Commit 7fca8723 authored Jun 06, 2016 by Eric W. Biederman Committed by Sasha Levin Jun 19, 2016

mnt: If fs_fully_visible fails call put_filesystem.



[ Upstream commit 97c1df3e54e811aed484a036a798b4b25d002ecf ]

Add this trivial missing error handling.

Cc: stable@vger.kernel.org
Fixes: 1b852bceb0d1 ("mnt: Refactor the logic for mounting sysfs and proc in a user namespace")
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

parent ec5ef4f8

fs/namespace.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -2331,10 +2331,12 @@ static int do_new_mount(struct path path, const char fstype, int flags,
		mnt_flags \|= MNT_NODEV \| MNT_LOCK_NODEV;
		}
		if (type->fs_flags & FS_USERNS_VISIBLE) {
		if (!fs_fully_visible(type, &mnt_flags))
		if (!fs_fully_visible(type, &mnt_flags)) {
		put_filesystem(type);
		return -EPERM;
		}
		}
		}

		mnt = vfs_kern_mount(type, flags, name, data);
		if (!IS_ERR(mnt) && (type->fs_flags & FS_HAS_SUBTYPE) &&