Files
StarPilot/tinygrad_repo/extra/nv_gpu_driver/nv_ioctl.py
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firestar5683 22a8575199 Vendor dependencies and resources for standalone builds
Keep official openpilot ancestry and dependency licenses. Store resources directly in Git, remove LFS setup requirements, and leave the downloadable big model outside the source tree.
2026-10-03 21:01:18 +00:00

367 lines
19 KiB
Python

# type: ignore
import ctypes, ctypes.util, struct, platform, pathlib, re, time, os, signal
from tinygrad.helpers import from_mv, to_mv, getenv
from tinygrad.runtime.support.c import init_c_struct_t
from hexdump import hexdump
start = time.perf_counter()
# *** ioctl lib ***
libc = ctypes.CDLL(ctypes.util.find_library("c"))
processor = platform.processor()
IOCTL_SYSCALL = {"aarch64": 0x1d, "x86_64":16}[processor]
MMAP_SYSCALL = {"aarch64": 0xde, "x86_64":0x09}[processor]
IOCTL_PRINT = getenv("IOCTL_PRINT", getenv("IOCTL", 0))
GRAB_PMA = getenv("GRAB_PMA", 0)
def get_struct(argp, stype):
return ctypes.cast(ctypes.c_void_p(argp), ctypes.POINTER(stype)).contents
def dump_struct(st):
if IOCTL_PRINT == 0: return
print("\t", st.__class__.__name__, end=" { ")
for v in type(st)._real_fields_: print(f"{v[0]}={getattr(st, v[0])}", end=" ")
print("}")
def format_struct(s):
sdats = []
for field in s._real_fields_:
dat = getattr(s, field[0])
if isinstance(dat, int): sdats.append(f"{field[0]}:0x{dat:X}")
else: sdats.append(f"{field[0]}:{dat}")
return sdats
real_func_pool = {}
def install_hook(c_function, python_function):
orig_func = (ctypes.c_char*4096)()
python_function_addr = ctypes.cast(ctypes.byref(python_function), ctypes.POINTER(ctypes.c_ulong)).contents.value
# AARCH64 trampoline to ioctl
if processor == "aarch64":
# 0x0000000000000000: 70 00 00 10 adr x16, #0xc
# 0x0000000000000004: 10 02 40 F9 ldr x16, [x16]
# 0x0000000000000008: 00 02 1F D6 br x16
tramp = b"\x70\x00\x00\x10\x10\x02\x40\xf9\x00\x02\x1f\xd6"
tramp += struct.pack("Q", python_function_addr)
elif processor == "x86_64":
# 0x0000000000000000: 49 BB aa aa aa aa aa aa aa aa movabs r11, <address>
# 0x000000000000000a: 41 FF E3 jmp r11
tramp = b"\x49\xBB" + struct.pack("Q", python_function_addr) + b"\x41\xFF\xE3"
else:
raise Exception(f"processor {processor} not supported")
# get real ioctl address
ioctl_address = ctypes.cast(ctypes.byref(c_function), ctypes.POINTER(ctypes.c_ulong))
# hook ioctl
ret = libc.mprotect(ctypes.c_ulong((ioctl_address.contents.value//0x1000)*0x1000), 0x2000, 7)
assert ret == 0
ret = libc.mprotect(ctypes.c_ulong((ctypes.addressof(orig_func)//0x1000)*0x1000), 0x3000, 7)
assert ret == 0
libc.memcpy(orig_func, ioctl_address.contents, 0x1000)
libc.memcpy(ioctl_address.contents, ctypes.create_string_buffer(tramp), len(tramp))
return orig_func
# *** ioctl lib end ***
# PMA buffer tracking for raw PC sampling data (only when GRAB_PMA is enabled)
pma_mem_handle = 0 # hMemPmaBuffer from ALLOC_PMA_STREAM
pma_buffer_size = 0
pma_buffer_va = 0 # actual mapped VA (found via /proc/self/maps)
pma_get_offset = 0 # current read offset in ring buffer
pma_pending_map = False # flag to check for new mapping on next ioctl
pma_maps_before = set() # mappings before MAP_MEMORY
pma_raw_dumps: list[bytes] = [] # raw PMA buffer dumps
def get_pma_raw_dumps() -> list[bytes]: return pma_raw_dumps
def clear_pma_raw_dumps(): pma_raw_dumps.clear()
def get_proc_maps():
"""Read current process memory mappings as set of (start, end) tuples."""
result = set()
with open("/proc/self/maps", "r") as f:
for line in f:
addr_range = line.split()[0]
start, end = addr_range.split("-")
result.add((int(start, 16), int(end, 16)))
return result
from tinygrad.runtime.autogen import nv_570 as nv_gpu
nvescs = {getattr(nv_gpu, x):x for x in dir(nv_gpu) if x.startswith("NV_ESC")}
nvcmds = {getattr(nv_gpu, x):(x, getattr(nv_gpu, "struct_"+x+"_PARAMS", getattr(nv_gpu, "struct_"+x.replace("_CMD_", "_")+"_PARAMS", None))) for x in dir(nv_gpu) if \
x.startswith("NV") and x[6:].startswith("_CTRL_") and isinstance(getattr(nv_gpu, x), int)}
def get_classes():
res = {}
known_classes = {"NV01_DEVICE_0", "NV01_ROOT", "NV1_MEMORY_SYSTEM", "NV01_MEMORY_VIRTUAL", "NV1_MEMORY_USER", "NV50_MEMORY_VIRTUAL", "NV_FERMI_VASPACE_A",
"NV20_SUBDEVICE_0"}
for nm,val in nv_gpu.__dict__.items():
if not isinstance(val, int): continue
if nm.endswith("PARAMETERS_MESSAGE_ID"): continue
if 0x3000 < val < 0xffff: res[val] = nm
if nm in known_classes: res[val] = nm
return res
nvclasses = get_classes()
nvuvms = {getattr(nv_gpu, x):x for x in dir(nv_gpu) if x.startswith("UVM_") and nv_gpu.__dict__.get(x+"_PARAMS")}
nvqcmds = {int(getattr(nv_gpu, x)):x for x in dir(nv_gpu) if x[:7] in {"NVC9B0_", "NVC6C0_", "NVC56F_", "NVC6B5_"} and isinstance(getattr(nv_gpu, x), int)}
global_ioctl_id = 0
gpus_user_modes = []
gpus_mmio = []
gpus_fifo = []
offset_load = 0
@ctypes.CFUNCTYPE(ctypes.c_int, ctypes.c_int, ctypes.c_ulong, ctypes.c_void_p)
def ioctl(fd, request, argp):
global global_ioctl_id, gpus_user_modes, gpus_mmio
global pma_mem_handle, pma_buffer_size, pma_buffer_va, pma_get_offset, pma_pending_map, pma_maps_before
global_ioctl_id += 1
# Check for new PMA buffer mapping from previous MAP_MEMORY call (only when GRAB_PMA is enabled)
if GRAB_PMA and pma_pending_map:
pma_pending_map = False
new_maps = get_proc_maps()
for start, end in new_maps - pma_maps_before:
if end - start == pma_buffer_size:
pma_buffer_va = start
if IOCTL_PRINT >= 1: print(f"\t PMA buffer mapped at CPU VA=0x{pma_buffer_va:x}")
break
st = time.perf_counter()
ret = libc.syscall(IOCTL_SYSCALL, ctypes.c_int(fd), ctypes.c_ulong(request), ctypes.c_void_p(argp))
et = time.perf_counter()-st
fn = os.readlink(f"/proc/self/fd/{fd}")
idir, size, itype, nr = (request>>30), (request>>16)&0x3FFF, (request>>8)&0xFF, request&0xFF
if IOCTL_PRINT >= 1: print(f"#{global_ioctl_id}: ", end="")
if itype == ord(nv_gpu.NV_IOCTL_MAGIC):
if nr == nv_gpu.NV_ESC_RM_CONTROL:
s = get_struct(argp, nv_gpu.NVOS54_PARAMETERS)
if s.cmd in nvcmds:
name, struc = nvcmds[s.cmd]
if IOCTL_PRINT >= 1:
print(f"NV_ESC_RM_CONTROL cmd={name:30s} hClient={s.hClient}, hObject={s.hObject}, flags={s.flags}, params={s.params}, paramsSize={s.paramsSize}, status={s.status}")
if struc is not None: dump_struct(get_struct(s.params, struc))
elif hasattr(nv_gpu, name+"_PARAMS"): dump_struct(get_struct(argp, getattr(nv_gpu, name+"_PARAMS")))
elif name == "NVA06C_CTRL_CMD_GPFIFO_SCHEDULE": dump_struct(get_struct(argp, nv_gpu.NVA06C_CTRL_GPFIFO_SCHEDULE_PARAMS))
