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authorAmir Goldstein <amir73il@gmail.com>2017-07-11 15:58:35 +0300
committerMiklos Szeredi <mszeredi@redhat.com>2017-07-13 22:06:45 +0200
commit8fc646b44385ff0a9853f6590497e43049eeb311 (patch)
tree80b44e698a2fc19de2ba6d59c0fb9fcdd5b416c5 /fs/overlayfs
parentf4439de118283159ff165e52036134a278ebf990 (diff)
downloadlinux-8fc646b44385ff0a9853f6590497e43049eeb311.tar.bz2
ovl: fix random return value on mount
On failure to prepare_creds(), mount fails with a random return value, as err was last set to an integer cast of a valid lower mnt pointer or set to 0 if inodes index feature is enabled. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Fixes: 3fe6e52f0626 ("ovl: override creds with the ones from ...") Cc: <stable@vger.kernel.org> # v4.7 Signed-off-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/overlayfs')
-rw-r--r--fs/overlayfs/super.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
index 44dc2d6ffe0f..1cf5d3538309 100644
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -1090,6 +1090,7 @@ static int ovl_fill_super(struct super_block *sb, void *data, int silent)
else
sb->s_d_op = &ovl_dentry_operations;
+ err = -ENOMEM;
ufs->creator_cred = cred = prepare_creds();
if (!cred)
goto out_put_indexdir;