Re: [Xen-devel] dom0 hangs on shutdown if guest running

[viciu <viciuk2@xxxxxxxxx>]

Hi,

I've got the same problem.

My workaround was to change order of init scripts: /etc/init.d/xendomains stop is now executed before xend stops. This destroys all domUs and reboots properly.
(So sth like this does the job: update-rc.d xendomains defaults 99 00).
I'm not sure if this behaviour is ok. Maybe stopping xend should also shutdown domains?

W.

2010/6/18 Alex Zeffertt <alex.zeffertt@xxxxxxxxxxxxx>

Hi all,

When I run reboot/shutdown in dom0 it hangs.  This only happens when a domU is running.  I'm running xen 4.0.1-rc2 and linux-2.6-pvops.git revision b29254c40d.  Does anybody know what might cause this?

The console output is as follows:

 Sending all processes the TERM signal... [  OK  ]
 Sending all processes the KILL signal... init: rc main process (3276) stopped by STOP signal
 init: rc main process (3276) continued by CONT signal
 [  OK  ]
 Saving random seed:  [  OK  ]
 Syncing hardware clock to system time [ 2007.722726] type=1111
 audit(1276874826.499:125): user pid=3630 uid=0 auid=4294967295
 ses=4294967295 subj=system_u  :system_r:hwclock_t:s0 msg='changing system time: exe="/sbin/hwclock" hostname=? addr=? terminal=? res=success'
 [  OK  ]
 Turning off swap:  [  OK  ]
 Unmounting file systems:  [ 2007.780035] EXT4-fs: mballoc: 0 blocks 0 reqs (0 success)
 [ 2007.780052] EXT4-fs: mballoc: 0 extents scanned, 0 goal hits, 0 2^N hits, 0 breaks, 0 lost
 [ 2007.780064] EXT4-fs: mballoc: 0 generated and it took 0
 [ 2007.780073] EXT4-fs: mballoc: 0 preallocated, 0 discarded
 [ 2007.781760] EXT4-fs: mballoc: 0 blocks 0 reqs (0 success)
 [ 2007.781772] EXT4-fs: mballoc: 0 extents scanned, 0 goal hits, 0 2^N hits, 0 breaks, 0 lost
 [ 2007.781784] EXT4-fs: mballoc: 0 generated and it took 0
 [ 2007.781793] EXT4-fs: mballoc: 0 preallocated, 0 discarded
 [  OK  ]
 Please stand by while rebooting the system...
 [ 2007.993669] type=1128 audit(1276874826.770:126): user pid=3276
 uid=0 auid=4294967295 ses=4294967295
 subj=system_u:system_r:initrc_t:s0 msg='init: exe="  /sbin/reboot" hostname=? addr=? terminal=console res=success'
 [ 2007.993760] md: stopping all md devices.
 [ 2008.993969] xenbus_dev_shutdown: backend/console/2/0: Initialising != Connected, skipping

-------> HANGS HERE <---------


At this point I can dump the task info using Sysrq (^O t) and I get the listing below.  I notice that both kblockd/0 and kblockd/1 are in spinlocks....

 [ 2060.486476] SysRq : Show State
 [ 2060.486493]   task                PC stack   pid father
 [ 2060.486503] init          S f705028c     0     1      0 0x00000000
 [ 2060.486522]  f703bae8 00000282 c1710260 f705028c c17f4f44 c17f9ac0 f705028c f703bac0
 [ 2060.486561]  c17f9ac0 c17f9ac0 c17f9ac0 001a0ecf 00000020 00000001 7bf8edea 000001d3
 [ 2060.486626]  f7e16ac0 f7050000 c10597ca c1022023 00000000 fffffffe 00000000 00000000
 [ 2060.486665] Call Trace:
 [ 2060.486682]  [<c10597ca>] ? __do_softirq+0x15d/0x16c
 [ 2060.486696]  [<c1022023>] ? xen_force_evtchn_callback+0xf/0x14
 [ 2060.486712]  [<c14c190a>] schedule_hrtimeout_range+0x31/0xf0
 [ 2060.486726]  [<c10226f4>] ? check_events+0x8/0xc
 [ 2060.486739]  [<c10226eb>] ? xen_restore_fl_direct_end+0x0/0x1
 [ 2060.486753]  [<c14c2393>] ? _spin_unlock_irqrestore+0x2e/0x30
 [ 2060.486768]  [<c1066fa6>] ? add_wait_queue+0x30/0x36
 [ 2060.486782]  [<c10dc091>] ? __pollwait+0x9f/0xa5
 [ 2060.486795]  [<c10dba84>] poll_schedule_timeout+0x28/0x3e
 [ 2060.486808]  [<c10dbfab>] do_select+0x4a7/0x4ee
 [ 2060.486821]  [<c10dbff2>] ? __pollwait+0x0/0xa5
 [ 2060.486833]  [<c10dc097>] ? pollwake+0x0/0x60
 [ 2060.486846]  [<c10dc097>] ? pollwake+0x0/0x60
 [ 2060.486858]  [<c10dc097>] ? pollwake+0x0/0x60
 [ 2060.486870]  [<c10dc097>] ? pollwake+0x0/0x60
 [ 2060.486883]  [<c10226f4>] ? check_events+0x8/0xc
 [ 2060.486896]  [<c10226eb>] ? xen_restore_fl_direct_end+0x0/0x1
 [ 2060.486910]  [<c14c2393>] ? _spin_unlock_irqrestore+0x2e/0x30
 [ 2060.486925]  [<c119fddd>] ? avc_has_perm_noaudit+0x1fa/0x345
 [ 2060.486939]  [<c10ac09e>] ? __free_pages+0x1e/0x20
 [ 2060.486953]  [<c119ff64>] ? avc_has_perm+0x3c/0x46
 [ 2060.486965]  [<c1022632>] ? xen_sched_clock+0x1a/0x72
 [ 2060.486979]  [<c1022540>] ? xen_clocksource_read+0x1b/0x1e
 [ 2060.486992]  [<c1022540>] ? xen_clocksource_read+0x1b/0x1e
 [ 2060.487005]  [<c10225d3>] ? xen_vcpuop_set_next_event+0x50/0x6d
 [ 2060.487019]  [<c10708c8>] ? clockevents_program_event+0xba/0xc8
 [ 2060.487034]  [<c10717ba>] ? tick_dev_program_event+0x34/0xa2
 [ 2060.487048]  [<c1071870>] ? tick_program_event+0x20/0x27
 [ 2060.487062]  [<c1069e91>] ? hrtimer_interrupt+0x135/0x1dd
 [ 2060.487074]  [<c1022023>] ? xen_force_evtchn_callback+0xf/0x14
 [ 2060.487089]  [<c11d7227>] ? might_fault+0x8/0xa
 [ 2060.487102]  [<c11d7256>] ? copy_from_user+0x2d/0x115
 [ 2060.487115]  [<c10dc251>] core_sys_select+0x114/0x18f
 [ 2060.487129]  [<c119ff64>] ? avc_has_perm+0x3c/0x46
 [ 2060.487142]  [<c11a08ac>] ? selinux_task_wait+0x30/0x32
 [ 2060.487155]  [<c119d9c8>] ? security_task_wait+0xf/0x11
 [ 2060.487168]  [<c10565ee>] ? wait_consider_task+0x6a/0xacc
 [ 2060.487181]  [<c1022023>] ? xen_force_evtchn_callback+0xf/0x14
 [ 2060.487195]  [<c10226f4>] ? check_events+0x8/0xc
 [ 2060.487207]  [<c1022540>] ? xen_clocksource_read+0x1b/0x1e
 [ 2060.487221]  [<c10225fa>] ? xen_clocksource_get_cycles+0xa/0x28
 [ 2060.487235]  [<c106d529>] ? clocksource_read+0x9/0xc
 [ 2060.487248]  [<c10dc476>] sys_select+0x68/0x84
 [ 2060.487260]  [<c1065e9b>] ? sys_clock_gettime+0x64/0x77
 [ 2060.487274]  [<c1025954>] sysenter_do_call+0x12/0x28
 [ 2060.487284] kthreadd      S f705078c     0     2      0 0x00000000
 [ 2060.487302]  f7057fcc 00000246 00000000 f705078c c17f4f44 c17f9ac0 f705078c f5487c50
 [ 2060.487340]  c17f9ac0 c17f9ac0 00000000 00000000 0000007b 00000001 6b826545 000001d2
 [ 2060.487378]  f7e16ac0 f7050500 00000061 00000286 00000000 00000000 f5487c50 c171d018
 [ 2060.487417] Call Trace:
 [ 2060.487428]  [<c1066a00>] kthreadd+0x78/0xe3
 [ 2060.487441]  [<c1066988>] ? kthreadd+0x0/0xe3
 [ 2060.487454]  [<c1026477>] kernel_thread_helper+0x7/0x10
 [ 2060.487464] migration/0   S f705118c     0     3      2 0x00000000
 [ 2060.487470]  f705ff90 00000246 00000001 f705118c c17f4f44 c17f9ac0 f705118c c1022023
 [ 2060.487470]  c17f9ac0 c17f9ac0 c17f9ac0 001a0efd c10226f4 00000000 7c7b908a 000001d3
 [ 2060.487470]  f7e06ac0 f7050f00 f705ff90 c1049c08 00000000 00000000 f7e06ac0 f7e06f1c
 [ 2060.487470] Call Trace:
 [ 2060.487470]  [<c1022023>] ? xen_force_evtchn_callback+0xf/0x14
 [ 2060.487470]  [<c10226f4>] ? check_events+0x8/0xc
 [ 2060.487470]  [<c1049c08>] ? complete+0x34/0x3e
 [ 2060.487470]  [<c105098a>] ? migration_thread+0x0/0x1d8
 [ 2060.487470]  [<c1050aea>] migration_thread+0x160/0x1d8
 [ 2060.487470]  [<c1049c08>] ? complete+0x34/0x3e
 [ 2060.487470]  [<c105098a>] ? migration_thread+0x0/0x1d8
 [ 2060.487470]  [<c1066ad6>] kthread+0x6b/0x70
 [ 2060.487470]  [<c1066a6b>] ? kthread+0x0/0x70
 [ 2060.487470]  [<c1026477>] kernel_thread_helper+0x7/0x10
 [ 2060.487470] ksoftirqd/0   S f705168c     0     4      2 0x00000000
 [ 2060.487470]  f7061fa8 00000246 c108fbe5 f705168c c17f4f44 c17f9ac0 f705168c c17899e0
 [ 2060.487470]  c17f9ac0 c17f9ac0 c17f9ac0 001a0efd c10597ca 00000000 857681a0 000001d3
 [ 2060.487470]  f7e06ac0 f7051400 c10226f4 f7e02508 00000000 f7060200 00000000 c17899e0
 [ 2060.487470] Call Trace:
 [ 2060.487470]  [<c108fbe5>] ? __rcu_process_callbacks+0x37/0x1a8
 [ 2060.487470]  [<c10597ca>] ? __do_softirq+0x15d/0x16c
 [ 2060.487470]  [<c10226f4>] ? check_events+0x8/0xc
 [ 2060.487470]  [<c1059831>] ? ksoftirqd+0x0/0xb4
 [ 2060.487470]  [<c105985d>] ksoftirqd+0x2c/0xb4
 [ 2060.487470]  [<c1066ad6>] kthread+0x6b/0x70
 [ 2060.487470]  [<c1066a6b>] ? kthread+0x0/0x70
 [ 2060.487470]  [<c1026477>] kernel_thread_helper+0x7/0x10
 [ 2060.487470] migration/1   S f7051b8c     0     5      2 0x00000000
