On Fri, Apr 14, 2017 at 09:15:58AM +0200, Vincent Legout wrote : > On Thu, Apr 13, 2017 at 11:41:37PM +0100, Ben Hutchings wrote : > > Control: tag -1 moreinfo > > > > On Thu, 2017-04-13 at 11:18 +0200, Vincent Legout wrote: > > > Package: src:linux > > > Version: 3.16.39-1+deb8u2 > > > Severity: normal > > > > > > Hi, > > > > > > A xen jessie domU crashes around 5 minutes after the boot with the > > > attached backtrace (at every boot). dom0 is also a Debian jessie running > > > Xen 4.8. > > > > > > It only happens when the guest is in pv mode, it works fine with pvhvm. > > > > > > It also crashes with older 3.16 kernels and 4.0.2-1, but not with > > > 4.2.1-1 (last 2 kernels from snapshot.debian.org). > > > > > > # uname -a > > > 3.16.0-4-amd64 #1 SMP Debian 3.16.39-1+deb8u2 (2017-03-07) x86_64 > > > GNU/Linux > > > > From the crash log: > > > > > [ 300.632389] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W > > > 3.16.0-4-amd64 #1 Debian 3.16.39-1+deb8u2 > > > > This indicates there was an earlier WARNING message; what was that? > > Thanks for the answer. > > I got this WARNING after I increased verbosity in the command line:
The WARNING and BUG disappear if "maxvcpus" is disabled in the guest configuration (which prevents adding or removing vcpus). Could cpu hotplug be buggy in 3.16? And Xen triggers this bug after 5 minutes even without doing any 'xl vcpu-set'? With "maxvcpus" set larger "vcpus", xl vcpu-set seems to work most of the time (between 1 and 16 vcpus), but after several tries, I got the attached trace. Vincent
[ 62.000210] BUG: unable to handle kernel NULL pointer dereference at
0000000000000008
[ 62.000229] IP: [<ffffffff81074dfb>] migrate_timer_list+0x3b/0xc0
[ 62.000246] PGD 0
[ 62.000251] Oops: 0002 [#1] SMP
[ 62.000261] Modules linked in: x86_pkg_temp_thermal thermal_sys intel_rapl
coretemp crc32_pclmul evdev aesni_intel aes_x86_64 lrw gf128mul glue_helper
ablk_helper pcspkr cryptd autofs4 ext4 crc16 mbcache jbd2 xen_netfront
xen_blkfront crct10dif_pclmul crct10dif_common crc32c_intel
[ 62.000306] CPU: 9 PID: 89 Comm: xenwatch Not tainted 3.16.0-4-amd64 #1
Debian 3.16.39-1+deb8u2
[ 62.000318] task: ffff88003d597370 ti: ffff88003d598000 task.ti:
ffff88003d598000
[ 62.000326] RIP: e030:[<ffffffff81074dfb>] [<ffffffff81074dfb>]
migrate_timer_list+0x3b/0xc0
[ 62.000338] RSP: e02b:ffff88003d59bd70 EFLAGS: 00010087
[ 62.000344] RAX: dead000000000200 RBX: 0000000000000000 RCX: 000000000000223a
[ 62.000351] RDX: 0000000000000000 RSI: ffff88003f96ca00 RDI: ffff88003daac000
[ 62.000357] RBP: ffff88003f96ca00 R08: 0000000040000000 R09: fffffffffffffff8
[ 62.000364] R10: 0000000000000000 R11: 00000000ffffffff R12: ffff88003e3a5430
[ 62.000375] R13: ffff88003daac000 R14: ffffffff818e2fa0 R15: ffff88003e3a5030
[ 62.000387] FS: 0000000000000000(0000) GS:ffff88003f920000(0000)
knlGS:0000000000000000
