[  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 '10.128.0.39' (ECDSA) to the list of known hosts.
2020/05/04 19:18:03 fuzzer started
2020/05/04 19:18:03 dialing manager at 10.128.0.105:33141
2020/05/04 19:18:04 syscalls: 2965
2020/05/04 19:18:04 code coverage: enabled
2020/05/04 19:18:04 comparison tracing: enabled
2020/05/04 19:18:04 extra coverage: enabled
2020/05/04 19:18:04 setuid sandbox: enabled
2020/05/04 19:18:04 namespace sandbox: enabled
2020/05/04 19:18:04 Android sandbox: /sys/fs/selinux/policy does not exist
2020/05/04 19:18:04 fault injection: enabled
2020/05/04 19:18:04 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/05/04 19:18:04 net packet injection: enabled
2020/05/04 19:18:04 net device setup: enabled
2020/05/04 19:18:04 concurrency sanitizer: enabled
2020/05/04 19:18:04 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/05/04 19:18:04 USB emulation: /dev/raw-gadget does not exist
syzkaller login: [   45.181867][ T6726] KCSAN: could not find function: '_find_next_bit'
2020/05/04 19:18:05 adding functions to KCSAN blacklist: 'page_counter_charge' 'ep_poll' '_find_next_bit' '__ext4_new_inode' 'do_signal_stop' 'dd_has_work' 
[   49.074022][    T0] ==================================================================
[   49.082138][    T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_next_event
[   49.090705][    T0] 
[   49.093032][    T0] write to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 1:
[   49.100403][    T0]  tick_nohz_idle_stop_tick+0x52c/0x680
[   49.105961][    T0]  do_idle+0x1ad/0x290
[   49.110036][    T0]  cpu_startup_entry+0x14/0x20
[   49.114791][    T0]  start_secondary+0x169/0x1b0
[   49.119549][    T0]  secondary_startup_64+0xa4/0xb0
[   49.124540][    T0] 
[   49.126850][    T0] read to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 0:
[   49.134114][    T0]  tick_nohz_next_event+0x181/0x340
[   49.139323][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[   49.144876][    T0]  do_idle+0x1ad/0x290
[   49.148939][    T0]  cpu_startup_entry+0x14/0x20
[   49.153682][    T0]  rest_init+0xe4/0xeb
[   49.157731][    T0]  arch_call_rest_init+0x13/0x2b
[   49.162646][    T0]  start_kernel+0x82d/0x852
[   49.167174][    T0]  secondary_startup_64+0xa4/0xb0
[   49.172169][    T0] 
[   49.174473][    T0] Reported by Kernel Concurrency Sanitizer on:
[   49.180612][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[   49.188662][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   49.198691][    T0] ==================================================================
[   49.206855][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   49.213447][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[   49.221309][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   49.231341][    T0] Call Trace:
[   49.234615][    T0]  dump_stack+0x11d/0x187
[   49.238924][    T0]  panic+0x210/0x640
[   49.242816][    T0]  ? vprintk_func+0x89/0x13a
[   49.247397][    T0]  kcsan_report.cold+0xc/0x1a
[   49.252074][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[   49.257445][    T0]  tick_nohz_next_event+0x181/0x340
[   49.262625][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[   49.268156][    T0]  ? rcu_dynticks_eqs_exit+0x2c/0x60
[   49.273436][    T0]  ? debug_smp_processor_id+0x3f/0x129
[   49.278881][    T0]  do_idle+0x1ad/0x290
[   49.282947][    T0]  ? debug_smp_processor_id+0x3f/0x129
[   49.288391][    T0]  cpu_startup_entry+0x14/0x20
[   49.293199][    T0]  rest_init+0xe4/0xeb
[   49.297256][    T0]  arch_call_rest_init+0x13/0x2b
[   49.302177][    T0]  start_kernel+0x82d/0x852
[   49.307274][    T0]  secondary_startup_64+0xa4/0xb0
[   49.313361][    T0] Kernel Offset: disabled
[   49.317691][    T0] Rebooting in 86400 seconds..