 [ 2060.487470]  f7063f90 00000246 c14d0dbc f7051b8c c17f4f44 c17f9ac0 f7051b8c f444f200
 [ 2060.487470]  c17f9ac0 c17f9ac0 f7e02130 f7e16ac0 f7063f88 00000001 85f69449 000001d3
 [ 2060.487470]  f7e16ac0 f7051900 000001d3 00000000 f7e16ac0 f7e02130 f7e16ac0 f7e16f1c
 [ 2060.487470] Call Trace:
 [ 2060.487470]  [<c1050aea>] migration_thread+0x160/0x1d8
 [ 2060.487470]  [<c105098a>] ? migration_thread+0x0/0x1d8
 [ 2060.487470]  [<c1066ad6>] kthread+0x6b/0x70
 [ 2060.487470]  [<c1066a6b>] ? kthread+0x0/0x70
 [ 2060.487470]  [<c1026477>] kernel_thread_helper+0x7/0x10
 [ 2060.487470] ksoftirqd/1   S f705208c     0     6      2 0x00000000
 [ 2060.487470]  f7065fa8 00000246 c108fbe5 f705208c c17f4f44 c17f9ac0 f705208c c17899e0
 [ 2060.487470]  c17f9ac0 c17f9ac0 c17f9ac0 001a0ecf c10597ca 00000001 7d261825 000001d3
 [ 2060.487470]  f7e16ac0 f7051e00 c10226f4 f7e12508 00000000 f7060200 00000001 c17899e0
 [ 2060.487470] Call Trace:
 [ 2060.487470]  [<c108fbe5>] ? __rcu_process_callbacks+0x37/0x1a8
 [ 2060.487470]  [<c10597ca>] ? __do_softirq+0x15d/0x16c
 [ 2060.487470]  [<c10226f4>] ? check_events+0x8/0xc
 [ 2060.487470]  [<c1059831>] ? ksoftirqd+0x0/0xb4
 [ 2060.487470]  [<c105985d>] ksoftirqd+0x2c/0xb4
 [ 2060.487470]  [<c1066ad6>] kthread+0x6b/0x70
 [ 2060.487470]  [<c1066a6b>] ? kthread+0x0/0x70
 [ 2060.487470]  [<c1026477>] kernel_thread_helper+0x7/0x10
 [ 2060.487470] events/0      S f705258c     0     7      2 0x00000000
 [ 2060.487470]  f7085f7c 00000246 00000000 f705258c c17f4f44 c17f9ac0 f705258c f7085f40
 [ 2060.487470]  c17f9ac0 c17f9ac0 c17f9ac0 001a6812 00000000 00000000 a191ce79 000001df
 [ 2060.487470]  f7e06ac0 f7052300 c10226eb c14c2393 f7085f7c c1066f07 f7e07080 f7e07084
 [ 2060.487470] Call Trace:
 [ 2060.487470]  [<c10226eb>] ? xen_restore_fl_direct_end+0x0/0x1
 [ 2060.487470]  [<c14c2393>] ? _spin_unlock_irqrestore+0x2e/0x30
 [ 2060.487470]  [<c1066f07>] ? prepare_to_wait+0x42/0x47
 [ 2060.487470]  [<c1063583>] worker_thread+0x92/0x1cf
 [ 2060.487470]  [<c10226f4>] ? check_events+0x8/0xc
 [ 2060.487470]  [<c10b7192>] ? vmstat_update+0x0/0x2e
 [ 2060.487470]  [<c1066d65>] ? autoremove_wake_function+0x0/0x2f
 [ 2060.487470]  [<c10634f1>] ? worker_thread+0x0/0x1cf
 [ 2060.487470]  [<c1066ad6>] kthread+0x6b/0x70
 [ 2060.487470]  [<c1066a6b>] ? kthread+0x0/0x70
 [ 2060.487470]  [<c1026477>] kernel_thread_helper+0x7/0x10
 [ 2060.487470] events/1      S f7052a8c     0     8      2 0x00000000
 [ 2060.487470]  f7087f7c 00000246 00000001 f7052a8c c17f4f44 c17f9ac0 f7052a8c f7087f40
 [ 2060.487470]  c17f9ac0 c17f9ac0 c17f9ac0 001a12d7 00000000 00000001 a1920063 000001df
 [ 2060.487470]  f7e16ac0 f7052800 c10226eb c14c2393 f7087f7c c1066f07 f7e17080 f7e17084
