We don't know what triggered this bug. While the server was operational
and hosting 5 virtual machines, we saw abnormal behavior to one of them
and after a while the whole host became unresponsive due to high loads.
We were unable to force shutdown guest vms due to device or resource
busy error. We were only able to find a few more info from the quest vm
that was first affected.
Please find bellow.
Oct 29 13:53:15 ws091 kernel: [201133.016407] INFO: rcu_sched detected stalls
on CPUs/tasks:
Oct 29 13:53:15 ws091 kernel: [201133.050472] 30-...0: (1 GPs behind)
idle=83e/140000000000000/0 softirq=294262/294263 fqs=4910
Oct 29 13:53:15 ws091 kernel: [201133.053751] (detected by 7, t=15011
jiffies, g=3090541, c=3090540, q=8389)
Oct 29 13:53:15 ws091 kernel: [201133.056359] Sending NMI from CPU 7 to CPUs 30:
Oct 29 13:53:15 ws091 kernel: [201142.979012] rcu_sched kthread starved for
6707 jiffies! g3090541 c3090540 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x402 ->cpu=45
Oct 29 13:53:15 ws091 kernel: [201142.983752] rcu_sched I 0 8
2 0x80000000
Oct 29 13:53:15 ws091 kernel: [201142.983755] Call Trace:
Oct 29 13:53:15 ws091 kernel: [201142.983763] __schedule+0x3d6/0x8b0
Oct 29 13:53:15 ws091 kernel: [201142.983765] schedule+0x36/0x80
Oct 29 13:53:15 ws091 kernel: [201142.983767] schedule_timeout+0x162/0x370
Oct 29 13:53:15 ws091 kernel: [201142.983770] ?
__next_timer_interrupt+0xe0/0xe0
Oct 29 13:53:15 ws091 kernel: [201142.983774] rcu_gp_kthread+0x5b4/0x960
Oct 29 13:53:15 ws091 kernel: [201142.983779] kthread+0x105/0x140
Oct 29 13:53:15 ws091 kernel: [201142.983780] ? rcu_barrier_sched+0x10/0x10
Oct 29 13:53:15 ws091 kernel: [201142.983781] ?
kthread_destroy_worker+0x50/0x50
Oct 29 13:53:15 ws091 kernel: [201142.983784] ret_from_fork+0x35/0x40
Oct 29 13:55:57 ws091 kernel: [201305.267245] INFO: task jbd2/vdc1-8:1412
blocked for more than 120 seconds.
Oct 29 13:55:57 ws091 kernel: [201305.340061] Not tainted
4.15.0-38-generic #41~16.04.1-Ubuntu
Oct 29 13:55:57 ws091 kernel: [201305.341300] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Oct 29 13:55:57 ws091 kernel: [201305.342813] jbd2/vdc1-8 D 0 1412
2 0x80000000
Oct 29 13:55:57 ws091 kernel: [201305.342817] Call Trace:
Oct 29 13:55:57 ws091 kernel: [201305.342831] __schedule+0x3d6/0x8b0
Oct 29 13:55:57 ws091 kernel: [201305.342834] schedule+0x36/0x80
Oct 29 13:55:57 ws091 kernel: [201305.342840]
jbd2_journal_commit_transaction+0x241/0x1760
Oct 29 13:55:57 ws091 kernel: [201305.342846] ? __switch_to_asm+0x34/0x70
Oct 29 13:55:57 ws091 kernel: [201305.342848] ? __switch_to_asm+0x40/0x70
Oct 29 13:55:57 ws091 kernel: [201305.342849] ? __switch_to_asm+0x34/0x70
Oct 29 13:55:57 ws091 kernel: [201305.342851] ? __switch_to_asm+0x40/0x70
Oct 29 13:55:57 ws091 kernel: [201305.342853] ? __switch_to_asm+0x34/0x70
Oct 29 13:55:57 ws091 kernel: [201305.342855] ? __switch_to_asm+0x40/0x70
Oct 29 13:55:57 ws091 kernel: [201305.342857] ? __switch_to_asm+0x40/0x70
Oct 29 13:55:57 ws091 kernel: [201305.342859] ? __switch_to_asm+0x34/0x70
Oct 29 13:55:57 ws091 kernel: [201305.342860] ? __switch_to_asm+0x34/0x70
Oct 29 13:55:57 ws091 kernel: [201305.342862] ? __switch_to_asm+0x40/0x70
Oct 29 13:55:57 ws091 kernel: [201305.342873] ? __switch_to_asm+0x40/0x70
Oct 29 13:55:57 ws091 kernel: [201305.342879] ? wait_woken+0x80/0x80
Oct 29 13:55:57 ws091 kernel: [201305.342882] ? __switch_to_asm+0x40/0x70
Oct 29 13:55:57 ws091 kernel: [201305.342890] ? lock_timer_base+0x75/0xa0
Oct 29 13:55:57 ws091 kernel: [201305.342895] kjournald2+0xc8/0x250
Oct 29 13:55:57 ws091 kernel: [201305.342897] ? kjournald2+0xc8/0x250
Oct 29 13:55:57 ws091 kernel: [201305.342899] ? wait_woken+0x80/0x80
Oct 29 13:55:57 ws091 kernel: [201305.342905] kthread+0x105/0x140
Oct 29 13:55:57 ws091 kernel: [201305.342907] ? commit_timeout+0x20/0x20
Oct 29 13:55:57 ws091 kernel: [201305.342909] ?
kthread_destroy_worker+0x50/0x50
Oct 29 13:55:57 ws091 kernel: [201305.342911] ret_from_fork+0x35/0x40
Oct 29 13:55:57 ws091 kernel: [201305.343058] INFO: task kworker/u112:1:45667
blocked for more than 120 seconds.
