| From | Ben Hutchings <> | Date | Sun, 03 Feb 2019 14:45:08 +0100 | Subject | [PATCH 3.16 078/305] gfs2_meta: ->mount() can get NULL dev_name |
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3.16.63-rc1 review patch. If anyone has any objections, please let me know.
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From: Al Viro <viro@zeniv.linux.org.uk>
commit 3df629d873f8683af6f0d34dfc743f637966d483 upstream.
get in sync with mount_bdev() handling of the same
Reported-by: syzbot+c54f8e94e6bba03b04e9@syzkaller.appspotmail.com Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- fs/gfs2/ops_fstype.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -1365,6 +1365,9 @@ static struct dentry *gfs2_mount_meta(st struct path path; int error; + if (!dev_name || !*dev_name) + return ERR_PTR(-EINVAL); + error = kern_path(dev_name, LOOKUP_FOLLOW, &path); if (error) { pr_warn("path_lookup on %s returned error %d\n",
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