diff options
| author | Eric Sandeen <sandeen@sandeen.net> | 2015-03-25 06:54:25 +0300 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2015-03-25 06:54:25 +0300 |
| commit | b26384dc52edba2f5fcc2b38eccc98e1f44bb379 (patch) | |
| tree | b2a82b58703fa68c9ab9a3175fa86006b0bb3efc /fs/xfs/xfs_filestream.c | |
| parent | d64588ca28bcd58f100f7933d0c18c8b504162bb (diff) | |
| download | linux-b26384dc52edba2f5fcc2b38eccc98e1f44bb379.tar.xz | |
xfs: fix NULL pointer dereference in xfs_filestream_lookup_ag()
If xfs_filestream_get_parent() fails, we have a null pip,
goto out, and attempt to IRELE(NULL). This causes a null
pointer dereference and BUG().
Fix this by directly returning NULLAGNUMBER in this case.
Reported-by: Adrien Nader <adrien@notk.org>
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_filestream.c')
| -rw-r--r-- | fs/xfs/xfs_filestream.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/xfs/xfs_filestream.c b/fs/xfs/xfs_filestream.c index a2e86e8a0fea..8f9f854376c6 100644 --- a/fs/xfs/xfs_filestream.c +++ b/fs/xfs/xfs_filestream.c @@ -322,7 +322,7 @@ xfs_filestream_lookup_ag( pip = xfs_filestream_get_parent(ip); if (!pip) - goto out; + return NULLAGNUMBER; mru = xfs_mru_cache_lookup(mp->m_filestream, pip->i_ino); if (mru) { |