drm/amdkfd: Fix potential deallocation of previously deallocated memory.

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[ Upstream commit cabbdea1f1 ]

Pointer mqd_mem_obj can be deallocated in kfd_gtt_sa_allocate().
The function then returns non-zero value, which causes the second deallocation.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: d1f8f0d17d ("drm/amdkfd: Move non-sdma mqd allocation out of init_mqd")
Signed-off-by: Daniil Dulov <d.dulov@aladdin.ru>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Daniil Dulov 2023-05-11 04:23:14 -07:00 • committed by Greg Kroah-Hartman

parent 355d340352

commit 069cfe458f

1 changed files with 7 additions and 6 deletions

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drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c

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