[  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 '10.128.0.131' (ECDSA) to the list of known hosts.
2020/05/29 00:41:41 fuzzer started
2020/05/29 00:41:41 dialing manager at 10.128.0.105:45871
2020/05/29 00:41:42 syscalls: 3055
2020/05/29 00:41:42 code coverage: enabled
2020/05/29 00:41:42 comparison tracing: enabled
2020/05/29 00:41:42 extra coverage: enabled
2020/05/29 00:41:42 setuid sandbox: enabled
2020/05/29 00:41:42 namespace sandbox: enabled
2020/05/29 00:41:42 Android sandbox: /sys/fs/selinux/policy does not exist
2020/05/29 00:41:42 fault injection: enabled
2020/05/29 00:41:42 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/05/29 00:41:42 net packet injection: enabled
2020/05/29 00:41:42 net device setup: enabled
2020/05/29 00:41:42 concurrency sanitizer: enabled
2020/05/29 00:41:42 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/05/29 00:41:42 USB emulation: enabled
2020/05/29 00:41:42 adding functions to KCSAN blacklist: 'copy_process' 'find_get_pages_range_tag' 'alloc_pid' 'generic_write_end' 
syzkaller login: [   49.120132][    T0] ==================================================================
[   49.128235][    T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_sched_do_timer
[   49.136705][    T0] 
[   49.139037][    T0] write to 0xffffffff8764e210 of 4 bytes by interrupt on cpu 1:
[   49.146675][    T0]  tick_sched_do_timer+0xb4/0xd0
[   49.151607][    T0]  tick_sched_timer+0x3f/0xd0
[   49.156281][    T0]  __hrtimer_run_queues+0x271/0x600
[   49.161462][    T0]  hrtimer_interrupt+0x226/0x490
[   49.166377][    T0]  smp_apic_timer_interrupt+0xd8/0x270
[   49.171821][    T0]  apic_timer_interrupt+0xf/0x20
[   49.176758][    T0] 
[   49.179085][    T0] read to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 0:
[   49.186371][    T0]  tick_nohz_idle_stop_tick+0x191/0x680
[   49.191937][    T0]  do_idle+0x1ad/0x290
[   49.195979][    T0]  cpu_startup_entry+0x14/0x20
[   49.200726][    T0]  rest_init+0xe4/0xeb
[   49.204792][    T0]  arch_call_rest_init+0x13/0x2b
[   49.209715][    T0]  start_kernel+0x7fe/0x823
[   49.214207][    T0]  secondary_startup_64+0xa4/0xb0
[   49.219210][    T0] 
[   49.221512][    T0] Reported by Kernel Concurrency Sanitizer on:
[   49.227875][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[   49.235754][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   49.245796][    T0] ==================================================================
[   49.253849][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   49.260429][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[   49.268308][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   49.278353][    T0] Call Trace:
[   49.281648][    T0]  dump_stack+0x11d/0x187
[   49.285979][    T0]  panic+0x210/0x640
[   49.289865][    T0]  ? vprintk_func+0x89/0x13a
[   49.294430][    T0]  kcsan_report.cold+0xc/0x1a
[   49.299087][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[   49.304442][    T0]  tick_nohz_idle_stop_tick+0x191/0x680
[   49.309964][    T0]  do_idle+0x1ad/0x290
[   49.314018][    T0]  ? debug_smp_processor_id+0x3f/0x129
[   49.319455][    T0]  cpu_startup_entry+0x14/0x20
[   49.324193][    T0]  rest_init+0xe4/0xeb
[   49.328239][    T0]  ? trace_init_perf_perm_irq_work_exit+0xe/0xe
[   49.334491][    T0]  arch_call_rest_init+0x13/0x2b
[   49.339404][    T0]  start_kernel+0x7fe/0x823
[   49.343888][    T0]  secondary_startup_64+0xa4/0xb0
[   49.350005][    T0] Kernel Offset: disabled
[   49.354316][    T0] Rebooting in 86400 seconds..