 [ 2060.487470] Call Trace:
 [ 2060.487470]  [<c10226eb>] ? xen_restore_fl_direct_end+0x0/0x1
 [ 2060.487470]  [<c14c2393>] ? _spin_unlock_irqrestore+0x2e/0x30
 [ 2060.487470]  [<c1066f07>] ? prepare_to_wait+0x42/0x47
 [ 2060.487470]  [<c1063583>] worker_thread+0x92/0x1cf
 [ 2060.487470]  [<c10226f4>] ? check_events+0x8/0xc
 [ 2060.487470]  [<c10b7192>] ? vmstat_update+0x0/0x2e
 [ 2060.487470]  [<c1066d65>] ? autoremove_wake_function+0x0/0x2f
 [ 2060.487470]  [<c10634f1>] ? worker_thread+0x0/0x1cf
 [ 2060.487470]  [<c1066ad6>] kthread+0x6b/0x70
 [ 2060.487470]  [<c1066a6b>] ? kthread+0x0/0x70
 [ 2060.487470]  [<c1026477>] kernel_thread_helper+0x7/0x10
 [ 2060.487470] cpuset        S f7052f8c     0     9      2 0x00000000
 [ 2060.487470]  f7089f7c 00000246 f7052d00 f7052f8c c17f4f44 c17f9ac0 f7052f8c 00000000
 [ 2060.487470]  c17f9ac0 c17f9ac0 f7e070cc f7089f98 00000000 00000000 0135a878 00000000
 [ 2060.487470]  f7e06ac0 f7052d00 c10226eb c14c2393 f7089f7c c1066f07 f7e070c0 f7e070c0
 [ 2060.487470] Call Trace:
 [ 2060.487470]  [<c10226eb>] ? xen_restore_fl_direct_end+0x0/0x1
 [ 2060.487470]  [<c14c2393>] ? _spin_unlock_irqrestore+0x2e/0x30
 [ 2060.487470]  [<c1066f07>] ? prepare_to_wait+0x42/0x47
 [ 2060.487470]  [<c1063583>] worker_thread+0x92/0x1cf
 [ 2060.487470]  [<c10226f4>] ? check_events+0x8/0xc
 [ 2060.487470]  [<c1066d65>] ? autoremove_wake_function+0x0/0x2f
 [ 2060.487470]  [<c10634f1>] ? worker_thread+0x0/0x1cf
 [ 2060.487470]  [<c1066ad6>] kthread+0x6b/0x70
 [ 2060.487470]  [<c1066a6b>] ? kthread+0x0/0x70
 [ 2060.487470]  [<c1026477>] kernel_thread_helper+0x7/0x10
 [ 2060.487470] khelper       S f705348c     0    10      2 0x00000000
 [ 2060.487470]  f708df7c 00000246 00000000 f705348c c17f4f44 c17f9ac0 f705348c 00000000
 [ 2060.487470]  c17f9ac0 c17f9ac0 c17f9ac0 00083386 00000000 00000001 0389f6eb 000000c3
 [ 2060.487470]  f7e16ac0 f7053200 c10226eb c14c2393 f708df7c c1066f07 f7e07100 f7e07104
 [ 2060.487470] Call Trace:
 [ 2060.487470]  [<c10226eb>] ? xen_restore_fl_direct_end+0x0/0x1
 [ 2060.487470]  [<c14c2393>] ? _spin_unlock_irqrestore+0x2e/0x30
 [ 2060.487470]  [<c1066f07>] ? prepare_to_wait+0x42/0x47
 [ 2060.487470]  [<c1063583>] worker_thread+0x92/0x1cf
 [ 2060.487470]  [<c10226f4>] ? check_events+0x8/0xc
 [ 2060.487470]  [<c1062567>] ? __call_usermodehelper+0x0/0x59
 [ 2060.487470]  [<c1066d65>] ? autoremove_wake_function+0x0/0x2f
 [ 2060.487470]  [<c10634f1>] ? worker_thread+0x0/0x1cf
 [ 2060.487470]  [<c1066ad6>] kthread+0x6b/0x70
 [ 2060.487470]  [<c1066a6b>] ? kthread+0x0/0x70
 [ 2060.487470]  [<c1026477>] kernel_thread_helper+0x7/0x10
 [ 2060.487470] netns         S f709078c     0    13      2 0x00000000
