diff options
Diffstat (limited to 'fs/fcntl.c')
| -rw-r--r-- | fs/fcntl.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/fcntl.c b/fs/fcntl.c index ac77dd912412..49884fa3c81d 100644 --- a/fs/fcntl.c +++ b/fs/fcntl.c @@ -374,6 +374,9 @@ static long fcntl_set_rw_hint(struct file *file, unsigned int cmd, u64 __user *argp = (u64 __user *)arg; u64 hint; + if (!inode_owner_or_capable(file_mnt_idmap(file), inode)) + return -EPERM; + if (copy_from_user(&hint, argp, sizeof(hint))) return -EFAULT; if (!rw_hint_valid(hint)) |