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Commit b634f875 authored Mar 18, 2010 by Alexandra Kossovsky Committed by David S. Miller Mar 18, 2010

tcp: Fix OOB POLLIN avoidance.



From: Alexandra.Kossovsky@oktetlabs.ru

Fixes kernel bugzilla #15541

Signed-off-by: David S. Miller <davem@davemloft.net>

parent 22001a13

net/ipv4/tcp.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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