diff options
| author | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2011-03-25 19:09:54 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-04-14 16:53:29 -0700 |
| commit | 5cb4b8544380d9d776737418aedd871ff5403adb (patch) | |
| tree | cd6644209ce968d71ce50e62363db524cb4266c8 | |
| parent | b7236edfb8caffe3d9348999e13c972666e96b44 (diff) | |
| download | lwn-5cb4b8544380d9d776737418aedd871ff5403adb.tar.gz lwn-5cb4b8544380d9d776737418aedd871ff5403adb.zip | |
UBIFS: fix oops on error path in read_pnode
commit 54acbaaa523ca0bd284a18f67ad213c379679e86 upstream.
Thanks to coverity which spotted that UBIFS will oops if 'kmalloc()'
in 'read_pnode()' fails and we dereference a NULL 'pnode' pointer
when we 'goto out'.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | fs/ubifs/lpt.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/fs/ubifs/lpt.c b/fs/ubifs/lpt.c index b2792e84d245..d0dfe7a0dedf 100644 --- a/fs/ubifs/lpt.c +++ b/fs/ubifs/lpt.c @@ -1269,10 +1269,9 @@ static int read_pnode(struct ubifs_info *c, struct ubifs_nnode *parent, int iip) lnum = branch->lnum; offs = branch->offs; pnode = kzalloc(sizeof(struct ubifs_pnode), GFP_NOFS); - if (!pnode) { - err = -ENOMEM; - goto out; - } + if (!pnode) + return -ENOMEM; + if (lnum == 0) { /* * This pnode was not written which just means that the LEB |