[PATCH 4.14 62/88] kernfs: deal with kernfs_fill_super() failures

Sasha Levin
2021-06-28T15:13:16Z

From: Al Viro <viro@zeniv.linux.org.uk>

commit 82382acec0c97b91830fff7130d0acce4ac4f3f3 upstream.

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>
Signed-off-by: Guilherme G. Piccoli <gpiccoli@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/kernfs/mount.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/fs/kernfs/mount.c b/fs/kernfs/mount.c
index 5019058e0f6a..610267585f8f 100644
--- a/fs/kernfs/mount.c
+++ b/fs/kernfs/mount.c
@@ -320,6 +320,7 @@ 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);
--
2.30.2