Oct 29 13:55:57 ws091 kernel: [201305.344520] Not tainted
4.15.0-38-generic #41~16.04.1-Ubuntu
Oct 29 13:55:58 ws091 kernel: [201305.362862] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Oct 29 13:55:58 ws091 kernel: [201305.376988] kworker/u112:1 D 0 45667
2 0x80000000
Oct 29 13:55:58 ws091 kernel: [201305.377000] Workqueue: writeback wb_workfn
(flush-252:32)
Oct 29 13:55:58 ws091 kernel: [201305.377002] Call Trace:
Oct 29 13:55:58 ws091 kernel: [201305.377007] __schedule+0x3d6/0x8b0
Oct 29 13:55:58 ws091 kernel: [201305.377016] ?
blk_mq_sched_insert_requests+0x7a/0x80
Oct 29 13:55:58 ws091 kernel: [201305.377017] schedule+0x36/0x80
Oct 29 13:55:58 ws091 kernel: [201305.377026] wait_transaction_locked+0x8a/0xd0
Oct 29 13:55:58 ws091 kernel: [201305.377029] ? wait_woken+0x80/0x80
Oct 29 13:55:58 ws091 kernel: [201305.377031]
add_transaction_credits+0x1c1/0x2a0
Oct 29 13:55:58 ws091 kernel: [201305.377034] ? blk_mq_make_request+0x3ba/0x590
Oct 29 13:55:58 ws091 kernel: [201305.377036] start_this_handle+0x103/0x400
Oct 29 13:55:58 ws091 kernel: [201305.377038] ? _cond_resched+0x1a/0x50
Oct 29 13:55:58 ws091 kernel: [201305.377045] ? kmem_cache_alloc+0x10f/0x1c0
Oct 29 13:55:58 ws091 kernel: [201305.377047] jbd2__journal_start+0xdb/0x1f0
Oct 29 13:55:58 ws091 kernel: [201305.377053] ? ext4_writepages+0x533/0xe40
Oct 29 13:55:58 ws091 kernel: [201305.377060]
__ext4_journal_start_sb+0x6d/0x120
Oct 29 13:55:58 ws091 kernel: [201305.377067] ext4_writepages+0x533/0xe40
Oct 29 13:55:58 ws091 kernel: [201305.377080] do_writepages+0x1f/0x70
Oct 29 13:55:58 ws091 kernel: [201305.377087] ? do_writepages+0x1f/0x70
Oct 29 13:55:58 ws091 kernel: [201305.377114]
__writeback_single_inode+0x45/0x340
Oct 29 13:55:58 ws091 kernel: [201305.377116] writeback_sb_inodes+0x26a/0x590
Oct 29 13:55:58 ws091 kernel: [201305.377118] __writeback_inodes_wb+0x92/0xc0
Oct 29 13:55:58 ws091 kernel: [201305.377120] wb_writeback+0x274/0x330
Oct 29 13:55:58 ws091 kernel: [201305.377125] ? cpumask_next+0x1b/0x20
Oct 29 13:55:58 ws091 kernel: [201305.377126] wb_workfn+0x369/0x460
Oct 29 13:55:58 ws091 kernel: [201305.377128] ? wb_workfn+0x369/0x460
Oct 29 13:55:58 ws091 kernel: [201305.377131] process_one_work+0x14d/0x410
Oct 29 13:55:58 ws091 kernel: [201305.377133] worker_thread+0x4b/0x460
Oct 29 13:55:58 ws091 kernel: [201305.377135] kthread+0x105/0x140
Oct 29 13:55:58 ws091 kernel: [201305.377137] ? process_one_work+0x410/0x410
Oct 29 13:55:58 ws091 kernel: [201305.377139] ?
kthread_destroy_worker+0x50/0x50
Oct 29 13:55:58 ws091 kernel: [201305.377141] ret_from_fork+0x35/0x40
Oct 29 13:56:16 ws091 kernel: [201313.402918] INFO: rcu_sched detected stalls
on CPUs/tasks:
Oct 29 13:56:16 ws091 kernel: [201313.445035] 30-...0: (1 GPs behind)
idle=83e/140000000000000/0 softirq=294262/294263 fqs=4910
Oct 29 13:56:16 ws091 kernel: [201313.446659] (detected by 1, t=60098
jiffies, g=3090541, c=3090540, q=27661)
Oct 29 13:56:16 ws091 kernel: [201313.448004] Sending NMI from CPU 1 to CPUs 30:
Oct 29 13:56:16 ws091 kernel: [201323.370360] rcu_sched kthread starved for
51698 jiffies! g3090541 c3090540 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x200 ->cpu=45
Oct 29 13:56:16 ws091 kernel: [201323.374460] rcu_sched R 0 8
2 0x80000000
Oct 29 13:56:16 ws091 kernel: [201323.374463] Call Trace:
Oct 29 13:56:16 ws091 kernel: [201323.374472] __schedule+0x3d6/0x8b0
Oct 29 13:56:16 ws091 kernel: [201323.374474] schedule+0x36/0x80
Oct 29 13:56:16 ws091 kernel: [201323.374477] schedule_timeout+0x162/0x370
Oct 29 13:56:16 ws091 kernel: [201323.374480] ?
