[  OK  ] Reached target Login Prompts.
[  OK  ] Reached target Multi-User System.
[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
[  OK  ] Started Update UTMP about System Runlevel Changes.


Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.157' (ECDSA) to the list of known hosts.
2020/06/12 04:19:55 fuzzer started
2020/06/12 04:19:55 dialing manager at 10.128.0.105:39483
2020/06/12 04:19:56 syscalls: 3085
2020/06/12 04:19:56 code coverage: enabled
2020/06/12 04:19:56 comparison tracing: enabled
2020/06/12 04:19:56 extra coverage: enabled
2020/06/12 04:19:56 setuid sandbox: enabled
2020/06/12 04:19:56 namespace sandbox: enabled
2020/06/12 04:19:56 Android sandbox: /sys/fs/selinux/policy does not exist
2020/06/12 04:19:56 fault injection: enabled
2020/06/12 04:19:56 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/06/12 04:19:56 net packet injection: enabled
2020/06/12 04:19:56 net device setup: enabled
2020/06/12 04:19:56 concurrency sanitizer: enabled
2020/06/12 04:19:56 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/06/12 04:19:56 USB emulation: enabled
2020/06/12 04:19:56 adding functions to KCSAN blacklist: 'add_timer' 'file_update_time' 'blk_mq_get_request' 'xas_clear_mark' 'ep_poll' 'complete_signal' 'futex_wait_queue_me' 
syzkaller login: [   55.790384][    T0] ==================================================================
[   55.798782][    T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_idle_stop_tick
[   55.807780][    T0] 
[   55.810126][    T0] write to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 1:
[   55.817514][    T0]  tick_nohz_idle_stop_tick+0x52c/0x680
[   55.823041][    T0]  do_idle+0x1ad/0x290
[   55.827114][    T0]  cpu_startup_entry+0x14/0x20
[   55.832035][    T0]  start_secondary+0x169/0x1b0
[   55.836898][    T0]  secondary_startup_64+0xa4/0xb0
[   55.841907][    T0] 
[   55.844238][    T0] read to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 0:
[   55.851530][    T0]  tick_nohz_idle_stop_tick+0x191/0x680
[   55.857057][    T0]  do_idle+0x1ad/0x290
[   55.861126][    T0]  cpu_startup_entry+0x14/0x20
[   55.866048][    T0]  rest_init+0xe4/0xeb
[   55.870117][    T0]  arch_call_rest_init+0x13/0x2b
[   55.875037][    T0]  start_kernel+0x7fe/0x823
[   55.879548][    T0]  secondary_startup_64+0xa4/0xb0
[   55.884632][    T0] 
[   55.886967][    T0] Reported by Kernel Concurrency Sanitizer on:
[   55.893109][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[   55.900978][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   55.911049][    T0] ==================================================================
[   55.919104][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   55.925816][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[   55.934524][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   55.946843][    T0] Call Trace:
[   55.950141][    T0]  dump_stack+0x11d/0x187
[   55.954571][    T0]  panic+0x210/0x640
[   55.958465][    T0]  ? vprintk_func+0x89/0x13a
[   55.963407][    T0]  kcsan_report.cold+0xc/0x1a
[   55.968103][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[   55.973480][    T0]  tick_nohz_idle_stop_tick+0x191/0x680
[   55.981274][    T0]  do_idle+0x1ad/0x290
[   55.985700][    T0]  ? debug_smp_processor_id+0x3a/0x129
[   55.991215][    T0]  cpu_startup_entry+0x14/0x20
[   55.995971][    T0]  rest_init+0xe4/0xeb
[   56.000157][    T0]  ? trace_init_perf_perm_irq_work_exit+0xe/0xe
[   56.006591][    T0]  arch_call_rest_init+0x13/0x2b
[   56.011520][    T0]  start_kernel+0x7fe/0x823
[   56.016032][    T0]  secondary_startup_64+0xa4/0xb0
[   56.022409][    T0] Kernel Offset: disabled
[   56.026887][    T0] Rebooting in 86400 seconds..