* multi-machine simultaneous kernel panic in tcp_transmit_kcb
@ 2010-10-28 1:04 Doug Hughes
2010-10-28 20:42 ` Ben Hutchings
0 siblings, 1 reply; 2+ messages in thread
From: Doug Hughes @ 2010-10-28 1:04 UTC (permalink / raw)
To: netdev
3 machines within 1 minute of each other (odd, by itself, but not the
root of the question).
2 of this:
2.6.18-164.15.1.el5 #1 SMP Wed Mar 17 11:30:06 EDT 2010 x86_64 x86_64
x86_64 GNU/Linux
(I have a screen shot on the kvm)
all Cent 5.4
1 Xen instances with 2.6.18-128.1.14.el5xen #1 SMP Wed Jun 17 07:10:16
EDT 2009 x86_64 x86_64 x86_64 GNU/Linux
a slightly older kernel but crashed within one minute of the other two.
Since it's a xen, I have a text traceback:
Pid: 0, comm: swapper Not tainted 2.6.18-128.1.14.el5xen #1
RIP: e030:[<ffffffff8040e077>] [<ffffffff8040e077>] pskb_copy+0x133/0x1b1
RSP: e02b:ffffffff8066ade0 EFLAGS: 00010282
RAX: ffff8800325fa120 RBX: ffff8800434f5780 RCX: ffff88006d311930
RDX: 656363612f647074 RSI: ffff8800325fa130 RDI: 0000000000000002
RBP: ffff8800549aa680 R08: 7ffffffffffffffe R09: 0000000000000000
R10: ffff8800434f5780 R11: 00000000000000c8 R12: 0000000000000220
R13: ffff8800549aa680 R14: 0000000000000000 R15: ffffffffff578000
FS: 00002b84514af260(0000) GS:ffffffff805ba000(0000) knlGS:0000000000000000
CS: e033 DS: 0000 ES: 0000
Process swapper (pid: 0, threadinfo ffffffff8062a000, task ffffffff804e0a80)
Stack: ffffffff802886d9 ffff88006ad3d280 0000000000000001 ffffffff80222485
ffff880025665380 000000017d0f80ab 0000000000000001 ffff88006ad3d280
ffff8800549aa680 00000000ffffff8f
Call Trace:
<IRQ> [<ffffffff802886d9>] rebalance_tick+0x18b/0x3d4
[<ffffffff80222485>] tcp_transmit_skb+0x73/0x667
[<ffffffff8043903a>] tcp_retransmit_skb+0x53d/0x638
[<ffffffff8043a569>] tcp_write_timer+0x0/0x68e
[<ffffffff8043a9d6>] tcp_write_timer+0x46d/0x68e
[<ffffffff80291f8b>] run_timer_softirq+0x13f/0x1c6
[<ffffffff802130d6>] __do_softirq+0x8d/0x13b
[<ffffffff80260da4>] call_softirq+0x1c/0x278
[<ffffffff8026e0be>] do_softirq+0x31/0x98
[<ffffffff8026df39>] do_IRQ+0xec/0xf5
[<ffffffff803a7b94>] evtchn_do_upcall+0x13b/0x1fb
[<ffffffff802608d6>] do_hypervisor_callback+0x1e/0x2c
<EOI> [<ffffffff802063aa>] hypercall_page+0x3aa/0x1000
[<ffffffff802063aa>] hypercall_page+0x3aa/0x1000
[<ffffffff8026f511>] raw_safe_halt+0x84/0xa8
[<ffffffff8026ca52>] xen_idle+0x38/0x4a
[<ffffffff8024b0d8>] cpu_idle+0x97/0xba
[<ffffffff80634b09>] start_kernel+0x21f/0x224
[<ffffffff806341e5>] _sinittext+0x1e5/0x1eb
Code: 48 8b 02 25 00 40 02 00 48 3d 00 40 02 00 75 04 48 8b 52 10
RIP [<ffffffff8040e077>] pskb_copy+0x133/0x1b1
RSP <ffffffff8066ade0>
<0>Kernel panic - not syncing: Fatal exception
---
The first 4 lines of the trace on the xen and the non-xen are the same
except for the addresses.
In fact, they are the same up until the 9th line where they start to
diverge a little bit.
The last thing in the kern log before the crash on one was an nfs server
not responding, but those happen sporadically and often enough that I
don't suspect it's related.
Given that its looks, seemed like an appropriate question for netdev
(following a failed google search)
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: multi-machine simultaneous kernel panic in tcp_transmit_kcb
2010-10-28 1:04 multi-machine simultaneous kernel panic in tcp_transmit_kcb Doug Hughes
@ 2010-10-28 20:42 ` Ben Hutchings
0 siblings, 0 replies; 2+ messages in thread
From: Ben Hutchings @ 2010-10-28 20:42 UTC (permalink / raw)
To: Doug Hughes; +Cc: netdev
Doug Hughes wrote:
> 3 machines within 1 minute of each other (odd, by itself, but not the
> root of the question).
>
> 2 of this:
> 2.6.18-164.15.1.el5 #1 SMP Wed Mar 17 11:30:06 EDT 2010 x86_64 x86_64
> x86_64 GNU/Linux
> (I have a screen shot on the kvm)
> all Cent 5.4
[...]
Please don't ask netdev to support an old distribution kernel. Try
asking on CentOS support forums or buy support from Red Hat.
Ben.
--
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.
^ permalink raw reply [flat|nested] 2+ messages in thread
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