Add a UID field to struct sock. ANDROID: fs: FS tracepoints to track IO. ANDROID: MMC/UFS IO Latency Histograms. CHROMIUM: fix warning when releasing active sync point ANDROID: goldfish_pipe: fix allmodconfig build ANDROID: goldfish: goldfish_pipe: fix locking errors ANDROID: goldfish_pipe: fix call_kern.cocci warnings ANDROID: goldfish_pipe: An implementation of more parallel pipe ANDROID: goldfish_pipe: bugfixes and performance improvements. ANDROID: goldfish: disable GOLDFISH_SYNC ANDROID: goldfish: enable CONFIG_INET_DIAG_DESTROY ANDROID: build: fix build config kernel_dir ANDROID: dm verity: add minimum prefetch size ANDROID: build: add build server configs for goldfish UPSTREAM: trace: Update documentation for mono, mono_raw and boot clock UPSTREAM: trace: Add an option for boot clock as trace clock UPSTREAM: timekeeping: Add a fast and NMI safe boot clock ANDROID: video: goldfishfb: fix platform_no_drv_owner.cocci warnings ANDROID: arm64: rename ranchu defconfig to ranchu64 ANDROID: arch: x86: disable pic for Android toolchain ANDROID: goldfish: Add goldfish sync driver ANDROID: goldfish: add ranchu defconfigs ANDROID: goldfish_audio: Clear audio read buffer status after each read ANDROID: goldfish_events: no extra EV_SYN; register goldfish ANDROID: goldfish_fb: Set pixclock = 0 ANDROID: goldfish: Enable ACPI-based enumeration for goldfish audio ANDROID: goldfish: Enable ACPI-based enumeration for goldfish framebuffer ANDROID: video: goldfishfb: add devicetree bindings ANDROID: usb: gadget: function: cleanup: Add blank line after declaration ANDROID: usb: gadget: f_mtp: simplify ptp NULL pointer check ANDROID: usb: gadget: audio_source: fix comparison of distinct pointer types ANDROID: binder: support for file-descriptor arrays. ANDROID: binder: support for scatter-gather. ANDROID: binder: add extra size to allocator. ANDROID: binder: refactor binder_transact() ANDROID: binder: support multiple /dev instances. ANDROID: binder: deal with contexts in debugfs. ANDROID: binder: support multiple context managers. ANDROID: binder: split flat_binder_object. ANDROID: [RFC]cgroup: Change from CAP_SYS_NICE to CAP_SYS_RESOURCE for cgroup migration permissions CHROMIUM: cgroups: relax permissions on moving tasks between cgroups ANDROID: dm: android-verity: Remove fec_header location constraint ANDROID: fiq_debugger: Pass task parameter to unwind_frame() ANDROID: input: keyreset: switch to orderly_reboot ANDROID: cpuset: Make cpusets restore on hotplug ANDROID: Don't show empty tag stats for unprivileged uids ANDROID: dm: android-verity: Allow android-verity to be compiled as an independent module ANDROID: dm-verity: adopt changes made to dm callbacks ANDROID: dm verity fec: pack the fec_header structure ANDROID: dm: android-verity: Verify header before fetching table ANDROID: dm: allow adb disable-verity only in userdebug ANDROID: dm: mount as linear target if eng build ANDROID: dm: use default verity public key ANDROID: dm: fix signature verification flag ANDROID: dm: use name_to_dev_t ANDROID: dm: rename dm-linear methods for dm-android-verity ANDROID: dm: Minor cleanup ANDROID: dm: Mounting root as linear device when verity disabled ANDROID: dm-android-verity: Rebase on top of 4.1 ANDROID: dm: Add android verity target ANDROID: dm: fix dm_substitute_devices() ANDROID: dm: Rebase on top of 4.9 CHROMIUM: dm: boot time specification of dm= ANDROID: usb: gadget: f_accessory: remove duplicate endpoint alloc ANDROID: sdcardfs: fix itnull.cocci warnings ANDROID: sdcardfs: Truncate packages_gid.list on overflow ANDROID: netfilter: xt_quota2: make quota2_log work well ANDROID: cpu: send KOBJ_ONLINE event when enabling cpus ANDROID: dm verity fec: initialize recursion level ANDROID: dm verity fec: add missing release from fec_ktype ANDROID: dm verity fec: limit error correction recursion FROMLIST: security,perf: Allow further restriction of perf_event_open ANDROID: ARM64: Ignore Image-dtb from git point of view ANDROID: arm64: add option to build Image-dtb ANDROID: usb: gadget: f_midi: set fi->f to NULL when free f_midi function ANDROID: xt_qtaguid: Fix panic caused by processing non-full socket. ANDROID: fiq_debugger: Add fiq_debugger.disable option FROMLIST: wlcore: Disable filtering in AP role ANDROID: fiq_debugger: Add option to apply uart overlay by FIQ_DEBUGGER_UART_OVERLAY ANDROID: usb: dual-role: make stub functions inline ANDROID: quick selinux support for tracefs ANDROID: xt_qtaguid: Fix panic caused by synack processing ANDROID: fuse: Add support for d_canonical_path ANDROID: vfs: change d_canonical_path to take two paths ANDROID: netfilter: xt_qtaguid: seq_printf fixes ANDROID: mmc: Add CONFIG_MMC_SIMULATE_MAX_SPEED ANDROID: dm verity fec: add sysfs attribute fec/corrected ANDROID: mm: Export do_munmap ANDROID: sdcardfs: remove unneeded __init and __exit ANDROID: sdcardfs: Remove unused code ANDROID: fs: Export d_absolute_path ANDROID: sdcardfs: remove effectless config option ANDROID: inotify: Fix erroneous update of bit count ANDROID: fs: sdcardfs: Declare LOOKUP_CASE_INSENSITIVE unconditionally ANDROID: trace: cpufreq: fix typo in min/max cpufreq ANDROID: sdcardfs: Add support for d_canonical_path ANDROID: vfs: add d_canonical_path for stacked filesystem support ANDROID: sdcardfs: Bring up to date with Android M permissions: ANDROID: Changed type-casting in packagelist management ANDROID: Port of sdcardfs to 4.4 ANDROID: Included sdcardfs source code for kernel 3.0 ANDROID: usb: gadget: Add support for MTP OS desc CHROMIUM: usb: gadget: f_accessory: add .raw_request callback CHROMIUM: usb: gadget: audio_source: add .free_func callback CHROMIUM: usb: gadget: f_mtp: fix usb_ss_ep_comp_descriptor CHROMIUM: usb: gadget: f_mtp: Add SuperSpeed support ANDROID: dm-crypt: run in a WQ_HIGHPRI workqueue ANDROID: power: Provide dummy log_suspend_abort_reason() if SUSPEND is disabled ANDROID: PM / suspend: Add dependency on RTC_LIB ANDROID: net: pppolac/pppopns: Replace msg.msg_iov with iov_iter_kvec() ANDROID: mmc: sdio: Disable retuning in sdio_reset_comm() ANDROID: kernel/watchdog: fix unused variable warning ANDROID: usb: gadget: f_mtp: don't use le16 for u8 field ANDROID: lowmemorykiller: fix declaration order warnings ANDROID: mmc: move to a SCHED_FIFO thread ANDROID: skip building drivers as modules ANDROID: wakeup: Add the guard condition for len in pm_get_active_wakeup_sources ANDROID: goldfish: pipe: fix platform_no_drv_owner.cocci warnings ANDROID: epoll: use freezable blocking call ANDROID: Fix for in kernel emergency remount when loop mounts are used ANDROID: kbuild: Makefile.clean: make Kbuild and Makefile optional ANDROID: kbuild: make it possible to specify the module output dir ANDROID: ext4: Add support for FIDTRIM, a best-effort ioctl for deep discard trim ANDROID: hardlockup: detect hard lockups without NMIs using secondary cpus ANDROID: rtc-palmas: correct for bcd year ANDROID: w1: ds2482: Manage SLPZ pin sleep state ANDROID: fuse: Freeze client on suspend when request sent to userspace ANDROID: serial_core: Add wake_peer uart operation ANDROID: mm: add a field to store names for private anonymous memory ANDROID: pstore/ram: Add ramoops_console_write_buf api ANDROID: pstore: Update Documentation/android.txt ANDROID: initramfs: Add skip_initramfs command line option ANDROID: of: Fix build warnings ANDROID: of: fix CONFIG_CMDLINE_EXTEND ANDROID: ARM64: copy CONFIG_CMDLINE_EXTEND from ARM ANDROID: of: Support CONFIG_CMDLINE_EXTEND config option ANDROID: ARM: decompressor: Flush tlb before swiching domain 0 to client mode ANDROID: ARM64: add option to build Image.gz/dtb combo ANDROID: ARM: convert build of appended dtb zImage to list of dtbs ANDROID: ARM: add config option to build zImage/dtb combo ANDROID: ARM: Fix dtb list when DTB_IMAGE_NAMES is empty ANDROID: arm64: pass return address to dma_common_contiguous_remap ANDROID: arch: arm64: force -fno-pic ANDROID: arm64: process: dump memory around registers when displaying regs ANDROID: arm64: check for upper PAGE_SHIFT bits in pfn_valid() ANDROID: ARM: fault: assume no context when IRQs are disabled during data abort. ANDROID: ARM: Fix "Make low-level printk work" to use a separate config option ANDROID: ARM: add option to flush console before reboot ANDROID: ARM: Make low-level printk work ANDROID: Optionally flush entire dcache from v6_dma_flush_range ANDROID: process: Add display of memory around registers when displaying regs. ANDROID: security: Add proper checks for Android specific capability checks ANDROID: uid_cputime: skip power reporting per uid for now ANDROID: uid_cputime: Check for the range while removing range of UIDs. ANDROID: uid_cputime: Iterates over all the threads instead of processes. ANDROID: uid_cputime: fix cputime overflow ANDROID: uid_cputime: Avoids double accounting of process stime, utime and cpu_power in task exit. ANDROID: uid_cputime: Extends the cputime functionality to report power per uid ANDROID: proc: uid_cputime: fix show_uid_stat permission ANDROID: proc: uid_cputime: create uids from kuids ANDROID: proc: uid: Adds accounting for the cputimes per uid. ANDROID: fixup! proc: make oom adjustment files user read-only ANDROID: proc: make oom adjustment files user read-only ANDROID: proc: smaps: Allow smaps access for CAP_SYS_RESOURCE ANDROID: wakeup_reason: use vsnprintf instead of snsprintf for vargs. ANDROID: power: wakeup_reason: fix suspend time reporting ANDROID: wakeup: Add last wake up source logging for suspend abort reason. ANDROID: Power: Report suspend times from last_suspend_time ANDROID: Make suspend abort reason logging depend on CONFIG_PM_SLEEP ANDROID: power: Add check_wakeup_reason() to verify wakeup source irq ANDROID: power: Adds functionality to log the last suspend abort reason. ANDROID: power: Avoids bogus error messages for the suspend aborts. ANDROID: power: Add property CHARGE_COUNTER_EXT and 64-bit precision properties ANDROID: Power: Changes the permission to read only for sysfs file /sys/kernel/wakeup_reasons/last_resume_reason ANDROID: power: wakeup_reason: rename irq_count to irqcount ANDROID: Power: Add guard condition for maximum wakeup reasons ANDROID: POWER: fix compile warnings in log_wakeup_reason ANDROID: Power: add an API to log wakeup reasons ANDROID: PM / Suspend: Print wall time at suspend entry and exit ANDROID: power: power_supply: add POWER_SUPPLY_PROP_CHARGE_ENABLED ANDROID: power: power_supply: add POWER_SUPPLY_PROP_USB_OTG ANDROID: power: power_supply: move POWER_SUPPLY_PROP_USB_HC to type 'int' order ANDROID: power_supply: Add custom property for USB High Current mode ANDROID: trace: power: add trace_clock_set_parent ANDROID: trace: cpufreq: Add tracing for min/max cpufreq ANDROID: trace: fix compilation for 4.1 ANDROID: trace/events: fix gpu event timestamp formatting ANDROID: trace: add non-hierarchical function_graph option ANDROID: trace: Add an option to show tgids in trace output ANDROID: trace/events: add gpu trace events ANDROID: sync: add Documentation/sync.txt ANDROID: ARM: Call idle notifiers ANDROID: Move x86_64 idle notifiers to generic ANDROID: cpuidle: governor: menu: don't use loadavg ANDROID: sched: add sched blocked tracepoint which dumps out context of sleep. ANDROID: sched: Enable might_sleep before initializing drivers. ANDROID: fiq_debugger: Build fixes for 4.1 ANDROID: fiq_debugger: Add fiq_watchdog_triggered api ANDROID: fiq_debugger: Call fiq_debugger_printf through a function pointer from cpu specific code ANDROID: fiq_debugger: add ARM64 support ANDROID: fiq_debugger: split arm support into fiq_debugger_arm.c ANDROID: fiq_debugger: use pt_regs for registers ANDROID: fiq_debugger: allow compiling without CONFIG_FIQ_GLUE ANDROID: fiq_debugger: rename debug->fiq_debugger ANDROID: fiq_debugger: move into drivers/staging/android/fiq_debugger/ ANDROID: ARM: fiq_glue: Add custom fiq return handler api. ANDROID: ARM: kgdb: ignore breakpoint instructions from user mode ANDROID: ARM: fiq_debugger: Update tty code for 3.9 ANDROID: ARM: fiq_debugger: Use kmsg_dumper to dump kernel logs ANDROID: ARM: fiq_debugger: Fix to compile on 3.7 ANDROID: ARM: fiq_debugger: fix uninitialised spin_lock. ANDROID: ARM: fiq_debugger: lock between tty and console writes ANDROID: ARM: fiq_debugger: add process context reboot command ANDROID: ARM: fiq_debugger: fix multiple consoles and make it a preferred console ANDROID: kdb: support new lines without carriage returns ANDROID: ARM: fiq_debugger: add support for kgdb ANDROID: ARM: fiq_debugger: add debug_putc ANDROID: ARM: fiq_debugger: add support for reboot commands ANDROID: ARM: fiq_debugger: fix compiling for v3.3 ANDROID: ARM: Add generic fiq serial debugger ANDROID: ARM: Add fiq_glue ANDROID: fix false disconnect due to a signal sent to the reading process ANDROID: usb: gadget: cleanup: fix unused variable and function warnings ANDROID: usb: gadget: build audio_source function only if SND is enabled ANDROID: usb: gadget: configfs: handle gadget reset request for android ANDROID: usb: gadget: create F_midi device ANDROID: usb: gadget: Add device attribute to determine gadget state ANDROID: usb: phy: fix dual role sysfs build if kernel modules are supported ANDROID: usb: phy: Dual role sysfs class definition ANDROID: usb: gadget: fix NULL ptr derefer while symlinking PTP func ANDROID: usb:gadget:Add "state" attribute to android_device ANDROID: usb: gadget: Do not disconnect unregistered dev ANDROID: usb: gadget: Relocate f_accessory ANDROID: usb: gadget: Accessory:Migrate to USB_FUNCTION API ANDROID: usb: gadget: Move gadget functions code ANDROID: usb:gadget:audio_source: Move to USB_FUNCTION API ANDROID: usb: gadget: Add function devices to the parent ANDROID: usb: gadget: f_audio_source:replace deprecated API ANDROID: usb: gadget: check for accessory device before disconnecting HIDs ANDROID: usb: gadget: Add Uevent to notify userspace ANDROID: usb: gadget: configfs: Add usb_function ptr to fi struct ANDROID: usb: gadget: mtp/ptp: Migrate functions to the USB_FUNCTION interface Linux 4.9.6 libceph: stop allocating a new cipher on every crypto request libceph: uninline ceph_crypto_key_destroy() tools/virtio/ringtest: fix run-on-all.sh for offline cpus selftest/powerpc: Wrong PMC initialized in pmc56_overflow test soc: ti: wkup_m3_ipc: Fix error return code in wkup_m3_ipc_probe() spi: pxa2xx: add missed break dmaengine: pl330: Fix runtime PM support for terminated transfers dmaengine: rcar-dmac: unmap slave resource when channel is freed s5p-mfc: Fix clock management in s5p_mfc_release() function s5p-cec: mark PM functions as __maybe_unused again st-hva: fix some error handling in hva_hw_probe() ite-cir: initialize use_demodulator before using it gs1662: drop kfree for memory allocated with devm_kzalloc platform: pxa_camera: add VIDEO_V4L2 dependency blackfin: check devm_pinctrl_get() for errors rpmsg: virtio_rpmsg_bus: fix channel creation mtd: spi-nor: Fix some error codes in cqspi_setup_flash() mtd: spi-nor: Off by one in cqspi_setup_flash() PM / devfreq: Fix the bug of devfreq_add_device when governor is NULL PM / devfreq: exynos-bus: Fix the wrong return value scsi: mpt3sas: fix hang on ata passthrough commands scsi: ses: Fix SAS device detection in enclosure swiotlb: Add swiotlb=noforce debug option swiotlb: Convert swiotlb_force from int to enum arm64: Fix swiotlb fallback allocation arm64: mm: avoid name clash in __page_to_voff() xprtrdma: Squelch "max send, max recv" messages at connect time xprtrdma: Make FRWR send queue entry accounting more accurate libceph: make sure ceph_aes_crypt() IV is aligned ceph: fix endianness bug in frag_tree_split_cmp ceph: fix endianness of getattr mask in ceph_d_revalidate ceph: fix ceph_get_caps() interruption