__next_timer_interrupt+0xe0/0xe0
Oct 29 13:56:16 ws091 kernel: [201323.374484] rcu_gp_kthread+0x5b4/0x960
Oct 29 13:56:16 ws091 kernel: [201323.374488] kthread+0x105/0x140
Oct 29 13:56:16 ws091 kernel: [201323.374490] ? rcu_barrier_sched+0x10/0x10
Oct 29 13:56:16 ws091 kernel: [201323.374491] ?
kthread_destroy_worker+0x50/0x50
Oct 29 13:56:16 ws091 kernel: [201323.374493] ret_from_fork+0x35/0x40
Oct 29 13:57:58 ws091 kernel: [201426.098277] INFO: task jbd2/vdc1-8:1412
blocked for more than 120 seconds.
Oct 29 13:57:58 ws091 kernel: [201426.107666] Not tainted
4.15.0-38-generic #41~16.04.1-Ubuntu
Oct 29 13:57:58 ws091 kernel: [201426.110161] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Oct 29 13:57:58 ws091 kernel: [201426.113093] jbd2/vdc1-8 D 0 1412
2 0x80000000
Oct 29 13:57:58 ws091 kernel: [201426.113099] Call Trace:
Oct 29 13:57:58 ws091 kernel: [201426.113115] __schedule+0x3d6/0x8b0
Oct 29 13:57:58 ws091 kernel: [201426.113119] schedule+0x36/0x80
Oct 29 13:57:58 ws091 kernel: [201426.113126]
jbd2_journal_commit_transaction+0x241/0x1760
Oct 29 13:57:58 ws091 kernel: [201426.113133] ? __switch_to_asm+0x34/0x70
Oct 29 13:57:58 ws091 kernel: [201426.113136] ? __switch_to_asm+0x40/0x70
Oct 29 13:57:58 ws091 kernel: [201426.113140] ? __switch_to_asm+0x34/0x70
Oct 29 13:57:58 ws091 kernel: [201426.113143] ? __switch_to_asm+0x40/0x70
Oct 29 13:57:58 ws091 kernel: [201426.113146] ? __switch_to_asm+0x34/0x70
Oct 29 13:57:58 ws091 kernel: [201426.113149] ? __switch_to_asm+0x40/0x70
Oct 29 13:57:58 ws091 kernel: [201426.113153] ? __switch_to_asm+0x40/0x70
Oct 29 13:57:58 ws091 kernel: [201426.113156] ? __switch_to_asm+0x34/0x70
Oct 29 13:57:58 ws091 kernel: [201426.113159] ? __switch_to_asm+0x34/0x70
Oct 29 13:57:58 ws091 kernel: [201426.113163] ? __switch_to_asm+0x40/0x70
Oct 29 13:57:58 ws091 kernel: [201426.113166] ? __switch_to_asm+0x40/0x70
Oct 29 13:57:58 ws091 kernel: [201426.113174] ? wait_woken+0x80/0x80
Oct 29 13:57:58 ws091 kernel: [201426.113191] ? __switch_to_asm+0x40/0x70
Oct 29 13:57:58 ws091 kernel: [201426.113202] ? lock_timer_base+0x75/0xa0
Oct 29 13:57:58 ws091 kernel: [201426.113209] kjournald2+0xc8/0x250
Oct 29 13:57:58 ws091 kernel: [201426.113212] ? kjournald2+0xc8/0x250
Oct 29 13:57:58 ws091 kernel: [201426.113215] ? wait_woken+0x80/0x80
Oct 29 13:57:58 ws091 kernel: [201426.113223] kthread+0x105/0x140
Oct 29 13:57:58 ws091 kernel: [201426.113226] ? commit_timeout+0x20/0x20
Oct 29 13:57:58 ws091 kernel: [201426.113230] ?
kthread_destroy_worker+0x50/0x50
Oct 29 13:57:58 ws091 kernel: [201426.113234] ret_from_fork+0x35/0x40
Oct 29 13:57:58 ws091 kernel: [201426.113343] INFO: task kworker/u112:1:45667
blocked for more than 120 seconds.
