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Re: [Xen-devel] Kernel bug from 3.0 (was phy disks and vifs timing out i

On 03/08/2011 16:28, Konrad Rzeszutek Wilk wrote:
> On Fri, Jul 29, 2011 at 08:53:02AM +0100, Anthony Wright wrote:
>> I've just upgraded to xen 4.1.1 with a stock 3.0 kernel on dom0 (with
>> the vga-support patch backported). I can't get my DomU's to work due to
>> the phy disks and vifs timing out in DomU and looking through my logs
>> this morning I'm getting a consistent kernel bug report with xen
>> mentioned at the top of the stack trace and vifdisconnect mentioned on
> Yikes! Ian any ideas what to try?
>
> Anthony, can you compile the kernel with debug=y and when this happens
> see what 'xl dmesg' gives? Also there is also the 'xl debug-keys g' which
> should dump the grants in use.. that might help a bit.
I've compiled a 3.0.1 kernel with CONFIG_DEBUG=Y (a number of other
config values appeared at this point, and I took defaults for them).

The output from /var/log/messages & 'xl dmesg' is attached. There was no
output from 'xl debug-keys g'.

I'm going to try 3.0.3 for monday.
>> 2011 Jul 29 07:18:50 kernel: [   33.213500] vif vif-1-0: vif1.0: failed to 
>> map tx ring. err=-12 status=-1                                               
>>   
>> 2011 Jul 29 07:18:50 kernel: [   33.213516] vif vif-1-0: 1 mapping 
>> shared-frames 768/769 port 12                                                
>>           
>> 2011 Jul 29 07:19:01 /usr/sbin/cron[3719]: (root) CMD (/usr/monitor/monitor) 
>>                                                                              
>> 2011 Jul 29 07:19:23 kernel: [   66.043164] vif vif-1-0: 2 reading script    
>>                                                                              
>> 2011 Jul 29 07:19:23 kernel: [   66.045984] br-internal: port 1(vif1.0) 
>> entering disabled state                                                      
>>      
>> 2011 Jul 29 07:19:23 kernel: [   66.046044] libfcoe_device_notification: 
>> NETDEV_UNREGISTER vif1.0                                                     
>>     
>> 2011 Jul 29 07:19:23 kernel: [   66.046082] br-internal: port 1(vif1.0) 
>> entering disabled state                                                      
>>      
>> 2011 Jul 29 07:19:23 kernel: [   66.046279] br-internal: mixed no 
>> checksumming and other settings.                                             
>>            
>> 2011 Jul 29 07:19:23 kernel: [   66.050077] ------------[ cut here 
>> ]------------                                                                
>>           
>> 2011 Jul 29 07:19:23 kernel: [   66.050858] kernel BUG at mm/vmalloc.c:2164! 
>>                                                                              
>> 2011 Jul 29 07:19:23 kernel: [   66.051034] invalid opcode: 0000 [#1] SMP    
>>                                                                              
>> 2011 Jul 29 07:19:23 kernel: [   66.051034] Modules linked in:               
>>                                                                              
>> 2011 Jul 29 07:19:23 kernel: [   66.051034]                                  
>>                                                                              
>> 2011 Jul 29 07:19:23 kernel: [   66.051034] Pid: 20, comm: xenwatch Not 
>> tainted 3.0.0 #1 MSI MS-7309/MS-7309                                         
>>      
>> 2011 Jul 29 07:19:23 kernel: [   66.051034] EIP: 0061:[<c0494bff>] EFLAGS: 
>> 00010207 CPU: 1                                                              
>>   
>> 2011 Jul 29 07:19:23 kernel: [   66.051034] EIP is at free_vm_area+0xf/0x19  
>>                                                                              
>> 2011 Jul 29 07:19:23 kernel: [   66.051034] EAX: 00000000 EBX: d0799700 ECX: 
