INIT: Entering runlevel: 2
[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2.
[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
Debian GNU/Linux 7 syzkaller ttyS0
Warning: Permanently added '10.128.10.29' (ECDSA) to the list of known hosts.
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syzkaller login: [ 589.361032] ==================================================================
[ 589.368541] BUG: KMSAN: uninit-value in rcu_segcblist_ready_cbs+0xab/0xe0
[ 589.375461] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.16.0+ #84
[ 589.381674] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 589.391001] Call Trace:
[ 589.393560]
[ 589.395727] dump_stack+0x185/0x1d0
[ 589.399340] ? rcu_segcblist_ready_cbs+0xab/0xe0
[ 589.404099] kmsan_report+0x142/0x240
[ 589.407876] __msan_warning_32+0x6c/0xb0
[ 589.411917] rcu_segcblist_ready_cbs+0xab/0xe0
[ 589.416486] rcu_check_callbacks+0x1cb8/0x2cd0
[ 589.421045] ? __msan_poison_alloca+0x15c/0x1d0
[ 589.425727] update_process_times+0x132/0x1a0
[ 589.430213] tick_sched_timer+0x33b/0x4b0
[ 589.434348] ? tick_setup_sched_timer+0x5e0/0x5e0
[ 589.439164] __hrtimer_run_queues+0xc03/0x15d0
[ 589.443723] hrtimer_interrupt+0x426/0xaf0
[ 589.447933] ? hrtimer_init+0x5b0/0x5b0
[ 589.451906] local_apic_timer_interrupt+0x66/0x230
[ 589.456838] smp_apic_timer_interrupt+0x5a/0x90
[ 589.461491] apic_timer_interrupt+0xf/0x20
[ 589.465786]
[ 589.467997] RIP: 0010:default_idle+0x1fb/0x3c0
[ 589.472550] RSP: 0018:ffffffff87c0fd88 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff12
[ 589.480254] RAX: ffff880203eb5440 RBX: 0000000000000000 RCX: ffff880000000000
[ 589.487497] RDX: ffff880203ab5440 RSI: aaaaaaaaaaaab000 RDI: ffffea0000000000
[ 589.494739] RBP: ffffffff87c0fdc0 R08: 0000000001080020 R09: 0000000000000002
[ 589.501982] R10: 0000000000000000 R11: 0000000000000004 R12: 0000000000000000
[ 589.509228] R13: ffffffff87c1eb00 R14: ffffffff87c0fe24 R15: ffffffff87c1f418
[ 589.516484] ? default_idle+0x6b/0x3c0
[ 589.520353] ? __sched_text_end+0x1/0x1
[ 589.524325] arch_cpu_idle+0x20/0x30
[ 589.528054] do_idle+0x349/0x790
[ 589.531397] cpu_startup_entry+0x45/0x50
[ 589.535437] rest_init+0x1c1/0x1f0
[ 589.538980] ? hpet_time_init+0x20/0xe0
[ 589.542929] start_kernel+0xf93/0xfb0
[ 589.546720] x86_64_start_kernel+0x2fa/0x310
[ 589.551112] secondary_startup_64+0xa5/0xb0
[ 589.555410]
[ 589.557007] Uninit was stored to memory at:
[ 589.561302] kmsan_internal_chain_origin+0x12b/0x210
[ 589.566381] __msan_chain_origin+0x69/0xc0
[ 589.570589] rcu_segcblist_enqueue+0x275/0x2d0
[ 589.575141] __call_rcu+0x227/0xef0
[ 589.578739] call_rcu_sched+0x32/0x40
[ 589.582534] release_task+0x24b9/0x2530
[ 589.586482] do_exit+0x2d91/0x38d0
[ 589.589993] do_group_exit+0x1a0/0x360
[ 589.594042] get_signal+0x1320/0x1f20
[ 589.597832] do_signal+0xb8/0x1c80
[ 589.601348] prepare_exit_to_usermode+0x271/0x3a0
[ 589.606163] syscall_return_slowpath+0xe9/0x700
[ 589.610802] do_syscall_64+0x36d/0x430
[ 589.614671] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[ 589.619830] Local variable description: ----pages_to_free@release_pages
[ 589.626551] Variable was created at:
[ 589.630258] release_pages+0x85/0x1670
[ 589.634132] pagevec_lru_move_fn+0x488/0x4e0
[ 589.638507] ==================================================================
[ 589.645837] Disabling lock debugging due to kernel taint
[ 589.651257] Kernel panic - not syncing: panic_on_warn set ...
[ 589.651257]
[ 589.658591] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G B 4.16.0+ #84
[ 589.666105] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 589.675438] Call Trace:
[ 589.677993]
[ 589.680121] dump_stack+0x185/0x1d0
[ 589.683723] panic+0x39d/0x940
[ 589.686900] ? rcu_segcblist_ready_cbs+0xab/0xe0
[ 589.691628] kmsan_report+0x238/0x240
[ 589.695406] __msan_warning_32+0x6c/0xb0
[ 589.699439] rcu_segcblist_ready_cbs+0xab/0xe0
[ 589.704003] rcu_check_callbacks+0x1cb8/0x2cd0
[ 589.708560] ? __msan_poison_alloca+0x15c/0x1d0
[ 589.713207] update_process_times+0x132/0x1a0
[ 589.717679] tick_sched_timer+0x33b/0x4b0
[ 589.721804] ? tick_setup_sched_timer+0x5e0/0x5e0
[ 589.726620] __hrtimer_run_queues+0xc03/0x15d0
[ 589.731179] hrtimer_interrupt+0x426/0xaf0
[ 589.735397] ? hrtimer_init+0x5b0/0x5b0
[ 589.739345] local_apic_timer_interrupt+0x66/0x230
[ 589.744249] smp_apic_timer_interrupt+0x5a/0x90
[ 589.748891] apic_timer_interrupt+0xf/0x20
[ 589.753095]
[ 589.755309] RIP: 0010:default_idle+0x1fb/0x3c0
[ 589.759860] RSP: 0018:ffffffff87c0fd88 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff12
[ 589.767543] RAX: ffff880203eb5440 RBX: 0000000000000000 RCX: ffff880000000000
[ 589.774969] RDX: ffff880203ab5440 RSI: aaaaaaaaaaaab000 RDI: ffffea0000000000
[ 589.782219] RBP: ffffffff87c0fdc0 R08: 0000000001080020 R09: 0000000000000002
[ 589.789462] R10: 0000000000000000 R11: 0000000000000004 R12: 0000000000000000
[ 589.796716] R13: ffffffff87c1eb00 R14: ffffffff87c0fe24 R15: ffffffff87c1f418
[ 589.803965] ? default_idle+0x6b/0x3c0
[ 589.807833] ? __sched_text_end+0x1/0x1
[ 589.811785] arch_cpu_idle+0x20/0x30
[ 589.815475] do_idle+0x349/0x790
[ 589.818816] cpu_startup_entry+0x45/0x50
[ 589.822860] rest_init+0x1c1/0x1f0
[ 589.826377] ? hpet_time_init+0x20/0xe0
[ 589.830324] start_kernel+0xf93/0xfb0
[ 589.834100] x86_64_start_kernel+0x2fa/0x310
[ 589.838487] secondary_startup_64+0xa5/0xb0
[ 589.843163] Dumping ftrace buffer:
[ 589.846686] (ftrace buffer empty)
[ 589.850379] Kernel Offset: disabled
[ 589.853978] Rebooting in 86400 seconds..