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[Xen-users] Xend is crashing after few hours/days.

To: xen-users <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-users] Xend is crashing after few hours/days.
From: xensource@xxxxxxxxxx
Date: Thu, 20 Aug 2009 18:19:09 +0200 (CEST)
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Hi,

I have troubles with xend crashing : (xen 3.4.1 - Kernel 2.6.31-rc3).
Xend is working perfectly for some hours, then crashes. No logs, except in the dmesg :

How can check what's wrong ?

Regards,

Here is the dmesg log :
 
[68386.101572] INFO: task xend:19865 blocked for more than 120 seconds.                                                                                                            
[68386.101670] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.                                                                                           
[68386.101833] xend          D ffff8804e9cbdec0     0 19865  19862 0x00000000                                                                                                      
[68386.101840]  ffff8804e9cbdd48 0000000000000282 0000000000000000 ffffffff8103227e                                                                                                
[68386.101849]  ffff8804e9cbdcd8 ffffffff00033f56 ffffffff8100f8ed ffff8804ec618038                                                                                                
[68386.101857]  0000000000013c00 000000000000de88 ffff8804e89cc350 ffff8804ec49c350                                                                                                
[68386.101866] Call Trace:                                                                                                                                                         
[68386.101876]  [<ffffffff8103227e>] ? pvclock_clocksource_read+0x4e/0x90                                                                                                          
[68386.101882]  [<ffffffff8100f8ed>] ? xen_force_evtchn_callback+0xd/0x10                                                                                                          
[68386.101887]  [<ffffffff8103227e>] ? pvclock_clocksource_read+0x4e/0x90                                                                                                          
[68386.101894]  [<ffffffff8143d45d>] schedule_timeout+0x18d/0x220                                                                                                                  
[68386.101899]  [<ffffffff810100b2>] ? check_events+0x12/0x20                                                                                                                      
[68386.101903]  [<ffffffff8100feb1>] ? xen_clocksource_read+0x21/0x30                                                                                                              
[68386.101908]  [<ffffffff81010fa6>] ? xen_spin_lock+0xa6/0x110                                                                                                                    
[68386.101913]  [<ffffffff8101009f>] ? xen_restore_fl_direct_end+0x0/0x1                                                                                                           
[68386.101918]  [<ffffffff8143c50c>] wait_for_common+0x15c/0x1a0                                                                                                                   
[68386.101923]  [<ffffffff8104d840>] ? default_wake_function+0x0/0x10                                                                                                              
[68386.101928]  [<ffffffff8143c5e8>] wait_for_completion+0x18/0x20                                                                                                                 
[68386.101933]  [<ffffffff8106bbf3>] flush_work+0x73/0xc0                                                                                                                          
[68386.101938]  [<ffffffff8106bc40>] ? wq_barrier_func+0x0/0x10                                                                                                                    
[68386.101944]  [<ffffffff810c9f10>] ? lru_add_drain_per_cpu+0x0/0x10                                                                                                              
[68386.101948]  [<ffffffff8106c583>] schedule_on_each_cpu+0xc3/0x100                                                                                                               
[68386.101953]  [<ffffffff810c9590>] lru_add_drain_all+0x10/0x20                                                                                                                   
[68386.101959]  [<ffffffff810def75>] sys_mlock+0x45/0x110                                                                                                                          
[68386.101964]  [<ffffffff81014182>] system_call_fastpath+0x16/0x1b                                                                                                                
[68386.101967] INFO: task qemu-dm:23100 blocked for more than 120 seconds.                                                                                                         
[68386.102062] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.                                                                                           
[68386.102227] qemu-dm       D ffff88011e03fec0     0 23100  23101 0x00000000                                                                                                      
[68386.102233]  ffff88011e03fd48 0000000000000286 0000000000000000 ffffffff8103227e                                                                                                
[68386.102242]  ffff88011e03fcd8 ffffffff0002e752 0000000000000017 ffff8804ec618038                                                                                                
[68386.102250]  0000000000013c00 000000000000de88 ffff8803dd049670 ffffffff81623020                                                                                                
[68386.102258] Call Trace:                                                                                                                                                         
[68386.102263]  [<ffffffff8103227e>] ? pvclock_clocksource_read+0x4e/0x90                                                                                                          
[68386.102268]  [<ffffffff8103227e>] ? pvclock_clocksource_read+0x4e/0x90                                                                                                          
[68386.102273]  [<ffffffff8143d45d>] schedule_timeout+0x18d/0x220                                                                                                                  