 [ 2060.487470]  f7097f7c 00000246 f7090500 f709078c c17f4f44 c17f9ac0 f709078c 00000000
 [ 2060.487470]  c17f9ac0 c17f9ac0 f7e0714c f7097f98 00000000 00000000 013f30eb 00000000
 [ 2060.487470]  f7e06ac0 f7090500 c10226eb c14c2393 f7097f7c c1066f07 f7e07140 f7e07140
 [ 2060.487470] Call Trace:
 [ 2060.487470]  [<c10226eb>] ? xen_restore_fl_direct_end+0x0/0x1
 [ 2060.487470]  [<c14c2393>] ? _spin_unlock_irqrestore+0x2e/0x30
 [ 2060.487470]  [<c1066f07>] ? prepare_to_wait+0x42/0x47
 [ 2060.487470]  [<c1063583>] worker_thread+0x92/0x1cf
 [ 2060.487470]  [<c10226f4>] ? check_events+0x8/0xc
 [ 2060.487470]  [<c1066d65>] ? autoremove_wake_function+0x0/0x2f
 [ 2060.487470]  [<c10634f1>] ? worker_thread+0x0/0x1cf
 [ 2060.487470]  [<c1066ad6>] kthread+0x6b/0x70
 [ 2060.487470]  [<c1066a6b>] ? kthread+0x0/0x70
 [ 2060.487470]  [<c1026477>] kernel_thread_helper+0x7/0x10
 [ 2060.487470] async/mgr     S f709168c     0    16      2 0x00000000
 [ 2060.487470]  f709df90 00000246 c10226f4 f709168c c17f4f44 c17f9ac0 f709168c c14c2393
 [ 2060.487470]  c17f9ac0 c17f9ac0 f709df88 c1050462 00000000 00000001 474dbc73 00000000
 [ 2060.487470]  f7e16ac0 f7091400 00000000 f6890200 00000001 00000005 00000001 00000005
 [ 2060.487470] Call Trace:
 [ 2060.487470]  [<c10226f4>] ? check_events+0x8/0xc
 [ 2060.487470]  [<c14c2393>] ? _spin_unlock_irqrestore+0x2e/0x30
 [ 2060.487470]  [<c1050462>] ? try_to_wake_up+0x2a7/0x2b2
 [ 2060.487470]  [<c106bb5e>] async_manager_thread+0x9e/0xbe
 [ 2060.487470]  [<c105046d>] ? default_wake_function+0x0/0xd
 [ 2060.487470]  [<c106bac0>] ? async_manager_thread+0x0/0xbe
 [ 2060.487470]  [<c1066ad6>] kthread+0x6b/0x70
 [ 2060.487470]  [<c1066a6b>] ? kthread+0x0/0x70
 [ 2060.487470]  [<c1026477>] kernel_thread_helper+0x7/0x10
 [ 2060.487470] xenwatch      S f709348c     0    22      2 0x00000000
 [ 2060.487470]  f70d7f90 00000246 f497fe40 f709348c c17f4f44 c17f9ac0 f709348c c1716550
 [ 2060.487470]  c17f9ac0 c17f9ac0 c1731448 f70d7f98 00000000 00000000 56df3b17 000000c9
 [ 2060.487470]  f7e06ac0 f7093200 c10226eb c14c2393 f70d7f90 c1066f07 f480f540 f70d7f98
 [ 2060.487470] Call Trace:
 [ 2060.487470]  [<c10226eb>] ? xen_restore_fl_direct_end+0x0/0x1
 [ 2060.487470]  [<c14c2393>] ? _spin_unlock_irqrestore+0x2e/0x30
 [ 2060.487470]  [<c1066f07>] ? prepare_to_wait+0x42/0x47
 [ 2060.487470]  [<c122c3d4>] xenwatch_thread+0x6e/0x102
 [ 2060.487470]  [<c1066d65>] ? autoremove_wake_function+0x0/0x2f
 [ 2060.487470]  [<c122c366>] ? xenwatch_thread+0x0/0x102
 [ 2060.487470]  [<c1066ad6>] kthread+0x6b/0x70
 [ 2060.487470]  [<c1066a6b>] ? kthread+0x0/0x70
 [ 2060.487470]  [<c1026477>] kernel_thread_helper+0x7/0x10
 [ 2060.487470] xenbus        S f709398c     0    23      2 0x00000000
