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| author | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2011-03-25 18:09:54 +0100 |
|---|---|---|
| committer | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2011-04-05 09:40:31 +0200 |
| commit | 54acbaaa523ca0bd284a18f67ad213c379679e86 (patch) | |
| tree | c6ed0d74270ef84bc605d71feaa09b0511ccece6 | |
| parent | UBIFS: do not read flash unnecessarily (diff) | |
| download | linux-54acbaaa523ca0bd284a18f67ad213c379679e86.tar.xz linux-54acbaaa523ca0bd284a18f67ad213c379679e86.zip | |
UBIFS: fix oops on error path in read_pnode
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>
Cc: stable@kernel.org
| -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 72775d35b99e..ef5155e109a2 100644 --- a/fs/ubifs/lpt.c +++ b/fs/ubifs/lpt.c @@ -1270,10 +1270,9 @@ 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 |