Unverified Commit 0879c3f0 authored by Shuicheng Lin's avatar Shuicheng Lin Committed by Rodrigo Vivi
Browse files

drm/xe/sync: Fix user fence leak on alloc failure 



When dma_fence_chain_alloc() fails, properly release the user fence
reference to prevent a memory leak.

Fixes: 0995c2fc ("drm/xe: Enforce correct user fence signaling order using")
Cc: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: default avatarShuicheng Lin <shuicheng.lin@intel.com>
Reviewed-by: default avatarMatthew Brost <matthew.brost@intel.com>
Signed-off-by: default avatarMatthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260219233516.2938172-6-shuicheng.lin@intel.com


(cherry picked from commit a5d5634c)
Cc: stable@vger.kernel.org
Signed-off-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
parent 1bfd7575

drivers/gpu/drm/xe/xe_sync.c

+4 −2
Original line number Diff line number Diff line
@@ -206,8 +206,10 @@ int xe_sync_entry_parse(struct xe_device *xe, struct xe_file *xef, 
			if (XE_IOCTL_DBG(xe, IS_ERR(sync->ufence)))

				return PTR_ERR(sync->ufence);

			sync->ufence_chain_fence = dma_fence_chain_alloc();

			if (!sync->ufence_chain_fence)

				return -ENOMEM;

			if (!sync->ufence_chain_fence) {

				err = -ENOMEM;

				goto free_sync;

			}

			sync->ufence_syncobj = ufence_syncobj;

		}