Re: ip_conntrack locks up hard on 2.4.0 after about 10 hours

[David S. Miller]

   Date: 	Sat, 06 Jan 2001 10:37:54 -0500
   From: safemode <[e-mail]>

   Jan  6 06:18:10 icebox kernel: reset_xmit_timer sk=c17fd040 1
   when=0x5d9e, caller=c01a6bf1

I posted a fix for this on Linux-kernel yesterday, had you tested it
you would have seen at least this part of your problem report go away.
I'm reposting the fix for your convenience:

--- net/ipv4/tcp_input.c.~1~	Wed Dec 13 10:31:48 2000
+++ net/ipv4/tcp_input.c	Fri Jan  5 17:01:53 2001
@@ -1705,7 +1705,7 @@
 
 		if ((__s32)when < (__s32)tp->rttvar)
 			when = tp->rttvar;
-		tcp_reset_xmit_timer(sk, TCP_TIME_RETRANS, when);
+		tcp_reset_xmit_timer(sk, TCP_TIME_RETRANS, min(when, TCP_RTO_MAX));
 	}
 }