github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-09-22 04:34:03 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

drm/amdgpu/mes: Add NULL check for mes_hung_db_array allocation

Browse Source 
kcalloc but does not check for failure. If the allocation fails, the
pointer remains NULL but the function returns success. Subsequent code
using this buffer will dereference a NULL pointer, causing a kernel
oops. Add a check to return -ENOMEM if the allocation fails.

Signed-off-by: Geoffrey McRae <geoffrey.mcrae@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Geoffrey McRae 2026-06-28 16:17:01 +10:00 committed by Alex Deucher
parent f4c7d8293f
commit f3f622b43e
1 changed files with 9 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
View File

@ -250,11 +250,16 @@ int amdgpu_mes_init(struct amdgpu_device *adev)
goto error_doorbell;
}
}
}
adev->gfx.mec.mes_hung_db_array =
kcalloc(amdgpu_mes_get_hung_queue_db_array_size(adev),
sizeof(u32), GFP_KERNEL);
adev->gfx.mec.mes_hung_db_array =
kcalloc(amdgpu_mes_get_hung_queue_db_array_size(adev),
sizeof(u32), GFP_KERNEL);
if (!adev->gfx.mec.mes_hung_db_array) {
r = -ENOMEM;
goto error_doorbell;
}
}
return 0;