elif name == "NV83DE_CTRL_CMD_GET_MAPPINGS": dump_struct(get_struct(s.params, nv_gpu.NV83DE_CTRL_DEBUG_GET_MAPPINGS_PARAMETERS))
elif name == "NVB0CC_CTRL_CMD_SET_HS_CREDITS":
hs_params = get_struct(s.params, nv_gpu.NVB0CC_CTRL_SET_HS_CREDITS_PARAMS)
dump_struct(hs_params)
if IOCTL_PRINT >= 2:
for i in range(hs_params.numEntries):
print(f"\t\t", end="")
dump_struct(hs_params.creditInfo[i])
# PMA buffer tracking (only when GRAB_PMA is enabled)
if GRAB_PMA and name == "NVB0CC_CTRL_CMD_ALLOC_PMA_STREAM":
pma_params = get_struct(s.params, nv_gpu.struct_NVB0CC_CTRL_ALLOC_PMA_STREAM_PARAMS)
pma_mem_handle = pma_params.hMemPmaBuffer
pma_buffer_size = pma_params.pmaBufferSize
pma_get_offset = 0 # Reset read offset for new stream
if IOCTL_PRINT >= 1: print(f"\t PMA buffer: hMem=0x{pma_mem_handle:x} size={pma_buffer_size}")
if GRAB_PMA and name == "NVB0CC_CTRL_CMD_PMA_STREAM_UPDATE_GET_PUT":
pma_update = get_struct(s.params, nv_gpu.struct_NVB0CC_CTRL_PMA_STREAM_UPDATE_GET_PUT_PARAMS)
if pma_update.bytesAvailable > 0 and pma_buffer_va and pma_buffer_size > 0:
avail = pma_update.bytesAvailable
read_offset = pma_get_offset
# Handle ring buffer wrap-around
if pma_get_offset + avail <= pma_buffer_size:
pma_data = bytes(to_mv(pma_buffer_va + pma_get_offset, avail))
else:
# Wrap around: read to end, then from start
first_part = pma_buffer_size - pma_get_offset
second_part = avail - first_part
pma_data = bytes(to_mv(pma_buffer_va + pma_get_offset, first_part)) + bytes(to_mv(pma_buffer_va, second_part))
pma_raw_dumps.append(pma_data)
pma_get_offset = (pma_get_offset + avail) % pma_buffer_size
if IOCTL_PRINT >= 2:
print(f"\t PMA data: {avail} bytes from offset=0x{read_offset:x}, new offset=0x{pma_get_offset:x}")
hexdump(pma_data)
# Dump regOps for EXEC_REG_OPS when IOCTL >= 3
if name == "NVB0CC_CTRL_CMD_EXEC_REG_OPS" and struc is not None and IOCTL_PRINT >= 3:
reg_params = get_struct(s.params, struc)
for i in range(reg_params.regOpCount):
print(f"\t\t", end="")
dump_struct(reg_params.regOps[i])
# val = (op.regValueHi << 32) | op.regValueLo
# print(f"\t regOps[{i:3d}]: op={op.regOp} type={op.regType} status={op.regStatus} offset=0x{op.regOffset:08x} value=0x{val:016x}")
else:
if IOCTL_PRINT >= 1: print("unhandled cmd", hex(s.cmd))
# format_struct(s)
# print(f"{(st-start)*1000:7.2f} ms +{et*1000.:7.2f} ms : {ret:2d} = {name:40s}", ' '.join(format_struct(s)))
elif nr == nv_gpu.NV_ESC_RM_ALLOC:
s = get_struct(argp, nv_gpu.NVOS21_PARAMETERS)
if IOCTL_PRINT >= 1: print(f"NV_ESC_RM_ALLOC hClass={nvclasses.get(s.hClass, f'unk=0x{s.hClass:X}'):30s}, hRoot={s.hRoot}, hObjectParent={s.hObjectParent}, pAllocParms={s.pAllocParms}, hObjectNew={s.hObjectNew} status={s.status}")
if s.pAllocParms is not None:
if s.hClass == nv_gpu.NV01_DEVICE_0: dump_struct(get_struct(s.pAllocParms, nv_gpu.NV0080_ALLOC_PARAMETERS))
if s.hClass == nv_gpu.FERMI_VASPACE_A: dump_struct(get_struct(s.pAllocParms, nv_gpu.NV_VASPACE_ALLOCATION_PARAMETERS))
