Messages in this thread Patch in this message | | | Date | Tue, 28 Jan 2003 12:34:13 -0800 (PST) | Subject | Re: [TEST FIX] Re: SSH Hangs in 2.5.59 and 2.5.55 but not 2.4.x, through Cisco PIX | From | "David S. Miller" <> |
| |
From: Sebastian Benoit <benoit-lists@fb12.de> Date: Tue, 28 Jan 2003 20:16:45 +0100
David S. Miller(davem@redhat.com)@2003.01.28 10:35:34 +0000: > Good set of debug checks would be the following: no output, i did 4 tests, everytime i was able to lock the ssh-connection within a few seconds. kernel 2.5.59 + your debug-patch.
Thanks for testing, how about this new patch at the end of this email? Does it make the problem go away?
Alexey, most solid report is that 2.5.43-bk1 makes bug appear. This is good because it sort of narrows things down. What is contained there in networking is:
1) initial stackable dst logic, should not cause problems 2) addition of UDP sendfile and ip_append_*() logic 3) fix to tcp_check_req() "fix" :-) it only changes bahevior on connect so should not be a problem
I heavily, therefore, suspect #2 which is why I am poking around in the tcp.c changes to change checksumming and copying semantics.
--- net/ipv4/tcp.c.~1~ Tue Jan 28 12:40:09 2003 +++ net/ipv4/tcp.c Tue Jan 28 12:41:48 2003 @@ -1089,11 +1089,13 @@ if (!skb) goto wait_for_memory; +#if 0 /* * Check whether we can use HW checksum. */ if (sk->route_caps & (NETIF_F_IP_CSUM|NETIF_F_NO_CSUM|NETIF_F_HW_CSUM)) skb->ip_summed = CHECKSUM_HW; +#endif skb_entail(sk, tp, skb); copy = mss_now; - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |