fix sysfs_init_fs_context() in !CONFIG_NET_NS case



Permission checks on current's netns should be done only when
netns are enabled.

Reported-by: Dominik Brodowski <linux@dominikbrodowski.net>
Fixes: 23bf1b6b
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

parent c99c2171

fs/sysfs/mount.c

+5 −3

Original line number	Diff line number	Diff line
		@@ -71,9 +71,11 @@ static int sysfs_init_fs_context(struct fs_context *fc)
		kfc->magic = SYSFS_MAGIC;
		fc->fs_private = kfc;
		fc->ops = &sysfs_fs_context_ops;
		if (netns) {
		if (fc->user_ns)
		put_user_ns(fc->user_ns);
		fc->user_ns = get_user_ns(netns->user_ns);
		}
		fc->global = true;
		return 0;
		}