ceph: fix scheduler warning due to nested blocking ARM: 8613/1: Fix the uaccess crash on PB11MPCore ARM: ux500: fix prcmu_is_cpu_in_wfi() calculation ARM: dts: omap3: Fix Card Detect and Write Protect on Logic PD SOM-LV ARM: dts: imx6qdl-nitrogen6_max: fix sgtl5000 pinctrl init ARM: dts: omap2: Add an empty chosen node to top level DTSI ARM: dts: omap3: Add an empty chosen node to top level DTSI ARM: dts: am4372: Add an empty chosen node to top level DTSI ARM: dts: omap5: Add an empty chosen node to top level DTSI ARM: dts: omap4: Add an empty chosen node to top level DTSI ARM: dts: am33xx: Add an empty chosen node to top level DTSI ARM: dts: dm814x: Add an empty chosen node to top level DTSI ARM: dts: dm816x: Add an empty chosen node to top level DTSI ARM: dts: dra7: Add an empty chosen node to top level DTSI libceph: remove now unused ceph_*{en,de}crypt*() functions libceph: switch ceph_x_decrypt() to ceph_crypt() libceph: switch ceph_x_encrypt() to ceph_crypt() libceph: tweak calcu_signature() a little libceph: rename and align ceph_x_authorizer::reply_buf libceph: introduce ceph_crypt() for in-place en/decryption libceph: introduce ceph_x_encrypt_offset() libceph: old_key in process_one_ticket() is redundant libceph: ceph_x_encrypt_buflen() takes in_len Input: ALPS - fix TrackStick support for SS5 hardware arm64/ptrace: Reject attempts to set incomplete hardware breakpoint fields arm64/ptrace: Avoid uninitialised struct padding in fpr_set() arm64/ptrace: Preserve previous registers for short regset write - 3 arm64/ptrace: Preserve previous registers for short regset write - 2 arm64/ptrace: Preserve previous registers for short regset write arm64: avoid returning from bad_mode ARM: dts: da850-evm: fix read access to SPI flash ARM: dts: OMAP5 / DRA7: indicate that SATA port 0 is available. ceph: fix bad endianness handling in parse_reply_info_extra ibmvscsis: Fix max transfer length ibmvscsis: Fix sleeping in interrupt context ARM: 8634/1: hw_breakpoint: blacklist Scorpion CPUs svcrdma: avoid duplicate dma unmapping during error recovery clocksource/exynos_mct: Clear interrupt when cpu is shut down ubifs: Fix journal replay wrt. xattr nodes mac80211: implement multicast forwarding on fast-RX path qla2xxx: Fix crash due to null pointer access x86/ioapic: Restore IO-APIC irq_chip retrigger callback powerpc: Ignore reserved field in DCSR and PVR reads and writes powerpc/ptrace: Preserve previous TM fprs/vsrs on short regset write powerpc/ptrace: Preserve previous fprs/vsrs on short regset write powerpc/perf: Fix PM_BRU_CMPL event code for power9 powerpc/icp-opal: Fix missing KVM case and harden replay KVM: arm/arm64: vgic: Fix deadlock on error handling KVM: s390: do not expose random data via facility bitmap mtd: nand: xway: fix build because of module functions mtd: nand: xway: disable module support mtd: nand: lpc32xx: fix invalid error handling of a requested irq ieee802154: atusb: do not use the stack for buffers to make them DMA able mmc: mxs-mmc: Fix additional cycles after transmission stop mmc: sdhci-acpi: Only powered up enabled acpi child devices HID: corsair: fix control-transfer error handling HID: corsair: fix DMA buffers on stack PCI: Enumerate switches below PCI-to-PCIe bridges PCI: designware: Check for iATU unroll only on platforms that use ATU fuse: fix time_to_jiffies nsec sanity check fuse: clear FR_PENDING flag when moving requests out of pending queue ARC: module: Fix !CONFIG_ARC_DW2_UNWIND builds libnvdimm, namespace: fix pmem namespace leak, delete when size set to zero svcrpc: don't leak contexts on PROC_DESTROY sunrpc: don't call sleeping functions from the notifier block callbacks rcu: Narrow early boot window of illegal synchronous grace periods rcu: Remove cond_resched() from Tiny synchronize_sched() x86/PCI: Ignore _CRS on Supermicro X8DTH-i/6/iF/6F tmpfs: clear S_ISGID when setting posix ACLs ARM: dts: omap3: Add DTS for Logic PD SOM-LV 37xx Dev Kit ARM: dts: imx31: fix AVIC base address ARM: dts: imx31: move CCM device node to AIPS2 bus devices ARM: dts: imx31: fix clock control module interrupts description ARM: dts: imx6q-cm-fx6: fix fec pinctrl ARM: dts: r8a7794: remove Z clock ARM: dts: r8a7794: Use SYSC "always-on" PM Domain for sound ARM: dts: bcm283x: fix typo in mailbox address perf jit: Enable jitdump support without dwarf perf scripting: Avoid leaking the scripting_context variable perf callchain: Fixup help/config for no-unwinding perf diff: Do not overwrite valid build id perf trace: Check if MAP_32BIT is defined (again) perf mem: Fix --all-user/--all-kernel options perf trace: Use the syscall raw_syscalls:sys_enter timestamp IB/IPoIB: Remove can't use GFP_NOIO warning IB/mlx4: Check if GRH is available before using it IB/mlx4: When no DMFS for IPoIB, don't allow NET_IF QPs IB/mlx4: Fix port query for 56Gb Ethernet links IB/mlx4: Handle well-known-gid in mad_demux processing IB/mlx4: Fix out-of-range array index in destroy qp flow IB/mlx4: Set traffic class in AH IB/mlx5: Wait for all async command completions to complete IB/mlx5: Assign SRQ type earlier IB/mlx5: Fix reported max SGE calculation IB/mlx5: Avoid system crash when enabling many VFs IB/rxe: avoid putting a large struct rxe_qp on stack IB/rxe: Increase max number of completions to 32k IB/core: Release allocated memory in cache setup failure Linux 4.9.5 ANDROID: usb: gadget: f_audio_source: Fixed USB Audio Class Interface Descriptor ANDROID: usb: gadget: f_audio_source: change max ISO packet size ANDROID: usb: gadget: f_accessory: Enabled Zero Length Packet (ZLP) for acc_write ANDROID: drivers: usb: gadget: 64-bit related type fixes ANDROID: usb: gadget: f_accessory: move userspace interface to uapi ANDROID: usb: gadget: f_mtp: move userspace interface to uapi ANDROID: USB: remove duplicate out endpoint creation in MTP mode ANDROID: usb: gadget: Fix android gadget driver build ANDROID: usb: gadget: Fixes and hacks to make android usb gadget compile on 3.8 ANDROID: usb: otg: otg-wakelock: Fix build for 3.7 ANDROID: usb: gadget: accessory: Fix section mismatch (again) ANDROID: USB: gadget: f_audio_source: New gadget driver for audio output ANDROID: USB: gadget: f_accessory: Add support for HID input devices ANDROID: USB: gadget: Add ACCESSORY_SET_AUDIO_MODE control request and ioctl ANDROID: usb: gadget: accessory: Fix section mismatch ANDROID: usb: otg: otg-wakelock: Fix build for 3.4 ANDROID: usb: gadget: adb: Only enable the gadget when adbd is ready ANDROID: usb: gadget: adb: do not set error flag when dequeuing req ANDROID: usb: gadget: adb: allow freezing in adb_read ANDROID: usb: gadget: accessory: Add Android Accessory function ANDROID: usb: gadget: adb: Add ADB function ANDROID: usb: gadget: mtp: Add MTP/PTP function ANDROID: usb: otg: otg-wakelock: fix build for 3.3 ANDROID: usb: otg: Temporarily grab wakelock on charger and disconnect events ANDROID: USB: OTG: Take wakelock when VBUS present ANDROID: wlan: Add get_wake_irq functionality ANDROID: Add flags parameter to get_country_code template ANDROID: net: wireless: Add get_country_code functionality to platform ANDROID: network: wireless: Add get_mac_addr functionality to platform ANDROID: wlan: Create generic wlan platform data header ANDROID: net: wireless: Decrease scan entry expiration to avoid stall results ANDROID: bridge: Have tx_bytes count headers like rx_bytes. ANDROID: rfkill: Introduce CONFIG_RFKILL_PM and use instead of CONFIG_PM to power down ANDROID: net: ipv6: fix virtual tunneling build ANDROID: tcp: fix tcp_default_init_rwnd() for 4.1 ANDROID: net: support marking accepting TCP sockets ANDROID: tcp: add a sysctl to config the tcp_default_init_rwnd ANDROID: xt_qtaguid: fix a race condition in if_tag_stat_update ANDROID: netfilter: xt_qtaguid/socket: build fixes for 4.4 ANDROID: netfilter: xt_qtaguid: xt_socket: build fixes ANDROID: net: xt_qtaguid/xt_socket: fix refcount underflow and crash ANDROID: xt_qtaguid: use sock_gen_put() instead of xt_socket_put_sk() ANDROID: xt_qtaguid: Use sk_callback_lock read locks before reading sk->sk_socket ANDROID: xt_qtaguid: fix broken uid/gid range check ANDROID: netfilter: Build fixups - kuid/kguid changes & xt_socket_get/put_sk ANDROID: net: ipv6: autoconf routes into per-device tables ANDROID: nf: IDLETIMER: Fix broken uid field in the msg ANDROID: nf: IDLETIMER: Adds the uid field in the msg ANDROID: netfilter: fix seq_printf type mismatch warning ANDROID: nf: Remove compilation error caused by e8430cbed3ef15fdb1ac26cfd020e010aa5f1c35 ANDROID: nf: IDLETIMER: time-stamp and suspend/resume handling. ANDROID: xt_qtaguid: Fix boot panic ANDROID: net: kuid/kguid build fixes ANDROID: netfilter: ipv6: fix crash caused by ipv6_find_hdr() ANDROID: netfilter: xt_qtaguid: 64-bit warning fixes ANDROID: netfilter: xt_qtaguid: fix memory leak in seq_file handlers ANDROID: netfilter: xt_qtaguid: fix bad tcp_time_wait sock handling ANDROID: netfilter: xt_qtaguid: 3.10 fixes ANDROID: netfilter: xt_quota2: 3.10 fixes. ANDROID: netfilter: qtaguid: rate limit some of the printks ANDROID: netfilter: xt_qtaguid: Allow tracking loopback ANDROID: netfilter: xt_qtaguid: extend iface stat to report protocols ANDROID: netfilter: xt_qtaguid: remove AID_* dependency for access control ANDROID: netfilter: qtaguid: Don't BUG_ON if create_if_tag_stat fails ANDROID: netfilter: xt_qtaguid: fix error exit that would keep a spinlock. ANDROID: netfilter: xt_qtaguid: report only uid tags to non-privileged processes ANDROID: netfilter: xt_qtaguid: start tracking iface rx/tx at low level ANDROID: netfilter: xt_IDLETIMER: Add new netlink msg type ANDROID: netfilter: xt_qtaguid: fix ipv6 protocol lookup ANDROID: netfilter: qtaguid: initialize a local var to keep compiler happy. ANDROID: netfilter: fixup the quota2, and enable. ANDROID: netfilter: adding the original quota2 from xtables-addons ANDROID: netfilter: add xt_qtaguid matching module ANDROID: net: PPPoPNS and PPPoLAC build fixes for 4.4 ANDROID: Hack: net: PPPoPNS and PPPoLAC build fixes for 4.1 ANDROID: net: pppopns: pppolac: fix sendmsg function calls ANDROID: net: PPPoPNS: Remove length argument from data_ready ANDROID: net: move PPPoLAC and PPPoPNS headers to uapi ANDROID: Include if_pppolac.h and if_pppopns.h into header-y target ANDROID: net: PPPoPNS and PPPoLAC update to use PPP_MRU instead of PPP_MRU ANDROID: net: Reorder incoming packets in PPPoLAC and PPPoPNS. ANDROID: net: PPPoPNS and PPPoLAC fixes. ANDROID: net: add PPP on PPTP Network Server (PPPoPNS) driver. ANDROID: net: add PPP on L2TP Access Concentrator (PPPoLAC) driver. ANDROID: sysfs_net_ipv4: Add sysfs-based knobs for controlling TCP window size ANDROID: net: Only NET_ADMIN is allowed to fully control TUN interfaces. ANDROID: net: Replace AID_NET_RAW checks with capable(CAP_NET_RAW). ANDROID: security: Add AID_NET_RAW and AID_NET_ADMIN capability check in cap_capable(). ANDROID: Paranoid network. ANDROID: Add android_aid.h ANDROID: fs: block_dump: Don't display inode changes if block_dump < 2 ANDROID: mmc: core: Remove stray CONFIG_EXPERIMENTAL dependencies ANDROID: mmc: Add "ignore mmc pm notify" functionality ANDROID: mmc: sdio: Fix sdio_reset_comm for sync ANDROID: mmc: sdio: fix sdio_reset_comm() voltage selection ANDROID: mmc: sdio: Fix enable_hs and enable_wide in sdio_reset_comm() ANDROID: mmc: sdio: Add high speed support to sdio_reset_comm() ANDROID: mmc: sdio: Claim host in sdio_reset_comm() ANDROID: mmc: Add new API call 'sdio_reset_comm' for resetting communication with an SDIO device ANDROID: mmc: Add sdio_readb_ext() function ANDROID: mmc: Add concept of an 'embedded' SDIO device. ANDROID: mmc: sd: Add retries in re-detection ANDROID: mmc: sd: When resuming, try a little harder to init the card ANDROID: mmc: sd: Add new CONFIG_MMC_PARANOID_SD_INIT for enabling retries during SD detection ANDROID: mtd: nand: Allow NAND chip ids to be included standalone. ANDROID: gpio_input: convert from wakelocks to wakeup sources ANDROID: input: Made keyreset more robust ANDROID: input: Changed keyreset to act as a wrapper for keycombo. ANDROID: input: add keycombo, a general key combo driver. ANDROID: input: misc: keychord: move header to uapi ANDROID: input: misc: keychord: log when keychord triggered ANDROID: input: keychord: Add keychord driver ANDROID: input: Add keyreset driver. ANDROID: input: misc: gpio_event: remove early suspend ANDROID: Input: Generic GPIO Input device. ANDROID: lowmemorykiller: use module_param_cb instead of __module_param_call ANDROID: lowmemorykiller: trace kill events. ANDROID: staging: lowmemorykiller: Add config option to support oom_adj values pinctrl: sh-pfc: Do not unconditionally support PIN_CONFIG_BIAS_DISABLE arm64: hugetlb: fix the wrong return value for huge_ptep_set_access_flags arm64: hugetlb: remove the wrong pmd check in find_num_contig() arm64: hugetlb: fix the wrong address for several functions powerpc/powernv: Don't warn on PE init if unfreeze is unsupported powerpc/ibmebus: Fix device reference leaks in sysfs interface powerpc/ibmebus: Fix further device reference leaks powerpc/mm: Correct process and partition table max size bus: vexpress-config: fix device reference leak blk-mq: Always schedule hctx->next_cpu power: supply: bq27xxx_battery: Fix register map for BQ27510 and BQ27520 bq24190_charger: Fix PM runtime use for bq24190_battery_set_property iw_cxgb4: Fix error return code in c4iw_rdev_open() powercap/intel_rapl: fix and tidy up error handling ACPI / APEI: Fix NMI notification handling block: cfq_cpd_alloc() should use @gfp block: Change extern inline to static inline ACPI / CPPC: set an error code on probe error path regulators: helpers: Fix handling of bypass_val_on in get_bypass_regmap cpufreq: powernv: Disable preemption while checking CPU throttling state powerpc/64: Simplify adaptation to new ISA v3.00 HPTE format remoteproc: st: Fix error return code in st_rproc_probe() remoteproc: qcom_wcnss: Fix circular module dependency drm: Initialise drm_mm.head_node.allocated drm/i915: Move the min_pixclk[] handling to the end of readout drm/panel: simple: Check against num_timings when setting preferred for timing drm: avoid uninitialized timestamp use in wait_vblank drm/i915/gen9: Fix PCODE polling during SAGV disabling i2c: mux: pca954x: fix i2c mux selection caching NFSv4.1: nfs4_fl_prepare_ds must be careful about reporting success. NFS: Fix a performance regression in readdir pNFS: Fix race in pnfs_wait_on_layoutreturn NFS: fix typo in parameter description pinctrl: meson: fix gpio request disabling other modes btrfs: fix error handling when run_delayed_extent_op fails btrfs: fix locking when we put back a delayed ref that's too new nvme: apply DELAY_BEFORE_CHK_RDY quirk at probe time too x86/cpu: Fix bootup crashes by sanitizing the argument of the 'clearcpuid=' command-line option i2c: piix4: Avoid race conditions with IMC net/mlx5: Only cancel recovery work when cleaning up device USB: serial: ch341: fix modem-control and B0 handling drm/amdgpu: drop verde dpm quirks drm/amdgpu: update si kicker smc firmware drm/radeon: drop verde dpm quirks drm/radeon: update smc firmware selection for SI drm: Clean up planes in atomic commit helper failure path drm/i915/gen9: Fix PCODE polling timeout in stable backport net/af_iucv: don't use paged skbs for TX on HiperSockets sysctl: Drop reference added by grab_header in proc_sys_readdir Clearing FIFOs in RS485 emulation mode causes subsequent transmits to break extcon: return error code on failure sysrq: attach sysrq handler correctly for 32-bit kernel orinoco: Use shash instead of ahash for MIC calculations ibmvscsis: Fix srp_transfer_data fail return code tty/serial: atmel_serial: BUG: stop DMA from transmitting