[Xen-users] xen kernel errors

[John McMonagle <johnm@xxxxxxxxxxx>]

Have a new amd 6100 based server.
http://www.supermicro.com/Aplus/system/2U/2022/AS-2022G-URF.cfm

I'm seeing 2 errors.
during boot get this:

[    0.004823] ------------[ cut here ]------------
[    0.004833] WARNING: 
at 
/build/buildd-linux-2.6_2.6.32-35-amd64-aZSlKL/linux-2.6-2.6.32/debian/build/source_amd64_xen/arch/x86/xen/enlighten.c:726
 
init_hw_perf_events+0x32d/0x3cd()
[    0.004838] Hardware name: H8DGU
[    0.004841] Modules linked in:
[    0.004847] Pid: 0, comm: swapper Not tainted 2.6.32-5-xen-amd64 #1
[    0.004850] Call Trace:
[    0.004857]  [<ffffffff81510efc>] ? init_hw_perf_events+0x32d/0x3cd
[    0.004862]  [<ffffffff81510efc>] ? init_hw_perf_events+0x32d/0x3cd
[    0.004870]  [<ffffffff8104ef00>] ? warn_slowpath_common+0x77/0xa3
[    0.004875]  [<ffffffff81510efc>] ? init_hw_perf_events+0x32d/0x3cd
[    0.004881]  [<ffffffff813044dc>] ? identify_cpu+0x2f7/0x300
[    0.004888]  [<ffffffff8100eccf>] ? xen_restore_fl_direct_end+0x0/0x1
[    0.004895]  [<ffffffff810e81d5>] ? kmem_cache_alloc+0x8c/0xf0
[    0.004900]  [<ffffffff81510a16>] ? identify_boot_cpu+0x15/0x3e
[    0.004904]  [<ffffffff81510baa>] ? check_bugs+0x9/0x2e
[    0.004910]  [<ffffffff81509cce>] ? start_kernel+0x3cd/0x3e8
[    0.004915]  [<ffffffff8150bc93>] ? xen_start_kernel+0x586/0x58a
[    0.004926] ---[ end trace a7919e7f17c0a725 ]---
[    0.004930] ... version:                0
[    0.004932] ... bit width:              48
[    0.004935] ... generic registers:      4
[    0.004938] ... value mask:             0000ffffffffffff
[    0.004940] ... max period:             00007fffffffffff
[    0.004943] ... fixed-purpose events:   0
[    0.004946] ... event mask:             000000000000000f
 
Have not noticed any particular problems.
What is it?
What can be done?

Then next one may not be xen but I only had the problem after running a domu.
After a while I get kernel error and networking stops.
This is the error:
[ 1411.813376] ------------[ cut here ]------------
[ 1411.813398] WARNING: 
at 
/build/buildd-linux-2.6_2.6.32-35-amd64-aZSlKL/linux-2.6-2.6.32/debian/build/source_amd64_xen/net/sched/s
ch_generic.c:261 dev_watchdog+0xe2/0x194()
[ 1411.813410] Hardware name: H8DGU
[ 1411.813417] NETDEV WATCHDOG: peth0 (igb): transmit queue 1 timed out
[ 1411.813424] Modules linked in: xt_physdev iptable_filter tun ip_tables 
x_tables bridge stp sg sr_mod cdrom xfs exportfs ipmi_si i
pmi_devintf ipmi_watchdog ipmi_msghandler xen_evtchn blktap xenfs loop snd_pcm 
snd_timer snd soundcore snd_page_alloc pcspkr psmouse joydev evdev serio_raw 
i2c_piix
4 edac_core k10temp edac_mce_amd i2c_core processor button acpi_processor ext4 
mbcache jbd2 crc16 usbhid hid dm_mod raid1 md_mod sd_mod crc_t10dif 
ata_generic usb_s
torage pata_atiixp ahci ohci_hcd libata ehci_hcd usbcore nls_base scsi_mod igb 
dca thermal thermal_sys [last unloaded: scsi_wait_scan]
 [ 1411.813656] Pid: 4, comm: ksoftirqd/0 Tainted: G        W  
2.6.32-5-xen-amd64 #1
[ 1411.813664] Call Trace:
[ 1411.813671]  <IRQ>  [<ffffffff81272e42>] ? dev_watchdog+0xe2/0x194
[ 1411.813697]  [<ffffffff81272e42>] ? dev_watchdog+0xe2/0x194
[ 1411.813711]  [<ffffffff8104ef00>] ? warn_slowpath_common+0x77/0xa3
[ 1411.813724]  [<ffffffff81272d60>] ? dev_watchdog+0x0/0x194
[ 1411.813736]  [<ffffffff8104ef88>] ? warn_slowpath_fmt+0x51/0x59
[ 1411.813751]  [<ffffffff8130d42a>] ? _spin_unlock_irqrestore+0xd/0xe
[ 1411.813762]  [<ffffffff8104b41e>] ? try_to_wake_up+0x289/0x29b
[ 1411.813778]  [<ffffffff81272d34>] ? netif_tx_lock+0x3d/0x69
[ 1411.813791]  [<ffffffff8125d7da>] ? netdev_drivername+0x3b/0x40
[ 1411.813803]  [<ffffffff81272e42>] ? dev_watchdog+0xe2/0x194
[ 1411.813816]  [<ffffffff8100ece2>] ? check_events+0x12/0x20
[ 1411.813827]  [<ffffffff81040e42>] ? check_preempt_wakeup+0x0/0x268
[ 1411.813841]  [<ffffffff8105b5ef>] ? run_timer_softirq+0x1c9/0x268
[ 1411.813855]  [<ffffffff81054c9b>] ? __do_softirq+0xdd/0x1a6
[ 1411.813867]  [<ffffffff81012cac>] ? call_softirq+0x1c/0x30
[ 1411.813873]  <EOI>  [<ffffffff8101422b>] ? do_softirq+0x3f/0x7c
[ 1411.813893]  [<ffffffff810548c2>] ? ksoftirqd+0x5f/0xd3
[ 1411.813905]  [<ffffffff81054863>] ? ksoftirqd+0x0/0xd3
[ 1411.813915]  [<ffffffff81065c39>] ? kthread+0x79/0x81
[ 1411.813926]  [<ffffffff81012baa>] ? child_rip+0xa/0x20
[ 1411.813937]  [<ffffffff81011d61>] ? int_ret_from_sys_call+0x7/0x1b
[ 1411.813948]  [<ffffffff8101251d>] ? retint_restore_args+0x5/0x6
[ 1411.813958]  [<ffffffff81012ba0>] ? child_rip+0x0/0x20
[ 1411.813966] ---[ end trace a7919e7f17c0a727 ]---
[ 1412.052253] eth0: port 1(peth0) entering disabled state
[ 1635.796207] frontend_changed: backend/vbd/3/768: prepare for reconnect
[ 1647.137513] eth0: port 3(vif3.0) entering disabled state
[ 1647.157527] eth0: port 3(vif3.0) entering disabled state
 Kernel logging (proc) stopped.

In this case dom0 locked up. Some times just networking stops and some times 
networking recovers.

I downloaded  new igb driver source from Intel and installed it.
It's running OK so far but it has not been long enough to tell. 

Any ideas?

John

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