[ 62.000395] CS: e033 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 62.000401] CR2: 0000000000000008 CR3: 0000000001813000 CR4: 0000000000042660
[ 62.000408] Stack:
[ 62.000411] 0000000000000000 ffff88003daac000 ffff88003e3a5c30
ffff88003e3a5830
[ 62.000422] ffff88003e3a5430 ffffffff81075188 ffff88003e3a4000
00000000fffffff2
[ 62.000432] ffffffff8184c1a0 0000000000000000 0000000000000007
0000000000000001
[ 62.000443] Call Trace:
[ 62.000455] [<ffffffff81075188>] ? timer_cpu_notify+0xf8/0x2e0
[ 62.000465] [<ffffffff8108d79e>] ? notifier_call_chain+0x4e/0x70
[ 62.000478] [<ffffffff81068abf>] ? cpu_notify+0x1f/0x40
[ 62.000486] [<ffffffff81068aea>] ? cpu_notify_nofail+0xa/0x20
[ 62.000499] [<ffffffff81508ffb>] ? _cpu_down+0x17b/0x290
[ 62.000512] [<ffffffff81360340>] ? unregister_xenbus_watch+0x210/0x210
[ 62.000520] [<ffffffff8150913d>] ? cpu_down+0x2d/0x40
[ 62.000530] [<ffffffff81357e77>] ? handle_vcpu_hotplug_event+0xa7/0xd0
[ 62.000538] [<ffffffff813603d2>] ? xenwatch_thread+0x92/0x130
[ 62.000550] [<ffffffff810a95c0>] ? prepare_to_wait_event+0xf0/0xf0
[ 62.000565] [<ffffffff810894fd>] ? kthread+0xbd/0xe0
[ 62.000572] [<ffffffff81089440>] ? kthread_create_on_node+0x180/0x180
[ 62.000586] [<ffffffff8151ad98>] ? ret_from_fork+0x58/0x90
[ 62.000594] [<ffffffff81089440>] ? kthread_create_on_node+0x180/0x180
[ 62.000600] Code: 49 89 fd 41 54 49 89 f4 55 53 48 8b 2e 48 39 ee 74 4a 66
0f 1f 44 00 00 0f 1f 44 00 00 48 8b 45 08 48 8b 55 00 48 89 ee 4c 89 ef <48> 89
42 08 48 89 10 48 b8 00 02 00 00 00 00 ad de 48 89 45 08
[ 62.000680] RIP [<ffffffff81074dfb>] migrate_timer_list+0x3b/0xc0
[ 62.000692] RSP <ffff88003d59bd70>
[ 62.000696] CR2: 0000000000000008
[ 62.000703] ---[ end trace b62387850d17f99e ]---
[ 84.492006] INFO: rcu_sched detected stalls on CPUs/tasks: { 2 8 9}
(detected by 4, t=5255 jiffies, g=614, c=613, q=59)
[ 84.492039] sending NMI to all CPUs:
[ 63.481417] NMI backtrace for cpu 0
[ 63.481417] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G D
3.16.0-4-amd64 #1 Debian 3.16.39-1+deb8u2
[ 63.481417] task: ffffffff8181a460 ti: ffffffff81800000 task.ti:
ffffffff81800000
[ 63.481417] RIP: e030:[<ffffffff8151a998>] [<ffffffff8151a998>]
_raw_spin_lock+0x28/0x30
[ 63.481417] RSP: e02b:ffff88003f803b58 EFLAGS: 00000093
[ 63.481417] RAX: 0000000000000198 RBX: ffff88003af9d3d8 RCX: 000000000000019b
[ 63.481417] RDX: 000000000000019b RSI: 0000000000000200 RDI: ffff88003daac000
[ 63.481417] RBP: ffff88003daac000 R08: ffff8800199d1098 R09: 0000000000000000
[ 63.481417] R10: 0000000000006c94 R11: ffff880019a84662 R12: 00000000ffff1938
[ 63.481417] R13: ffff88003daac000 R14: 0000000000000001 R15: 0000000000000003
[ 63.481417] FS: 0000000000000000(0000) GS:ffff88003f800000(0000)
knlGS:ffff88003f800000
[ 63.481417] CS: e033 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 63.481417] CR2: 00007f6b7002a0d8 CR3: 000000002e43b000 CR4: 0000000000042660
[ 63.481417] Stack:
[ 63.481417] ffffffff81075bdc 0000000000000200 ffff88003af9d040
00000000b004349e
[ 63.481417] ffff88000284cf00 0000000000000000 00000000b0043442
ffffffff8140f5d4
[ 63.481417] ffff88003af9d040 ffffffff814739f9 0000000300000000
00000037a84d14ed
[ 63.481417] Call Trace:
[ 63.481417] <IRQ>
[ 63.481417] [<ffffffff81075bdc>] ? mod_timer+0xcc/0x200
[ 63.481417] [<ffffffff8140f5d4>] ? sk_reset_timer+0x14/0x20
[ 63.481417] [<ffffffff814739f9>] ? tcp_ack+0x3c9/0x11e0
[ 63.481417] [<ffffffff81474c23>] ? tcp_rcv_established+0xe3/0x6c0
[ 63.481417] [<ffffffff8147eb5f>] ? tcp_v4_do_rcv+0x1af/0x4c0
[ 63.481417] [<ffffffff8143893c>] ? sk_filter_trim_cap+0x2c/0xc0
[ 63.481417] [<ffffffff81480939>] ? tcp_v4_rcv+0x6b9/0x7e0
[ 63.481417] [<ffffffff814658bf>] ? __inet_lookup_established+0x3f/0x120
[ 63.481417] [<ffffffff8145c23e>] ? ip_local_deliver_finish+0x9e/0x200
[ 63.481417] [<ffffffff81424f13>] ? __netif_receive_skb_core+0x563/0x770
[ 63.481417] [<ffffffff8100ae5c>] ? xen_clocksource_get_cycles+0x1c/0x20
[ 63.481417] [<ffffffff8142519f>] ? netif_receive_skb_internal+0x1f/0x80
[ 63.481417] [<ffffffff81425ce0>] ? napi_gro_receive+0xd0/0x100
[ 63.481417] [<ffffffffa000be34>] ? xennet_poll+0x774/0xb50 [xen_netfront]
[ 63.481417] [<ffffffff81425529>] ? net_rx_action+0x129/0x250
[ 63.481417] [<ffffffff8106d911>] ? __do_softirq+0xf1/0x2d0
[ 63.481417] [<ffffffff8106dd25>] ? irq_exit+0x95/0xa0
[ 63.481417] [<ffffffff8135cca5>] ? xen_evtchn_do_upcall+0x35/0x50
[ 63.481417] [<ffffffff8151cade>] ? xen_do_hypervisor_callback+0x1e/0x30
[ 63.481417] <EOI>
[ 63.481417] [<ffffffff810013ac>] ? xen_hypercall_sched_op+0xc/0x20
[ 63.481417] [<ffffffff810013ac>] ? xen_hypercall_sched_op+0xc/0x20
[ 63.481417] [<ffffffff8100ad3c>] ? xen_safe_halt+0xc/0x20
[ 63.481417] [<ffffffff8101da69>] ? default_idle+0x19/0xd0
[ 63.481417] [<ffffffff810a9b74>] ? cpu_startup_entry+0x374/0x470
[ 63.481417] [<ffffffff81903076>] ? start_kernel+0x497/0x4a2
[ 63.481417] [<ffffffff81902a04>] ? set_init_arg+0x4e/0x4e
[ 63.481417] [<ffffffff81904f91>] ? xen_start_kernel+0x569/0x573
[ 63.481417] Code: 00 00 00 0f 1f 44 00 00 b8 00 00 01 00 f0 0f c1 07 89 c2
c1 ea 10 66 39 c2 89 d1 75 01 c3 0f b7 07 66 39 d0 74 f7 f3 90 0f b7 07 <66> 39
c8 75 f6 c3 66 90 0f 1f 44 00 00 65 81 04 25 60 b8 00 00
[ 84.492284] NMI backtrace for cpu 4
[ 84.492289] CPU: 4 PID: 0 Comm: swapper/4 Tainted: G D
3.16.0-4-amd64 #1 Debian 3.16.39-1+deb8u2
[ 84.492295] task: ffff88003e326a60 ti: ffff88003e338000 task.ti:
ffff88003e338000
[ 84.492300] RIP: e030:[<ffffffff8100130c>] [<ffffffff8100130c>]
xen_hypercall_vcpu_op+0xc/0x20
[ 84.492309] RSP: e02b:ffff88003f883cb8 EFLAGS: 00000046
[ 84.492312] RAX: 0000000000000000 RBX: 0000000000000004 RCX: ffffffff8100130c
[ 84.492317] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 000000000000000b
[ 84.492322] RBP: ffffffff818e2fa0 R08: ffffffff818e2a80 R09: 000000000000018d
[ 84.492327] R10: 00000000000097dc R11: 0000000000000246 R12: ffffffff818e2a80
