linux-kernel - [145/156] tcp: Fix OOB POLLIN avoidance.

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Message-Id: <20100330224854.794391040@linux.site>
Date:	Tue, 30 Mar 2010 15:42:59 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	"David S. Miller" <davem@...emloft.net>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: [145/156] tcp: Fix OOB POLLIN avoidance.

2.6.33-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Alexandra Kossovsky <Alexandra.Kossovsky@...etlabs.ru>

[ Upstream commit b634f87522dff87712df8bda2a6c9061954d552a ]

From: Alexandra.Kossovsky@...etlabs.ru

Fixes kernel bugzilla #15541

Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 net/ipv4/tcp.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -429,7 +429,7 @@ unsigned int tcp_poll(struct file *file,
 		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


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