Oct 29 13:57:58 ws091 kernel: [201426.115925] Not tainted
4.15.0-38-generic #41~16.04.1-Ubuntu
Oct 29 13:57:58 ws091 kernel: [201426.118507] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Oct 29 13:57:58 ws091 kernel: [201426.121226] kworker/u112:1 D 0 45667
2 0x80000000
Oct 29 13:57:58 ws091 kernel: [201426.121240] Workqueue: writeback wb_workfn
(flush-252:32)
Oct 29 13:57:58 ws091 kernel: [201426.121243] Call Trace:
Oct 29 13:57:58 ws091 kernel: [201426.121249] __schedule+0x3d6/0x8b0
Oct 29 13:57:58 ws091 kernel: [201426.121257] ?
blk_mq_sched_insert_requests+0x7a/0x80
Oct 29 13:57:58 ws091 kernel: [201426.121261] schedule+0x36/0x80
Oct 29 13:57:58 ws091 kernel: [201426.121270] wait_transaction_locked+0x8a/0xd0
Oct 29 13:57:58 ws091 kernel: [201426.121274] ? wait_woken+0x80/0x80
Oct 29 13:57:58 ws091 kernel: [201426.121278]
add_transaction_credits+0x1c1/0x2a0
Oct 29 13:57:58 ws091 kernel: [201426.121282] ? blk_mq_make_request+0x3ba/0x590
Oct 29 13:57:58 ws091 kernel: [201426.121286] start_this_handle+0x103/0x400
Oct 29 13:57:58 ws091 kernel: [201426.121290] ? _cond_resched+0x1a/0x50
Oct 29 13:57:58 ws091 kernel: [201426.121297] ? kmem_cache_alloc+0x10f/0x1c0
Oct 29 13:57:58 ws091 kernel: [201426.121301] jbd2__journal_start+0xdb/0x1f0
Oct 29 13:57:58 ws091 kernel: [201426.121308] ? ext4_writepages+0x533/0xe40
Oct 29 13:57:58 ws091 kernel: [201426.121315]
__ext4_journal_start_sb+0x6d/0x120
Oct 29 13:57:58 ws091 kernel: [201426.121319] ext4_writepages+0x533/0xe40
Oct 29 13:57:58 ws091 kernel: [201426.121329] do_writepages+0x1f/0x70
Oct 29 13:57:58 ws091 kernel: [201426.121332] ? do_writepages+0x1f/0x70
Oct 29 13:57:58 ws091 kernel: [201426.121336]
__writeback_single_inode+0x45/0x340
Oct 29 13:57:58 ws091 kernel: [201426.121339] writeback_sb_inodes+0x26a/0x590
Oct 29 13:57:58 ws091 kernel: [201426.121344] __writeback_inodes_wb+0x92/0xc0
Oct 29 13:57:58 ws091 kernel: [201426.121347] wb_writeback+0x274/0x330
Oct 29 13:57:58 ws091 kernel: [201426.121352] ? cpumask_next+0x1b/0x20
Oct 29 13:57:58 ws091 kernel: [201426.121355] wb_workfn+0x369/0x460
Oct 29 13:57:58 ws091 kernel: [201426.121358] ? wb_workfn+0x369/0x460
Oct 29 13:57:58 ws091 kernel: [201426.121363] process_one_work+0x14d/0x410
Oct 29 13:57:58 ws091 kernel: [201426.121366] worker_thread+0x4b/0x460
Oct 29 13:57:58 ws091 kernel: [201426.121370] kthread+0x105/0x140
Oct 29 13:57:58 ws091 kernel: [201426.121372] ? process_one_work+0x410/0x410
Oct 29 13:57:58 ws091 kernel: [201426.121376] ?
kthread_destroy_worker+0x50/0x50
Oct 29 13:57:58 ws091 kernel: [201426.121380] ret_from_fork+0x35/0x40
Oct 29 13:57:58 ws091 kernel: [201426.121390] INFO: task redis-server:57001
blocked for more than 120 seconds.
Oct 29 13:57:58 ws091 kernel: [201426.123886] Not tainted
4.15.0-38-generic #41~16.04.1-Ubuntu
Oct 29 13:57:58 ws091 kernel: [201426.125471] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Oct 29 13:57:58 ws091 kernel: [201426.127067] redis-server D 0 57001
2236 0x00000000
Oct 29 13:57:58 ws091 kernel: [201426.127070] Call Trace:
Oct 29 13:57:58 ws091 kernel: [201426.127076] __schedule+0x3d6/0x8b0
Oct 29 13:57:58 ws091 kernel: [201426.127078] schedule+0x36/0x80
Oct 29 13:57:58 ws091 kernel: [201426.127082] wait_transaction_locked+0x8a/0xd0
Oct 29 13:57:58 ws091 kernel: [201426.127085] ? wait_woken+0x80/0x80
Oct 29 13:57:58 ws091 kernel: [201426.127089]
add_transaction_credits+0x1c1/0x2a0
Oct 29 13:57:58 ws091 kernel: [201426.127093] ?