[ 84.492331] R13: 0000000000000005 R14: 000000000000003b R15: ffffffff81853800
[ 84.492339] FS: 0000000000000000(0000) GS:ffff88003f880000(0000)
knlGS:ffff88003f880000
[ 84.492344] CS: e033 DS: 002b ES: 002b CR0: 0000000080050033
[ 84.492348] CR2: 00007f88d4a37095 CR3: 0000000001813000 CR4: 0000000000042660
[ 84.492352] Stack:
[ 84.492355] ffff88003f883a3e 0000000000000004 ffffffff8135cc4b
ffffffff810103da
[ 84.492362] ffff88003f88d6a0 ffffffff81853800 0000000000000004
ffffffff818e2fe0
[ 84.492370] ffffffff81047d63 ffff88003f88d6a0 ffffffff810c761d
0000000000000003
[ 84.492377] Call Trace:
[ 84.492379] <IRQ>
[ 84.492382] [<ffffffff8135cc4b>] ? xen_send_IPI_one+0x3b/0x60
[ 84.492392] [<ffffffff810103da>] ? __xen_send_IPI_mask+0x2a/0x50
[ 84.492399] [<ffffffff81047d63>] ? arch_trigger_all_cpu_backtrace+0xc3/0x140
[ 84.492406] [<ffffffff810c761d>] ? rcu_check_callbacks+0x64d/0x670
[ 84.492414] [<ffffffff810d1e00>] ? tick_sched_handle.isra.16+0x60/0x60
[ 84.492420] [<ffffffff81075fc0>] ? update_process_times+0x40/0x70
[ 84.492426] [<ffffffff810d1dc0>] ? tick_sched_handle.isra.16+0x20/0x60
[ 84.492432] [<ffffffff810d1e3c>] ? tick_sched_timer+0x3c/0x60
[ 84.492437] [<ffffffff8108c6a7>] ? __run_hrtimer+0x67/0x210
[ 84.492443] [<ffffffff8108caa9>] ? hrtimer_interrupt+0xe9/0x220
[ 84.492449] [<ffffffff8100af0a>] ? xen_timer_interrupt+0x2a/0x150
[ 84.492455] [<ffffffff8100b232>] ? xen_vcpuop_set_next_event+0x52/0x80
[ 84.492461] [<ffffffff810bcd0d>] ? handle_irq_event_percpu+0x3d/0x1d0
[ 84.492467] [<ffffffff810c021e>] ? handle_percpu_irq+0x3e/0x60
[ 84.492474] [<ffffffff810bc136>] ? generic_handle_irq+0x26/0x40
[ 84.492480] [<ffffffff8135df19>] ? __evtchn_fifo_handle_events+0x179/0x190
[ 84.492486] [<ffffffff8135afaf>] ? __xen_evtchn_do_upcall+0x3f/0x70
[ 84.492491] [<ffffffff8135cc9f>] ? xen_evtchn_do_upcall+0x2f/0x50
[ 84.492497] [<ffffffff8151cade>] ? xen_do_hypervisor_callback+0x1e/0x30
[ 84.492501] <EOI>
[ 84.492503] [<ffffffff810013ac>] ? xen_hypercall_sched_op+0xc/0x20
[ 84.492511] [<ffffffff810013ac>] ? xen_hypercall_sched_op+0xc/0x20
[ 84.492516] [<ffffffff8100ad3c>] ? xen_safe_halt+0xc/0x20
[ 84.492522] [<ffffffff8101da69>] ? default_idle+0x19/0xd0
[ 84.492527] [<ffffffff810a9b74>] ? cpu_startup_entry+0x374/0x470
[ 84.492531] Code: 41 53 50 48 c7 c0 17 00 00 00 0f 05 cc cc cc cc cc cc cc
cc cc cc cc cc cc cc cc cc cc cc cc 51 41 53 48 c7 c0 18 00 00 00 0f 05 <41> 5b
59 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 51
[ 84.492587] NMI backtrace for cpu 3
[ 84.492602] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G D
3.16.0-4-amd64 #1 Debian 3.16.39-1+deb8u2
[ 84.492611] task: ffff88003e3273b0 ti: ffff88003e330000 task.ti:
ffff88003e330000
[ 84.492618] RIP: e030:[<ffffffff8112e5af>] [<ffffffff8112e5af>]
__irq_work_run+0x1f/0x90
[ 84.492631] RSP: e02b:ffff88003f863d58 EFLAGS: 00000082
[ 84.492637] RAX: 0000000000000000 RBX: ffff88003e3273b0 RCX: ffff88003f86d568
[ 84.492643] RDX: ffff88003f86ede0 RSI: ffff88003f86d540 RDI: ffffffff81851d00
[ 84.492649] RBP: 0000000000000000 R08: 000000000000008c R09: 0000000225c17d03
[ 84.492657] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
[ 84.492663] R13: ffff88003f86d1a0 R14: ffff88003f863e10 R15: ffffffff810d1e00
[ 84.492674] FS: 0000000000000000(0000) GS:ffff88003f860000(0000)
knlGS:ffff88003f860000
[ 84.492681] CS: e033 DS: 002b ES: 002b CR0: 0000000080050033
[ 84.492686] CR2: 0000000000f3d008 CR3: 00000000256e9000 CR4: 0000000000042660
[ 84.492693] Stack:
[ 84.492696] ffffffff81075fd4 ffff88003e333e18 ffff88003f86db80
ffff88003e333e18
[ 84.492706] ffffffff810d1dc0 ffff88003f86db00 00000013ac1e470f
ffffffff810d1e3c
[ 84.492715] ffff88003f86db00 ffff88003f86d160 ffff88003f86d160
ffffffff8108c6a7
[ 84.492724] Call Trace:
[ 84.492728] <IRQ>
[ 84.492731] [<ffffffff81075fd4>] ? update_process_times+0x54/0x70
[ 84.492747] [<ffffffff810d1dc0>] ? tick_sched_handle.isra.16+0x20/0x60
[ 84.492755] [<ffffffff810d1e3c>] ? tick_sched_timer+0x3c/0x60
[ 84.492762] [<ffffffff8108c6a7>] ? __run_hrtimer+0x67/0x210
[ 84.492770] [<ffffffff8108caa9>] ? hrtimer_interrupt+0xe9/0x220
[ 84.492779] [<ffffffff8100af0a>] ? xen_timer_interrupt+0x2a/0x150
[ 84.492788] [<ffffffff8100b232>] ? xen_vcpuop_set_next_event+0x52/0x80
[ 84.492797] [<ffffffff810bcd0d>] ? handle_irq_event_percpu+0x3d/0x1d0
[ 84.492806] [<ffffffff810c021e>] ? handle_percpu_irq+0x3e/0x60
[ 84.492814] [<ffffffff810bc136>] ? generic_handle_irq+0x26/0x40
[ 84.492822] [<ffffffff8135df19>] ? __evtchn_fifo_handle_events+0x179/0x190
[ 84.492831] [<ffffffff8135afaf>] ? __xen_evtchn_do_upcall+0x3f/0x70
[ 84.492838] [<ffffffff8135cc9f>] ? xen_evtchn_do_upcall+0x2f/0x50
[ 84.492845] [<ffffffff8151cade>] ? xen_do_hypervisor_callback+0x1e/0x30
[ 84.492850] <EOI>
[ 84.492853] [<ffffffff810013ac>] ? xen_hypercall_sched_op+0xc/0x20
[ 84.492864] [<ffffffff810013ac>] ? xen_hypercall_sched_op+0xc/0x20
[ 84.492873] [<ffffffff8100ad3c>] ? xen_safe_halt+0xc/0x20
[ 84.492881] [<ffffffff8101da69>] ? default_idle+0x19/0xd0
[ 84.492889] [<ffffffff810a9b74>] ? cpu_startup_entry+0x374/0x470
[ 84.492894] Code: 66 66 66 2e 0f 1f 84 00 00 00 00 00 65 c7 04 25 d8 ed 00
00 00 00 00 00 48 c7 c2 e0 ed 00 00 65 48 03 14 25 68 cd 00 00 48 8b 02 <48> 85
c0 74 5e 41 55 41 54 55 53 ff 14 25 80 c8 82 81 25 00 02
[ 84.777622] INFO: NMI handler (arch_trigger_all_cpu_backtrace_handler) took
too long to run: 285.559 msecs
[ 81.253490] NMI backtrace for cpu 2
[ 81.253490] CPU: 2 PID: 0 Comm: swapper/2 Tainted: G D
3.16.0-4-amd64 #1 Debian 3.16.39-1+deb8u2
[ 81.253490] task: ffff88003e31c0d0 ti: ffff88003e32c000 task.ti:
ffff88003e32c000
[ 81.253490] RIP: e030:[<ffffffff810013ac>] [<ffffffff810013ac>]
xen_hypercall_sched_op+0xc/0x20
[ 81.253490] RSP: e02b:ffff88003e32fec8 EFLAGS: 00000246
[ 81.253490] RAX: 0000000000000000 RBX: ffffffff818e2fa0 RCX: ffffffff810013ac
