Starting Update UTMP about System Runlevel Changes...
[  OK  ] Started Load/Save RF Kill Switch Status.
[  OK  ] Started Update UTMP about System Runlevel Changes.


Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.141' (ECDSA) to the list of known hosts.
2020/06/02 12:51:49 fuzzer started
2020/06/02 12:51:49 dialing manager at 10.128.0.105:37135
2020/06/02 12:51:52 syscalls: 3055
2020/06/02 12:51:52 code coverage: enabled
2020/06/02 12:51:52 comparison tracing: enabled
2020/06/02 12:51:52 extra coverage: enabled
2020/06/02 12:51:52 setuid sandbox: enabled
2020/06/02 12:51:52 namespace sandbox: enabled
2020/06/02 12:51:52 Android sandbox: /sys/fs/selinux/policy does not exist
2020/06/02 12:51:52 fault injection: enabled
2020/06/02 12:51:52 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/06/02 12:51:52 net packet injection: enabled
2020/06/02 12:51:52 net device setup: enabled
2020/06/02 12:51:52 concurrency sanitizer: enabled
2020/06/02 12:51:52 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/06/02 12:51:52 USB emulation: enabled
syzkaller login: [   54.429860][ T8919] KCSAN: could not find function: '_find_next_bit'
2020/06/02 12:51:53 adding functions to KCSAN blacklist: 'do_nanosleep' 'run_timer_softirq' 'xas_clear_mark' 'copy_process' 'find_get_pages_range_tag' '_find_next_bit' 'mod_timer' 'generic_write_end' 'ep_poll' '__ext4_new_inode' '__send_signal' 'n_tty_receive_buf_common' 
[   65.350039][    T0] ==================================================================
[   65.358297][    T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_next_event
[   65.366951][    T0] 
[   65.369273][    T0] write to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 1:
[   65.376621][    T0]  tick_nohz_idle_stop_tick+0x52c/0x680
[   65.382141][    T0]  do_idle+0x1ad/0x290
[   65.387140][    T0]  cpu_startup_entry+0x14/0x20
[   65.391979][    T0]  start_secondary+0x169/0x1b0
[   65.396742][    T0]  secondary_startup_64+0xa4/0xb0
[   65.401732][    T0] 
[   65.404041][    T0] read to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 0:
[   65.411669][    T0]  tick_nohz_next_event+0x181/0x340
[   65.416845][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[   65.422492][    T0]  do_idle+0x1ad/0x290
[   65.426534][    T0]  cpu_startup_entry+0x14/0x20
[   65.431271][    T0]  rest_init+0xe4/0xeb
[   65.435434][    T0]  arch_call_rest_init+0x13/0x2b
[   65.440360][    T0]  start_kernel+0x7fe/0x823
[   65.444881][    T0]  secondary_startup_64+0xa4/0xb0
[   65.449882][    T0] 
[   65.452189][    T0] Reported by Kernel Concurrency Sanitizer on:
[   65.458465][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[   65.466464][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   65.476513][    T0] ==================================================================
[   65.484616][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   65.491196][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[   65.499230][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   65.509273][    T0] Call Trace:
[   65.512556][    T0]  dump_stack+0x11d/0x187
[   65.516865][    T0]  panic+0x210/0x640
[   65.520739][    T0]  ? vprintk_func+0x89/0x13a
[   65.525324][    T0]  kcsan_report.cold+0xc/0x1a
[   65.530014][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[   65.535463][    T0]  tick_nohz_next_event+0x181/0x340
[   65.540646][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[   65.546181][    T0]  ? rcu_dynticks_eqs_exit+0x2c/0x60
[   65.551445][    T0]  ? debug_smp_processor_id+0x3f/0x129
[   65.556882][    T0]  do_idle+0x1ad/0x290
[   65.561027][    T0]  ? debug_smp_processor_id+0x3f/0x129
[   65.566477][    T0]  cpu_startup_entry+0x14/0x20
[   65.571310][    T0]  rest_init+0xe4/0xeb
[   65.575633][    T0]  ? trace_init_perf_perm_irq_work_exit+0xe/0xe
[   65.582057][    T0]  arch_call_rest_init+0x13/0x2b
[   65.586993][    T0]  start_kernel+0x7fe/0x823
[   65.591497][    T0]  secondary_startup_64+0xa4/0xb0
[   65.598354][    T0] Kernel Offset: disabled
[   65.614071][    T0] Rebooting in 86400 seconds..