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| author | Russell Cattelan <cattelan@redhat.com> | 2007-01-09 00:47:51 +0100 |
|---|---|---|
| committer | Steven Whitehouse <swhiteho@redhat.com> | 2007-02-05 19:36:28 +0100 |
| commit | 6c93fd1e578669364e026a0d44c669b871e2a8c4 (patch) | |
| tree | 282fd8a70fd4791a80a06dbddac1060cbc4f3848 /fs/gfs2 | |
| parent | [GFS2] Fix ordering of page disposal vs. glock_dq (diff) | |
| download | linux-6c93fd1e578669364e026a0d44c669b871e2a8c4.tar.xz linux-6c93fd1e578669364e026a0d44c669b871e2a8c4.zip | |
[GFS2] BZ 217008 fsfuzzer fix.
Update the quilt header comments to match the
code changes.
Change gfs2_lookup_simple to return an error in the case
of a NULL inode.
The callers of gfs2_lookup_simple do not check for NULL
in the no entry case and such would end up dereferencing a NULL ptr.
This fixes:
http://projects.info-pull.com/mokb/MOKB-15-11-2006.html
Signed-off-by: Russell Cattelan <cattelan@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2')
| -rw-r--r-- | fs/gfs2/inode.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 6bc443644c3c..bab338f6b610 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -361,8 +361,18 @@ out: struct inode *gfs2_lookup_simple(struct inode *dip, const char *name) { struct qstr qstr; + struct inode *inode; gfs2_str2qstr(&qstr, name); - return gfs2_lookupi(dip, &qstr, 1, NULL); + inode = gfs2_lookupi(dip, &qstr, 1, NULL); + /* gfs2_lookupi has inconsistent callers: vfs + * related routines expect NULL for no entry found, + * gfs2_lookup_simple callers expect ENOENT + * and do not check for NULL. + */ + if (inode == NULL) + return ERR_PTR(-ENOENT); + else + return inode; } |