radix_tree_lookup_slot+0x22/0x50
Oct 29 13:57:58 ws091 kernel: [201426.127099] ? find_get_entry+0x1e/0x110
Oct 29 13:57:58 ws091 kernel: [201426.127102] start_this_handle+0x103/0x400
Oct 29 13:57:58 ws091 kernel: [201426.127104] ? _cond_resched+0x1a/0x50
Oct 29 13:57:58 ws091 kernel: [201426.127107] ? kmem_cache_alloc+0x10f/0x1c0
Oct 29 13:57:58 ws091 kernel: [201426.127110] jbd2__journal_start+0xdb/0x1f0
Oct 29 13:57:58 ws091 kernel: [201426.127113] ? __ext4_new_inode+0x747/0x13e0
Oct 29 13:57:58 ws091 kernel: [201426.127116]
__ext4_journal_start_sb+0x6d/0x120
Oct 29 13:57:58 ws091 kernel: [201426.127119] __ext4_new_inode+0x747/0x13e0
Oct 29 13:57:58 ws091 kernel: [201426.127123] ext4_create+0x112/0x1b0
Oct 29 13:57:58 ws091 kernel: [201426.127130] path_openat+0x12e6/0x13f0
Oct 29 13:57:58 ws091 kernel: [201426.127142] do_filp_open+0x99/0x110
Oct 29 13:57:58 ws091 kernel: [201426.127149] ? __check_object_size+0xfc/0x1a0
Oct 29 13:57:58 ws091 kernel: [201426.127163] ? __alloc_fd+0x46/0x170
Oct 29 13:57:58 ws091 kernel: [201426.127172] do_sys_open+0x12d/0x290
Oct 29 13:57:58 ws091 kernel: [201426.127182] ? do_sys_open+0x12d/0x290
Oct 29 13:57:58 ws091 kernel: [201426.127198] SyS_open+0x1e/0x20
Oct 29 13:57:58 ws091 kernel: [201426.127212] do_syscall_64+0x73/0x130
Oct 29 13:57:58 ws091 kernel: [201426.127221]
entry_SYSCALL_64_after_hwframe+0x3d/0xa2
Oct 29 13:57:58 ws091 kernel: [201426.127231] RIP: 0033:0x7f2c7a09f05d
Oct 29 13:57:58 ws091 kernel: [201426.127234] RSP: 002b:00007ffd4f460e60
EFLAGS: 00000293 ORIG_RAX: 0000000000000002
Oct 29 13:57:58 ws091 kernel: [201426.127246] RAX: ffffffffffffffda RBX:
00007f2b899ccc00 RCX: 00007f2c7a09f05d
Oct 29 13:57:58 ws091 kernel: [201426.127250] RDX: 00000000000001b6 RSI:
0000000000000241 RDI: 00007ffd4f460fb0
Oct 29 13:57:58 ws091 kernel: [201426.127256] RBP: 00007ffd4f460fb0 R08:
0000000000000004 R09: 0000000000000001
Oct 29 13:57:58 ws091 kernel: [201426.127259] R10: 0000000000000240 R11:
0000000000000293 R12: 0000559b5a3c52a2
Oct 29 13:57:58 ws091 kernel: [201426.127264] R13: 0000000000000001 R14:
00007f2c794101f0 R15: 0000000000000001
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
--
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https://bugs.launchpad.net/bugs/1800509
Title:
unable to handle kernel NULL pointer dereference at 0000000000000007
Status in linux package in Ubuntu:
Confirmed
Bug description:
```Oct 29 13:51:25 vs09 kernel: [201179.645520] BUG: unable to handle kernel
NULL pointer dereference at 0000000000000007
Oct 29 13:51:25 vs09 kernel: [201179.645601] IP: split_swap_cluster+0x4f/0x70
Oct 29 13:51:25 vs09 kernel: [201179.645633] PGD 0 P4D 0
Oct 29 13:51:25 vs09 kernel: [201179.645660] Oops: 0002 [#1] SMP PTI
Oct 29 13:51:25 vs09 kernel: [201179.645689] Modules linked in: vhost_net
vhost tap xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4
iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack
nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp ebtable_filter ebtables
ip6table_filter ip6_tables iptable_filter ip_tables x_tables rpcsec_gss_krb5
auth_rpcgss nfsv4 nfs lockd grace fscache intel_rapl sb_edac
x86_pkg_temp_thermal intel_powerclamp coretemp intel_cstate ipmi_ssif joydev
input_leds intel_rapl_perf bridge stp llc mei_me lpc_ich mei ioatdma shpchp
ipmi_si ipmi_devintf ipmi_msghandler acpi_power_meter acpi_pad mac_hid
kvm_intel kvm irqbypass ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp
libiscsi_tcp libiscsi scsi_transport_iscsi sunrpc autofs4 btrfs zstd_compress
raid10 raid456 async_raid6_recov
Oct 29 13:51:25 vs09 kernel: [201179.646180] async_memcpy async_pq async_xor
async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ast
crct10dif_pclmul hid_generic crc32_pclmul ttm ghash_clmulni_intel pcbc
