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kernfs: deal with kernfs_fill_super() failures 

commit 82382acec0 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>
This commit is contained in:
Al Viro 2018-04-03 00:22:29 -04:00 committed by Sasha Levin
parent 58b5e02c6c
commit e83ca3bdb8
1 changed files with 1 additions and 0 deletions
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fs/kernfs/mount.c
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@ -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);