xfs: fix allocbt cursor leak in xfs_alloc_ag_vextent_near

When we fail to find an matching extent near the requested extent specification during a left-right distance search in xfs_alloc_ag_vextent_near, we fail to free the original cursor that we used to look up the XFS_BTNUM_CNT tree and hence leak it. Reported-by: Chris J Arges <[email protected]> Signed-off-by: Dave Chinner <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Signed-off-by: Ben Myers <[email protected]>
wangbin579 · Jun 21, 2012 · 76d0953 · 76d0953
1 parent 9a3a5da
commit 76d0953
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/fs/xfs/xfs_alloc.c b/fs/xfs/xfs_alloc.c
@@ -1080,6 +1080,7 @@ xfs_alloc_ag_vextent_near(
 			goto restart;
 		}
 
+		xfs_btree_del_cursor(cnt_cur, XFS_BTREE_NOERROR);
 		trace_xfs_alloc_size_neither(args);
 		args->agbno = NULLAGBLOCK;
 		return 0;