in stop_tx tty/serial: atmel: RS485 half duplex w/DMA: enable RX after TX is done virtio_blk: avoid DMA to stack for the sense buffer dmaengine: omap-dma: Fix dynamic lch_map allocation drivers: char: mem: Fix thinkos in kmem address checks mnt: Protect the mountpoint hashtable with mount_lock pid: fix lockdep deadlock warning due to ucount_lock vme: Fix wrong pointer utilization in ca91cx42_slave_get Revert "tty: serial: 8250: add CON_CONSDEV to flags" ASoC: hdmi-codec: use unsigned type to structure members with bit-field btrfs: fix crash when tracepoint arguments are freed by wq callbacks xhci: fix deadlock at host remove by running watchdog correctly fix a fencepost error in pipe_advance() i2c: fix kernel memory disclosure in dev interface i2c: print correct device invalid address Input: elants_i2c - avoid divide by 0 errors on bad touchscreen data USB: serial: ch341: fix open and resume after B0 USB: serial: ch341: fix control-message error handling USB: serial: ch341: fix open error handling USB: serial: ch341: fix resume after reset USB: serial: ch341: fix initial modem-control state USB: serial: kl5kusb105: fix line-state error handling usb: musb: fix runtime PM in debugfs wusbcore: Fix one more crypto-on-the-stack bug x86/CPU/AMD: Fix Bulldozer topology x86/bugs: Separate AMD E400 erratum and C1E bug x86/cpu/AMD: Clean up cpu_llc_id assignment per topology feature bridge: netfilter: Fix dropping packets that moving through bridge interface xfs: Timely free truncated dirty pages gpio: Move freeing of GPIO hogs before numbing of the device nl80211: fix sched scan netlink socket owner destruction x86/efi: Don't allocate memmap through memblock after mm_init() efi/x86: Prune invalid memory map entries and fix boot regression efi/libstub/arm*: Pass latest memory map to the kernel KVM: x86: Introduce segmented_write_std KVM: x86: emulate FXSAVE and FXRSTOR KVM: x86: add asm_safe wrapper KVM: x86: add Align16 instruction flag KVM: x86: fix NULL deref in vcpu_scan_ioapic KVM: x86: flush pending lapic jump label updates on module unload jump_labels: API for flushing deferred jump label updates KVM: eventfd: fix NULL deref irqbypass consumer KVM: x86: fix emulation of "MOV SS, null selector" mm/hugetlb.c: fix reservation race when freeing surplus pages mm/slab.c: fix SLAB freelist randomization duplicate entries mm: support anonymous stable page mm, memcg: fix the active list aging for lowmem requests when memcg is enabled ocfs2: fix crash caused by stale lvb with fsdlm plugin mm: fix devm_memremap_pages crash, use mem_hotplug_{begin, done} mm: pmd dirty emulation in page fault handler dax: fix deadlock with DAX 4k holes zram: support BDI_CAP_STABLE_WRITES zram: revalidate disk under init_lock selftests: do not require bash for the generated test selftests: do not require bash to run netsocktests testcase drm/savage: dereferencing an error pointer drm/vc4: Fix a couple error codes in vc4_cl_lookup_bos() drm/tegra: dpaux: Fix error handling regulator: axp20x: Fix axp809 ldo_io registration error on cold boot regulator: tps65086: Fix 25mV ranges for BUCK regulators pinctrl: sh-pfc: Add helper to handle bias lookup table pinctrl: sh-pfc: r8a7795: Use lookup function for bias data pinctrl: imx: fix imx_pinctrl_desc initialization Input: i8042 - add Pegatron touchpad to noloop table Input: xpad - use correct product id for x360w controllers Linux 4.9.4 rtlwifi: rtl_usb: Fix missing entry in USB driver's private data rtlwifi: Fix enter/exit power_save drm/i915/gen9: Fix PCODE polling during CDCLK change notification ALSA: usb-audio: Add a quirk for Plantronics BT600 spi: mvebu: fix baudrate calculation for armada variant ARM: omap2+: am437x: rollback to use omap3_gptimer_timer_init() ARM: 8631/1: clkdev: Detect errors in clk_hw_register_clkdev() for mass registration ARM: OMAP4+: Fix bad fallthrough for cpuidle ARM: OMAP5: Fix build for PM code ARM: OMAP5: Fix mpuss_early_init bus: arm-ccn: Prevent hotplug callback leak svcrdma: Clear xpt_bc_xps in xprt_setup_rdma_bc() error exit arm ARM: qcom_defconfig: Fix MDM9515 LCC and GCC config ARM: zynq: Reserve correct amount of non-DMA RAM ARM: pxa: fix pxa25x interrupt init ARM64: dts: bcm2835: Fix bcm2837 compatible string ARM64: dts: bcm2837-rpi-3-b: remove incorrect pwr LED arm64: dts: mt8173: Fix auxadc node tools/virtio: fix READ_ONCE() powerpc: Fix build warning on 32-bit PPC ALSA: firewire-tascam: Fix to handle error from initialization of stream data HID: hid-cypress: validate length of report net: vrf: do not allow table id 0 net: ipv4: Fix multipath selection with vrf net/mlx5e: Remove WARN_ONCE from adaptive moderation code gro: Disable frag0 optimization on IPv6 ext headers gro: use min_t() in skb_gro_reset_offset() gro: Enter slow-path if there is no tailroom net: add the AF_QIPCRTR entries to family name tables net: dsa: Ensure validity of dst->ds[0] r8152: fix rx issue for runtime suspend r8152: split rtl8152_suspend function net: dsa: bcm_sf2: Utilize nested MDIO read/write net: dsa: bcm_sf2: Do not clobber b53_switch_ops bpf: change back to orig prog on too many passes net: vrf: Add missing Rx counters ipv4: Do not allow MAIN to be alias for new LOCAL w/ custom rules igmp: Make igmp group member RFC 3376 compliant flow_dissector: Update pptp handling to avoid null pointer deref. drop_monitor: consider inserted data in genlmsg_end drop_monitor: add missing call to genlmsg_end net: ipv4: dst for local input routes should use l3mdev if relevant net: fix incorrect original ingress device index in PKTINFO rtnl: stats - add missing netlink message size checks net/mlx5e: Disable netdev after close net/mlx5e: Don't sync netdev state when not registered net/mlx5: Prevent setting multicast macs for VFs net/mlx5: Mask destination mac value in ethtool steering rules net/mlx5: Avoid shadowing numa_node net/mlx5: Cancel recovery work in remove flow net/mlx5: Check FW limitations on log_max_qp before setting it net/sched: cls_flower: Fix missing addr_type in classify net: stmmac: Fix race between stmmac_drv_probe and stmmac_open net, sched: fix soft lockup in tc_classify ipv6: handle -EFAULT from skb_copy_bits inet: fix IP(V6)_RECVORIGDSTADDR for udp sockets sctp: sctp_transport_lookup_process should rcu_read_unlock when transport is null net: vrf: Drop conntrack data after pass through VRF device on Tx net: vrf: Fix NAT within a VRF Linux 4.9.3 usb: gadget: composite: always set ep->mult to a sensible value Revert "usb: gadget: composite: always set ep->mult to a sensible value" Revert "rtlwifi: Fix enter/exit power_save" tick/broadcast: Prevent NULL pointer dereference clocksource/dummy_timer: Move hotplug callback after the real timers xfs: fix max_retries _show and _store functions xfs: fix crash and data corruption due to removal of busy COW extents xfs: use the actual AG length when reserving blocks xfs: fix double-cleanup when CUI recovery fails xfs: use GPF_NOFS when allocating btree cursors xfs: ignore leaf attr ichdr.count in verifier during log replay xfs: don't cap maximum dedupe request length xfs: don't allow di_size with high bit set xfs: error out if trying to add attrs and anextents > 0 xfs: don't crash if reading a directory results in an unexpected hole xfs: complain if we don't get nextents bmap records xfs: check for bogus values in btree block headers xfs: forbid AG btrees with level == 0 xfs: handle cow fork in xfs_bmap_trace_exlist xfs: pass state not whichfork to trace_xfs_extlist xfs: Move AGI buffer type setting to xfs_read_agi xfs: pass post-eof speculative prealloc blocks to bmapi xfs: use new extent lookup helpers xfs_file_iomap_begin_delay xfs: clean up cow fork reservation and tag inodes correctly xfs: use new extent lookup helpers in __xfs_reflink_reserve_cow xfs: track preallocation separately in xfs_bmapi_reserve_delalloc() xfs: remove prev argument to xfs_bmapi_reserve_delalloc xfs: always succeed when deduping zero bytes xfs: factor rmap btree size into the indlen calculations xfs: new inode extent list lookup helpers xfs: fix unbalanced inode reclaim flush locking xfs: check minimum block size for CRC filesystems xfs: provide helper for counting extents from if_bytes xfs: don't BUG() on mixed direct and mapped I/O xfs: don't skip cow forks w/ delalloc blocks in cowblocks scan xfs: check return value of _trans_reserve_quota_nblks xfs: don't call xfs_sb_quota_from_disk twice tpm_tis: Check return values from get_burstcount. drm/i915/gen9: fix the WM memory bandwidth WA for Y tiling cases drm/i915/gen9: unconditionally apply the memory bandwidth WA drm/i915: disable PSR by default on HSW/BDW drm/radeon: Always store CRTC relative radeon_crtc->cursor_x/y values s390/pci: fix dma address calculation in map_sg s390/topology: always use s390 specific sched_domain_topology_level powerpc/pci/rpadlpar: Fix device reference leaks PCI: Enable access to non-standard VPD for Chelsio devices (cxgb3) PCI: Support INTx masking on ConnectX-4 with firmware x.14.1100+ PCI: Convert Mellanox broken INTx quirks to be for listed devices only PCI: Convert broken INTx masking quirks from HEADER to FINAL PCI: Add Mellanox device IDs PCI: rockchip: Correct the use of FTS mask PCI: rockchip: Fix negotiated lanes calculation staging: media: davinci_vpfe: unlock on error in vpfe_reqbufs() f2fs: hide a maybe-uninitialized warning f2fs: remove percpu_count due to performance regression md: fix refcount problem on mddev when stopping array. md: MD_RECOVERY_NEEDED is set for mddev->recovery crypto: arm64/aes-ce - fix for big endian crypto: arm64/aes-xts-ce: fix for big endian crypto: arm64/sha1-ce - fix for big endian crypto: arm64/aes-neon - fix for big endian crypto: arm64/aes-ccm-ce: fix for big endian crypto: arm/aes-ce - fix for big endian crypto: arm64/ghash-ce - fix for big endian crypto: arm64/sha2-ce - fix for big endian s390/crypto: unlock on error in prng_tdes_read() mm, compaction: fix NR_ISOLATED_* stats for pfn based migration mm: khugepaged: fix radix tree node leak in shmem collapse error path mm: khugepaged: close use-after-free race during shmem collapsing docs-rst: fix LaTeX \DURole renewcommand with Sphinx 1.3+ mm/hugetlb.c: use the right pte val for compare in hugetlb_cow rpmsg: qcom_smd: Correct return value for O_NONBLOCK mmc: mmc_test: Uninitialized return value genirq/affinity: Fix node generation from cpumask PM / wakeirq: Fix dedicated wakeirq for drivers not using autosuspend irqchip/bcm7038-l1: Implement irq_cpu_offline() callback PCI/MSI: Check for NULL affinity mask in pci_irq_get_affinity() ima: fix memory leak in ima_release_policy relay: check array offset before using it sbp-target: Fix second argument of percpu_ida_alloc() target/iscsi: Fix double free in lio_target_tiqn_addtpg() scsi: mvsas: fix command_active typo scsi: g_NCR5380: Fix release_region in error handling ASoC: samsung: i2s: Fixup last IRQ unsafe spin lock call ASoC: Intel: Skylake: Fix a shift wrapping bug ASoC: cht_bsw_rt5645: Fix leftover kmalloc ASoC: lpass-platform: initialize dma channel number iommu/vt-d: Flush old iommu caches for kdump when the device gets context mapped iommu/vt-d: Fix pasid table size encoding iommu/amd: Fix the left value check of cmd buffer iommu/amd: Missing error code in amd_iommu_init_device() clk: renesas: mstp: Support 8-bit registers for r7s72100 clk: imx31: fix rewritten input argument of mx31_clocks_init() clk: sunxi-ng: sun8i-h3: Set CLK_SET_RATE_PARENT for audio module clocks clk: sunxi-ng: sun8i-a23: Set CLK_SET_RATE_PARENT for audio module clocks clk: ti: dra7: fix "failed to lookup clock node gmac_gmii_ref_clk_div" boot message clk: clk-wm831x: fix a logic error clk: qcom: ipq806x: Fix board clk rates Input: synaptics-rmi4 - unlock on error hwmon: (lm90) fix temp1_max_alarm attribute hwmon: (g762) Fix overflows and crash seen when writing limit attributes hwmon: (nct7802) Fix overflows seen when writing into limit attributes hwmon: (ds620) Fix overflows seen when writing temperature limits hwmon: (amc6821) sign extension temperature hwmon: (scpi) Fix module autoload platform/x86: fujitsu-laptop: use brightness_set_blocking for LED-setting callbacks x86/cpu: Probe CPUID leaf 6 even when cpuid_level == 6 x86/prctl/uapi: Remove #ifdef for CHECKPOINT_RESTORE debugfs: improve DEFINE_DEBUGFS_ATTRIBUTE for !CONFIG_DEBUG_FS clk: renesas: cpg-mssr: Fix inverted debug check efi/efivar_ssdt_load: Don't return success on allocation failure cris: Only build flash rescue image if CONFIG_ETRAX_AXISFLASHMAP is selected ath10k: use the right length of "background" mfd: tps65217: Fix page fault on unloading modules ath10k: fix failure to send NULL func frame for 10.4 nl80211: Use different attrs for BSSID and random MAC addr in scan req mac80211: fix tid_agg_rx NULL dereference drm/i915: tune down the fast link training vs boot fail drm/i915/dp: add lane_count check in intel_dp_check_link_status usb: dwc3: gadget: always unmap EP0 requests usb: dwc3: ep0: explicitly call dwc3_ep0_prepare_one_trb() usb: dwc3: ep0: add dwc3_ep0_prepare_one_trb() iio: accel: st_accel: fix LIS3LV02 reading and scaling staging: iio: ad7606: fix improper setting of oversampling pins mei: move write cb to completion on credentials failures mei: bus: fix mei_cldev_enable KDoc mei: fix parameter rename KDoc USB: serial: io_ti: bind to interface after fw download dibusb: fix possible memory leak in dibusb_rc_query() ARM: dts: sun7i: bananapi-m1-plus: Enable USB PHY for USB host support arm64: dts: hip06: Correct hardware pin number of usb node USB: phy: am335x-control: fix device and of_node leaks ARM: dts: r8a7794: Correct hsusb parent clock usb: gadget: fix request length error for isoc transfer usb: gadget: Fix second argument of percpu_ida_alloc() USB: serial: kl5kusb105: abort on open exception path ALSA: usb-audio: Fix bogus error return in snd_usb_create_stream() usb: musb: blackfin: add bfin_fifo_offset in bfin_ops usb: gadget: udc: core: fix return code of usb_gadget_probe_driver() usb: hub: Move hub_port_disable() to fix warning if PM is disabled usb: musb: Fix trying to free already-free IRQ 4 usb: dwc3: gadget: Fix full speed mode usb: dwc3: pci: Fix dr_mode misspelling usb: dwc3: pci: add Intel Gemini Lake PCI ID xhci: Fix race related to abort operation xhci: Use delayed_work instead of timer for command timeout usb: xhci-mem: use passed in GFP flags instead of GFP_KERNEL USB: serial: mos7720: fix parallel probe USB: serial: mos7720: fix parport use-after-free on probe errors USB: serial: mos7720: fix use-after-free on probe errors USB: serial: mos7720: fix NULL-deref at open USB: serial: mos7840: fix NULL-deref at open USB: serial: kobil_sct: fix NULL-deref in write USB: serial: cyberjack: fix NULL-deref at open USB: serial: oti6858: fix NULL-deref at open USB: serial: io_edgeport: fix NULL-deref at open USB: serial: ti_usb_3410_5052: fix NULL-deref at open USB: serial: garmin_gps: fix memory leak on failed URB submit USB: serial: iuu_phoenix: fix NULL-deref at open USB: serial: io_ti: fix I/O after disconnect USB: serial: io_ti: fix another NULL-deref at open USB: serial: io_ti: fix NULL-deref at open USB: serial: spcp8x5: fix NULL-deref at open USB: serial: keyspan_pda: verify endpoints at probe USB: serial: pl2303: fix NULL-deref at open USB: serial: quatech2: fix sleep-while-atomic in close USB: serial: omninet: fix NULL-derefs at open and disconnect usb: return error code when platform_get_irq fails usb: xhci: hold lock over xhci_abort_cmd_ring() xhci: Handle command completion and timeout race usb: host: xhci: Fix possible wild pointer when handling abort command usb: xhci: fix return value of xhci_setup_device() xhci: free xhci virtual devices with leaf nodes first