Unverified Commit 30b94f5b authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!6017 drm/amdgpu: fix use-after-free bug 

Merge Pull Request from: @ci-robot 
 
PR sync from: Zhenzeng Su <suzhenzeng@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/TPBDRSS5C6HS3TNVOPL3DQONXR73VVE3/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9DO1Z 
 
Link:https://gitee.com/openeuler/kernel/pulls/6017

 

Reviewed-by: default avatarKefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
parents 93c5ac03 57e12e6f

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

+16 −4
Original line number Diff line number Diff line
@@ -132,13 +132,25 @@ static const struct mmu_interval_notifier_ops amdgpu_mn_hsa_ops = { 
 */

int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr)

{

	int r;



	if (bo->kfd_bo)

		return mmu_interval_notifier_insert(&bo->notifier, current->mm,

		r = mmu_interval_notifier_insert(&bo->notifier, current->mm,

						    addr, amdgpu_bo_size(bo),

						    &amdgpu_mn_hsa_ops);

	return mmu_interval_notifier_insert(&bo->notifier, current->mm, addr,

	else

		r = mmu_interval_notifier_insert(&bo->notifier, current->mm, addr,

							amdgpu_bo_size(bo),

							&amdgpu_mn_gfx_ops);

	if (r)

		/*

		 * Make sure amdgpu_mn_unregister() doesn't call

		 * mmu_interval_notifier_remove() when the notifier isn't properly

		 * initialized.

		 */

		bo->notifier.mm = NULL;



	return r;

}



/**