Re: [Xen-users] Xen 3.1 clock problems

[Tony Hoyle <tmh@xxxxxxxxxxxx>]

Petersson, Mats wrote:
> Sorry for not being more help here... 
I've found on the domu I last rebooted it has a large number of the following:

May 30 01:43:42 wolf359 kernel: BUG: soft lockup detected on CPU#1!
May 30 01:43:42 wolf359 kernel:
May 30 01:43:42 wolf359 kernel: Call Trace:
May 30 01:43:42 wolf359 kernel:  <IRQ>  [<ffffffff8029ea86>] 
softlockup_tick+0xdb/0xed
May 30 01:43:42 wolf359 kernel:  [<ffffffff8027d9ae>] 
run_rebalance_domains+0x14a/0x3a7
May 30 01:43:42 wolf359 kernel:  [<ffffffff802663f5>] 
timer_interrupt+0x39c/0x3fa
May 30 01:43:42 wolf359 kernel:  [<ffffffff8021129c>] handle_IRQ_event+0x29/0x5b
May 30 01:43:42 wolf359 kernel:  [<ffffffff802a02ee>] 
handle_level_irq+0xae/0x100
May 30 01:43:42 wolf359 kernel:  [<ffffffff8025b21c>] call_softirq+0x1c/0x28
May 30 01:43:42 wolf359 kernel:  [<ffffffff80264c8b>] do_IRQ+0x64/0xcd
May 30 01:43:42 wolf359 kernel:  [<ffffffff803646f0>] evtchn_do_upcall+0x86/0xe0
May 30 01:43:42 wolf359 kernel:  [<ffffffff8025acfe>] 
do_hypervisor_callback+0x1e/0x30
May 30 01:43:42 wolf359 kernel:  <EOI>  [<ffffffff802063aa>] 
hypercall_page+0x3aa/0x1000
May 30 01:43:42 wolf359 kernel:  [<ffffffff802063aa>] 
hypercall_page+0x3aa/0x1000
May 30 01:43:42 wolf359 kernel:  [<ffffffff80265912>] raw_safe_halt+0x7f/0xa3
May 30 01:43:42 wolf359 kernel:  [<ffffffff80262c10>] xen_idle+0x34/0x4d
May 30 01:43:42 wolf359 kernel:  [<ffffffff80247858>] cpu_idle+0x89/0xac
May 30 01:43:42 wolf359 kernel:

Since rebooting this hasn't repeated and the time is back to normal.

The first one of these is possibly the source of the problem:

May 29 19:13:39 wolf359 dhclient: DHCPREQUEST on eth0 to 81.187.26.102 port 67
May 29 19:13:39 wolf359 dhclient: DHCPACK from 81.187.26.102
May 29 19:13:40 wolf359 dhclient: bound to 192.168.44.12 -- renewal in 300 
seconds.
May 29 19:14:31 wolf359 kernel: Breaking affinity for irq 260
May 29 19:14:31 wolf359 kernel: Breaking affinity for irq 261
May 29 19:14:31 wolf359 kernel: Breaking affinity for irq 262
May 29 16:53:23 wolf359 kernel: netfront: device eth0 has flipping receive path.
May 29 16:53:23 wolf359 kernel: netfront: device eth0 has flipping receive path.
May 29 16:53:23 wolf359 kernel: Initializing CPU#1
May 29 17:02:34 wolf359 kernel: BUG: soft lockup detected on CPU#1!
May 29 17:02:34 wolf359 kernel:
May 29 17:02:34 wolf359 kernel: Call Trace:
May 29 17:02:34 wolf359 kernel:  <IRQ>  [<ffffffff8029ea86>] 
softlockup_tick+0xdb/0xed
May 29 17:02:34 wolf359 kernel:  [<ffffffff8027d9ae>] 
run_rebalance_domains+0x14a/0x3a7
May 29 17:02:34 wolf359 kernel:  [<ffffffff802663f5>] 
timer_interrupt+0x39c/0x3fa
May 29 17:02:34 wolf359 kernel:  [<ffffffff8021129c>] handle_IRQ_event+0x29/0x5b
May 29 17:02:34 wolf359 kernel:  [<ffffffff802a02ee>] 
handle_level_irq+0xae/0x100
May 29 17:02:34 wolf359 kernel:  [<ffffffff8025b21c>] call_softirq+0x1c/0x28
May 29 17:02:34 wolf359 kernel:  [<ffffffff80264c8b>] do_IRQ+0x64/0xcd
May 29 17:02:34 wolf359 kernel:  [<ffffffff8025af6f>] child_rip+0x11/0x12
May 29 17:02:34 wolf359 kernel:  [<ffffffff803646f0>] evtchn_do_upcall+0x86/0xe0
May 29 17:02:34 wolf359 kernel:  [<ffffffff8025acfe>] 
do_hypervisor_callback+0x1e/0x30
May 29 17:02:34 wolf359 kernel:  <EOI>  [<ffffffff802063aa>] 
hypercall_page+0x3aa/0x1000
May 29 17:02:34 wolf359 kernel:  [<ffffffff802063aa>] 
hypercall_page+0x3aa/0x1000
May 29 17:02:34 wolf359 kernel:  [<ffffffff80265912>] raw_safe_halt+0x7f/0xa3
May 29 17:02:34 wolf359 kernel:  [<ffffffff80262c10>] xen_idle+0x34/0x4d
May 29 17:02:34 wolf359 kernel:  [<ffffffff80247858>] cpu_idle+0x89/0xac
May 29 17:02:34 wolf359 kernel:
May 29 17:17:01 wolf359 /USR/SBIN/CRON[2038]: (root) CMD (   cd / && run-parts 
--report /etc/cron.hourly)
May 29 17:17:01 wolf359 kernel: BUG: soft lockup detected on CPU#1!

Tony

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