usb: xhci: apply XHCI_PME_STUCK_QUIRK to Intel Apollo Lake usb: xhci: fix possible wild pointer usb: dwc3: core: avoid Overflow events usb: gadget: composite: Test get_alt() presence instead of set_alt() USB: dummy-hcd: fix bug in stop_activity (handle ep0) USB: fix problems with duplicate endpoint addresses USB: gadgetfs: fix checks of wTotalLength in config descriptors USB: gadgetfs: fix use-after-free bug USB: gadgetfs: fix unbounded memory allocation bug usb: gadgetfs: restrict upper bound on device configuration size usb: storage: unusual_uas: Add JMicron JMS56x to unusual device usb: musb: dsps: implement clear_ep_rxintr() callback usb: musb: core: add clear_ep_rxintr() to musb_platform_ops KVM: MIPS: Flush KVM entry code from icache globally KVM: MIPS: Don't clobber CP0_Status.UX KVM: x86: reset MMU on KVM_SET_VCPU_EVENTS drm/i915: Initialize overlay->last_flip properly drm/i915: Force VDD off on the new power seqeuencer before starting to use it drm/i915: Fix oops in overlay due to frontbuffer tracking drm/i915: Fix oopses in the overlay code due to i915_gem_active stuff gcc-plugins: update gcc-common.h for gcc-7 asm-prototypes: Clear any CPP defines before declaring the functions mac80211: initialize fast-xmit 'info' later pinctrl/amd: Set the level based on ACPI tables ARM: davinci: da850: don't add emac clock to lookup table twice HID: sensor-hub: Move the memset to sensor_hub_get_feature() parisc: Mark cr16 clocksource unstable on SMP systems parisc: Add line-break when printing segfault info fscrypt: fix renaming and linking special files ALSA: usb-audio: Fix irq/process data synchronization ALSA: hda - Apply asus-mode8 fixup to ASUS X71SL ALSA: hda - Fix up GPIO for ASUS ROG Ranger staging: octeon: Call SET_NETDEV_DEV() iio: bmi160: Fix time needed to sleep after command execution iio: max44000: correct value in illuminance_integration_time_available iio: common: st_sensors: fix channel data parsing Linux 4.9.2 drm/i915: Fix setting of boost freq tunable drm/i915: skip the first 4k of stolen memory on everything >= gen8 drm/i915: Initialize dev_priv->atomic_cdclk_freq at init time drm/i915: Fix cdclk vs. dev_cdclk mess when not recomputing things drm/i915/dsi: Do not clear DPOUNIT_CLOCK_GATE_DISABLE from vlv_init_display_clock_gating drm/i915/dsi: Fix chv_exec_gpio disabling the GPIOs it is setting net: mvpp2: fix dma unmapping of TX buffers for fragments sg_write()/bsg_write() is not fit to be called under KERNEL_DS kconfig/nconf: Fix hang when editing symbol with a long prompt target/user: Fix use-after-free of tcmu_cmds if they are expired libnvdimm, pfn: fix align attribute of, numa: Return NUMA_NO_NODE from disable of_node_to_nid() if nid not possible. powerpc/boot: Request no dynamic linker for boot wrapper powerpc/ps3: Fix system hang with GCC 5 builds powerpc/64e: Convert cmpi to cmpwi in head_64.S SUNRPC: fix refcounting problems with auth_gss messages. pNFS: Fix a deadlock between read resends and layoutreturn pNFS: Clear NFS_LAYOUT_RETURN_REQUESTED when invalidating the layout stateid pNFS: Don't clear the layout stateid if a layout return is outstanding pNFS: On error, do not send LAYOUTGET until the LAYOUTRETURN has completed nfs_write_end(): fix handling of short copies libceph: verify authorize reply on connect PCI: Check for PME in targeted sleep state i40iw: Use correct src address in memcpy to rdma stats counters bad_inode: add missing i_op initializers Input: drv260x - fix input device's parent assignment v4l: tvp5150: Add missing break in set control handler media: solo6x10: fix lockup by avoiding delayed register write s5p-mfc: fix failure path of s5p_mfc_alloc_memdev() mn88473: fix chip id check on probe mn88472: fix chip id check on probe IB/cma: Fix a race condition in iboe_addr_get_sgid() IB/rxe: Fix a memory leak in rxe_qp_cleanup() IB/multicast: Check ib_find_pkey() return value IPoIB: Avoid reading an uninitialized member variable IB/mad: Fix an array index check fgraph: Handle a case where a tracer ignores set_graph_notrace x86/smpboot: Make logical package management more robust platform/x86: asus-nb-wmi.c: Add X45U quirk ftrace/x86_32: Set ftrace_stub to weak to prevent gcc from using short jumps to it vsock/virtio: fix src/dst cid format fsnotify: Fix possible use-after-free in inode iteration on umount kvm: nVMX: Allow L1 to intercept software exceptions (#BP and #OF) KVM: PPC: Book3S HV: Don't lose hardware R/C bit updates in H_PROTECT KVM: PPC: Book3S HV: Save/restore XER in checkpointed register state scsi: aacraid: remove wildcard for series 9 controllers md/raid5: limit request size according to implementation limits sc16is7xx: Drop bogus use of IRQF_ONESHOT latent_entropy: fix ARM build error on earlier gcc arm64: KVM: pmu: Reset PMSELR_EL0.SEL to a sane value before entering the guest s390/kexec: use node 0 when re-adding crash kernel memory s390/vmlogrdr: fix IUCV buffer allocation firmware: fix usermode helper fallback loading ARC: mm: arc700: Don't assume 2 colours for aliasing VIPT dcache scsi: avoid a permanent stop of the scsi device's request queue scsi: zfcp: fix rport unblock race with LUN recovery scsi: zfcp: do not trace pure benign residual HBA responses at default level scsi: zfcp: fix use-after-"free" in FC ingress path after TMF iscsi-target: Return error if unable to add network portal scsi: megaraid_sas: Do not set MPI2_TYPE_CUDA for JBOD FP path for FW which does not support JBOD sequence map scsi: megaraid_sas: For SRIOV enabled firmware, ensure VF driver waits for 30secs before reset stm class: Fix device leak in open error path vt: fix Scroll Lock LED trigger name block: protect iterate_bdevs() against concurrent close mei: me: add lewisburg device ids mei: request async autosuspend at the end of enumeration drivers/gpu/drm/ast: Fix infinite loop if read fails drm/amdgpu: fix init save/restore list in gfx_v8.0 drm/amdgpu: fix enable_cp_power_gating in gfx_v8.0. drm/amd/powerplay: bypass fan table setup if no fan connected drm/gma500: Add compat ioctl drm/radeon/si: load the proper firmware on 0x87 oland boards drm/radeon: add additional pci revision to dpm workaround drm/radeon: Hide the HW cursor while it's out of bounds drm/radeon: Also call cursor_move_locked when the cursor size changes drm/nouveau/fifo/gf100-: protect channel preempt with subdev mutex drm/nouveau/i2c/gk110b,gm10x: use the correct implementation drm/nouveau/ttm: wait for bo fence to signal before unmapping vmas drm/nouveau/ltc: protect clearing of comptags with mutex drm/nouveau/bios: require checksum to match for fast acpi shadow method drm/nouveau/kms: lvds panel strap moved again on maxwell drm/nouveau/gr: fallback to legacy paths during firmware lookup drm/amd/amdgpu: enable GUI idle INT after enabling CGCG drm/amdgpu: Also call cursor_move_locked when the cursor size changes drm/amdgpu: Store CRTC relative amdgpu_crtc->cursor_x/y values drm/amdgpu: add additional pci revision to dpm workaround drm/amdgpu/si: load the proper firmware on 0x87 oland boards ACPI / video: Add force_native quirk for HP Pavilion dv6 ACPI / video: Add force_native quirk for Dell XPS 17 L702X staging: comedi: ni_mio_common: fix E series ni_ai_insn_read() data staging: comedi: ni_mio_common: fix M Series ni_ai_insn_read() data mask staging: lustre: ldlm: pl_recalc time handling is wrong staging/lustre/osc: Revert erroneous list_for_each_entry_safe use hv: acquire vmbus_connection.channel_mutex in vmbus_free_channels() docs: sphinx-extensions: make rstFlatTable work with docutils 0.13 thermal: hwmon: Properly report critical temperature in sysfs clk: bcm2835: Avoid overwriting the div info when disabling a pll_div clk arm64: tegra: Add VDD_GPU regulator to Jetson TX1 gpio: chardev: Return error for seek operations gpio: stmpe: fix interrupt handling bug timekeeping_Force_unsigned_clocksource_to_nanoseconds_conversion mmc: sd: Meet alignment requirements for raw_ssr DMA regulator: stw481x-vmmc: fix ages old enable error mmc: sdhci: Fix recovery from tuning timeout Revert "mmc: sdhci: Reset cmd and data circuits after tuning failure" ath9k: do not return early to fix rcu unlocking ath9k: Really fix LED polarity for some Mini PCI AR9220 MB92 cards. ath9k: fix ath9k_hw_gpio_get() to return 0 or 1 on success cfg80211/mac80211: fix BSS leaks when abandoning assoc attempts rtl8xxxu: Work around issue with 8192eu and 8723bu devices not reconnecting perf/x86/intel/cstate: Prevent hotplug callback leak perf annotate: Don't throw error for zero length symbols perf/x86: Fix exclusion of BTS and LBR for Goldmont rtlwifi: Fix enter/exit power_save ath10k: fix soft lockup during firmware crash/hw-restart ssb: Fix error routine when fallback SPROM fails Linux 4.9.1 x86/kbuild: enable modversions for symbols exported from asm builddeb: fix cross-building to arm64 producing host-arch debs xfs: set AGI buffer type in xlog_recover_clear_agi_bucket xfs: fix up xfs_swap_extent_forks inline extent handling arm/xen: Use alloc_percpu rather than __alloc_percpu xen/gntdev: Use VM_MIXEDMAP instead of VM_IO to avoid NUMA balancing tpm xen: Remove bogus tpm_chip_unregister kernel/debug/debug_core.c: more properly delay for secondary CPUs watchdog: qcom: fix kernel panic due to external abort on non-linefetch watchdog: mei_wdt: request stop on reboot to prevent false positive event kernel/watchdog: use nmi registers snapshot in hardlockup handler CIFS: Fix a possible memory corruption in push locks CIFS: Decrease verbosity of ioctl call CIFS: Fix a possible double locking of mutex during reconnect CIFS: Fix missing nls unload in smb2_reconnect() CIFS: Fix a possible memory corruption during reconnect cifs: Fix smbencrypt() to stop pointing a scatterlist at the stack ASoC: intel: Fix crash at suspend/resume without card registration dm space map metadata: fix 'struct sm_metadata' leak on failed create dm raid: fix discard support regression dm rq: fix a race condition in rq_completed() dm crypt: mark key as invalid until properly loaded dm flakey: return -EINVAL on interval bounds error in flakey_ctr() dm table: an 'all_blk_mq' table must be loaded for a blk-mq DM device dm table: fix 'all_blk_mq' inconsistency when an empty table is loaded blk-mq: Do not invoke .queue_rq() for a stopped queue PM / OPP: Don't use OPP structure outside of rcu protected section PM / OPP: Pass opp_table to dev_pm_opp_put_regulator() usb: gadget: composite: always set ep->mult to a sensible value mm, page_alloc: keep pcp count and list contents in sync if struct page is corrupted mm/vmscan.c: set correct defer count for shrinker nvmet: Fix possible infinite loop triggered on hot namespace removal loop: return proper error from loop_queue_rq() f2fs: fix to determine start_cp_addr by sbi->cur_cp_pack f2fs: fix overflow due to condition check order f2fs: set ->owner for debugfs status file's file_operations Revert "f2fs: use percpu_counter for # of dirty pages in inode" ext4: do not perform data journaling when data is encrypted ext4: return -ENOMEM instead of success ext4: reject inodes with negative size ext4: add sanity checking to count_overhead() ext4: fix in-superblock mount options processing ext4: use more strict checks for inodes_per_block on mount ext4: fix stack memory corruption with 64k block size ext4: fix mballoc breakage with 64k block size ext4: don't lock buffer in ext4_commit_super if holding spinlock crypto: caam - fix AEAD givenc descriptors ptrace: Don't allow accessing an undumpable mm ptrace: Capture the ptracer's creds not PT_PTRACE_CAP vfs,mm: fix return value of read() at s_maxbytes mm: Add a user_ns owner to mm_struct and fix ptrace permission checks block_dev: don't test bdev->bd_contains when it is not stable splice: reinstate SIGPIPE/EPIPE handling fs: exec: apply CLOEXEC before changing dumpable task flags exec: Ensure mm->user_ns contains the execed files clk: ti: omap36xx: Work around sprz319 advisory 2.1 ALSA: hda: when comparing pin configurations, ignore assoc in addition to seq ALSA: hda - Gate the mic jack on HP Z1 Gen3 AiO ALSA: hda - fix headset-mic problem on a Dell laptop ALSA: hda - ignore the assoc and seq when comparing pin configurations ALSA: hda/ca0132 - Add quirk for Alienware 15 R2 2016 ALSA: hiface: Fix M2Tech hiFace driver sampling rate change ALSA: usb-audio: Add QuickCam Communicate Deluxe/S7500 to volume_control_quirks usbip: vudc: fix: Clear already_seen flag also for ep0 USB: UHCI: report non-PME wakeup signalling for Intel hardware usb: gadget: composite: correctly initialize ep->maxpacket usb: gadget: f_uac2: fix error handling at afunc_bind usb: core: usbport: Use proper LED API to fix potential crash usb: hub: Fix auto-remount of safely removed or ejected USB-3 devices usb: dwc3: gadget: set PCM1 field of isochronous-first TRBs USB: cdc-acm: add device id for GW Instek AFG-125 USB: serial: kl5kusb105: fix open error path USB: serial: option: add dlink dwm-158 USB: serial: option: add support for Telit LE922A PIDs 0x1040, 0x1041 Btrfs: fix qgroup rescan worker initialization Btrfs: fix emptiness check for dirtied extent buffers at check_leaf() btrfs: store and load values of stripes_min/stripes_max in balance status item Btrfs: fix relocation incorrectly dropping data references Btrfs: fix tree search logic when replaying directory entry deletes Btrfs: fix deadlock caused by fsync when logging directory entries Btrfs: fix BUG_ON in btrfs_mark_buffer_dirty btrfs: limit async_work allocation and worker func duration hotplug: Make register and unregister notifier API symmetric ANDROID: Shrink ashmem directly through shmem_fallocate ANDROID: ashmem: Add shmem_set_file to mm/shmem.c ANDROID: Add android config documentation to boot framework. Conflicts: Documentation/android.txt Documentation/cpu-freq/governors.txt Documentation/networking/ip-sysctl.txt arch/arm64/boot/Makefile arch/arm64/kernel/process.c arch/arm64/kernel/topology.c arch/arm64/mm/dma-mapping.c drivers/cpufreq/cpufreq_interactive.c drivers/input/misc/gpio_matrix.c drivers/md/Kconfig drivers/md/dm-android-verity.c drivers/md/dm-android-verity.h drivers/md/dm-linear.c drivers/md/dm-verity-fec.h drivers/mmc/core/host.c drivers/platform/goldfish/goldfish_pipe.c drivers/power/supply/power_supply_sysfs.c drivers/scsi/ufs/ufshcd.c drivers/scsi/ufs/ufshcd.h drivers/staging/android/fiq_debugger/fiq_debugger.c drivers/staging/android/lowmemorykiller.c drivers/usb/dwc3/core.h drivers/usb/gadget/Kconfig drivers/usb/gadget/configfs.c drivers/usb/gadget/function/Makefile drivers/usb/gadget/function/f_accessory.c drivers/usb/gadget/function/f_audio_source.c drivers/usb/gadget/function/f_fs.c drivers/usb/gadget/function/f_mtp.c drivers/usb/phy/Kconfig drivers/usb/phy/otg-wakelock.c fs/ext4/inode.c fs/ext4/ioctl.c fs/f2fs/data.c fs/proc/task_mmu.c fs/sdcardfs/derived_perm.c fs/sdcardfs/file.c fs/sdcardfs/inode.c fs/sdcardfs/lookup.c fs/sdcardfs/main.c fs/sdcardfs/packagelist.c fs/sdcardfs/sdcardfs.h fs/sdcardfs/super.c include/linux/mmc/core.h include/linux/power_supply.h include/linux/sched.h include/linux/usb/f_mtp.h include/net/fib_rules.h include/net/route.h include/trace/events/cpufreq_interactive.h include/trace/events/power.h include/trace/events/sched.h include/uapi/linux/magic.h include/uapi/linux/prctl.h init/Kconfig kernel/cgroup.c kernel/configs/android-base.config kernel/power/process.c kernel/sched/Makefile kernel/sched/core.c kernel/sched/cputime.c kernel/sched/fair.c kernel/sched/rt.c kernel/sched/sched.h kernel/sched/stop_task.c kernel/sched/tune.c lib/Kconfig.debug net/core/fib_rules.c net/ipv4/inet_connection_sock.c net/ipv4/ping.c net/ipv4/raw.c net/ipv4/route.c net/ipv4/syncookies.c net/ipv4/udp.c net/ipv6/af_inet6.c net/ipv6/ah6.c net/ipv6/datagram.c net/ipv6/esp6.c net/ipv6/icmp.c net/ipv6/inet6_connection_sock.c net/ipv6/ip6_vti.c net/ipv6/ipcomp6.c net/ipv6/ping.c net/ipv6/raw.c net/ipv6/route.c net/ipv6/syncookies.c net/ipv6/tcp_ipv6.c net/ipv6/udp.c Change-Id: I82455dc7b564fc5d3ad2b784a0eb8f96c6b05d4c Signed-off-by: Channagoud Kadabi <ckadabi@codeaurora.org>	2017-02-17 16:14:38 -08:00