drm_kms_helper usbhid syscopyarea igb sysfillrect aesni_intel sysimgblt dca
aes_x86_64 crypto_simd fb_sys_fops glue_helper i2c_algo_bit ahci ptp drm
mxm_wmi hid cryptd libahci pps_core wmi
Oct 29 13:51:25 vs09 kernel: [201179.646418] CPU: 15 PID: 4321 Comm:
qemu-system-x86 Not tainted 4.15.0-38-generic #41~16.04.1-Ubuntu
Oct 29 13:51:25 vs09 kernel: [201179.646478] Hardware name: Supermicro
SYS-6028R-TR/X10DRi, BIOS 2.1 09/13/2016
Oct 29 13:51:25 vs09 kernel: [201179.646531] RIP:
0010:split_swap_cluster+0x4f/0x70
Oct 29 13:51:25 vs09 kernel: [201179.646567] RSP: 0018:ffffa9c9f77e3398
EFLAGS: 00010246
Oct 29 13:51:25 vs09 kernel: [201179.646606] RAX: 0000000000000000 RBX:
0000000000064566 RCX: 0000000000064566
Oct 29 13:51:25 vs09 kernel: [201179.646655] RDX: ffffa9c9a0001000 RSI:
0000000005cc5fff RDI: 0000000000064566
Oct 29 13:51:25 vs09 kernel: [201179.646703] RBP: ffffa9c9f77e33a0 R08:
0000000000000001 R09: ffff9140bffd4d00
Oct 29 13:51:25 vs09 kernel: [201179.646752] R10: ffff9140bffd4000 R11:
0000000000000001 R12: ffffe5fdb3178000
Oct 29 13:51:25 vs09 kernel: [201179.646800] R13: ffffe5fdb3178080 R14:
ffffe5fdb3180000 R15: ffffe5fdb3178040
Oct 29 13:51:25 vs09 kernel: [201179.646850] FS: 00007fb2a27fc700(0000)
GS:ffff913fbee40000(0000) knlGS:0000000000000000
Oct 29 13:51:25 vs09 kernel: [201179.646905] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Oct 29 13:51:25 vs09 kernel: [201179.646946] CR2: 0000000000000007 CR3:
0000003f691b4006 CR4: 00000000003626e0
Oct 29 13:51:25 vs09 kernel: [201179.646995] DR0: 0000000000000000 DR1:
0000000000000000 DR2: 0000000000000000
Oct 29 13:51:25 vs09 kernel: [201179.647043] DR3: 0000000000000000 DR6:
00000000fffe0ff0 DR7: 0000000000000400
Oct 29 13:51:25 vs09 kernel: [201179.647091] Call Trace:
Oct 29 13:51:25 vs09 kernel: [201179.647119]
split_huge_page_to_list+0x76e/0x7f0
Oct 29 13:51:25 vs09 kernel: [201179.647156] deferred_split_scan+0x177/0x2d0
Oct 29 13:51:25 vs09 kernel: [201179.647191] shrink_slab.part.50+0x20b/0x440
Oct 29 13:51:25 vs09 kernel: [201179.647226] shrink_node+0x2fc/0x310
Oct 29 13:51:25 vs09 kernel: [201179.647257] do_try_to_free_pages+0xee/0x360
Oct 29 13:51:25 vs09 kernel: [201179.647290] try_to_free_pages+0xf1/0x1c0
Oct 29 13:51:25 vs09 kernel: [201179.647324]
__alloc_pages_slowpath+0x405/0xec0
Oct 29 13:51:25 vs09 kernel: [201179.647362]
__alloc_pages_nodemask+0x265/0x280
Oct 29 13:51:25 vs09 kernel: [201179.647399] alloc_pages_vma+0x165/0x1e0
Oct 29 13:51:25 vs09 kernel: [201179.647431]
do_huge_pmd_anonymous_page+0x167/0x710
Oct 29 13:51:25 vs09 kernel: [201179.647469] __handle_mm_fault+0xb1d/0x11e0
Oct 29 13:51:25 vs09 kernel: [201179.647504] handle_mm_fault+0xcc/0x1c0
Oct 29 13:51:25 vs09 kernel: [201179.647535] __get_user_pages+0x11d/0x6d0
Oct 29 13:51:25 vs09 kernel: [201179.647568] get_user_pages+0x42/0x50
Oct 29 13:51:25 vs09 kernel: [201179.647627]
__gfn_to_pfn_memslot+0x18b/0x3b0 [kvm]
Oct 29 13:51:25 vs09 kernel: [201179.647691] try_async_pf+0x66/0x220 [kvm]
Oct 29 13:51:25 vs09 kernel: [201179.649238] tdp_page_fault+0x12d/0x290 [kvm]
Oct 29 13:51:25 vs09 kernel: [201179.650766] ? vmexit_fill_RSB+0x10/0x40
[kvm_intel]
Oct 29 13:51:25 vs09 kernel: [201179.652323] kvm_mmu_page_fault+0x62/0x170
[kvm]
Oct 29 13:51:25 vs09 kernel: [201179.653835] handle_ept_violation+0xae/0x140
[kvm_intel]
Oct 29 13:51:25 vs09 kernel: [201179.655337] vmx_handle_exit+0xb3/0xcd0
[kvm_intel]
Oct 29 13:51:25 vs09 kernel: [201179.656844] ? vmx_vcpu_run+0x418/0x5e0
[kvm_intel]
Oct 29 13:51:25 vs09 kernel: [201179.658374] vcpu_enter_guest+0x451/0x1270
[kvm]
Oct 29 13:51:25 vs09 kernel: [201179.659869]
kvm_arch_vcpu_ioctl_run+0x270/0x3d0 [kvm]
Oct 29 13:51:25 vs09 kernel: [201179.661323] ?