if s.hClass == nv_gpu.NV50_MEMORY_VIRTUAL: dump_struct(get_struct(s.pAllocParms, nv_gpu.NV_MEMORY_ALLOCATION_PARAMS))
if s.hClass == nv_gpu.NV1_MEMORY_USER: dump_struct(get_struct(s.pAllocParms, nv_gpu.NV_MEMORY_ALLOCATION_PARAMS))
if s.hClass == nv_gpu.NV1_MEMORY_SYSTEM: dump_struct(get_struct(s.pAllocParms, nv_gpu.NV_MEMORY_ALLOCATION_PARAMS))
if s.hClass == nv_gpu.GT200_DEBUGGER: dump_struct(get_struct(s.pAllocParms, nv_gpu.NV83DE_ALLOC_PARAMETERS))
if s.hClass == nv_gpu.MAXWELL_PROFILER_DEVICE: dump_struct(get_struct(s.pAllocParms, nv_gpu.NVB2CC_ALLOC_PARAMETERS))
if s.hClass in {nv_gpu.AMPERE_CHANNEL_GPFIFO_A, nv_gpu.BLACKWELL_CHANNEL_GPFIFO_A}:
sx = get_struct(s.pAllocParms, nv_gpu.NV_CHANNELGPFIFO_ALLOCATION_PARAMETERS)
dump_struct(sx)
gpus_fifo.append((sx.gpFifoOffset, sx.gpFifoEntries))
if s.hClass == nv_gpu.KEPLER_CHANNEL_GROUP_A: dump_struct(get_struct(s.pAllocParms, nv_gpu.NV_CHANNEL_GROUP_ALLOCATION_PARAMETERS))
if s.hClass == nv_gpu.TURING_USERMODE_A: gpus_user_modes.append(s.hObjectNew)
elif nr == nv_gpu.NV_ESC_RM_MAP_MEMORY:
# nv_ioctl_nvos33_parameters_with_fd
s = get_struct(argp, nv_gpu.NVOS33_PARAMETERS)
if IOCTL_PRINT >= 1:
print(f"NV_ESC_RM_MAP_MEMORY hClient={s.hClient}, hDevice={s.hDevice}, hMemory={s.hMemory}, length={s.length} flags={s.flags} pLinearAddress={s.pLinearAddress}")
# Track PMA buffer mapping - save maps now, check for new mapping on next ioctl (after mmap happens)
if GRAB_PMA and pma_mem_handle and s.hMemory == pma_mem_handle:
pma_maps_before = get_proc_maps()
pma_pending_map = True
elif nr == nv_gpu.NV_ESC_RM_UPDATE_DEVICE_MAPPING_INFO:
if IOCTL_PRINT >= 1:
s = get_struct(argp, nv_gpu.NVOS56_PARAMETERS)
print(f"NV_ESC_RM_UPDATE_DEVICE_MAPPING_INFO hClient={s.hClient}, hDevice={s.hDevice}, hMemory={s.hMemory}, pOldCpuAddress={s.pOldCpuAddress} pNewCpuAddress={s.pNewCpuAddress} status={s.status}")
elif nr == nv_gpu.NV_ESC_RM_ALLOC_MEMORY:
if IOCTL_PRINT >= 1:
s = get_struct(argp, nv_gpu.nv_ioctl_nvos02_parameters_with_fd)
print(f"NV_ESC_RM_ALLOC_MEMORY fd={s.fd}, hRoot={s.params.hRoot}, hObjectParent={s.params.hObjectParent}, hObjectNew={s.params.hObjectNew}, hClass={s.params.hClass}, flags={s.params.flags}, pMemory={s.params.pMemory}, limit={s.params.limit}, status={s.params.status}")
elif nr == nv_gpu.NV_ESC_ALLOC_OS_EVENT:
if IOCTL_PRINT >= 1:
s = get_struct(argp, nv_gpu.nv_ioctl_alloc_os_event_t)
print(f"NV_ESC_ALLOC_OS_EVENT hClient={s.hClient} hDevice={s.hDevice} fd={s.fd} Status={s.Status}")
elif nr == nv_gpu.NV_ESC_REGISTER_FD:
if IOCTL_PRINT >= 1:
s = get_struct(argp, nv_gpu.nv_ioctl_register_fd_t)
print(f"NV_ESC_REGISTER_FD fd={s.ctl_fd}")
elif nr in nvescs:
if IOCTL_PRINT >= 1: print(nvescs[nr])
else:
if IOCTL_PRINT >= 1: print("unhandled NR", nr)
elif fn.endswith("nvidia-uvm"):
if IOCTL_PRINT >= 1:
print(f"{nvuvms.get(request, f'UVM UNKNOWN {request=}')}")
if nvuvms.get(request) is not None: dump_struct(get_struct(argp, getattr(nv_gpu, nvuvms.get(request)+"_PARAMS")))
if nvuvms.get(request) == "UVM_MAP_EXTERNAL_ALLOCATION":
st = get_struct(argp, getattr(nv_gpu, nvuvms.get(request)+"_PARAMS"))
for i in range(st.gpuAttributesCount):
print("perGpuAttributes[{i}] = ", end="")
dump_struct(st.perGpuAttributes[i])
if IOCTL_PRINT >= 2: print("ioctl", f"{idir=} {size=} {itype=} {nr=} {fd=} {ret=}", fn)
return ret
@ctypes.CFUNCTYPE(ctypes.c_void_p, ctypes.c_void_p, ctypes.c_size_t, ctypes.c_int, ctypes.c_int, ctypes.c_int, ctypes.c_long)
def _mmap(addr, length, prot, flags, fd, offset):
mmap_type = ctypes.CFUNCTYPE(ctypes.c_void_p, ctypes.c_void_p, ctypes.c_size_t, ctypes.c_int, ctypes.c_int, ctypes.c_int, ctypes.c_long)
orig_mmap = mmap_type(ctypes.addressof(orig_mmap_mv))
ret = orig_mmap(addr, length, prot, flags, fd, offset)
# ll = os.readlink(f"/proc/self/fd/{fd}") if fd >= 0 else ""
print(f"mmap {addr=}, {length=}, {prot=}, {flags=}, {fd=}, {offset=} {ret=}")
return ret
install_hook(libc.ioctl, ioctl)
if getenv("IOCTL") >= 4: orig_mmap_mv = install_hook(libc.mmap, _mmap)
import collections
old_gpputs = collections.defaultdict(int)
def _dump_gpfifo(mark):
launches = []
print("_dump_gpfifo:", mark)
for start, size in gpus_fifo:
gpfifo_controls = nv_gpu.AmpereAControlGPFifo.from_address(start+size*8)
gpfifo = to_mv(start, size * 8).cast("Q")
while old_gpputs[start] != gpfifo_controls.GPPut:
addr = ((gpfifo[old_gpputs[start]] & ((1 << 40)-1)) >> 2) << 2
pckt_cnt = (gpfifo[old_gpputs[start]]>>42)&((1 << 20)-1)
# print(f"\t{i}: 0x{gpfifo[i % size]:x}: addr:0x{addr:x} packets:{pckt_cnt} sync:{(gpfifo[i % size] >> 63) & 0x1} fetch:{gpfifo[i % size] & 0x1}")
x = _dump_qmd(addr, pckt_cnt)
if isinstance(x, list): launches += x
old_gpputs[start] += 1
old_gpputs[start] %= size
return launches
import types
def make_qmd_struct_type():
fields: List[Tuple[str, Union[Type[ctypes.c_uint64], Type[ctypes.c_uint32]], Any]] = []
bits = [(name,dt) for name,dt in nv_gpu.__dict__.items() if name.startswith("NVC6C0_QMDV03_00") and isinstance(dt, tuple)]
bits += [(name+f"_{i}",dt(i)) for name,dt in nv_gpu.__dict__.items() for i in range(8) if name.startswith("NVC6C0_QMDV03_00") and callable(dt)]
bits = sorted(bits, key=lambda x: x[1][1])
for i,(name, data) in enumerate(bits):
if i > 0 and (gap:=(data[1] - bits[i-1][1][0] - 1)) != 0: fields.append((f"_reserved{i}", ctypes.c_uint32, gap))
fields.append((name.replace("NVC6C0_QMDV03_00_", "").lower(), ctypes.c_uint32, data[0]-data[1]+1))
if len(fields) >= 2 and fields[-2][0].endswith('_lower') and fields[-1][0].endswith('_upper') and fields[-1][0][:-6] == fields[-2][0][:-6]:
fields = fields[:-2] + [(fields[-1][0][:-6], ctypes.c_uint64, fields[-1][2] + fields[-2][2])]
return init_c_struct_t(0x40 * 4, tuple(fields))
qmd_struct_t = make_qmd_struct_type()
assert ctypes.sizeof(qmd_struct_t) == 0x40 * 4
def _dump_qmd(address, packets):
qmds = []
gpfifo = to_mv(address, packets * 4).cast("I")
i = 0
while i < packets:
dat = gpfifo[i]
typ = (dat>>28) & 0xF
if typ == 0: break
size = (dat>>16) & 0xFFF
subc = (dat>>13) & 7