Pavankumar Kondeti	12939490db	sysctl: disallow setting sched_time_avg_ms to 0 ... The sched average period can not be 0, disallow setting it to 0. Otherwise CPUs stuck in sched_avg_update(). Change-Id: Ib9fcc5b35dface09d848ba7a737dc4ac0f05d8ee Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>	2017-02-07 15:01:57 -08:00
Pavankumar Kondeti	a4908e9b5f	sysctl: define upper limit for sched_freq_reporting_policy ... Setting sched_freq_reporting_policy tunable to an unsupported values results in a warning from the scheduler. The previous policy setting is also lost. As sched_freq_reporting_policy can not be set to an incorrect value now, remove the WARN_ON_ONCE from the scheduler. Change-Id: I58d7e5dfefb7d11d2309bc05a1dd66acdc11b766 Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org> [rameezmustafa@codeaurora.org: Port to msm-4.8.] Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>	2017-02-07 14:59:54 -08:00
Vikram Mulukutla	40c30b2591	sched: hmp: Remove the global sysctl_sched_enable_colocation tunable ... Colocation in HMP includes a tunable that turns on or off the feature globally across all colocation groups. Supporting this tunable correctly would result in complexity that would outweigh any foreseeable benefits. For example, disabling the feature globally would involve deleting all colocation groups one by one while ensuring no placement decisions are made during the process. Remove the tunable. Adding or removing a task from a colocation group is still possible and so we're not losing functionality. Change-Id: I4cb8bcdbee98d3bdd168baacbac345eca9ea8879 Signed-off-by: Vikram Mulukutla <markivx@codeaurora.org>	2017-02-07 14:51:43 -08:00
Syed Rameez Mustafa	e343972d8e	sched: Convert the global wake_up_idle flag to a per cluster flag ... Since clusters can vary significantly in the power and performance characteristics, there may be a need to have different CPU selection policies based on which cluster a task is being placed on. For example the placement policy can be more aggressive in using idle CPUs on cluster that are power efficient and less aggressive on clusters that are geared towards performance. Add support for per cluster wake_up_idle flag to allow greater flexibility in placement policies. Change-Id: I18cd3d907cd965db03a13f4655870dc10c07acfe Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>	2017-02-07 14:51:38 -08:00
Srivatsa Vaddagiri	b8b701353b	sched: Avoid packing tasks with low sleep time ... Low sleep time can be an indication that waking tasks will not receive any vruntime bonus and hence would suffer from latency when packed. short-burst tasks sleeping on an average more than sched_short_sleep_ns are not eligible for packing. This policy covers the case where a task runs in short bursts and sleeping for smaller duration in between. Change-Id: Ib81fa37809b85c267949cd433bc6115dd89f100e Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org> Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>	2017-02-07 14:51:32 -08:00
Srivatsa Vaddagiri	b36e661e52	sched: Avoid waking idle cpu for short-burst tasks ... Introduce sched_short_burst tunable to classify "short-burst" tasks. These tasks are eligible for packing to avoid overhead associated with waking up an idle CPU. select_best_cpu() ignores power-cost and selects the CPU with least wakeup latency which is not loaded with IRQs and can accommodate this task without exceeding spill limits. The ties are broken with load followed by previous CPU. This policy does not affect cluster selection but only CPU selection in the selected cluster. The tasks eligible for "wakeup-up-idle" and "boost" are not considered for packing. This policy is applied for both "fair" and "rt" scheduling class tasks. Change-Id: I2a05493fde93f58636725f18d0ce8dbce4418a30 Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org> Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>	2017-02-07 14:51:30 -08:00
Syed Rameez Mustafa	084075baab	sched/hmp: Enhance co-location and scheduler boost features ... The recent introduction of the schedtune cgroup controller has provided the scheduler with added flexibility in terms of some of it's placement features. In particular each cgroup under the schedtune controller can now specify: 1) Whether it needs co-location along with other cgroups 2) Whether it is eligible for scheduler boost (sched_boost_enabled) 3) Whether the kernel can override the boost eligibility when necessary (sched_boost_no_override) The scheduler now creates a reserved co-location group at boot. This group is used to co-locate all tasks that form part of any one of the cgroups that have co-location enabled. This reserved group can neither be destroyed nor reused for other purposes. Furthermore, cgroups are only allowed to indicate their co-location preference once at boot. Further updates are disallowed. Since we are now creating co-location groups for an extended period of time, there are a few other factors to consider when determining the preferred cluster for the group. We first exclude any tasks in the group that have not been observed to be running for a significant amount of time. Secondly we introduce the notion of group up and down migrate tunables to allow different migration policies than individual tasks. Lastly we break co-location if a single task in a group exceeds up-migrate but the total load of the group does not exceed group up-migrate. In terms of sched_boost, the scheduler now supports multiple types of boost. These are: 1) FULL_THROTTLE : Force up-migrate tasks belonging any cgroup that has the sched_boost_enabled flag turned on. Little CPUs will only be used when big CPUs can no longer accommodate tasks. Also up-migrate all RT tasks. 2) CONSERVATIVE : Override the sched_boost_enabled flag for all cgroups except those that have the sched_boost_no_override flag set. Force up-migrate all tasks belonging to only those cgroups that still remain eligible for boost. RT tasks do not get force up migrated. 3) RESTRAINED : Start frequency aggregation for co-located tasks. This type of boost does not force up-migrate any task. Finally the boost API removes ref-counting. This means that there can only be a single entity using boost at any given time. If multiple entities are managing boost, they are required to be well behaved so that they don't interfere with one another. Even for a single client, it is not possible to switch directly from one boost type to another. Boost must be first turned off before switching over to a new type. Change-Id: I8d224a70cbef162f27078b62b73acaa22670861d Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>	2017-02-07 14:51:21 -08:00
Syed Rameez Mustafa	cbf0804d8a	sched: Add multiple load reporting policies for cpu frequency ... The previous patches in this series introduce the mechanics of CPU load tracking without fixups for intra cluster migration and top task load tracking. Add a tunable that dictates what of the above needs to be considered when reporting load to the governor. The default policy is to take the maximum of the CPU load and top task load. Change-Id: Ie585a11ed774b929910d04c41471db3a2a102ec5 Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>	2017-02-07 14:50:55 -08:00
Patrick Bellasi	ffbceda5a2	sched/tune: add initial support for CGroups based boosting ... To support task performance boosting, the usage of a single knob has the advantage to be a simple solution, both from the implementation and the usability standpoint. However, on a real system it can be difficult to identify a single value for the knob which fits the needs of multiple different tasks. For example, some kernel threads and/or user-space background services should be better managed the "standard" way while we still want to be able to boost the performance of specific workloads. In order to improve the flexibility of the task boosting mechanism this patch is the first of a small series which extends the previous implementation to introduce a "per task group" support. This first patch introduces just the basic CGroups support, a new "schedtune" CGroups controller is added which allows to configure different boost value for different groups of tasks. To keep the implementation simple but still effective for a boosting strategy, the new controller: 1. allows only a two layer hierarchy 2. supports only a limited number of boost groups A two layer hierarchy allows to place each task either: a) in the root control group thus being subject to a system-wide boosting value b) in a child of the root group thus being subject to the specific boost value defined by that "boost group" The limited number of "boost groups" supported is mainly motivated by the observation that in a real system it could be useful to have only few classes of tasks which deserve different treatment. For example, background vs foreground or interactive vs low-priority. As an additional benefit, a limited number of boost groups allows also to have a simpler implementation especially for the code required to compute the boost value for CPUs which have runnable tasks belonging to different boost groups. Change-Id: I1304e33a8440bfdad9c8bcf8129ff390216f2e32 cc: Tejun Heo <tj@kernel.org> cc: Li Zefan <lizefan@huawei.com> cc: Johannes Weiner <hannes@cmpxchg.org> cc: Ingo Molnar <mingo@redhat.com> cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Patrick Bellasi <patrick.bellasi@arm.com> Git-commit: 13001f47c9a610705219700af4636386b647e231 Git-repo: https://android.googlesource.com/kernel/common Signed-off-by: Vikram Mulukutla <markivx@codeaurora.org>	2017-02-07 14:50:45 -08:00
Patrick Bellasi	62c1c06921	sched/tune: add sysctl interface to define a boost value ... The current (CFS) scheduler implementation does not allow "to boost" tasks performance by running them at a higher OPP compared to the minimum required to meet their workload demands. To support tasks performance boosting the scheduler should provide a "knob" which allows to tune how much the system is going to be optimised for energy efficiency vs performance. This patch is the first of a series which provides a simple interface to define a tuning knob. One system-wide "boost" tunable is exposed via: /proc/sys/kernel/sched_cfs_boost which can be configured in the range [0..100], to define a percentage where: - 0% boost requires to operate in "standard" mode by scheduling tasks at the minimum capacities required by the workload demand - 100% boost requires to push at maximum the task performances, "regardless" of the incurred energy consumption A boost value in between these two boundaries is used to bias the power/performance trade-off, the higher the boost value the more the scheduler is biased toward performance boosting instead of energy efficiency. Change-Id: I59a41725e2d8f9238a61dfb0c909071b53560fc0 cc: Ingo Molnar <mingo@redhat.com> cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Patrick Bellasi <patrick.bellasi@arm.com> Git-commit: 63c8fad2b06805ef88f1220551289f0a3c3529f1 Git-repo: https://source.codeaurora.org/quic/la/kernel/msm-4.4 Signed-off-by: Vikram Mulukutla <markivx@codeaurora.org>	2017-02-07 14:50:44 -08:00
Pavankumar Kondeti	72b49a3988	sched: add a knob to prefer the waker CPU for sync wakeups ... The current policy has a preference to select an idle CPU in the waker cluster compared to the waker CPU running only 1 task. By selecting an idle CPU, it eliminates the chance of waker migrating to a different CPU after the wakee preempts it. This policy is also not susceptible to the incorrect "sync" usage i.e the waker does not goto sleep after waking up the wakee. However LPM exit latency associated with an idle CPU outweigh the above benefits on some targets. So add a knob to prefer the waker CPU having only 1 runnable task over idle CPUs in the waker cluster. Change-Id: Id974748c07625c1b19112235f426a5d204dfdb33 Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>	2017-02-07 14:50:40 -08:00
Dmitry Shmidt	e37704d2d0	Merge tag 'v4.9.8' into android-4.9 ... This is the 4.9.8 stable release	2017-02-06 13:13:30 -08:00
Eric Dumazet	03707d6c36	sysctl: fix proc_doulongvec_ms_jiffies_minmax() ... commit ff9f8a7cf935468a94d9927c68b00daae701667e upstream. We perform the conversion between kernel jiffies and ms only when exporting kernel value to user space. We need to do the opposite operation when value is written by user. Only matters when HZ != 1000 Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>	2017-02-01 08:33:05 +01:00
Srinath Sridharan	3a73c96a28	ANDROID: sched/walt: Accounting for number of irqs pending on each core ... Schedules on a core whose irq count is less than a threshold. Improves I/O performance of EAS. Change-Id: I08ff7dd0d22502a0106fc636b1af2e6fe9e758b5 Signed-off-by: Andres Oportus <andresoportus@google.com>	2017-01-31 10:46:59 -08:00
Srivatsa Vaddagiri	26c2154816	ANDROID: sched: Introduce Window Assisted Load Tracking (WALT) ... use a window based view of time in order to track task demand and CPU utilization in the scheduler. Window Assisted Load Tracking (WALT) implementation credits: Srivatsa Vaddagiri, Steve Muckle, Syed Rameez Mustafa, Joonwoo Park, Pavan Kumar Kondeti, Olav Haugan 2016-03-06: Integration with EAS/refactoring by Vikram Mulukutla and Todd Kjos Change-Id: I21408236836625d4e7d7de1843d20ed5ff36c708 Includes fixes for issues: eas/walt: Use walt_ktime_clock() instead of ktime_get_ns() to avoid a race resulting in watchdog resets BUG: 29353986 Change-Id: Ic1820e22a136f7c7ebd6f42e15f14d470f6bbbdb Handle walt accounting anomoly during resume During resume, there is a corner case where on wakeup, a task's prev_runnable_sum can go negative. This is a workaround that fixes the condition and warns (instead of crashing). BUG: 29464099 Change-Id: I173e7874324b31a3584435530281708145773508 Signed-off-by: Todd Kjos <tkjos@google.com> Signed-off-by: Srinath Sridharan <srinathsr@google.com> Signed-off-by: Juri Lelli <juri.lelli@arm.com> [jstultz: fwdported to 4.4] Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Andres Oportus <andresoportus@google.com>	2017-01-31 10:46:58 -08:00
Todd Kjos	c6a6f3bfa0	ANDROID: sched/fair: add tunable to set initial task load ... The choice of initial task load upon fork has a large influence on CPU and OPP selection when scheduler-driven DVFS is in use. Make this tuneable by adding a new sysctl "sched_initial_task_util". If the sched governor is not used, the default remains at SCHED_LOAD_SCALE Otherwise, the value from the sysctl is used. This defaults to 0. Signed-off-by: "Todd Kjos <tkjos@google.com>" Signed-off-by: Andres Oportus <andresoportus@google.com>	2017-01-31 10:46:52 -08:00
Juri Lelli	1931b93dba	ANDROID: sched/fair: add tunable to force selection at cpu granularity ... EAS assumes that clusters with smaller capacity cores are more energy-efficient. This may not be true on non-big-little devices, so EAS can make incorrect cluster selections when finding a CPU to wake. The "sched_is_big_little" hint can be used to cause a cpu-based selection instead of cluster-based selection. This change incorporates the addition of the sync hint enable patch EAS did not honour synchronous wakeup hints, a new sysctl is created to ask EAS to use this information when selecting a CPU. The control is called "sched_sync_hint_enable". Also contains: EAS: sched/fair: for SMP bias toward idle core with capacity For SMP devices, on wakeup bias towards idle cores that have capacity vs busy devices that need a higher OPP eas: favor idle cpus for boosted tasks BUG: 29533997 BUG: 29512132 Change-Id: I0cc9a1b1b88fb52916f18bf2d25715bdc3634f9c Signed-off-by: Juri Lelli <juri.lelli@arm.com> Signed-off-by: Srinath Sridharan <srinathsr@google.com> eas/sched/fair: Favoring busy cpus with low OPPs BUG: 29533997 BUG: 29512132 Change-Id: I9305b3239698d64278db715a2e277ea0bb4ece79 Signed-off-by: Juri Lelli <juri.lelli@arm.com> Signed-off-by: Andres Oportus <andresoportus@google.com>	2017-01-31 10:46:51 -08:00
