From d20340405f39f0139c4cd420ce993a09822d9a98 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Christian=20K=C3=B6nig?= Date: Wed, 5 Sep 2018 17:04:44 +0200 Subject: [PATCH 0237/2940] drm/amdgpu: set bulk_moveable to false when a per VM is released MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Otherwise we might run into a use after free during bulk move. Signed-off-by: Christian König Reviewed-by: Huang Rui --- drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index 1a8a299f552e..f12c050aaae3 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -2466,8 +2466,12 @@ void amdgpu_vm_bo_rmv(struct amdgpu_device *adev, struct amdgpu_bo_va *bo_va) { struct amdgpu_bo_va_mapping *mapping, *next; + struct amdgpu_bo *bo = bo_va->base.bo; struct amdgpu_vm *vm = bo_va->base.vm; + if (bo && bo->tbo.resv == vm->root.base.bo->tbo.resv) + vm->bulk_moveable = false; + list_del(&bo_va->base.bo_list); spin_lock(&vm->moved_lock); -- 2.17.1