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Commit 97c1df3e authored by Eric W. Biederman's avatar Eric W. Biederman
Browse files

mnt: If fs_fully_visible fails call put_filesystem. 



Add this trivial missing error handling.

Cc: stable@vger.kernel.org
Fixes: 1b852bce ("mnt: Refactor the logic for mounting sysfs and proc in a user namespace")
Signed-off-by: default avatar"Eric W. Biederman" <ebiederm@xmission.com>
parent af8c34ce

fs/namespace.c

+3 −1
Original line number Diff line number Diff line
@@ -2409,10 +2409,12 @@ 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) &&