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

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

Fixes: 0995c2fc39 ("drm/xe: Enforce correct user fence signaling order using")
Cc: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Shuicheng Lin <shuicheng.lin@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260219233516.2938172-6-shuicheng.lin@intel.com
(cherry picked from commit a5d5634cde48a9fcd68c8504aa07f89f175074a0)
Cc: stable@vger.kernel.org
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
Shuicheng Lin 2026-02-19 23:35:19 +00:00 • committed by Rodrigo Vivi
parent 1bfd757509
commit 0879c3f04f
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GPG key ID: FA625F640EEB13CA
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/xe/xe_sync.c
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@ -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;
}