From b634f87522dff87712df8bda2a6c9061954d552a Mon Sep 17 00:00:00 2001 From: Alexandra Kossovsky Date: Thu, 18 Mar 2010 20:29:24 -0700 Subject: [PATCH] tcp: Fix OOB POLLIN avoidance. From: Alexandra.Kossovsky@oktetlabs.ru Fixes kernel bugzilla #15541 Signed-off-by: David S. Miller --- net/ipv4/tcp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 5901010fad55..ae16f809e716 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -429,7 +429,7 @@ unsigned int tcp_poll(struct file *file, struct socket *sock, poll_table *wait) if (tp->urg_seq == tp->copied_seq && !sock_flag(sk, SOCK_URGINLINE) && tp->urg_data) - target--; + target++; /* Potential race condition. If read of tp below will * escape above sk->sk_state, we can be illegally awaken -- 2.20.1