mthd = (dat<<2) & 0x7FFF
method_name = nvqcmds.get(mthd, f"unknown method #{mthd}")
if IOCTL_PRINT >= 1:
print(f"\t\t{method_name}, {typ=} {size=} {subc=} {mthd=}")
for j in range(size): print(f"\t\t\t{j}: {gpfifo[i+j+1]} | 0x{gpfifo[i+j+1]:x}")
if mthd == 792:
qmds.append(qmd_struct_t.from_address(address + 12 + i * 4))
elif mthd == nv_gpu.NVC6C0_SEND_PCAS_A:
qmds.append(qmd_struct_t.from_address(gpfifo[i+1] << 8))
i += size + 1
return qmds
# This is to be used in fuzzer, check cuda/nv side by side.
# Return a state which should be compare and compare function.
def before_launch(): _dump_gpfifo("before launch")
def collect_last_launch_state(): return _dump_gpfifo("after launch")
def compare_launch_state(states, good_states):
states = states or list()
good_states = good_states or list()
if len(states) != 1 or len(good_states) != 1:
return False, f"Some states not captured. {len(states)}!=1 || {len(good_states)}!=1"
for i in range(len(states)):
state, good_state = states[i], good_states[i]
for n in ['qmd_major_version', 'invalidate_shader_data_cache', 'invalidate_shader_data_cache',
'sm_global_caching_enable', 'invalidate_texture_header_cache', 'invalidate_texture_sampler_cache',
'barrier_count', 'sampler_index', 'api_visible_call_limit', 'cwd_membar_type', 'sass_version',
'max_sm_config_shared_mem_size', 'register_count_v', 'shared_memory_size']:
if getattr(state, n) != getattr(good_state, n):
return False, f"Field {n} mismatch: {getattr(state, n)} vs {getattr(good_state, n)}"
# Allow NV to allocate more, at least this is not exact problem, so ignore it here.
# Hmm, CUDA minimum is 0x640, is this hw-required minimum (will check)?
if state.shader_local_memory_high_size < good_state.shader_local_memory_high_size and good_state.shader_local_memory_high_size > 0x640:
return False, f"Field shader_local_memory_high_size mismatch: {state.shader_local_memory_high_size}vs{good_state.shader_local_memory_high_size}"
# TODO: Can't request more, since it might not be optimal, but need to investigate their formula for this.. #7133
if state.min_sm_config_shared_mem_size > good_state.min_sm_config_shared_mem_size and good_state.min_sm_config_shared_mem_size > 5:
return (False,
f"Field min_sm_config_shared_mem_size mismatch: {state.min_sm_config_shared_mem_size}vs{good_state.min_sm_config_shared_mem_size}")
if state.target_sm_config_shared_mem_size > good_state.target_sm_config_shared_mem_size and good_state.target_sm_config_shared_mem_size > 5:
return (False,
f"Field target_sm_config_shared_mem_size mismatch: {state.target_sm_config_shared_mem_size}vs{good_state.target_sm_config_shared_mem_size}")
for i in range(8):
if i in {1, 7}: continue # shaders don't use that. what's cuda put here?
n = f"constant_buffer_valid_{i}"
if getattr(state, n) != getattr(good_state, n):
return False, f"Field {n} mismatch: {getattr(state, n)} vs {getattr(good_state, n)}"
return True, "PASS"
# IOCTL=1 CUDA=1 CUDA_PTX=1 python3 test/test_ops.py TestOps.test_tiny_add