[ 81.253490] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000001
[ 81.253490] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000
[ 81.253490] R10: 0000000000007ff0 R11: 0000000000000246 R12: ffff88003e32c000
[ 81.253490] R13: 0000000000000000 R14: ffff88003e32c000 R15: 00000000ffffffed
[ 81.253490] FS: 0000000000000000(0000) GS:ffff88003f840000(0000)
knlGS:ffff88003f840000
[ 81.253490] CS: e033 DS: 002b ES: 002b CR0: 0000000080050033
[ 81.253490] CR2: 00007f51383c3148 CR3: 0000000001813000 CR4: 0000000000042660
[ 81.253490] Stack:
[ 81.253490] 0000000000000000 ffffffff818552a0 ffffffff8100ad3c
ffffffff8101da69
[ 81.253490] ffffffff818e2fa0 0000000000000000 ffffffff810a9b74
0000000000000008
[ 81.253490] 0000000000000002 ffff88003e32c000 ffff88003e32ffd8
0e938ee7201ee631
[ 81.253490] Call Trace:
[ 81.253490] [<ffffffff8100ad3c>] ? xen_safe_halt+0xc/0x20
[ 81.253490] [<ffffffff8101da69>] ? default_idle+0x19/0xd0
[ 81.253490] [<ffffffff810a9b74>] ? cpu_startup_entry+0x374/0x470
[ 81.253490] Code: 41 53 48 c7 c0 1c 00 00 00 0f 05 41 5b 59 c3 cc cc cc cc
cc cc cc cc cc cc cc cc cc cc cc cc 51 41 53 48 c7 c0 1d 00 00 00 0f 05 <41> 5b
59 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 51
[ 84.807686] INFO: NMI handler (arch_trigger_all_cpu_backtrace_handler) took
too long to run: 315.610 msecs
[ 63.172040] NMI backtrace for cpu 8
[ 63.172040] CPU: 8 PID: 0 Comm: swapper/8 Tainted: G D
3.16.0-4-amd64 #1 Debian 3.16.39-1+deb8u2
[ 63.172040] task: ffff88003e340150 ti: ffff88003e34c000 task.ti:
ffff88003e34c000
[ 63.172040] RIP: e030:[<ffffffff8151a95c>] [<ffffffff8151a95c>]
_raw_spin_lock_irqsave+0x3c/0x50
[ 63.172040] RSP: e02b:ffff88003f903e38 EFLAGS: 00000002
[ 63.172040] RAX: 000000000000019a RBX: ffffffff81855a28 RCX: 000000000000019a
[ 63.172040] RDX: 0000000000000198 RSI: 0000000000000200 RDI: ffff88003daac000
[ 63.172040] RBP: ffffffff81a90a20 R08: ffffffff818e2fa0 R09: 0000000000800000
[ 63.172040] R10: ffffffffffffffff R11: 0000038aba3a5c37 R12: ffff88003daac000
[ 63.172040] R13: 00000000006f4dd0 R14: 0000000000000009 R15: 0000085c8e64d4f6
[ 63.172040] FS: 0000000000000000(0000) GS:ffff88003f900000(0000)
knlGS:ffff88003f900000
[ 63.172040] CS: e033 DS: 002b ES: 002b CR0: 0000000080050033
[ 63.172040] CR2: 00007f513a14c300 CR3: 0000000001813000 CR4: 0000000000042660
[ 63.172040] Stack:
[ 63.172040] ffffffff81075787 ffffffff81855a28 0000000000000000
0000000000000129
[ 63.172040] 00000000006f4dd0 ffffffffffffffff 0000085c8e64d4f6
ffffffff810cbd58
[ 63.172040] ffff88003da44000 ffffffff81a90a20 0000000000000100
ffffffff810cbb50
[ 63.172040] Call Trace:
[ 63.172040] <IRQ>
[ 63.172040] [<ffffffff81075787>] ? add_timer_on+0x57/0x100
[ 63.172040] [<ffffffff810cbd58>] ? clocksource_watchdog+0x208/0x290
[ 63.172040] [<ffffffff810cbb50>] ? clocksource_watchdog_kthread+0x30/0x30
[ 63.172040] [<ffffffff81073ea1>] ? call_timer_fn+0x31/0x140
