kernfs: deal with kernfs_fill_super() failures

make sure that info->node is initialized early, so that kernfs_kill_sb()
can list_del() it safely.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/kernfs/mount.c b/fs/kernfs/mount.c
index 26dd9a5..ff2716f 100644 (file)
--- a/fs/kernfs/mount.c
+++ b/fs/kernfs/mount.c
@@ -316,6 +316,7 @@ struct dentry *kernfs_mount_ns(struct file_system_type *fs_type, int flags,
 
        info->root = root;
        info->ns = ns;
+       INIT_LIST_HEAD(&info->node);
 
        sb = sget_userns(fs_type, kernfs_test_super, kernfs_set_super, flags,
                         &init_user_ns, info);