Srinath Sridharan	bf47bdd180	ANDROID: sched: EAS: take cstate into account when selecting idle core ... Introduce a new sysctl for this option, 'sched_cstate_aware'. When this is enabled, select_idle_sibling in CFS is modified to choose the idle CPU in the sibling group which has the lowest idle state index - idle state indexes are assumed to increase as sleep depth and hence wakeup latency increase. In this way, we attempt to minimise wakeup latency when an idle CPU is required. Signed-off-by: Srinath Sridharan <srinathsr@google.com> Includes: sched: EAS: fix select_idle_sibling when sysctl_sched_cstate_aware is enabled, best_idle cpu will not be chosen in the original flow because it will goto done directly Bug: 30107557 Change-Id: Ie09c2e3960cafbb976f8d472747faefab3b4d6ac Signed-off-by: martin_liu <martin_liu@htc.com> Signed-off-by: Andres Oportus <andresoportus@google.com>	2017-01-31 10:46:50 -08:00
Patrick Bellasi	ae71030fd5	ANDROID: sched/tune: add initial support for CGroups based boosting ... To support task performance boosting, the usage of a single knob has the advantage to be a simple solution, both from the implementation and the usability standpoint. However, on a real system it can be difficult to identify a single value for the knob which fits the needs of multiple different tasks. For example, some kernel threads and/or user-space background services should be better managed the "standard" way while we still want to be able to boost the performance of specific workloads. In order to improve the flexibility of the task boosting mechanism this patch is the first of a small series which extends the previous implementation to introduce a "per task group" support. This first patch introduces just the basic CGroups support, a new "schedtune" CGroups controller is added which allows to configure different boost value for different groups of tasks. To keep the implementation simple but still effective for a boosting strategy, the new controller: 1. allows only a two layer hierarchy 2. supports only a limited number of boost groups A two layer hierarchy allows to place each task either: a) in the root control group thus being subject to a system-wide boosting value b) in a child of the root group thus being subject to the specific boost value defined by that "boost group" The limited number of "boost groups" supported is mainly motivated by the observation that in a real system it could be useful to have only few classes of tasks which deserve different treatment. For example, background vs foreground or interactive vs low-priority. As an additional benefit, a limited number of boost groups allows also to have a simpler implementation especially for the code required to compute the boost value for CPUs which have runnable tasks belonging to different boost groups. cc: Tejun Heo <tj@kernel.org> cc: Li Zefan <lizefan@huawei.com> cc: Johannes Weiner <hannes@cmpxchg.org> cc: Ingo Molnar <mingo@redhat.com> cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Patrick Bellasi <patrick.bellasi@arm.com> Signed-off-by: Andres Oportus <andresoportus@google.com>	2017-01-31 10:46:37 -08:00
Patrick Bellasi	69fa4c768a	ANDROID: sched/tune: add sysctl interface to define a boost value ... The current (CFS) scheduler implementation does not allow "to boost" tasks performance by running them at a higher OPP compared to the minimum required to meet their workload demands. To support tasks performance boosting the scheduler should provide a "knob" which allows to tune how much the system is going to be optimised for energy efficiency vs performance. This patch is the first of a series which provides a simple interface to define a tuning knob. One system-wide "boost" tunable is exposed via: /proc/sys/kernel/sched_cfs_boost which can be configured in the range [0..100], to define a percentage where: - 0% boost requires to operate in "standard" mode by scheduling tasks at the minimum capacities required by the workload demand - 100% boost requires to push at maximum the task performances, "regardless" of the incurred energy consumption A boost value in between these two boundaries is used to bias the power/performance trade-off, the higher the boost value the more the scheduler is biased toward performance boosting instead of energy efficiency. cc: Ingo Molnar <mingo@redhat.com> cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Patrick Bellasi <patrick.bellasi@arm.com> Signed-off-by: Andres Oportus <andresoportus@google.com>	2017-01-31 10:46:35 -08:00
David Collins	a1792ad960	sysctl: add boot_reason and cold_boot sysctl entries for arm64 ... Define boot_reason and cold_boot variables in the arm64 version of setup.c so that arm64 targets can export the boot_reason and cold_boot sysctl entries. This feature is required by the qpnp-power-on driver. Change-Id: Id2d4ff5b8caa2e6a35d4ac61e338963d602c8b84 Signed-off-by: David Collins <collinsd@codeaurora.org>	2017-01-11 13:57:48 -08:00
David Keitel	381adf3617	sysctl: add cold_boot sysctl entry ... Add a cold_boot parameter which supplements the boot_reason sysctl entry with information about whether the system was booted from cold or warm state. /proc/sys/kernel/cold_boot entry is updated with 1 or 0 when system was booted from cold or warm boot state respecitively. CRs-Fixed: 461256 Change-Id: I2bc5d80c8f26eb9e9dbb4b34960d991a51a224e4 Signed-off-by: David Keitel <dkeitel@codeaurora.org>	2017-01-11 13:57:41 -08:00
Rick Adams	ea449ffe72	msm: 8x55: put reason for boot in procfs from SMEM ... During board initialization read the shared memory item SMEM_POWER_ON_STATUS_INFO and place it in the procfs at /proc/sys/kernel/boot_reason The data item is an integer with a bit being set to identify the reason the device was powered on. The values of this data item is defined in the document Document/arm/msm/boot.txt, the following is the data in the documentation file. power_on_status values set by the PMIC for power on event: ---------------------------------------------------------- 0x01 -- keyboard power on 0x02 -- RTC alarm 0x04 -- cable power on 0x08 -- SMPL 0x10 -- Watch Dog timeout 0x20 -- USB charger 0x40 -- Wall charger 0xFF -- error reading power_on_status value Change-Id: I59e665f92e6e29f7dfef4380314f676a2d92c94b Signed-off-by: Rick Adams <rgadams@codeaurora.org>	2017-01-11 13:57:32 -08:00
Syed Rameez Mustafa	dddcab78bd	sched: Introduce HMP scheduling ... Add a snapshot of all changes associated with the HMP scheduler ported over to the latest kernel version. This will allow proper big Little scheduling for targets that will use this kernel version. The msm-4-4 snapshot is taken at commitcc60f0790f27 (sched: constrain HMP scheduler tunable range with in better way). Please note that this is not an exact snapshot; certain HMP related code has been removed. This includes redundant code, useless CONFIG options, rarely taken error code paths, runtime enable/disable support for the HMP scheduler. Change-Id: I923f35904008f1fb74ac9c1a39481810cdea5790 Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>	2016-11-18 16:41:31 -08:00
Linus Torvalds	abb5a14fa2	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs ... Pull misc vfs updates from Al Viro: "Assorted misc bits and pieces. There are several single-topic branches left after this (rename2 series from Miklos, current_time series from Deepa Dinamani, xattr series from Andreas, uaccess stuff from from me) and I'd prefer to send those separately" * 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (39 commits) proc: switch auxv to use of __mem_open() hpfs: support FIEMAP cifs: get rid of unused arguments of CIFSSMBWrite() posix_acl: uapi header split posix_acl: xattr representation cleanups fs/aio.c: eliminate redundant loads in put_aio_ring_file fs/internal.h: add const to ns_dentry_operations declaration compat: remove compat_printk() fs/buffer.c: make __getblk_slow() static proc: unsigned file descriptors fs/file: more unsigned file descriptors fs: compat: remove redundant check of nr_segs cachefiles: Fix attempt to read i_blocks after deleting file [ver #2] cifs: don't use memcpy() to copy struct iov_iter get rid of separate multipage fault-in primitives fs: Avoid premature clearing of capabilities fs: Give dentry to inode_change_ok() instead of inode fuse: Propagate dentry down to inode_change_ok() ceph: Propagate dentry down to inode_change_ok() xfs: Propagate dentry down to inode_change_ok() ...	2016-10-10 13:04:49 -07:00
Linus Torvalds	14986a34e1	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace ... Pull namespace updates from Eric Biederman: "This set of changes is a number of smaller things that have been overlooked in other development cycles focused on more fundamental change. The devpts changes are small things that were a distraction until we managed to kill off DEVPTS_MULTPLE_INSTANCES. There is an trivial regression fix to autofs for the unprivileged mount changes that went in last cycle. A pair of ioctls has been added by Andrey Vagin making it is possible to discover the relationships between namespaces when referring to them through file descriptors. The big user visible change is starting to add simple resource limits to catch programs that misbehave. With namespaces in general and user namespaces in particular allowing users to use more kinds of resources, it has become important to have something to limit errant programs. Because the purpose of these limits is to catch errant programs the code needs to be inexpensive to use as it always on, and the default limits need to be high enough that well behaved programs on well behaved systems don't encounter them. To this end, after some review I have implemented per user per user namespace limits, and use them to limit the number of namespaces. The limits being per user mean that one user can not exhause the limits of another user. The limits being per user namespace allow contexts where the limit is 0 and security conscious folks can remove from their threat anlysis the code used to manage namespaces (as they have historically done as it root only). At the same time the limits being per user namespace allow other parts of the system to use namespaces. Namespaces are increasingly being used in application sand boxing scenarios so an all or nothing disable for the entire system for the security conscious folks makes increasing use of these sandboxes impossible. There is also added a limit on the maximum number of mounts present in a single mount namespace. It is nontrivial to guess what a reasonable system wide limit on the number of mount structure in the kernel would be, especially as it various based on how a system is using containers. A limit on the number of mounts in a mount namespace however is much easier to understand and set. In most cases in practice only about 1000 mounts are used. Given that some autofs scenarious have the potential to be 30,000 to 50,000 mounts I have set the default limit for the number of mounts at 100,000 which is well above every known set of users but low enough that the mount hash tables don't degrade unreaonsably. These limits are a start. I expect this estabilishes a pattern that other limits for resources that namespaces use will follow. There has been interest in making inotify event limits per user per user namespace as well as interest expressed in making details about what is going on in the kernel more visible" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: (28 commits) autofs: Fix automounts by using current_real_cred()->uid mnt: Add a per mount namespace limit on the number of mounts netns: move {inc,dec}_net_namespaces into #ifdef nsfs: Simplify __ns_get_path tools/testing: add a test to check nsfs ioctl-s nsfs: add ioctl to get a parent namespace nsfs: add ioctl to get an owning user namespace for ns file descriptor kernel: add a helper to get an owning user namespace for a namespace devpts: Change the owner of /dev/pts/ptmx to the mounter of /dev/pts devpts: Remove sync_filesystems devpts: Make devpts_kill_sb safe if fsi is NULL devpts: Simplify devpts_mount by using mount_nodev devpts: Move the creation of /dev/pts/ptmx into fill_super devpts: Move parse_mount_options into fill_super userns: When the per user per user namespace limit is reached return ENOSPC userns; Document per user per user namespace limits. mntns: Add a limit on the number of mount namespaces. netns: Add a limit on the number of net namespaces cgroupns: Add a limit on the number of cgroup namespaces ipcns: Add a limit on the number of ipc namespaces ...	2016-10-06 09:52:23 -07:00
Eric W. Biederman	d29216842a	mnt: Add a per mount namespace limit on the number of mounts ... CAI Qian <caiqian@redhat.com> pointed out that the semantics of shared subtrees make it possible to create an exponentially increasing number of mounts in a mount namespace. mkdir /tmp/1 /tmp/2 mount --make-rshared / for i in $(seq 1 20) ; do mount --bind /tmp/1 /tmp/2 ; done Will create create 2^20 or 1048576 mounts, which is a practical problem as some people have managed to hit this by accident. As such CVE-2016-6213 was assigned. Ian Kent <raven@themaw.net> described the situation for autofs users as follows: > The number of mounts for direct mount maps is usually not very large because of > the way they are implemented, large direct mount maps can have performance > problems. There can be anywhere from a few (likely case a few hundred) to less > than 10000, plus mounts that have been triggered and not yet expired. > > Indirect mounts have one autofs mount at the root plus the number of mounts that > have been triggered and not yet expired. > > The number of autofs indirect map entries can range from a few to the common > case of several thousand and in rare cases up to between 30000 and 50000. I've > not heard of people with maps larger than 50000 entries. > > The larger the number of map entries the greater the possibility for a large > number of active mounts so it's not hard to expect cases of a 1000 or somewhat > more active mounts. So I am setting the default number of mounts allowed per mount namespace at 100,000. This is more than enough for any use case I know of, but small enough to quickly stop an exponential increase in mounts. Which should be perfect to catch misconfigurations and malfunctioning programs. For anyone who needs a higher limit this can be changed by writing to the new /proc/sys/fs/mount-max sysctl. Tested-by: CAI Qian <caiqian@redhat.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>	2016-09-30 12:46:48 -05:00
Arnd Bergmann	9dcfcda576	compat: remove compat_printk() ... After 7e8e385aaf ("x86/compat: Remove sys32_vm86_warning"), this function has become unused, so we can remove it as well. Link: http://lkml.kernel.org/r/20160617142903.3070388-1-arnd@arndb.de Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>	2016-09-27 21:20:53 -04:00
