Message ID | 20190316200953.28881-1-edumazet@google.com |
---|---|
State | Accepted |
Delegated to: | David Miller |
Headers | show |
Series | [net] tun: add a missing rcu_read_unlock() in error path | expand |
From: Eric Dumazet <edumazet@google.com> Date: Sat, 16 Mar 2019 13:09:53 -0700 > In my latest patch I missed one rcu_read_unlock(), in case > device is down. > > Fixes: 4477138fa0ae ("tun: properly test for IFF_UP") > Signed-off-by: Eric Dumazet <edumazet@google.com> > Reported-by: syzbot <syzkaller@googlegroups.com> Applied, thanks Eric.
diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 0d343359f647ff58fee35462358827e61857c837..e9ca1c088d0b11611e4d80268ced3806db05cffb 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1960,6 +1960,7 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile, rcu_read_lock(); if (unlikely(!(tun->dev->flags & IFF_UP))) { err = -EIO; + rcu_read_unlock(); goto drop; }
In my latest patch I missed one rcu_read_unlock(), in case device is down. Fixes: 4477138fa0ae ("tun: properly test for IFF_UP") Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: syzbot <syzkaller@googlegroups.com> --- drivers/net/tun.c | 1 + 1 file changed, 1 insertion(+)