drm/amdgpu: fix GEM object leak on ENOMEM in userptr ioctl

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When amdgpu_hmm_range_alloc() fails amdgpu_gem_userptr_ioctl() returns
-ENOMEM right away and skips the cleanup every other error path goes
through. The GEM object, the bo->parent reference on the VM root and the
MMU notifier registration are all left behind.

Use release_object here, not user_pages_done, range is still NULL at
this point.

Fixes: e095b55155 ("drm/amdgpu: use user provided hmm_range buffer in amdgpu_ttm_tt_get_user_pages")
Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit bbe739e407a542073ec1a7872b14843566b4919e)
Cc: stable@vger.kernel.org

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Perry Yuan 2026-09-10 17:13:39 +08:00 • committed by Alex Deucher

parent a2eae9f4fa

commit 3c516a5646

1 changed files with 4 additions and 2 deletions

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drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c

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