kvm_arch_vcpu_ioctl_run+0x270/0x3d0 [kvm]
Oct 29 13:51:25 vs09 kernel: [201179.662743] kvm_vcpu_ioctl+0x33a/0x610 [kvm]
Oct 29 13:51:25 vs09 kernel: [201179.664105] do_vfs_ioctl+0xa4/0x600
Oct 29 13:51:25 vs09 kernel: [201179.665415] ? _cond_resched+0x1a/0x50
Oct 29 13:51:25 vs09 kernel: [201179.666679] SyS_ioctl+0x79/0x90
Oct 29 13:51:25 vs09 kernel: [201179.667893] ?
exit_to_usermode_loop+0xa5/0xd0
Oct 29 13:51:25 vs09 kernel: [201179.669072] do_syscall_64+0x73/0x130
Oct 29 13:51:25 vs09 kernel: [201179.670201]
entry_SYSCALL_64_after_hwframe+0x3d/0xa2
Oct 29 13:51:25 vs09 kernel: [201179.671298] RIP: 0033:0x7fb36a80bf47
Oct 29 13:51:25 vs09 kernel: [201179.672350] RSP: 002b:00007fb2a27fb978
EFLAGS: 00000246 ORIG_RAX: 0000000000000010
Oct 29 13:51:25 vs09 kernel: [201179.673419] RAX: ffffffffffffffda RBX:
00007fb36fa46001 RCX: 00007fb36a80bf47
Oct 29 13:51:25 vs09 kernel: [201179.674484] RDX: 0000000000000000 RSI:
000000000000ae80 RDI: 0000000000000049
Oct 29 13:51:25 vs09 kernel: [201179.675555] RBP: 0000000000000001 R08:
00005610fcebe8f0 R09: 0000000000000001
Oct 29 13:51:25 vs09 kernel: [201179.676609] R10: 0000000000000000 R11:
0000000000000246 R12: 0000000000000000
Oct 29 13:51:25 vs09 kernel: [201179.677662] R13: 00005610fcea8f80 R14:
00007fb36fa45000 R15: 00005610ffbb3c40
Oct 29 13:51:25 vs09 kernel: [201179.678718] Code: c1 e3 07 48 c1 eb 10 48 8d
1c d8 48 89 df e8 d9 68 77 00 80 63 07 fb 48 85 db 74 17 48 89 df c6 07 00 0f
1f 40 00 31 c0 5b 5d c3 <80> 24 25 07 00 00 00 fb 31 c0 5b 5d c3 b8 f0 ff ff ff
eb e9 0f
Oct 29 13:51:25 vs09 kernel: [201179.681026] RIP:
split_swap_cluster+0x4f/0x70 RSP: ffffa9c9f77e3398
Oct 29 13:51:25 vs09 kernel: [201179.682157] CR2: 0000000000000007
Oct 29 13:51:25 vs09 kernel: [201179.683269] ---[ end trace 79264fc2c2b01079
]---
---
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Oct 29 14:54 seq
crw-rw---- 1 root audio 116, 33 Oct 29 14:54 timer
AplayDevices: Error: [Errno 2] No such file or directory
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
DistroRelease: Ubuntu 16.04
HibernationDevice: RESUME=/dev/mapper/vs09--vg-swap
InstallationDate: Installed on 2017-01-25 (642 days ago)
InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64
(20160719)
IwConfig: Error: [Errno 2] No such file or directory
MachineType: Supermicro SYS-6028R-TR
Package: linux (not installed)
PciMultimedia:
ProcFB: 0 astdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-38-generic
root=/dev/mapper/hostname--vg-root ro
ProcVersionSignature: Ubuntu 4.15.0-38.41~16.04.1-generic 4.15.18
RelatedPackageVersions:
linux-restricted-modules-4.15.0-38-generic N/A
linux-backports-modules-4.15.0-38-generic N/A
linux-firmware 1.157.20
RfKill: Error: [Errno 2] No such file or directory
Tags: xenial
Uname: Linux 4.15.0-38-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
WifiSyslog:
_MarkForUpload: True
dmi.bios.date: 09/13/2016
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2.1
dmi.board.asset.tag: Default string
dmi.board.name: X10DRi
dmi.board.vendor: Supermicro
dmi.board.version: 1.02B
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 1
dmi.chassis.vendor: Supermicro
dmi.chassis.version: Default string
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr2.1:bd09/13/2016:svnSupermicro:pnSYS-6028R-TR:pvr123456789:rvnSupermicro:rnX10DRi:rvr1.02B:cvnSupermicro:ct1:cvrDefaultstring:
dmi.product.family: SMC X10
dmi.product.name: SYS-6028R-TR
dmi.product.version: 123456789
dmi.sys.vendor: Supermicro
---
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Oct 29 14:54 seq
crw-rw---- 1 root audio 116, 33 Oct 29 14:54 timer
AplayDevices: Error: [Errno 2] No such file or directory
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
DistroRelease: Ubuntu 16.04
HibernationDevice: RESUME=/dev/mapper/vs09--vg-swap
InstallationDate: Installed on 2017-01-25 (642 days ago)
InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64
(20160719)
IwConfig: Error: [Errno 2] No such file or directory
MachineType: Supermicro SYS-6028R-TR
Package: linux (not installed)
PciMultimedia:
ProcFB: 0 astdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-38-generic
root=/dev/mapper/hostname--vg-root ro
ProcVersionSignature: Ubuntu 4.15.0-38.41~16.04.1-generic 4.15.18
RelatedPackageVersions:
linux-restricted-modules-4.15.0-38-generic N/A
