[B][PATCH 1/2] kernfs: deal with kernfs_fill_super() failures

[Guilherme G. Piccoli]

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

BugLink: https://bugs.launchpad.net/bugs/1934175

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

Signed-off-by: Al Viro <viro at zeniv.linux.org.uk>
(cherry picked from commit 82382acec0c97b91830fff7130d0acce4ac4f3f3)
Signed-off-by: Guilherme G. Piccoli <gpiccoli at canonical.com>
---
 fs/kernfs/mount.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/kernfs/mount.c b/fs/kernfs/mount.c
index 23ddba589552..0b22c39dad47 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);
-- 
2.31.1