diff options
| author | Oleg Drokin <green@linuxhacker.ru> | 2014-01-31 15:41:58 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-03-23 21:38:20 -0700 |
| commit | f1352fb2a38e6d57c9ec7f96c5449db616e04ef2 (patch) | |
| tree | dba67f489584be6eb848eb265660a39e1c6a81de | |
| parent | ed93fb01a3991ced713a37bc844ed2f2abef8ea8 (diff) | |
| download | lwn-f1352fb2a38e6d57c9ec7f96c5449db616e04ef2.tar.gz lwn-f1352fb2a38e6d57c9ec7f96c5449db616e04ef2.zip | |
Fix mountpoint reference leakage in linkat
commit d22e6338db7f613dd4f6095c190682fcc519e4b7 upstream.
Recent changes to retry on ESTALE in linkat
(commit 442e31ca5a49e398351b2954b51f578353fdf210)
introduced a mountpoint reference leak and a small memory
leak in case a filesystem link operation returns ESTALE
which is pretty normal for distributed filesystems like
lustre, nfs and so on.
Free old_path in such a case.
[AV: there was another missing path_put() nearby - on the previous
goto retry]
Signed-off-by: Oleg Drokin: <green@linuxhacker.ru>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/namei.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/namei.c b/fs/namei.c index cccaf77e76c5..1211ee5a1cb3 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -3655,6 +3655,7 @@ retry: out_dput: done_path_create(&new_path, new_dentry); if (retry_estale(error, how)) { + path_put(&old_path); how |= LOOKUP_REVAL; goto retry; } |