diff options
| -rw-r--r-- | fs/namespace.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index d67c2f61b3df..71ae1e9a1266 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -4498,6 +4498,10 @@ SYSCALL_DEFINE3(fsmount, int, fs_fd, unsigned int, flags, new_mnt = vfs_create_mount(fc); if (IS_ERR(new_mnt)) return PTR_ERR(new_mnt); + if (new_mnt->mnt_sb->s_flags & SB_NOUSER) { + mntput(new_mnt); + return -EINVAL; + } new_mnt->mnt_flags = mnt_flags; new_path.dentry = dget(fc->root); |