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| author | Hirofumi Nakagawa <nklabs@gmail.com> | 2017-09-25 21:09:53 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-11-02 11:54:46 +0300 |
| commit | d22011059462aa003e5825a8180f12db9a980e0c (patch) | |
| tree | c7c691637eeafe45e57849a093938a74f5bf9c87 | |
| parent | 176fab4e08a7a578ff6967a8658fd7429faed58f (diff) | |
| download | linux-d22011059462aa003e5825a8180f12db9a980e0c.tar.xz | |
ovl: add NULL check in ovl_alloc_inode
commit b3885bd6edb41b91a0e3976469f72ae31bfb8d95 upstream.
This was detected by fault injection test
Signed-off-by: Hirofumi Nakagawa <nklabs@gmail.com>
Fixes: 13cf199d0088 ("ovl: allocate an ovl_inode struct")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/overlayfs/super.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index a1464905c1ea..e2192e1eb564 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -174,6 +174,9 @@ static struct inode *ovl_alloc_inode(struct super_block *sb) { struct ovl_inode *oi = kmem_cache_alloc(ovl_inode_cachep, GFP_KERNEL); + if (!oi) + return NULL; + oi->cache = NULL; oi->redirect = NULL; oi->version = 0; |