Alexey Dobriyan	9b80a184ea	fs/file: more unsigned file descriptors ... Propagate unsignedness for grand total of 149 bytes: $ ./scripts/bloat-o-meter ../vmlinux-000 ../obj/vmlinux add/remove: 0/0 grow/shrink: 0/10 up/down: 0/-149 (-149) function old new delta set_close_on_exec 99 98 -1 put_files_struct 201 200 -1 get_close_on_exec 59 58 -1 do_prlimit 498 497 -1 do_execveat_common.isra 1662 1661 -1 __close_fd 178 173 -5 do_dup2 219 204 -15 seq_show 685 660 -25 __alloc_fd 384 357 -27 dup_fd 718 646 -72 It mostly comes from converting "unsigned int" to "long" for bit operations. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>	2016-09-27 18:47:38 -04:00
Subash Abhinov Kasiviswanathan	e7d316a02f	sysctl: handle error writing UINT_MAX to u32 fields ... We have scripts which write to certain fields on 3.18 kernels but this seems to be failing on 4.4 kernels. An entry which we write to here is xfrm_aevent_rseqth which is u32. echo 4294967295 > /proc/sys/net/core/xfrm_aevent_rseqth Commit 230633d109 ("kernel/sysctl.c: detect overflows when converting to int") prevented writing to sysctl entries when integer overflow occurs. However, this does not apply to unsigned integers. Heinrich suggested that we introduce a new option to handle 64 bit limits and set min as 0 and max as UINT_MAX. This might not work as it leads to issues similar to __do_proc_doulongvec_minmax. Alternatively, we would need to change the datatype of the entry to 64 bit. static int __do_proc_doulongvec_minmax(void *data, struct ctl_table { i = (unsigned long *) data; //This cast is causing to read beyond the size of data (u32) vleft = table->maxlen / sizeof(unsigned long); //vleft is 0 because maxlen is sizeof(u32) which is lesser than sizeof(unsigned long) on x86_64. Introduce a new proc handler proc_douintvec. Individual proc entries will need to be updated to use the new handler. [akpm@linux-foundation.org: coding-style fixes] Fixes: 230633d109 ("kernel/sysctl.c:detect overflows when converting to int") Link: http://lkml.kernel.org/r/1471479806-5252-1-git-send-email-subashab@codeaurora.org Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org> Cc: Heinrich Schuchardt <xypron.glpk@gmx.de> Cc: Kees Cook <keescook@chromium.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Ingo Molnar <mingo@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2016-08-26 17:39:35 -07:00
Borislav Petkov	750afe7bab	printk: add kernel parameter to control writes to /dev/kmsg ... Add a "printk.devkmsg" kernel command line parameter which controls how userspace writes into /dev/kmsg. It has three options: * ratelimit - ratelimit logging from userspace. * on - unlimited logging from userspace * off - logging from userspace gets ignored The default setting is to ratelimit the messages written to it. This changes the kernel default setting of "on" to "ratelimit" and we do that because we want to keep userspace spamming /dev/kmsg to sane levels. This is especially moot when a small kernel log buffer wraps around and messages get lost. So the ratelimiting setting should be a sane setting where kernel messages should have a bit higher chance of survival from all the spamming. It additionally does not limit logging to /dev/kmsg while the system is booting if we haven't disabled it on the command line. Furthermore, we can control the logging from a lower priority sysctl interface - kernel.printk_devkmsg. That interface will succeed only if printk.devkmsg *hasn't* been supplied on the command line. If it has, then printk.devkmsg is a one-time setting which remains for the duration of the system lifetime. This "locking" of the setting is to prevent userspace from changing the logging on us through sysctl(2). This patch is based on previous patches from Linus and Steven. [bp@suse.de: fixes] Link: http://lkml.kernel.org/r/20160719072344.GC25563@nazgul.tnic Link: http://lkml.kernel.org/r/20160716061745.15795-3-bp@alien8.de Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Dave Young <dyoung@redhat.com> Cc: Franck Bui <fbui@suse.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2016-08-02 19:35:06 -04:00
Mel Gorman	a5f5f91da6	mm: convert zone_reclaim to node_reclaim ... As reclaim is now per-node based, convert zone_reclaim to be node_reclaim. It is possible that a node will be reclaimed multiple times if it has multiple zones but this is unavoidable without caching all nodes traversed so far. The documentation and interface to userspace is the same from a configuration perspective and will will be similar in behaviour unless the node-local allocation requests were also limited to lower zones. Link: http://lkml.kernel.org/r/1467970510-21195-24-git-send-email-mgorman@techsingularity.net Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Hillf Danton <hillf.zj@alibaba-inc.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Minchan Kim <minchan@kernel.org> Cc: Rik van Riel <riel@surriel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2016-07-28 16:07:41 -07:00
Daniel Bristot de Oliveira	088e9d253d	rcu: sysctl: Panic on RCU Stall ... It is not always easy to determine the cause of an RCU stall just by analysing the RCU stall messages, mainly when the problem is caused by the indirect starvation of rcu threads. For example, when preempt_rcu is not awakened due to the starvation of a timer softirq. We have been hard coding panic() in the RCU stall functions for some time while testing the kernel-rt. But this is not possible in some scenarios, like when supporting customers. This patch implements the sysctl kernel.panic_on_rcu_stall. If set to 1, the system will panic() when an RCU stall takes place, enabling the capture of a vmcore. The vmcore provides a way to analyze all kernel/tasks states, helping out to point to the culprit and the solution for the stall. The kernel.panic_on_rcu_stall sysctl is disabled by default. Changes from v1: - Fixed a typo in the git log - The if(sysctl_panic_on_rcu_stall) panic() is in a static function - Fixed the CONFIG_TINY_RCU compilation issue - The var sysctl_panic_on_rcu_stall is now __read_mostly Cc: Jonathan Corbet <corbet@lwn.net> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Lai Jiangshan <jiangshanlai@gmail.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Reviewed-by: Arnaldo Carvalho de Melo <acme@kernel.org> Tested-by: "Luis Claudio R. Goncalves" <lgoncalv@redhat.com> Signed-off-by: Daniel Bristot de Oliveira <bristot@redhat.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>	2016-06-15 16:00:05 -07:00
Linus Torvalds	bdc6b758e4	Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip ... Pull perf updates from Ingo Molnar: "Mostly tooling and PMU driver fixes, but also a number of late updates such as the reworking of the call-chain size limiting logic to make call-graph recording more robust, plus tooling side changes for the new 'backwards ring-buffer' extension to the perf ring-buffer" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (34 commits) perf record: Read from backward ring buffer perf record: Rename variable to make code clear perf record: Prevent reading invalid data in record__mmap_read perf evlist: Add API to pause/resume perf trace: Use the ptr->name beautifier as default for "filename" args perf trace: Use the fd->name beautifier as default for "fd" args perf report: Add srcline_from/to branch sort keys perf evsel: Record fd into perf_mmap perf evsel: Add overwrite attribute and check write_backward perf tools: Set buildid dir under symfs when --symfs is provided perf trace: Only auto set call-graph to "dwarf" when syscalls are being traced perf annotate: Sort list of recognised instructions perf annotate: Fix identification of ARM blt and bls instructions perf tools: Fix usage of max_stack sysctl perf callchain: Stop validating callchains by the max_stack sysctl perf trace: Fix exit_group() formatting perf top: Use machine->kptr_restrict_warned perf trace: Warn when trying to resolve kernel addresses with kptr_restrict=1 perf machine: Do not bail out if not managing to read ref reloc symbol perf/x86/intel/p4: Trival indentation fix, remove space ...	2016-05-25 17:05:40 -07:00
Hugh Dickins	52b6f46bc1	mm: /proc/sys/vm/stat_refresh to force vmstat update ... Provide /proc/sys/vm/stat_refresh to force an immediate update of per-cpu into global vmstats: useful to avoid a sleep(2) or whatever before checking counts when testing. Originally added to work around a bug which left counts stranded indefinitely on a cpu going idle (an inaccuracy magnified when small below-batch numbers represent "huge" amounts of memory), but I believe that bug is now fixed: nonetheless, this is still a useful knob. Its schedule_on_each_cpu() is probably too expensive just to fold into reading /proc/meminfo itself: give this mode 0600 to prevent abuse. Allow a write or a read to do the same: nothing to read, but "grep -h Shmem /proc/sys/vm/stat_refresh /proc/meminfo" is convenient. Oh, and since global_page_state() itself is careful to disguise any underflow as 0, hack in an "Invalid argument" and pr_warn() if a counter is negative after the refresh - this helped to fix a misaccounting of NR_ISOLATED_FILE in my migration code. But on recent kernels, I find that NR_ALLOC_BATCH and NR_PAGES_SCANNED often go negative some of the time. I have not yet worked out why, but have no evidence that it's actually harmful. Punt for the moment by just ignoring the anomaly on those. Signed-off-by: Hugh Dickins <hughd@google.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Andres Lagar-Cavilla <andreslc@google.com> Cc: Yang Shi <yang.shi@linaro.org> Cc: Ning Qu <quning@gmail.com> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Andres Lagar-Cavilla <andreslc@google.com> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2016-05-19 19:12:14 -07:00
Arnaldo Carvalho de Melo	c85b033496	perf core: Separate accounting of contexts and real addresses in a stack trace ... The perf_sample->ip_callchain->nr value includes all the entries in the ip_callchain->ip[] array, real addresses and PERF_CONTEXT_{KERNEL,USER,etc}, while what the user expects is that what is in the kernel.perf_event_max_stack sysctl or in the upcoming per event perf_event_attr.sample_max_stack knob be honoured in terms of IP addresses in the stack trace. So allocate a bunch of extra entries for contexts, and do the accounting via perf_callchain_entry_ctx struct members. A new sysctl, kernel.perf_event_max_contexts_per_stack is also introduced for investigating possible bugs in the callchain implementation by some arch. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: Wang Nan <wangnan0@huawei.com> Cc: Zefan Li <lizefan@huawei.com> Link: http://lkml.kernel.org/n/tip-3b4wnqk340c4sg4gwkfdi9yk@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>	2016-05-16 23:11:53 -03:00
Arnaldo Carvalho de Melo	a831100aee	perf core: Generalize max_stack sysctl handler ... So that it can be used for other stack related knobs, such as the upcoming one to tweak the max number of of contexts per stack sample. In all those cases we can only change the value if there are no perf sessions collecting stacks, so they need to grab that mutex, etc. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/n/tip-8t3fk94wuzp8m2z1n4gc0s17@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>	2016-05-16 23:11:49 -03:00
Arnaldo Carvalho de Melo	c5dfd78eb7	perf core: Allow setting up max frame stack depth via sysctl ... The default remains 127, which is good for most cases, and not even hit most of the time, but then for some cases, as reported by Brendan, 1024+ deep frames are appearing on the radar for things like groovy, ruby. And in some workloads putting a _lower_ cap on this may make sense. One that is per event still needs to be put in place tho. The new file is: # cat /proc/sys/kernel/perf_event_max_stack 127 Chaging it: # echo 256 > /proc/sys/kernel/perf_event_max_stack # cat /proc/sys/kernel/perf_event_max_stack 256 But as soon as there is some event using callchains we get: # echo 512 > /proc/sys/kernel/perf_event_max_stack -bash: echo: write error: Device or resource busy # Because we only allocate the callchain percpu data structures when there is a user, which allows for changing the max easily, its just a matter of having no callchain users at that point. Reported-and-Tested-by: Brendan Gregg <brendan.d.gregg@gmail.com> Reviewed-by: Frederic Weisbecker <fweisbec@gmail.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: David Ahern <dsahern@gmail.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: Wang Nan <wangnan0@huawei.com> Cc: Zefan Li <lizefan@huawei.com> Link: http://lkml.kernel.org/r/20160426002928.GB16708@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>	2016-04-27 10:20:39 -03:00
Johannes Weiner	795ae7a0de	mm: scale kswapd watermarks in proportion to memory ... In machines with 140G of memory and enterprise flash storage, we have seen read and write bursts routinely exceed the kswapd watermarks and cause thundering herds in direct reclaim. Unfortunately, the only way to tune kswapd aggressiveness is through adjusting min_free_kbytes - the system's emergency reserves - which is entirely unrelated to the system's latency requirements. In order to get kswapd to maintain a 250M buffer of free memory, the emergency reserves need to be set to 1G. That is a lot of memory wasted for no good reason. On the other hand, it's reasonable to assume that allocation bursts and overall allocation concurrency scale with memory capacity, so it makes sense to make kswapd aggressiveness a function of that as well. Change the kswapd watermark scale factor from the currently fixed 25% of the tunable emergency reserve to a tunable 0.1% of memory. Beyond 1G of memory, this will produce bigger watermark steps than the current formula in default settings. Ensure that the new formula never chooses steps smaller than that, i.e. 25% of the emergency reserve. On a 140G machine, this raises the default watermark steps - the distance between min and low, and low and high - from 16M to 143M. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Mel Gorman <mgorman@suse.de> Acked-by: Rik van Riel <riel@redhat.com> Acked-by: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2016-03-17 15:09:34 -07:00
