[  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 '10.128.1.10' (ECDSA) to the list of known hosts.
2020/06/06 13:28:22 fuzzer started
2020/06/06 13:28:22 dialing manager at 10.128.0.105:33593
2020/06/06 13:28:24 syscalls: 3055
2020/06/06 13:28:24 code coverage: enabled
2020/06/06 13:28:24 comparison tracing: enabled
2020/06/06 13:28:24 extra coverage: enabled
2020/06/06 13:28:24 setuid sandbox: enabled
2020/06/06 13:28:24 namespace sandbox: enabled
2020/06/06 13:28:24 Android sandbox: /sys/fs/selinux/policy does not exist
2020/06/06 13:28:24 fault injection: enabled
2020/06/06 13:28:24 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/06/06 13:28:24 net packet injection: enabled
2020/06/06 13:28:24 net device setup: enabled
2020/06/06 13:28:24 concurrency sanitizer: enabled
2020/06/06 13:28:24 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/06/06 13:28:24 USB emulation: enabled
syzkaller login: [   52.398089][ T8918] KCSAN: could not find function: '_find_next_bit'
2020/06/06 13:28:26 adding functions to KCSAN blacklist: 'do_syslog' 'ep_poll' 'blk_mq_dispatch_rq_list' '__ext4_new_inode' 'find_get_pages_range_tag' 'run_timer_softirq' 'do_nanosleep' 'copy_process' '_find_next_bit' 'blk_mq_get_request' 
[   57.988415][    T0] ==================================================================
[   57.996569][    T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_idle_stop_tick
[   58.005610][    T0] 
[   58.007941][    T0] write to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 1:
[   58.015325][    T0]  tick_nohz_idle_stop_tick+0x52c/0x680
[   58.020872][    T0]  do_idle+0x1ad/0x290
[   58.025225][    T0]  cpu_startup_entry+0x14/0x20
[   58.029990][    T0]  start_secondary+0x169/0x1b0
[   58.034764][    T0]  secondary_startup_64+0xa4/0xb0
[   58.039781][    T0] 
[   58.042111][    T0] read to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 0:
[   58.049595][    T0]  tick_nohz_idle_stop_tick+0x191/0x680
[   58.055121][    T0]  do_idle+0x1ad/0x290
[   58.059187][    T0]  cpu_startup_entry+0x14/0x20
[   58.064721][    T0]  rest_init+0xe4/0xeb
[   58.068800][    T0]  arch_call_rest_init+0x13/0x2b
[   58.073740][    T0]  start_kernel+0x7fe/0x823
[   58.078250][    T0]  secondary_startup_64+0xa4/0xb0
[   58.083268][    T0] 
[   58.085588][    T0] Reported by Kernel Concurrency Sanitizer on:
[   58.091726][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[   58.099743][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   58.109780][    T0] ==================================================================
[   58.117825][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   58.124401][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[   58.132272][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   58.142321][    T0] Call Trace:
[   58.145606][    T0]  dump_stack+0x11d/0x187
[   58.149921][    T0]  panic+0x210/0x640
[   58.153814][    T0]  ? vprintk_func+0x89/0x13a
[   58.158414][    T0]  kcsan_report.cold+0xc/0x1a
[   58.163117][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[   58.168514][    T0]  tick_nohz_idle_stop_tick+0x191/0x680
[   58.174160][    T0]  do_idle+0x1ad/0x290
[   58.178390][    T0]  ? do_idle+0xe0/0x290
[   58.182538][    T0]  cpu_startup_entry+0x14/0x20
[   58.187470][    T0]  rest_init+0xe4/0xeb
[   58.191547][    T0]  ? trace_init_perf_perm_irq_work_exit+0xe/0xe
[   58.197936][    T0]  arch_call_rest_init+0x13/0x2b
[   58.202874][    T0]  start_kernel+0x7fe/0x823
[   58.207558][    T0]  secondary_startup_64+0xa4/0xb0
[   58.214297][    T0] Kernel Offset: disabled
[   58.218633][    T0] Rebooting in 86400 seconds..