 [ 2060.487470]  f70d9f84 00000246 00000001 f709398c c17f4f44 c17f9ac0 f709398c 00000003
 [ 2060.487470]  c17f9ac0 c17f9ac0 c1731424 f70d9f8c 00000000 00000000 56dfaec4 000000c9
 [ 2060.487470]  f7e06ac0 f7093700 c10226eb c14c2393 f70d9f84 c1066f07 f480f680 00000000
 [ 2060.487470] Call Trace:
 [ 2060.487470]  [<c10226eb>] ? xen_restore_fl_direct_end+0x0/0x1
 [ 2060.487470]  [<c14c2393>] ? _spin_unlock_irqrestore+0x2e/0x30
 [ 2060.487470]  [<c1066f07>] ? prepare_to_wait+0x42/0x47
 [ 2060.487470]  [<c122bc36>] xb_wait_for_data_to_read+0x84/0x9d
 [ 2060.487470]  [<c1066d65>] ? autoremove_wake_function+0x0/0x2f
 [ 2060.487470]  [<c122c19b>] xenbus_thread+0xb/0x1d6
 [ 2060.487470]  [<c122c190>] ? xenbus_thread+0x0/0x1d6
 [ 2060.487470]  [<c1066ad6>] kthread+0x6b/0x70
 [ 2060.487470]  [<c1066a6b>] ? kthread+0x0/0x70
 [ 2060.487470]  [<c1026477>] kernel_thread_helper+0x7/0x10
 [ 2060.487470] kblockd/0     S f70ddb8c     0   241      2 0x00000000
 [ 2060.487470]  f709ff7c 00000246 f7116800 f70ddb8c c17f4f44 c17f9ac0 f70ddb8c c14c23fe
 [ 2060.487470]  c17f9ac0 c17f9ac0 f7e072ec f709ff98 00000000 00000000 7939268a 000001d3
 [ 2060.487470]  f7e06ac0 f70dd900 c10226eb c14c2393 f709ff7c c1066f07 f7e072e0 f7e072e4
 [ 2060.487470] Call Trace:
 [ 2060.487470]  [<c14c23fe>] ? _spin_lock_irq+0x18/0x2e
 [ 2060.487470]  [<c10226eb>] ? xen_restore_fl_direct_end+0x0/0x1
 [ 2060.487470]  [<c14c2393>] ? _spin_unlock_irqrestore+0x2e/0x30
 [ 2060.487470]  [<c1066f07>] ? prepare_to_wait+0x42/0x47
 [ 2060.487470]  [<c1063583>] worker_thread+0x92/0x1cf
 [ 2060.487470]  [<c10226f4>] ? check_events+0x8/0xc
 [ 2060.487470]  [<c11ced0b>] ? cfq_kick_queue+0x0/0x3c
 [ 2060.487470]  [<c1066d65>] ? autoremove_wake_function+0x0/0x2f
 [ 2060.487470]  [<c10634f1>] ? worker_thread+0x0/0x1cf
 [ 2060.487470]  [<c1066ad6>] kthread+0x6b/0x70
 [ 2060.487470]  [<c1066a6b>] ? kthread+0x0/0x70
 [ 2060.487470]  [<c1026477>] kernel_thread_helper+0x7/0x10
 [ 2060.487470] kblockd/1     S f70de08c     0   242      2 0x00000000
 [ 2060.487470]  f7095f7c 00000246 f7116800 f70de08c c17f4f44 c17f9ac0 f70de08c c14c23fe
 [ 2060.487470]  c17f9ac0 c17f9ac0 f7e172ec f7095f98 00000000 00000001 7bfcbffc 000001d3
 [ 2060.487470]  f7e16ac0 f70dde00 c10226eb c14c2393 f7095f7c c1066f07 f7e172e0 f7e172e4
 [ 2060.487470] Call Trace:
 [ 2060.487470]  [<c14c23fe>] ? _spin_lock_irq+0x18/0x2e
 [ 2060.487470]  [<c10226eb>] ? xen_restore_fl_direct_end+0x0/0x1
 [ 2060.487470]  [<c14c2393>] ? _spin_unlock_irqrestore+0x2e/0x30
 [ 2060.487470]  [<c1066f07>] ? prepare_to_wait+0x42/0x47
 [ 2060.487470]  [<c1063583>] worker_thread+0x92/0x1cf
 [ 2060.487470]  [<c10226f4>^M^?^?


TIA,

Alex

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel