INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.45' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 25.423437] IPVS: ftp: loaded support on port[0] = 21 [ 25.459017] kasan: CONFIG_KASAN_INLINE enabled [ 25.459199] kasan: CONFIG_KASAN_INLINE enabled [ 25.463620] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 25.468177] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 25.475503] general protection fault: 0000 [#1] SMP KASAN [ 25.488329] Dumping ftrace buffer: [ 25.491834] (ftrace buffer empty) [ 25.495511] Modules linked in: [ 25.498673] CPU: 0 PID: 164097 Comm:  Not tainted 4.16.0-rc7+ #368 [ 25.505215] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.514540] RIP: 0010:account_system_index_time+0xdd/0x5e0 [ 25.520131] RSP: 0018:ffff8801db207930 EFLAGS: 00010006 [ 25.525462] RAX: 0002810100028101 RBX: ffff8801b22d0300 RCX: 0000502020005047 [ 25.532702] RDX: dffffc0000000000 RSI: 00000000000f4240 RDI: 0002810100028239 [ 25.539938] RBP: ffff8801db207a10 R08: 0000000000028101 R09: fffffbfff0f6a2bb [ 25.547177] R10: ffff8801db2079e8 R11: fffffbfff0f6a2ba R12: 1ffff1003b640f29 [ 25.554414] R13: 000000000002c5c0 R14: 00000000000f4240 R15: 0000000000000002 [ 25.561655] FS: 00000000019fd880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 25.569848] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.575697] CR2: 0000000000421d60 CR3: 00000001b1963003 CR4: 00000000001606f0 [ 25.582937] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.590174] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.597418] Call Trace: [ 25.599968] [ 25.602092] ? account_guest_time+0x420/0x420 [ 25.606555] ? read_boot_clock64+0x70/0x70 [ 25.610760] ? debug_object_activate+0x301/0x730 [ 25.615484] ? lock_downgrade+0x980/0x980 [ 25.619600] ? lock_downgrade+0x980/0x980 [ 25.623719] account_system_time+0x7f/0xb0 [ 25.627920] account_process_tick+0xd4/0x3e0 [ 25.632295] ? thread_group_cputime+0xef0/0xef0 [ 25.636933] ? get_monotonic_coarse64+0x470/0x470 [ 25.641744] update_process_times+0x23/0x60 [ 25.646039] tick_sched_handle+0x85/0x160 [ 25.650154] tick_sched_timer+0x42/0x120 [ 25.654183] __hrtimer_run_queues+0x39c/0xec0 [ 25.658655] ? tick_sched_do_timer+0xe0/0xe0 [ 25.663035] ? hrtimer_fixup_init+0x70/0x70 [ 25.667328] ? pvclock_read_flags+0x160/0x160 [ 25.671793] ? kvm_clock_get_cycles+0x25/0x30 [ 25.676254] ? ktime_get+0x26f/0x3a0 [ 25.679937] ? kvm_clock_get_cycles+0x25/0x30 [ 25.684401] ? ktime_get_update_offsets_now+0x34a/0x520 [ 25.689733] ? do_timer+0x50/0x50 [ 25.693157] ? native_apic_msr_write+0x5c/0x80 [ 25.697707] ? rcu_idle_enter+0x530/0x530 [ 25.701822] ? lapic_next_event+0x54/0x80 [ 25.705939] ? clockevents_program_event+0x108/0x2e0 [ 25.711009] hrtimer_interrupt+0x2a5/0x6f0 [ 25.715215] smp_apic_timer_interrupt+0x14a/0x700 [ 25.720024] ? smp_call_function_single_interrupt+0x640/0x640 [ 25.725887] ? _raw_spin_lock+0x32/0x40 [ 25.729831] ? _raw_spin_unlock+0x22/0x30 [ 25.733947] ? handle_edge_irq+0x2b4/0x7c0 [ 25.738149] ? task_prio+0x50/0x50 [ 25.741663] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.746474] apic_timer_interrupt+0xf/0x20 [ 25.750676] [ 25.752878] Code: ea 03 80 3c 02 00 0f 85 8b 04 00 00 48 8b 83 f8 06 00 00 48 ba 00 00 00 00 00 fc ff df 48 8d b8 38 01 00 00 48 89 f9 48 c1 e9 03 <0f> b6 14 11 48 89 f9 83 e1 07 38 ca 7f 08 84 d2 0f 85 90 03 00 [ 25.771929] RIP: account_system_index_time+0xdd/0x5e0 RSP: ffff8801db207930 [ 25.778994] [ 25.778996] ====================================================== [ 25.778998] WARNING: possible circular locking dependency detected [ 25.779000] 4.16.0-rc7+ #368 Not tainted [ 25.779002] ------------------------------------------------------ [ 25.779003] rcu_sched/8 is trying to acquire lock: [ 25.779004] ((console_sem).lock){..-.}, at: [<0000000011a525fb>] down_trylock+0x13/0x70 [ 25.779008] [ 25.779010] but task is already holding lock: [ 25.779010] (&rq->lock){-.-.}, at: [<000000004637b5ed>] load_balance+0xb10/0x34c0 [ 25.779015] [ 25.779016] which lock already depends on the new lock. [ 25.779017] [ 25.779018] [ 25.779020] the existing dependency chain (in reverse order) is: [ 25.779020] [ 25.779021] -> #2 (&rq->lock){-.-.}: [ 25.779028] _raw_spin_lock+0x2a/0x40 [ 25.779030] task_fork_fair+0x7a/0x690 [ 25.779031] sched_fork+0x450/0xc10 [ 25.779032] copy_process.part.38+0x17c9/0x4bd0 [ 25.779034] _do_fork+0x1f7/0xf70 [ 25.779035] kernel_thread+0x34/0x40 [ 25.779036] rest_init+0x22/0xf0 [ 25.779038] start_kernel+0x7f1/0x819 [ 25.779039] x86_64_start_reservations+0x2a/0x2c [ 25.779041] x86_64_start_kernel+0x77/0x7a [ 25.779042] secondary_startup_64+0xa5/0xb0 [ 25.779043] [ 25.779043] -> #1 (&p->pi_lock){-.-.}: [ 25.779048] _raw_spin_lock_irqsave+0x96/0xc0 [ 25.779050] try_to_wake_up+0xbc/0x15f0 [ 25.779051] wake_up_process+0x10/0x20 [ 25.779052] __up.isra.0+0x1cc/0x2c0 [ 25.779053] up+0x13b/0x1d0 [ 25.779055] __up_console_sem+0xb2/0x1a0 [ 25.779056] console_unlock+0x5af/0xfb0 [ 25.779057] do_con_write+0x106e/0x1f70 [ 25.779059] con_write+0x25/0xb0 [ 25.779060] n_tty_write+0x5ef/0xec0 [ 25.779061] tty_write+0x3fa/0x840 [ 25.779063] __vfs_write+0xef/0x970 [ 25.779064] vfs_write+0x189/0x510 [ 25.779065] SyS_write+0xef/0x220 [ 25.779066] do_syscall_64+0x281/0x940 [ 25.779068] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 25.779069] [ 25.779070] -> #0 ((console_sem).lock){..-.}: [ 25.779074] lock_acquire+0x1d5/0x580 [ 25.779076] _raw_spin_lock_irqsave+0x96/0xc0 [ 25.779077] down_trylock+0x13/0x70 [ 25.779078] __down_trylock_console_sem+0xa2/0x1e0 [ 25.779080] console_trylock+0x15/0x70 [ 25.779081] vprintk_emit+0x5b5/0xb90 [ 25.779082] vprintk_default+0x28/0x30 [ 25.779084] vprintk_func+0x57/0xc0 [ 25.779085] printk+0xaa/0xca [ 25.779086] kasan_die_handler+0x31/0x3f [ 25.779088] notifier_call_chain+0x136/0x2c0 [ 25.779089] atomic_notifier_call_chain+0x77/0x140 [ 25.779091] notify_die+0x18c/0x280 [ 25.779092] do_general_protection+0x331/0x3e0 [ 25.779094] general_protection+0x25/0x50 [ 25.779095] can_migrate_task+0xe2/0x1c20 [ 25.779096] load_balance+0xdab/0x34c0 [ 25.779098] pick_next_task_fair+0xe03/0x1630 [ 25.779099] __schedule+0x4fc/0x1ec0 [ 25.779100] schedule+0xf5/0x430 [ 25.779102] schedule_timeout+0x118/0x230 [ 25.779103] rcu_gp_kthread+0x9dd/0x18e0 [ 25.779104] kthread+0x33c/0x400 [ 25.779106] ret_from_fork+0x3a/0x50 [ 25.779106] [ 25.779108] other info that might help us debug this: [ 25.779109] [ 25.779110] Chain exists of: [ 25.779110] (console_sem).lock --> &p->pi_lock --> &rq->lock [ 25.779116] [ 25.779117] Possible unsafe locking scenario: [ 25.779118] [ 25.779119] CPU0 CPU1 [ 25.779121] ---- ---- [ 25.779122] lock(&rq->lock); [ 25.779125] lock(&p->pi_lock); [ 25.779128] lock(&rq->lock); [ 25.779130] lock((console_sem).lock); [ 25.779133] [ 25.779134] *** DEADLOCK *** [ 25.779134] [ 25.779136] 3 locks held by rcu_sched/8: [ 25.779136] #0: (rcu_read_lock){....}, at: [<0000000024de6645>] rcu_read_lock+0x0/0x70 [ 25.779141] #1: (&rq->lock){-.-.}, at: [<000000004637b5ed>] load_balance+0xb10/0x34c0 [ 25.779146] #2: (rcu_read_lock){....}, at: [<00000000c60bf25c>] atomic_notifier_call_chain+0x0/0x140 [ 25.779151] [ 25.779152] stack backtrace: [ 25.779154] CPU: 1 PID: 8 Comm: rcu_sched Not tainted 4.16.0-rc7+ #368 [ 25.779157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.779158] Call Trace: [ 25.779159] dump_stack+0x194/0x24d [ 25.779160] ? arch_local_irq_restore+0x53/0x53 [ 25.779162] print_circular_bug.isra.38+0x2cd/0x2dc [ 25.779163] ? save_trace+0xe0/0x2b0 [ 25.779165] __lock_acquire+0x30a8/0x3e00 [ 25.779166] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 25.779168] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 25.779169] ? print_irqtrace_events+0x270/0x270 [ 25.779171] ? __lock_is_held+0xb6/0x140 [ 25.779172] ? trace_hardirqs_off+0x10/0x10 [ 25.779173] ? __lock_acquire+0x664/0x3e00 [ 25.779175] ? rcu_read_lock_sched_held+0x108/0x120 [ 25.779176] ? attach_entity_load_avg+0x52e/0x710 [ 25.779178] ? attach_entity_load_avg+0x52e/0x710 [ 25.779179] ? trace_hardirqs_off+0x10/0x10 [ 25.779180] lock_acquire+0x1d5/0x580 [ 25.779182] ? lock_acquire+0x1d5/0x580 [ 25.779183] ? down_trylock+0x13/0x70 [ 25.779184] ? lock_release+0xa40/0xa40 [ 25.779186] ? vprintk_emit+0x43b/0xb90 [ 25.779187] ? lock_downgrade+0x980/0x980 [ 25.779188] ? kvm_sched_clock_read+0x25/0x40 [ 25.779190] ? sched_clock+0x31/0x40 [ 25.779191] ? sched_clock_cpu+0x1b/0x180 [ 25.779192] ? vprintk_emit+0x5b5/0xb90 [ 25.779194] _raw_spin_lock_irqsave+0x96/0xc0 [ 25.779195] ? down_trylock+0x13/0x70 [ 25.779196] down_trylock+0x13/0x70 [ 25.779197] ? vprintk_emit+0x5b5/0xb90 [ 25.779199] __down_trylock_console_sem+0xa2/0x1e0 [ 25.779200] console_trylock+0x15/0x70 [ 25.779201] vprintk_emit+0x5b5/0xb90 [ 25.779203] ? console_unlock+0xfb0/0xfb0 [ 25.779204] ? print_irqtrace_events+0x270/0x270 [ 25.779205] ? rb_next+0x140/0x140 [ 25.779207] ? __msecs_to_jiffies+0x2b/0x40 [ 25.779208] ? update_group_capacity+0xfc/0xe90 [ 25.779210] ? print_irqtrace_events+0x270/0x270 [ 25.779211] ? __update_idle_core+0x600/0x600 [ 25.779213] ? __lock_acquire+0x664/0x3e00 [ 25.779214] vprintk_default+0x28/0x30 [ 25.779215] vprintk_func+0x57/0xc0 [ 25.779216] printk+0xaa/0xca [ 25.779218] ? show_regs_print_info+0x18/0x18 [ 25.779219] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 25.779220] ? kasan_die_handler+0x25/0x3f [ 25.779222] kasan_die_handler+0x31/0x3f [ 25.779223] notifier_call_chain+0x136/0x2c0 [ 25.779225] ? raw_notifier_chain_unregister+0x1b0/0x1b0 [ 25.779226] ? rcutorture_record_progress+0x10/0x10 [ 25.779228] atomic_notifier_call_chain+0x77/0x140 [ 25.779229] notify_die+0x18c/0x280 [ 25.779231] ? atomic_notifier_call_chain+0x140/0x140 [ 25.779232] ? search_exception_tables+0x47/0x50 [ 25.779234] do_general_protection+0x331/0x3e0 [ 25.779235] general_protection+0x25/0x50 [ 25.779237] RIP: 0010:can_migrate_task+0xe2/0x1c20 [ 25.779238] RSP: 0018:ffff8801d9af6c88 EFLAGS: 00010006 [ 25.779241] RAX: dffffc0000000000 RBX: 0002810100028101 RCX: ffff8801d9af7098 [ 25.779243] RDX: ffff8801d9af6d30 RSI: 000050202000503c RDI: 00028101000281e1 [ 25.779245] RBP: ffff8801d9af6d58 R08: 1ffff1003b35ed9a R09: ffff88021fff8048 [ 25.779247] R10: 0000000000000001 R11: ffff88021fff805d R12: ffff8801b22d0300 [ 25.779249] R13: ffffffff87d5df20 R14: ffff8801b22d0300 R15: ffff8801b22d03f0 [ 25.779251] ? can_migrate_task+0x3fc/0x1c20 [ 25.779252] ? get_rr_interval_fair+0xf0/0xf0 [ 25.779253] ? sched_clock_cpu+0x1b/0x180 [ 25.779255] load_balance+0xdab/0x34c0 [ 25.779256] ? do_raw_spin_trylock+0x190/0x190 [ 25.779257] ? find_busiest_group+0x1c60/0x1c60 [ 25.779259] ? rcu_read_unlock+0x16/0x70 [ 25.779260] ? set_next_entity+0xae0/0xae0 [ 25.779262] ? trace_hardirqs_off+0x10/0x10 [ 25.779263] ? rcu_read_unlock+0x35/0x70 [ 25.779264] ? update_curr+0x46f/0xac0 [ 25.779266] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 25.779267] ? find_held_lock+0x35/0x1d0 [ 25.779268] ? trace_hardirqs_off+0x10/0x10 [ 25.779270] ? pvclock_read_flags+0x160/0x160 [ 25.779271] ? lock_release+0xa40/0xa40 [ 25.779272] ? sched_clock+0x31/0x40 [ 25.779274] ? sched_clock_cpu+0x1b/0x180 [ 25.779275] pick_next_task_fair+0xe03/0x1630 [ 25.779276] ? load_balance+0x34c0/0x34c0 [ 25.779278] ? rcu_read_lock_sched_held+0x108/0x120 [ 25.779279] ? rcu_note_context_switch+0x584/0x710 [ 25.779281] ? trace_hardirqs_off+0x10/0x10 [ 25.779282] ? trace_hardirqs_off+0x10/0x10 [ 25.779284] ? __schedule+0x181/0x1ec0 [ 25.779285] ? pvclock_read_flags+0x160/0x160 [ 25.779286] ? __lock_is_held+0xb6/0x140 [ 25.779288] ? dequeue_task_fair+0x92/0x490 [ 25.779289] ? deactivate_task+0x124/0x330 [ 25.779290] __schedule+0x4fc/0x1ec0 [ 25.779292] ? __sched_text_start+0x8/0x8 [ 25.779293] ? _raw_spin_unlock_irqrestore+0x31/0xc0 [ 25.779295] ? trace_event_raw_event_hrtimer_start+0x380/0x380 [ 25.779296] ? __debug_object_init+0x235/0x1040 [ 25.779298] ? find_held_lock+0x35/0x1d0 [ 25.779299] ? debug_object_fixup+0x30/0x30 [ 25.779301] ? lock_downgrade+0x980/0x980 [ 25.779302] ? lock_release+0xa40/0xa40 [ 25.779303] schedule+0xf5/0x430 [ 25.779304] ? do_raw_spin_trylock+0x190/0x190 [ 25.779306] ? __schedule+0x1ec0/0x1ec0 [ 25.779307] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.779309] ? trace_hardirqs_on+0xd/0x10 [ 25.779310] ? prepare_to_swait+0x18f/0x4f0 [ 25.779311] ? __lockdep_init_map+0xe4/0x650 [ 25.779313] ? lockdep_init_map+0x9/0x10 [ 25.779314] ? init_timer_on_stack_key+0xb7/0xe0 [ 25.779316] schedule_timeout+0x118/0x230 [ 25.779317] ? usleep_range+0x190/0x190 [ 25.779318] ? __next_timer_interrupt+0x150/0x150 [ 25.779320] rcu_gp_kthread+0x9dd/0x18e0 [ 25.779321] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 25.779323] ? rcu_batches_completed_sched+0x10/0x10 [ 25.779324] ? trace_hardirqs_off+0x10/0x10 [ 25.779326] ? select_task_rq_fair+0x2521/0x2910 [ 25.779327] ? find_held_lock+0x35/0x1d0 [ 25.779328] ? finish_task_switch+0x1c1/0x7e0 [ 25.779330] ? lock_downgrade+0x980/0x980 [ 25.779331] ? lock_release+0xa40/0xa40 [ 25.779333] ? rcu_read_lock_sched_held+0x108/0x120 [ 25.779334] ? do_raw_spin_trylock+0x190/0x190 [ 25.779335] ? compat_start_thread+0x80/0x80 [ 25.779337] ? _raw_spin_unlock_irq+0x27/0x70 [ 25.779338] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.779340] ? trace_hardirqs_on+0xd/0x10 [ 25.779341] ? _raw_spin_unlock_irq+0x27/0x70 [ 25.779342] ? finish_task_switch+0x1c1/0x7e0 [ 25.779344] ? finish_task_switch+0x182/0x7e0 [ 25.779345] ? copy_overflow+0x20/0x20 [ 25.779346] ? __schedule+0x903/0x1ec0 [ 25.779348] ? trace_hardirqs_off+0x10/0x10 [ 25.779349] ? find_held_lock+0x35/0x1d0 [ 25.779350] ? find_held_lock+0x35/0x1d0 [ 25.779352] ? complete+0x62/0x80 [ 25.779353] ? __schedule+0x1 [ 25.779355] Lost 10 message(s)! [ 26.812883] ---[ end trace 948581b189460493 ]--- [ 26.812888] general protection fault: 0000 [#2] SMP KASAN [ 26.812896] Dumping ftrace buffer: [ 26.817617] Kernel panic - not syncing: Fatal exception in interrupt [ 26.823125] (ftrace buffer empty) [ 26.836769] Modules linked in: [ 26.839938] CPU: 1 PID: 8 Comm: rcu_sched Tainted: G D 4.16.0-rc7+ #368 [ 26.847871] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.857206] RIP: 0010:can_migrate_task+0xe2/0x1c20 [ 26.862101] RSP: 0018:ffff8801d9af6c88 EFLAGS: 00010006 [ 26.867436] RAX: dffffc0000000000 RBX: 0002810100028101 RCX: ffff8801d9af7098 [ 26.874675] RDX: ffff8801d9af6d30 RSI: 000050202000503c RDI: 00028101000281e1 [ 26.881916] RBP: ffff8801d9af6d58 R08: 1ffff1003b35ed9a R09: ffff88021fff8048 [ 26.889156] R10: 0000000000000001 R11: ffff88021fff805d R12: ffff8801b22d0300 [ 26.896399] R13: ffffffff87d5df20 R14: ffff8801b22d0300 R15: ffff8801b22d03f0 [ 26.903642] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 26.911837] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.917691] CR2: 00007f720c0a9000 CR3: 0000000007a22003 CR4: 00000000001606e0 [ 26.924934] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.932176] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.939418] Call Trace: [ 26.941985] ? get_rr_interval_fair+0xf0/0xf0 [ 26.946450] ? sched_clock_cpu+0x1b/0x180 [ 26.950578] load_balance+0xdab/0x34c0 [ 26.954438] ? do_raw_spin_trylock+0x190/0x190 [ 26.959004] ? find_busiest_group+0x1c60/0x1c60 [ 26.963642] ? rcu_read_unlock+0x16/0x70 [ 26.967687] ? set_next_entity+0xae0/0xae0 [ 26.971899] ? trace_hardirqs_off+0x10/0x10 [ 26.976198] ? rcu_read_unlock+0x35/0x70 [ 26.980231] ? update_curr+0x46f/0xac0 [ 26.984091] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 26.989255] ? find_held_lock+0x35/0x1d0 [ 26.993289] ? trace_hardirqs_off+0x10/0x10 [ 26.997586] ? pvclock_read_flags+0x160/0x160 [ 27.002054] ? lock_release+0xa40/0xa40 [ 27.006004] ? sched_clock+0x31/0x40 [ 27.009687] ? sched_clock_cpu+0x1b/0x180 [ 27.013810] pick_next_task_fair+0xe03/0x1630 [ 27.018284] ? load_balance+0x34c0/0x34c0 [ 27.022409] ? rcu_read_lock_sched_held+0x108/0x120 [ 27.027397] ? rcu_note_context_switch+0x584/0x710 [ 27.032298] ? trace_hardirqs_off+0x10/0x10 [ 27.036589] ? trace_hardirqs_off+0x10/0x10 [ 27.040885] ? __schedule+0x181/0x1ec0 [ 27.044742] ? pvclock_read_flags+0x160/0x160 [ 27.049212] ? __lock_is_held+0xb6/0x140 [ 27.053248] ? dequeue_task_fair+0x92/0x490 [ 27.057544] ? deactivate_task+0x124/0x330 [ 27.061754] __schedule+0x4fc/0x1ec0 [ 27.065445] ? __sched_text_start+0x8/0x8 [ 27.069564] ? _raw_spin_unlock_irqrestore+0x31/0xc0 [ 27.074645] ? trace_event_raw_event_hrtimer_start+0x380/0x380 [ 27.080589] ? __debug_object_init+0x235/0x1040 [ 27.085227] ? find_held_lock+0x35/0x1d0 [ 27.089266] ? debug_object_fixup+0x30/0x30 [ 27.093557] ? lock_downgrade+0x980/0x980 [ 27.097675] ? lock_release+0xa40/0xa40 [ 27.101623] schedule+0xf5/0x430 [ 27.104959] ? do_raw_spin_trylock+0x190/0x190 [ 27.109512] ? __schedule+0x1ec0/0x1ec0 [ 27.113458] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 27.118444] ? trace_hardirqs_on+0xd/0x10 [ 27.122562] ? prepare_to_swait+0x18f/0x4f0 [ 27.126854] ? __lockdep_init_map+0xe4/0x650 [ 27.131232] ? lockdep_init_map+0x9/0x10 [ 27.135264] ? init_timer_on_stack_key+0xb7/0xe0 [ 27.139994] schedule_timeout+0x118/0x230 [ 27.144115] ? usleep_range+0x190/0x190 [ 27.148066] ? __next_timer_interrupt+0x150/0x150 [ 27.152889] rcu_gp_kthread+0x9dd/0x18e0 [ 27.156920] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 27.162092] ? rcu_batches_completed_sched+0x10/0x10 [ 27.167168] ? trace_hardirqs_off+0x10/0x10 [ 27.171461] ? select_task_rq_fair+0x2521/0x2910 [ 27.176195] ? find_held_lock+0x35/0x1d0 [ 27.180233] ? finish_task_switch+0x1c1/0x7e0 [ 27.184698] ? lock_downgrade+0x980/0x980 [ 27.188820] ? lock_release+0xa40/0xa40 [ 27.192767] ? rcu_read_lock_sched_held+0x108/0x120 [ 27.197757] ? do_raw_spin_trylock+0x190/0x190 [ 27.202314] ? compat_start_thread+0x80/0x80 [ 27.206692] ? _raw_spin_unlock_irq+0x27/0x70 [ 27.211158] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 27.216144] ? trace_hardirqs_on+0xd/0x10 [ 27.220263] ? _raw_spin_unlock_irq+0x27/0x70 [ 27.224729] ? finish_task_switch+0x1c1/0x7e0 [ 27.229196] ? finish_task_switch+0x182/0x7e0 [ 27.233662] ? copy_overflow+0x20/0x20 [ 27.237533] ? __schedule+0x903/0x1ec0 [ 27.241403] ? trace_hardirqs_off+0x10/0x10 [ 27.245698] ? find_held_lock+0x35/0x1d0 [ 27.249738] ? find_held_lock+0x35/0x1d0 [ 27.253776] ? complete+0x62/0x80 [ 27.257205] ? __schedule+0x1ec0/0x1ec0 [ 27.261149] ? do_wait_intr_irq+0x3e0/0x3e0 [ 27.265441] ? __lockdep_init_map+0xe4/0x650 [ 27.269821] ? do_raw_spin_trylock+0x190/0x190 [ 27.274378] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 27.279369] ? trace_hardirqs_on+0xd/0x10 [ 27.283492] ? __kthread_parkme+0x176/0x240 [ 27.287787] kthread+0x33c/0x400 [ 27.291123] ? rcu_batches_completed_sched+0x10/0x10 [ 27.296198] ? kthread_stop+0x7a0/0x7a0 [ 27.300148] ret_from_fork+0x3a/0x50 [ 27.303840] Code: 03 80 3c 06 00 0f 85 cf 19 00 00 49 8b 9c 24 b0 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb e0 00 00 00 48 89 fe 48 c1 ee 03 <80> 3c 06 00 0f 85 4b 15 00 00 48 8b 9b e0 00 00 00 0f 1f 44 00 [ 27.322940] RIP: can_migrate_task+0xe2/0x1c20 RSP: ffff8801d9af6c88 [ 27.329315] ---[ end trace 948581b189460494 ]--- [ 27.902405] Shutting down cpus with NMI [ 27.906796] Dumping ftrace buffer: [ 27.910303] (ftrace buffer empty) [ 27.913982] Kernel Offset: disabled [ 27.917578] Rebooting in 86400 seconds..