linux-backports-modules-4.15.0-38-generic N/A
linux-firmware 1.157.20
RfKill: Error: [Errno 2] No such file or directory
Tags: xenial
Uname: Linux 4.15.0-38-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
WifiSyslog:
_MarkForUpload: True
dmi.bios.date: 09/13/2016
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2.1
dmi.board.asset.tag: Default string
dmi.board.name: X10DRi
dmi.board.vendor: Supermicro
dmi.board.version: 1.02B
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 1
dmi.chassis.vendor: Supermicro
dmi.chassis.version: Default string
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr2.1:bd09/13/2016:svnSupermicro:pnSYS-6028R-TR:pvr123456789:rvnSupermicro:rnX10DRi:rvr1.02B:cvnSupermicro:ct1:cvrDefaultstring:
dmi.product.family: SMC X10
dmi.product.name: SYS-6028R-TR
dmi.product.version: 123456789
dmi.sys.vendor: Supermicro
---
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Oct 29 14:54 seq
crw-rw---- 1 root audio 116, 33 Oct 29 14:54 timer
AplayDevices: Error: [Errno 2] No such file or directory
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
DistroRelease: Ubuntu 16.04
HibernationDevice: RESUME=/dev/mapper/vs09--vg-swap
InstallationDate: Installed on 2017-01-25 (642 days ago)
InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64
(20160719)
IwConfig: Error: [Errno 2] No such file or directory
MachineType: Supermicro SYS-6028R-TR
Package: linux (not installed)
PciMultimedia:
ProcFB: 0 astdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-38-generic
root=/dev/mapper/hostname--vg-root ro
ProcVersionSignature: Ubuntu 4.15.0-38.41~16.04.1-generic 4.15.18
RelatedPackageVersions:
linux-restricted-modules-4.15.0-38-generic N/A
linux-backports-modules-4.15.0-38-generic N/A
linux-firmware 1.157.20
RfKill: Error: [Errno 2] No such file or directory
Tags: xenial
Uname: Linux 4.15.0-38-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
WifiSyslog:
_MarkForUpload: True
dmi.bios.date: 09/13/2016
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2.1
dmi.board.asset.tag: Default string
dmi.board.name: X10DRi
dmi.board.vendor: Supermicro
dmi.board.version: 1.02B
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 1
dmi.chassis.vendor: Supermicro
dmi.chassis.version: Default string
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr2.1:bd09/13/2016:svnSupermicro:pnSYS-6028R-TR:pvr123456789:rvnSupermicro:rnX10DRi:rvr1.02B:cvnSupermicro:ct1:cvrDefaultstring:
dmi.product.family: SMC X10
dmi.product.name: SYS-6028R-TR
dmi.product.version: 123456789
dmi.sys.vendor: Supermicro
---
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Oct 29 14:54 seq
crw-rw---- 1 root audio 116, 33 Oct 29 14:54 timer
AplayDevices: Error: [Errno 2] No such file or directory
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
DistroRelease: Ubuntu 16.04
HibernationDevice: RESUME=/dev/mapper/vs09--vg-swap
InstallationDate: Installed on 2017-01-25 (642 days ago)
InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64
(20160719)
IwConfig: Error: [Errno 2] No such file or directory
MachineType: Supermicro SYS-6028R-TR
Package: linux (not installed)
PciMultimedia:
ProcFB: 0 astdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-38-generic
root=/dev/mapper/hostname--vg-root ro
ProcVersionSignature: Ubuntu 4.15.0-38.41~16.04.1-generic 4.15.18
RelatedPackageVersions:
linux-restricted-modules-4.15.0-38-generic N/A
linux-backports-modules-4.15.0-38-generic N/A
linux-firmware 1.157.20
RfKill: Error: [Errno 2] No such file or directory
Tags: xenial
Uname: Linux 4.15.0-38-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
WifiSyslog:
_MarkForUpload: True
dmi.bios.date: 09/13/2016
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2.1
dmi.board.asset.tag: Default string
dmi.board.name: X10DRi
dmi.board.vendor: Supermicro
dmi.board.version: 1.02B
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 1
dmi.chassis.vendor: Supermicro
dmi.chassis.version: Default string
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr2.1:bd09/13/2016:svnSupermicro:pnSYS-6028R-TR:pvr123456789:rvnSupermicro:rnX10DRi:rvr1.02B:cvnSupermicro:ct1:cvrDefaultstring:
dmi.product.family: SMC X10
dmi.product.name: SYS-6028R-TR
dmi.product.version: 123456789
dmi.sys.vendor: Supermicro
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