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[PATCH 097/102] xfs: fix allocbt cursor leak in xfs_alloc_ag_vextent_nea

To: xfs@xxxxxxxxxxx
Subject: [PATCH 097/102] xfs: fix allocbt cursor leak in xfs_alloc_ag_vextent_near
From: Dave Chinner <david@xxxxxxxxxxxxx>
Date: Thu, 23 Aug 2012 15:02:55 +1000
In-reply-to: <1345698180-13612-1-git-send-email-david@xxxxxxxxxxxxx>
References: <1345698180-13612-1-git-send-email-david@xxxxxxxxxxxxx>
From: Dave Chinner <dchinner@xxxxxxxxxx>

Upstream commit: 76d095388b040229ea1aad7dea45be0cfa20f589

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 <chris.j.arges@xxxxxxxxxxxxx>
Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Ben Myers <bpm@xxxxxxx>
 fs/xfs/xfs_alloc.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/xfs/xfs_alloc.c b/fs/xfs/xfs_alloc.c
index 726418e..679c049 100644
--- a/fs/xfs/xfs_alloc.c
+++ b/fs/xfs/xfs_alloc.c
@@ -1087,6 +1087,7 @@ restart:
                        goto restart;
+               xfs_btree_del_cursor(cnt_cur, XFS_BTREE_NOERROR);
                args->agbno = NULLAGBLOCK;
                return 0;

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