diff options
| -rw-r--r-- | drivers/net/tun.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c index ce5af2a..4c0c597 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -782,18 +782,21 @@ static int tun_chr_fasync(int fd, struct file *file, int on) DBG(KERN_INFO "%s: tun_chr_fasync %d\n", tun->dev->name, on); + lock_kernel(); if ((ret = fasync_helper(fd, file, on, &tun->fasync)) < 0) - return ret; + goto out; if (on) { ret = __f_setown(file, task_pid(current), PIDTYPE_PID, 0); if (ret) - return ret; + goto out; tun->flags |= TUN_FASYNC; } else tun->flags &= ~TUN_FASYNC; - - return 0; + ret = 0; +out: + unlock_kernel(); + return ret; } static int tun_chr_open(struct inode *inode, struct file * file) |