[ 63.172040] [<ffffffff810cbb50>] ? clocksource_watchdog_kthread+0x30/0x30
[ 63.172040] [<ffffffff81075559>] ? run_timer_softirq+0x1e9/0x2f0
[ 63.172040] [<ffffffff8106d911>] ? __do_softirq+0xf1/0x2d0
[ 63.172040] [<ffffffff8106dd25>] ? irq_exit+0x95/0xa0
[ 63.172040] [<ffffffff8135cca5>] ? xen_evtchn_do_upcall+0x35/0x50
[ 63.172040] [<ffffffff8151cade>] ? xen_do_hypervisor_callback+0x1e/0x30
[ 63.172040] <EOI>
[ 63.172040] [<ffffffff810013ac>] ? xen_hypercall_sched_op+0xc/0x20
[ 63.172040] [<ffffffff810013ac>] ? xen_hypercall_sched_op+0xc/0x20
[ 63.172040] [<ffffffff8100ad3c>] ? xen_safe_halt+0xc/0x20
[ 63.172040] [<ffffffff8101da69>] ? default_idle+0x19/0xd0
[ 63.172040] [<ffffffff810a9b74>] ? cpu_startup_entry+0x374/0x470
[ 63.172040] Code: 25 90 c8 82 81 ba 00 00 01 00 f0 0f c1 17 89 d1 c1 e9 10
66 39 d1 89 c8 75 04 48 89 f0 c3 0f b7 17 66 39 d1 74 f4 f3 90 0f b7 17 <66> 39
d0 75 f6 eb e8 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 0f
[ 62.008056] NMI backtrace for cpu 9
[ 62.008056] CPU: 9 PID: 0 Comm: swapper/9 Tainted: G D
3.16.0-4-amd64 #1 Debian 3.16.39-1+deb8u2
[ 62.008056] task: ffff88003e351430 ti: ffff88003e354000 task.ti:
ffff88003e354000
[ 62.008056] RIP: e030:[<ffffffff8151a70c>] [<ffffffff8151a70c>]
_raw_spin_lock_irq+0x2c/0x40
[ 62.008056] RSP: e02b:ffff88003f923ed8 EFLAGS: 00000097
[ 62.008056] RAX: 0000000000000198 RBX: ffff88003daac000 RCX: 0000000000000199
[ 62.008056] RDX: 0000000000000199 RSI: ffff88003d866400 RDI: ffff88003daac000
[ 62.008056] RBP: ffffffff8180c088 R08: 0000000000000000 R09: 0000000000007ffe
[ 62.008056] R10: ffffffff81ae1648 R11: 0000000000000000 R12: 0000000000000001
[ 62.008056] R13: 0000000000000100 R14: 0000000000000001 R15: 00000000ffffffed
[ 62.008056] FS: 0000000000000000(0000) GS:ffff88003f920000(0000)
knlGS:0000000000000000
[ 62.008056] CS: e033 DS: 002b ES: 002b CR0: 0000000080050033
[ 62.008056] CR2: 0000000000000008 CR3: 0000000001813000 CR4: 0000000000042660
[ 62.008056] Stack:
[ 62.008056] ffffffff810753aa 000000000000003f 0000000000000000
ffffffff810c021e
[ 62.008056] 000000000000004d 00000000000000fc 0000000000000001
ffffffff8180c088
[ 62.008056] 0000000000000001 0000000000000100 0000000000000001
00000000ffffffed
[ 62.008056] Call Trace:
[ 62.008056] <IRQ>
[ 62.008056] [<ffffffff810753aa>] ? run_timer_softirq+0x3a/0x2f0
[ 62.008056] [<ffffffff810c021e>] ? handle_percpu_irq+0x3e/0x60
[ 62.008056] [<ffffffff8106d911>] ? __do_softirq+0xf1/0x2d0
[ 62.008056] [<ffffffff8106dd25>] ? irq_exit+0x95/0xa0
[ 62.008056] [<ffffffff8135cca5>] ? xen_evtchn_do_upcall+0x35/0x50
[ 62.008056] [<ffffffff8151cade>] ? xen_do_hypervisor_callback+0x1e/0x30
[ 62.008056] <EOI>
[ 62.008056] [<ffffffff810013ac>] ? xen_hypercall_sched_op+0xc/0x20
[ 62.008056] [<ffffffff810013ac>] ? xen_hypercall_sched_op+0xc/0x20
[ 62.008056] [<ffffffff8100ad3c>] ? xen_safe_halt+0xc/0x20
signature.asc
Description: PGP signature
