Corrupt EEPROM data can set tbl_size below the table header size.
Guard the RAS_NUM_RECS macros against undersized tbl_size and reset
the table during init when tbl_size is below the minimum for the table
version instead of trusting the header.
Signed-off-by: Candice Li <candice.li@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
amdgpu_ras_inject_error() currently prints an extra "ras inject block %u
failed" message, remove the redundant log.
Signed-off-by: Stanley.Yang <Stanley.Yang@amd.com>
Reviewed-by: YiPeng Chai <YiPeng.Chai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
The response header lives in PF-controlled shared memory. Copy it
into a local struct once, then read cmd_res and output_size from the
snapshot so the PF cannot flip cmd_res or grow output_size between
checks.
Signed-off-by: Stanley.Yang <Stanley.Yang@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Return RAS TA injection result to userspace that avoid
app continue to load work once injection failed.
Signed-off-by: Stanley.Yang <Stanley.Yang@amd.com>
Reviewed-by: YiPeng Chai <YiPeng.Chai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Drop new entries once pending_ecc_count hits RAS_UMC_PENDING_ECC_MAX
(8192) so an ECC storm or repeated UMC error injection cannot exhaust
kernel memory. Dropped events are counted and reported via a
rate-limited warning.
Signed-off-by: Stanley.Yang <Stanley.Yang@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
The guest maps the PF response in shared VRAM (struct ras_cmd_ctx in the
command buffer). After amdgpu_virt_send_remote_ras_cmd() returns, the code
validated rcmd->output_size against the caller buffer, then copied
rcmd->output_buff_raw using rcmd->output_size again. A malicious PF could
change output_size between those reads so the memcpy length exceeds the
caller’s output_size and overflows guest stack or heap buffers.
Snapshot output_size with READ_ONCE() once, assign cmd->output_size from
that value, and use the same snapshot for the bounds check and memcpy.
Also read cmd_res once with READ_ONCE() so the error branch and
cmd->cmd_res assignment do not observe different values from shared memory.
Signed-off-by: Chenglei Xie <Chenglei.Xie@amd.com>
Reviewed-by: YiPeng Chai <YiPeng.Chai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
When generating ras cper file, the original data nodes in the ras
log ring buffer may be deleted, leading to invalid pointer
access. Copy the data from the ras log ring instead of directly
referencing the pointers to avoid this issue.
Signed-off-by: YiPeng Chai <YiPeng.Chai@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Bound CPER record fetch allocation by buffer size.
v2: Drop redundant cap on cper_num and raise
GET_CPER_RECORD max buffer size.
Suggested-by: YiPeng Chai <YiPeng.Chai@amd.com>
Signed-off-by: Candice Li <candice.li@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
The SMU EEPROM read paths pass byte-sized record field addresses
to mca_ipid_parse(), whose outputs are u32 pointers.
Writing through those widened pointers can clobber adjacent fields
and bytes beyond the record storage.
Parse the IPID values into local u32 temporaries instead, then
explicitly narrow the values when storing them in the EEPROM record.
Signed-off-by: Xiang Liu <xiang.liu@amd.com>
Reviewed-by: Stanley.Yang <Stanley.Yang@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
amdgpu_virt_ras_get_batch_records() indexed batchs[] and records[]
from ras_cmd_batch_trace_record_rsp copied out of shared memory without
fully bounding the cache window or per-batch offset/trace_num. A
tampered or corrupted buffer could set real_batch_num past the array,
make a naive start_batch_id + real_batch_num comparison wrap in
uint64_t, or point offset+trace_num past records[].
Add amdgpu_virt_ras_check_batch_cached() for a subtraction-based window
with a real_batch_num cap, re-run it after GET_BATCH_TRACE_RECORD, and
use an explicit batch index into batchs[]. Consolidate batch_id,
trace_num, and offset+trace_num checks; on any failure memset the cache
and return -EIO so the next call refetches.
