From: Christian König Date: Wed, 24 Jun 2026 14:00:41 +0000 (+0200) Subject: drm/amdgpu: fix check in amdgpu_hmm_invalidate_gfx X-Git-Tag: v7.2-rc2~10^2~2^2~12 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=52f650963d8825e97a0ccdd2b616f8a01d9d3d38;p=thirdparty%2Fkernel%2Flinux.git drm/amdgpu: fix check in amdgpu_hmm_invalidate_gfx For a short moment during alloc/free the userptr BO is not part of his VM, so bo->vm_bo can be NULL. Keep a reference to the VM root PD as parent of the userptr BO so that we can always use that to wait for all submissions of the VM instead of only the one involving the userptr BO. Signed-off-by: Christian König Fixes: 91250893cbaa ("drm/amdgpu: fix waiting for all submissions for userptrs") Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/5399 Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher (cherry picked from commit 631849ff5d603841e74f19f4a5e30fe1f7d7cf30) Cc: stable@vger.kernel.org --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c index 76da3f932f24..6a0699746fbc 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c @@ -535,6 +535,7 @@ int amdgpu_gem_userptr_ioctl(struct drm_device *dev, void *data, bo = gem_to_amdgpu_bo(gobj); bo->preferred_domains = AMDGPU_GEM_DOMAIN_GTT; bo->allowed_domains = AMDGPU_GEM_DOMAIN_GTT; + bo->parent = amdgpu_bo_ref(fpriv->vm.root.bo); r = amdgpu_ttm_tt_set_userptr(&bo->tbo, args->addr, args->flags); if (r) goto release_object; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c index 99bc9ad67d5b..a7d13e337d84 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c @@ -67,7 +67,6 @@ static bool amdgpu_hmm_invalidate_gfx(struct mmu_interval_notifier *mni, { struct amdgpu_bo *bo = container_of(mni, struct amdgpu_bo, notifier); struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev); - struct amdgpu_bo *vm_root = bo->vm_bo->vm->root.bo; long r; if (!mmu_notifier_range_blockable(range)) @@ -78,7 +77,7 @@ static bool amdgpu_hmm_invalidate_gfx(struct mmu_interval_notifier *mni, mmu_interval_set_seq(mni, cur_seq); amdgpu_vm_bo_invalidate(bo, false); - r = dma_resv_wait_timeout(vm_root->tbo.base.resv, + r = dma_resv_wait_timeout(bo->parent->tbo.base.resv, DMA_RESV_USAGE_BOOKKEEP, false, MAX_SCHEDULE_TIMEOUT); mutex_unlock(&adev->notifier_lock);