github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-08-01 03:59:40 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

drm/xe/oa: Fix exec_queue leak on width check in stream open

Browse Source 
In xe_oa_stream_open_ioctl(), when param.exec_q->width > 1 the
function returns -EOPNOTSUPP directly, skipping the existing
err_exec_q cleanup path. The exec_queue reference obtained by
xe_exec_queue_lookup() is leaked.

The exec queue holds a reference on the xe_file, which is only
dropped during queue teardown. The leaked lookup ref is not on
the file's exec_queue xarray, so file close cannot release it.
This keeps both the exec queue and the file private state pinned
indefinitely.

Jump to err_exec_q instead of returning directly so the reference
is released.

Fixes: f0ed39830e ("xe/oa: Fix query mode of operation for OAR/OAC")
Assisted-by: Claude:claude-opus-4.6
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Link: https://patch.msgid.link/20260514203210.593488-1-shuicheng.lin@intel.com
Signed-off-by: Shuicheng Lin <shuicheng.lin@intel.com>
This commit is contained in:
Shuicheng Lin 2026-05-14 20:32:10 +00:00
parent 8d8395e943
commit 339fa0be9e
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/gpu/drm/xe/xe_oa.c
View File

@ -2051,8 +2051,10 @@ int xe_oa_stream_open_ioctl(struct drm_device *dev, u64 data, struct drm_file *f
if (XE_IOCTL_DBG(oa->xe, !param.exec_q))
return -ENOENT;
if (XE_IOCTL_DBG(oa->xe, param.exec_q->width > 1))
return -EOPNOTSUPP;
if (XE_IOCTL_DBG(oa->xe, param.exec_q->width > 1)) {
ret = -EOPNOTSUPP;
goto err_exec_q;
}
}
/*