Re: 2.4.0-ac3 write() to tcp socket returning errno of -3 (ESRCH:

[David S. Miller]

   Date: Thu, 11 Jan 2001 10:45:13 -0600 (CST)
   From: Paul Cassella <[e-mail]>

   I'm not familiar enough with the tcp code to know if this patch
   (against -ac6) is a solution, band-aid, or, in fact, wrong, but
   I've run with it (on -ac3) and haven't seen the errors for over
   twelve hours, which is three times longer than it had been able to
   go without it coming up.

See the fix I put in 2.4.1-pre2, which is:

diff -u --recursive --new-file v2.4.0/linux/net/ipv4/tcp.c linux/net/ipv4/tcp.c
--- v2.4.0/linux/net/ipv4/tcp.c	Tue Nov 28 21:53:45 2000
+++ linux/net/ipv4/tcp.c	Wed Jan 10 14:12:12 2001
@@ -954,7 +954,7 @@
 			 */
 			skb = sk->write_queue.prev;
 			if (tp->send_head &&
-			    (mss_now - skb->len) > 0) {
+			    (mss_now > skb->len)) {
 				copy = skb->len;
 				if (skb_tailroom(skb) > 0) {
 					int last_byte_was_odd = (copy % 4);