Signed-off-by: Chenglei Xie <Chenglei.Xie@amd.com>
Reviewed-by: YiPeng Chai <YiPeng.Chai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
VF sends IDH_REQ_GPU_FINI_ACCESS before hw_fini during unload.
PF no longer accepts requests, so skip ECC status update to prevent
mailbox timeout.
Signed-off-by: Ce Sun <cesun102@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
ras_umc_log_pending_bad_bank() walks through a list of pending ECC
bad-bank entries. These entries are saved when a bad-bank error cannot
be processed immediately, for example during a GPU reset.
Later, this function iterates over the pending list and retries logging
each bad-bank error. If logging succeeds, the entry is removed from the
list and the memory for that node is freed.
The loop uses list_for_each_entry_safe(), which already guarantees that
ecc_node points to a valid list entry while the loop body is executing.
Checking "ecc_node &&" inside the loop is therefore unnecessary and
redundant.
Fixes the below:
drivers/gpu/drm/amd/amdgpu/../ras/rascore/ras_umc.c:225 ras_umc_log_pending_bad_bank() warn: variable dereferenced before check 'ecc_node' (see line 223)
Fixes: 7a3f9c0992 ("drm/amd/ras: Add umc common ras functions")
Cc: Dan Carpenter <dan.carpenter@linaro.org>
Cc: YiPeng Chai <YiPeng.Chai@amd.com>
Cc: Tao Zhou <tao.zhou1@amd.com>
Cc: Hawking Zhang <Hawking.Zhang@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: YiPeng Chai <YiPeng.Chai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
ras_core_get_utc_second_timestamp() retrieves the current UTC timestamp
(in seconds since the Unix epoch) through a platform-specific RAS system
callback and is used for timestamping RAS error events.
The function checks ras_core in the conditional statement before calling
the sys_fn callback. However, when the condition fails, the function
prints an error message using ras_core->dev.
If ras_core is NULL, this can lead to a potential NULL pointer
dereference when accessing ras_core->dev.
Add an early NULL check for ras_core at the beginning of the function
and return 0 when the pointer is not valid. This prevents the
dereference and makes the control flow clearer.
Fixes: 13c91b5b43 ("drm/amd/ras: Add rascore unified interface function")
Cc: YiPeng Chai <YiPeng.Chai@amd.com>
Cc: Dan Carpenter <dan.carpenter@linaro.org>
Cc: Tao Zhou <tao.zhou1@amd.com>
Cc: Hawking Zhang <Hawking.Zhang@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: YiPeng Chai <YiPeng.Chai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Add unified interface to handle ras interrupts, some redundant
interrupt function interfaces will be removed later.
Signed-off-by: YiPeng Chai <YiPeng.Chai@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
read bad page data from pmfw eeprom when retirement
is triggered, use timestamp read from eeprom
Signed-off-by: Gangliang Xie <ganglxie@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
add read func for pmfw eeprom, and adapt address converting
for bad pages loaded from pmfw eeprom
v2: change label 'Out' to 'out'
Signed-off-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Gangliang Xie <ganglxie@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
add a new IPID parse interface for umc, so we can
implement it for each ASIC, and so we can call it
in other blocks
Signed-off-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Gangliang Xie <ganglxie@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
add flag to indicate if pmfw eeprom is supported or
not, and initialize it
v2: change copyright from 2025 to 2026
Signed-off-by: Gangliang Xie <ganglxie@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
add smu interfaces and its data structures for
pmfw eeprom in uniras
v2: add 'const' to smu messages array, and specify
index for each member when initializing.
Signed-off-by: Gangliang Xie <ganglxie@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Reviewed-by: Yang Wang <kevinyang.wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Since the PAGE_SIZE is 8KB on sparc64, the size of
structure amdsriov_ras_telemetry will exceed 64KB,
so use absolute value to fix the buffer size.
Fixes the issue:
drivers/gpu/drm/amd/amdgpu/amdgv_sriovmsg.h:522:2: error: static
assertion failed due to requirement 'sizeof(struct
amdsriov_ras_telemetry) <= 64 << 10': amdsriov_ras_telemetry must be 64 KB
| sizeof(struct amdsriov_ras_telemetry) <=
AMD_SRIOV_MSG_RAS_TELEMETRY_SIZE_KB_V1 << 10,
drivers/gpu/drm/amd/amdgpu/amdgv_sriovmsg.h:522:40: note:
expression evaluates to '115616 <= 65536'
| sizeof(struct amdsriov_ras_telemetry) <=
AMD_SRIOV_MSG_RAS_TELEMETRY_SIZE_KB_V1 << 10,
Fixes: cb48a6b2b6 ("drm/amd/ras: use dedicated memory as vf ras command buffer")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202602261700.rVOLIw4l-lkp@intel.com/
Signed-off-by: YiPeng Chai <YiPeng.Chai@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Warning: drivers/gpu/drm/amd/amdgpu/../ras/rascore/ras_eeprom.c:845 function parameter 'ras_core' not described in 'ras_eeprom_append'
Warning: drivers/gpu/drm/amd/amdgpu/../ras/rascore/ras_eeprom.c:845 expecting prototype for ras_core_eeprom_append(). Prototype was for ras_eeprom_append() instead
Fixes: 5c3be5defc ("drm/amd/ras: Add eeprom ras functions")
Signed-off-by: Yujie Liu <yujie.liu@intel.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Forcing an int to be dereferenced at uint64_t for div64_u64_rem() runs
the risk of endian confusion and stack overflowing writes. Seen while
preparing to enable -Warray-bounds globally:
In file included from ../arch/x86/include/asm/processor.h:35,
from ../include/linux/sched.h:13,
from ../include/linux/ratelimit.h:6,
from ../include/linux/dev_printk.h:16,
from ../drivers/gpu/drm/amd/amdgpu/../ras/ras_mgr/ras_sys.h:29,
from ../drivers/gpu/drm/amd/amdgpu/../ras/rascore/ras.h:27,
from ../drivers/gpu/drm/amd/amdgpu/../ras/rascore/ras_core.c:24:
In function 'div64_u64_rem',
inlined from 'ras_core_convert_timestamp_to_time' at ../drivers/gpu/drm/amd/amdgpu/../ras/rascore/ras_core.c:72:9:
../include/linux/math64.h:56:20: error: array subscript 'u64 {aka long long unsigned int}[0]' is partly outside array bounds of 'int[1]' [-Werror=array-bounds=]
56 | *remainder = dividend % divisor;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
../drivers/gpu/drm/amd/amdgpu/../ras/rascore/ras_core.c: In function 'ras_core_convert_timestamp_to_time':
../drivers/gpu/drm/amd/amdgpu/../ras/rascore/ras_core.c:70:19: note: object 'remaining_seconds' of size 4
70 | int days, remaining_seconds;
| ^~~~~~~~~~~~~~~~~
Use a 64-bit type for the remainder calculation, but leave
remaining_seconds as 32-bit to avoid 64-bit division later. The value of
remainder will always be less than seconds_per_day, so there's no
truncation risk.
Fixes: ace232eff5 ("drm/amdgpu: Add ras module files into amdgpu")
Signed-off-by: Kees Cook <kees@kernel.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This converts some of the visually simpler cases that have been split
over multiple lines. I only did the ones that are easy to verify the
resulting diff by having just that final GFP_KERNEL argument on the next
line.
Somebody should probably do a proper coccinelle script for this, but for
me the trivial script actually resulted in an assertion failure in the
middle of the script. I probably had made it a bit _too_ trivial.
So after fighting that far a while I decided to just do some of the
syntactically simpler cases with variations of the previous 'sed'
scripts.
The more syntactically complex multi-line cases would mostly really want
whitespace cleanup anyway.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Candice Li
Stanley.Yang
Chenglei Xie
Gangliang Xie
YiPeng Chai
Ce Sun
Xiang Liu
Lijo Lazar
Srinivasan Shanmugam
Tao Zhou
Yujie Liu
Kees Cook
Jinzhou Su
Linus Torvalds