Mel Gorman	cb2517653f	sched/debug: Make schedstats a runtime tunable that is disabled by default ... schedstats is very useful during debugging and performance tuning but it incurs overhead to calculate the stats. As such, even though it can be disabled at build time, it is often enabled as the information is useful. This patch adds a kernel command-line and sysctl tunable to enable or disable schedstats on demand (when it's built in). It is disabled by default as someone who knows they need it can also learn to enable it when necessary. The benefits are dependent on how scheduler-intensive the workload is. If it is then the patch reduces the number of cycles spent calculating the stats with a small benefit from reducing the cache footprint of the scheduler. These measurements were taken from a 48-core 2-socket machine with Xeon(R) E5-2670 v3 cpus although they were also tested on a single socket machine 8-core machine with Intel i7-3770 processors. netperf-tcp 4.5.0-rc1 4.5.0-rc1 vanilla nostats-v3r1 Hmean 64 560.45 ( 0.00%) 575.98 ( 2.77%) Hmean 128 766.66 ( 0.00%) 795.79 ( 3.80%) Hmean 256 950.51 ( 0.00%) 981.50 ( 3.26%) Hmean 1024 1433.25 ( 0.00%) 1466.51 ( 2.32%) Hmean 2048 2810.54 ( 0.00%) 2879.75 ( 2.46%) Hmean 3312 4618.18 ( 0.00%) 4682.09 ( 1.38%) Hmean 4096 5306.42 ( 0.00%) 5346.39 ( 0.75%) Hmean 8192 10581.44 ( 0.00%) 10698.15 ( 1.10%) Hmean 16384 18857.70 ( 0.00%) 18937.61 ( 0.42%) Small gains here, UDP_STREAM showed nothing intresting and neither did the TCP_RR tests. The gains on the 8-core machine were very similar. tbench4 4.5.0-rc1 4.5.0-rc1 vanilla nostats-v3r1 Hmean mb/sec-1 500.85 ( 0.00%) 522.43 ( 4.31%) Hmean mb/sec-2 984.66 ( 0.00%) 1018.19 ( 3.41%) Hmean mb/sec-4 1827.91 ( 0.00%) 1847.78 ( 1.09%) Hmean mb/sec-8 3561.36 ( 0.00%) 3611.28 ( 1.40%) Hmean mb/sec-16 5824.52 ( 0.00%) 5929.03 ( 1.79%) Hmean mb/sec-32 10943.10 ( 0.00%) 10802.83 ( -1.28%) Hmean mb/sec-64 15950.81 ( 0.00%) 16211.31 ( 1.63%) Hmean mb/sec-128 15302.17 ( 0.00%) 15445.11 ( 0.93%) Hmean mb/sec-256 14866.18 ( 0.00%) 15088.73 ( 1.50%) Hmean mb/sec-512 15223.31 ( 0.00%) 15373.69 ( 0.99%) Hmean mb/sec-1024 14574.25 ( 0.00%) 14598.02 ( 0.16%) Hmean mb/sec-2048 13569.02 ( 0.00%) 13733.86 ( 1.21%) Hmean mb/sec-3072 12865.98 ( 0.00%) 13209.23 ( 2.67%) Small gains of 2-4% at low thread counts and otherwise flat. The gains on the 8-core machine were slightly different tbench4 on 8-core i7-3770 single socket machine Hmean mb/sec-1 442.59 ( 0.00%) 448.73 ( 1.39%) Hmean mb/sec-2 796.68 ( 0.00%) 794.39 ( -0.29%) Hmean mb/sec-4 1322.52 ( 0.00%) 1343.66 ( 1.60%) Hmean mb/sec-8 2611.65 ( 0.00%) 2694.86 ( 3.19%) Hmean mb/sec-16 2537.07 ( 0.00%) 2609.34 ( 2.85%) Hmean mb/sec-32 2506.02 ( 0.00%) 2578.18 ( 2.88%) Hmean mb/sec-64 2511.06 ( 0.00%) 2569.16 ( 2.31%) Hmean mb/sec-128 2313.38 ( 0.00%) 2395.50 ( 3.55%) Hmean mb/sec-256 2110.04 ( 0.00%) 2177.45 ( 3.19%) Hmean mb/sec-512 2072.51 ( 0.00%) 2053.97 ( -0.89%) In constract, this shows a relatively steady 2-3% gain at higher thread counts. Due to the nature of the patch and the type of workload, it's not a surprise that the result will depend on the CPU used. hackbench-pipes 4.5.0-rc1 4.5.0-rc1 vanilla nostats-v3r1 Amean 1 0.0637 ( 0.00%) 0.0660 ( -3.59%) Amean 4 0.1229 ( 0.00%) 0.1181 ( 3.84%) Amean 7 0.1921 ( 0.00%) 0.1911 ( 0.52%) Amean 12 0.3117 ( 0.00%) 0.2923 ( 6.23%) Amean 21 0.4050 ( 0.00%) 0.3899 ( 3.74%) Amean 30 0.4586 ( 0.00%) 0.4433 ( 3.33%) Amean 48 0.5910 ( 0.00%) 0.5694 ( 3.65%) Amean 79 0.8663 ( 0.00%) 0.8626 ( 0.43%) Amean 110 1.1543 ( 0.00%) 1.1517 ( 0.22%) Amean 141 1.4457 ( 0.00%) 1.4290 ( 1.16%) Amean 172 1.7090 ( 0.00%) 1.6924 ( 0.97%) Amean 192 1.9126 ( 0.00%) 1.9089 ( 0.19%) Some small gains and losses and while the variance data is not included, it's close to the noise. The UMA machine did not show anything particularly different pipetest 4.5.0-rc1 4.5.0-rc1 vanilla nostats-v2r2 Min Time 4.13 ( 0.00%) 3.99 ( 3.39%) 1st-qrtle Time 4.38 ( 0.00%) 4.27 ( 2.51%) 2nd-qrtle Time 4.46 ( 0.00%) 4.39 ( 1.57%) 3rd-qrtle Time 4.56 ( 0.00%) 4.51 ( 1.10%) Max-90% Time 4.67 ( 0.00%) 4.60 ( 1.50%) Max-93% Time 4.71 ( 0.00%) 4.65 ( 1.27%) Max-95% Time 4.74 ( 0.00%) 4.71 ( 0.63%) Max-99% Time 4.88 ( 0.00%) 4.79 ( 1.84%) Max Time 4.93 ( 0.00%) 4.83 ( 2.03%) Mean Time 4.48 ( 0.00%) 4.39 ( 1.91%) Best99%Mean Time 4.47 ( 0.00%) 4.39 ( 1.91%) Best95%Mean Time 4.46 ( 0.00%) 4.38 ( 1.93%) Best90%Mean Time 4.45 ( 0.00%) 4.36 ( 1.98%) Best50%Mean Time 4.36 ( 0.00%) 4.25 ( 2.49%) Best10%Mean Time 4.23 ( 0.00%) 4.10 ( 3.13%) Best5%Mean Time 4.19 ( 0.00%) 4.06 ( 3.20%) Best1%Mean Time 4.13 ( 0.00%) 4.00 ( 3.39%) Small improvement and similar gains were seen on the UMA machine. The gain is small but it stands to reason that doing less work in the scheduler is a good thing. The downside is that the lack of schedstats and tracepoints may be surprising to experts doing performance analysis until they find the existence of the schedstats= parameter or schedstats sysctl. It will be automatically activated for latencytop and sleep profiling to alleviate the problem. For tracepoints, there is a simple warning as it's not safe to activate schedstats in the context when it's known the tracepoint may be wanted but is unavailable. Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk> Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <mgalbraith@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1454663316-22048-1-git-send-email-mgorman@techsingularity.net Signed-off-by: Ingo Molnar <mingo@kernel.org>	2016-02-09 11:54:23 +01:00
Linus Torvalds	eadee0ce6f	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs ... Pull more vfs updates from Al Viro: "Embarrassing braino fix + pipe page accounting + fixing an eyesore in find_filesystem() (checking that s1 is equal to prefix of s2 of given length can be done in many ways, but "compare strlen(s1) with length and then do strncmp()" is not a good one...)" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: [regression] fix braino in fs/dlm/user.c pipe: limit the per-user amount of pages allocated in pipes find_filesystem(): simplify comparison	2016-01-22 10:24:03 -08:00
Kees Cook	41662f5cc5	sysctl: enable strict writes ... SYSCTL_WRITES_WARN was added in commit f4aacea2f5 ("sysctl: allow for strict write position handling"), and released in v3.16 in August of 2014. Since then I can find only 1 instance of non-zero offset writing[1], and it was fixed immediately in CRIU[2]. As such, it appears safe to flip this to the strict state now. [1] https://www.google.com/search?q="when%20file%20position%20was%20not%200" [2] http://lists.openvz.org/pipermail/criu/2015-April/019819.html Signed-off-by: Kees Cook <keescook@chromium.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2016-01-20 17:09:18 -08:00
Willy Tarreau	759c01142a	pipe: limit the per-user amount of pages allocated in pipes ... On no-so-small systems, it is possible for a single process to cause an OOM condition by filling large pipes with data that are never read. A typical process filling 4000 pipes with 1 MB of data will use 4 GB of memory. On small systems it may be tricky to set the pipe max size to prevent this from happening. This patch makes it possible to enforce a per-user soft limit above which new pipes will be limited to a single page, effectively limiting them to 4 kB each, as well as a hard limit above which no new pipes may be created for this user. This has the effect of protecting the system against memory abuse without hurting other users, and still allowing pipes to work correctly though with less data at once. The limit are controlled by two new sysctls : pipe-user-pages-soft, and pipe-user-pages-hard. Both may be disabled by setting them to zero. The default soft limit allows the default number of FDs per process (1024) to create pipes of the default size (64kB), thus reaching a limit of 64MB before starting to create only smaller pipes. With 256 processes limited to 1024 FDs each, this results in 1024*64kB + (256*1024 - 1024) * 4kB = 1084 MB of memory allocated for a user. The hard limit is disabled by default to avoid breaking existing applications that make intensive use of pipes (eg: for splicing). Reported-by: socketpair@gmail.com Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Mitigates: CVE-2013-4312 (Linux 2.0+) Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>	2016-01-19 19:25:21 -05:00
Daniel Cashman	d07e22597d	mm: mmap: add new /proc tunable for mmap_base ASLR ... Address Space Layout Randomization (ASLR) provides a barrier to exploitation of user-space processes in the presence of security vulnerabilities by making it more difficult to find desired code/data which could help an attack. This is done by adding a random offset to the location of regions in the process address space, with a greater range of potential offset values corresponding to better protection/a larger search-space for brute force, but also to greater potential for fragmentation. The offset added to the mmap_base address, which provides the basis for the majority of the mappings for a process, is set once on process exec in arch_pick_mmap_layout() and is done via hard-coded per-arch values, which reflect, hopefully, the best compromise for all systems. The trade-off between increased entropy in the offset value generation and the corresponding increased variability in address space fragmentation is not absolute, however, and some platforms may tolerate higher amounts of entropy. This patch introduces both new Kconfig values and a sysctl interface which may be used to change the amount of entropy used for offset generation on a system. The direct motivation for this change was in response to the libstagefright vulnerabilities that affected Android, specifically to information provided by Google's project zero at: http://googleprojectzero.blogspot.com/2015/09/stagefrightened.html The attack presented therein, by Google's project zero, specifically targeted the limited randomness used to generate the offset added to the mmap_base address in order to craft a brute-force-based attack. Concretely, the attack was against the mediaserver process, which was limited to respawning every 5 seconds, on an arm device. The hard-coded 8 bits used resulted in an average expected success rate of defeating the mmap ASLR after just over 10 minutes (128 tries at 5 seconds a piece). With this patch, and an accompanying increase in the entropy value to 16 bits, the same attack would take an average expected time of over 45 hours (32768 tries), which makes it both less feasible and more likely to be noticed. The introduced Kconfig and sysctl options are limited by per-arch minimum and maximum values, the minimum of which was chosen to match the current hard-coded value and the maximum of which was chosen so as to give the greatest flexibility without generating an invalid mmap_base address, generally a 3-4 bits less than the number of bits in the user-space accessible virtual address space. When decided whether or not to change the default value, a system developer should consider that mmap_base address could be placed anywhere up to 2^(value) bits away from the non-randomized location, which would introduce variable-sized areas above and below the mmap_base address such that the maximum vm_area_struct size may be reduced, preventing very large allocations. This patch (of 4): ASLR only uses as few as 8 bits to generate the random offset for the mmap base address on 32 bit architectures. This value was chosen to prevent a poorly chosen value from dividing the address space in such a way as to prevent large allocations. This may not be an issue on all platforms. Allow the specification of a minimum number of bits so that platforms desiring greater ASLR protection may determine where to place the trade-off. Signed-off-by: Daniel Cashman <dcashman@google.com> Cc: Russell King <linux@arm.linux.org.uk> Acked-by: Kees Cook <keescook@chromium.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Don Zickus <dzickus@redhat.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Heinrich Schuchardt <xypron.glpk@gmx.de> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: David Rientjes <rientjes@google.com> Cc: Mark Salyzyn <salyzyn@android.com> Cc: Jeff Vander Stoep <jeffv@google.com> Cc: Nick Kralevich <nnk@google.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Hector Marco-Gisbert <hecmargi@upv.es> Cc: Borislav Petkov <bp@suse.de> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2016-01-14 16:00:49 -08:00
Al Viro	70f6cbb6f9	kernel/*: switch to memdup_user_nul() ... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>	2016-01-04 10:27:55 -05:00
Don Zickus	ac1f591249	kernel/watchdog.c: add sysctl knob hardlockup_panic ... The only way to enable a hardlockup to panic the machine is to set 'nmi_watchdog=panic' on the kernel command line. This makes it awkward for end users and folks who want to run automate tests (like myself). Mimic the softlockup_panic knob and create a /proc/sys/kernel/hardlockup_panic knob. Signed-off-by: Don Zickus <dzickus@redhat.com> Cc: Ulrich Obergfell <uobergfe@redhat.com> Acked-by: Jiri Kosina <jkosina@suse.cz> Reviewed-by: Aaron Tomlin <atomlin@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2015-11-05 19:34:48 -08:00
Jiri Kosina	55537871ef	kernel/watchdog.c: perform all-CPU backtrace in case of hard lockup ... In many cases of hardlockup reports, it's actually not possible to know why it triggered, because the CPU that got stuck is usually waiting on a resource (with IRQs disabled) in posession of some other CPU is holding. IOW, we are often looking at the stacktrace of the victim and not the actual offender. Introduce sysctl / cmdline parameter that makes it possible to have hardlockup detector perform all-CPU backtrace. Signed-off-by: Jiri Kosina <jkosina@suse.cz> Reviewed-by: Aaron Tomlin <atomlin@redhat.com> Cc: Ulrich Obergfell <uobergfe@redhat.com> Acked-by: Don Zickus <dzickus@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2015-11-05 19:34:48 -08:00
Alexei Starovoitov	1be7f75d16	bpf: enable non-root eBPF programs ... In order to let unprivileged users load and execute eBPF programs teach verifier to prevent pointer leaks. Verifier will prevent - any arithmetic on pointers (except R10+Imm which is used to compute stack addresses) - comparison of pointers (except if (map_value_ptr == 0) ... ) - passing pointers to helper functions - indirectly passing pointers in stack to helper functions - returning pointer from bpf program - storing pointers into ctx or maps Spill/fill of pointers into stack is allowed, but mangling of pointers stored in the stack or reading them byte by byte is not. Within bpf programs the pointers do exist, since programs need to be able to access maps, pass skb pointer to LD_ABS insns, etc but programs cannot pass such pointer values to the outside or obfuscate them. Only allow BPF_PROG_TYPE_SOCKET_FILTER unprivileged programs, so that socket filters (tcpdump), af_packet (quic acceleration) and future kcm can use it. tracing and tc cls/act program types still require root permissions, since tracing actually needs to be able to see all kernel pointers and tc is for root only. For example, the following unprivileged socket filter program is allowed: int bpf_prog1(struct __sk_buff *skb) { u32 index = load_byte(skb, ETH_HLEN + offsetof(struct iphdr, protocol)); u64 *value = bpf_map_lookup_elem(&my_map, &index); if (value) *value += skb->len; return 0; } but the following program is not: int bpf_prog1(struct __sk_buff *skb) { u32 index = load_byte(skb, ETH_HLEN + offsetof(struct iphdr, protocol)); u64 *value = bpf_map_lookup_elem(&my_map, &index); if (value) *value += (u64) skb; return 0; } since it would leak the kernel address into the map. Unprivileged socket filter bpf programs have access to the following helper functions: - map lookup/update/delete (but they cannot store kernel pointers into them) - get_random (it's already exposed to unprivileged user space) - get_smp_processor_id - tail_call into another socket filter program - ktime_get_ns The feature is controlled by sysctl kernel.unprivileged_bpf_disabled. This toggle defaults to off (0), but can be set true (1). Once true, bpf programs and maps cannot be accessed from unprivileged process, and the toggle cannot be set back to false. Signed-off-by: Alexei Starovoitov <ast@plumgrid.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: David S. Miller <davem@davemloft.net>	2015-10-12 19:13:35 -07:00
Ilya Dryomov	9a5bc726d5	sysctl: fix int -> unsigned long assignments in INT_MIN case ... The following if (val < 0) *lvalp = (unsigned long)-val; is incorrect because the compiler is free to assume -val to be positive and use a sign-extend instruction for extending the bit pattern. This is a problem if val == INT_MIN: # echo -2147483648 >/proc/sys/dev/scsi/logging_level # cat /proc/sys/dev/scsi/logging_level -18446744071562067968 Cast to unsigned long before negation - that way we first sign-extend and then negate an unsigned, which is well defined. With this: # cat /proc/sys/dev/scsi/logging_level -2147483648 Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Cc: Mikulas Patocka <mikulas@twibright.com> Cc: Robert Xiao <nneonneo@gmail.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Kees Cook <keescook@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2015-09-10 13:29:01 -07:00