>> 00000018 EDX: 00000000                                                       
>> 2011 Jul 29 07:19:23 kernel: [   66.051034] ESI: cf9e5800 EDI: d051a600 EBP: 
>> cf9e5c00 ESP: d0ce7eb4                                                       
>> 2011 Jul 29 07:19:23 kernel: [   66.051034]  DS: 007b ES: 007b FS: 00d8 GS: 
>> 0000 SS: 0069                                                                
>>  
>> 2011 Jul 29 07:19:23 kernel: [   66.051034] Process xenwatch (pid: 20, 
>> ti=d0ce6000 task=d0c55140 task.ti=d0ce6000)                                  
>>       
>> 2011 Jul 29 07:19:23 kernel: [   66.051034] Stack:                           
>>                                                                              
>> 2011 Jul 29 07:19:23 kernel: [   66.051034]  cf9e5c00 c09e87aa fffc6e23 
>> c0c4bd65 d0ce7ecc cf9e5844 d0ce7ecc d0ce7ecc                                 
>>      
>> 2011 Jul 29 07:19:23 kernel: [   66.051034]  cf9e5c00 cf9e5800 d051a600 
>> cf9e5c94 c09eace0 cffdbfe0 00000000 fffffffe
>> 2011 Jul 29 07:19:23 kernel: [   66.051034]  d0ce7f9c c061fe74 cffdbe60 
>> d051a620 d051a600 d0ce7f9c c09e9f8c d051a600
>> 2011 Jul 29 07:19:23 kernel: [   66.051034] Call Trace:
>> 2011 Jul 29 07:19:23 kernel: [   66.051034]  [<c09e87aa>] ? 
>> xen_netbk_unmap_frontend_rings+0xbf/0xd3
>> 2011 Jul 29 07:19:23 kernel: [   66.051034]  [<c0c4bd65>] ? 
>> netdev_run_todo+0x1b7/0x1cc
>> 2011 Jul 29 07:19:23 kernel: [   66.051034]  [<c09eace0>] ? 
>> xenvif_disconnect+0xd0/0xe4
>> 2011 Jul 29 07:19:23 kernel: [   66.051034]  [<c061fe74>] ? 
>> xenbus_rm+0x37/0x3e
>> 2011 Jul 29 07:19:23 kernel: [   66.051034]  [<c09e9f8c>] ? 
>> netback_remove+0x40/0x5d
>> 2011 Jul 29 07:19:23 kernel: [   66.051034]  [<c062075d>] ? 
>> xenbus_dev_remove+0x2c/0x3d
>> 2011 Jul 29 07:19:23 kernel: [   66.051034]  [<c06620e6>] ? 
>> __device_release_driver+0x42/0x79
>> 2011 Jul 29 07:19:23 kernel: [   66.051034]  [<c06621ac>] ? 
>> device_release_driver+0xf/0x17
>> 2011 Jul 29 07:19:23 kernel: [   66.051034]  [<c0661818>] ? 
>> bus_remove_device+0x75/0x84
>> 2011 Jul 29 07:19:23 kernel: [   66.051034]  [<c0660693>] ? 
>> device_del+0xe6/0x125
>> 2011 Jul 29 07:19:23 kernel: [   66.051034]  [<c06606da>] ? 
>> device_unregister+0x8/0x10
>> 2011 Jul 29 07:19:23 kernel: [   66.051034]  [<c06205f0>] ? 
>> xenbus_dev_changed+0x71/0x129
>> 2011 Jul 29 07:19:23 kernel: [   66.051034]  [<c0405394>] ? 
>> check_events+0x8/0xc
>> 2011 Jul 29 07:19:23 kernel: [   66.051034]  [<c061f711>] ? 
>> xenwatch_thread+0xeb/0x113
>> 2011 Jul 29 07:19:23 kernel: [   66.051034]  [<c044792c>] ? 
>> wake_up_bit+0x53/0x53
>> 2011 Jul 29 07:19:23 kernel: [   66.051034]  [<c061f626>] ? 
>> xenbus_thread+0x1cc/0x1cc
>> 2011 Jul 29 07:19:23 kernel: [   66.051034]  [<c0447616>] ? kthread+0x63/0x68
>> 2011 Jul 29 07:19:23 kernel: [   66.051034]  [<c04475b3>] ? 
>> kthread_worker_fn+0x122/0x122
>> 2011 Jul 29 07:19:23 kernel: [   66.051034]  [<c0e0f036>] ? 
>> kernel_thread_helper+0x6/0x10
>> 2011 Jul 29 07:19:23 kernel: [   66.051034] Code: c1 00 00 00 01 89 f0 e8 a1 
>> ff ff ff 81 6b 08 00 10 00 00 eb 02 31 db 89 d8 5b 5e c3 53 89 c3 8b 40 04 
>> e8 9b ff ff ff 39 d8 74 04 <0f> 0b eb fe 5b e9 73 95 00 00 57 89 d7 56 31 f6 
>> 53 89 c3 eb 09
>> 2011 Jul 29 07:19:23 kernel: [   66.051034] EIP: [<c0494bff>] 
>> free_vm_area+0xf/0x19 SS:ESP 0069:d0ce7eb4
>> 2011 Jul 29 07:19:23 kernel: [   66.051034] ---[ end trace b47a8d30fa29735c 
>> ]---
>> 2011 Jul 29 07:19:23 logger: /etc/xen/scripts/xen-hotplug-cleanup: 
>> XENBUS_PATH=backend/qdisk/1/51714
>> 2011 Jul 29 07:19:23 logger: /etc/xen/scripts/xen-hotplug-cleanup: 
>> XENBUS_PATH=backend/qdisk/1/51713

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Attachment: messages
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