[68386.102277]  [<ffffffff810100b2>] ? check_events+0x12/0x20                                                                                                                      
[68386.102282]  [<ffffffff8100feb1>] ? xen_clocksource_read+0x21/0x30                                                                                                              
[68386.102286]  [<ffffffff81010fa6>] ? xen_spin_lock+0xa6/0x110                                                                                                                    
[68386.102291]  [<ffffffff8101009f>] ? xen_restore_fl_direct_end+0x0/0x1                                                                                                           
[68386.102295]  [<ffffffff8143c50c>] wait_for_common+0x15c/0x1a0                                                                                                                   
[68386.102300]  [<ffffffff8104d840>] ? default_wake_function+0x0/0x10                                                                                                              
[68386.102305]  [<ffffffff8143c5e8>] wait_for_completion+0x18/0x20                                                                                                                 
[68386.102309]  [<ffffffff8106bbf3>] flush_work+0x73/0xc0                                                                                                                          
[68386.102313]  [<ffffffff8106bc40>] ? wq_barrier_func+0x0/0x10                                                                                                                    
[68386.102318]  [<ffffffff810c9f10>] ? lru_add_drain_per_cpu+0x0/0x10                                                                                                              
[68386.102323]  [<ffffffff8106c583>] schedule_on_each_cpu+0xc3/0x100                                                                                                               
[68386.102327]  [<ffffffff810c9590>] lru_add_drain_all+0x10/0x20                                                                                                                   
[68386.102332]  [<ffffffff810def75>] sys_mlock+0x45/0x110                                                                                                                          
[68386.102336]  [<ffffffff81014182>] system_call_fastpath+0x16/0x1b                                                                                                                
[68386.102340] INFO: task qemu-dm:23646 blocked for more than 120 seconds.                                                                                                         
[68386.102429] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.                                                                                           
[68386.102590] qemu-dm       D ffff880395123ec0     0 23646  23650 0x00000000                                                                                                      
[68386.102597]  ffff880395123d48 0000000000000282 0000000000000000 ffffffff8103227e                                                                                                
[68386.102605]  ffff880395123cd8 ffffffff0002e752 0000000000000017 ffff8804ec618038                                                                                                
[68386.102613]  0000000000013c00 000000000000de88 ffff8805b51f8000 ffffffff81623020                                                                                                
[68386.102622] Call Trace:                                                                                                                                                         
[68386.102627]  [<ffffffff8103227e>] ? pvclock_clocksource_read+0x4e/0x90                                                                                                          
[68386.102632]  [<ffffffff8103227e>] ? pvclock_clocksource_read+0x4e/0x90                                                                                                          
[68386.102637]  [<ffffffff8143d45d>] schedule_timeout+0x18d/0x220                                                                                                                  
[68386.102642]  [<ffffffff810100b2>] ? check_events+0x12/0x20                                                                                                                      
[68386.102646]  [<ffffffff8100feb1>] ? xen_clocksource_read+0x21/0x30                                                                                                              
[68386.102650]  [<ffffffff81010fa6>] ? xen_spin_lock+0xa6/0x110                                                                                                                    
[68386.102655]  [<ffffffff8101009f>] ? xen_restore_fl_direct_end+0x0/0x1                                                                                                           
[68386.102659]  [<ffffffff8143c50c>] wait_for_common+0x15c/0x1a0                                                                                                                   
[68386.102664]  [<ffffffff8104d840>] ? default_wake_function+0x0/0x10                                                                                                              
[68386.102668]  [<ffffffff8143c5e8>] wait_for_completion+0x18/0x20                                                                                                                 
[68386.102672]  [<ffffffff8106bbf3>] flush_work+0x73/0xc0                                                                                                                          
[68386.102676]  [<ffffffff8106bc40>] ? wq_barrier_func+0x0/0x10                                                                                                                    
[68386.102681]  [<ffffffff810c9f10>] ? lru_add_drain_per_cpu+0x0/0x10                                                                                                              
[68386.102685]  [<ffffffff8106c583>] schedule_on_each_cpu+0xc3/0x100                                                                                                               
[68386.102690]  [<ffffffff810c9590>] lru_add_drain_all+0x10/0x20                                                                                                                   
[68386.102694]  [<ffffffff810def75>] sys_mlock+0x45/0x110                                                                                                                          
[68386.102698]  [<ffffffff81014182>] system_call_fastpath+0x16/0x1b                              
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