[  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 '10.128.0.129' (ECDSA) to the list of known hosts.
2020/06/02 13:07:38 fuzzer started
2020/06/02 13:07:38 dialing manager at 10.128.0.105:37135
2020/06/02 13:07:41 syscalls: 3055
2020/06/02 13:07:41 code coverage: enabled
2020/06/02 13:07:41 comparison tracing: enabled
2020/06/02 13:07:41 extra coverage: enabled
2020/06/02 13:07:41 setuid sandbox: enabled
2020/06/02 13:07:41 namespace sandbox: enabled
2020/06/02 13:07:41 Android sandbox: /sys/fs/selinux/policy does not exist
2020/06/02 13:07:41 fault injection: enabled
2020/06/02 13:07:41 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/06/02 13:07:41 net packet injection: enabled
2020/06/02 13:07:41 net device setup: enabled
2020/06/02 13:07:41 concurrency sanitizer: enabled
2020/06/02 13:07:41 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/06/02 13:07:41 USB emulation: enabled
syzkaller login: [   53.043579][ T8914] KCSAN: could not find function: '_find_next_bit'
2020/06/02 13:07:43 adding functions to KCSAN blacklist: '__send_signal' 'tick_nohz_idle_stop_tick' 'page_counter_charge' 'copy_process' 'find_get_pages_range_tag' 'xas_clear_mark' 'ep_poll' '__ext4_new_inode' 'n_tty_receive_buf_common' 'ktime_get_real_seconds' '_find_next_bit' 'mod_timer' 'generic_write_end' 'do_nanosleep' 'run_timer_softirq' 'generic_fillattr' 
[   93.687044][    T0] ==================================================================
[   93.695184][    T0] BUG: KCSAN: data-race in tick_nohz_next_event / tick_sched_do_timer
[   93.703339][    T0] 
[   93.705660][    T0] write to 0xffffffff8764e210 of 4 bytes by interrupt on cpu 0:
[   93.713264][    T0]  tick_sched_do_timer+0xb4/0xd0
[   93.718191][    T0]  tick_sched_timer+0x3f/0xd0
[   93.722880][    T0]  __hrtimer_run_queues+0x271/0x600
[   93.728094][    T0]  hrtimer_interrupt+0x226/0x490
[   93.733007][    T0]  smp_apic_timer_interrupt+0xd8/0x270
[   93.738438][    T0]  apic_timer_interrupt+0xf/0x20
[   93.743346][    T0]  native_safe_halt+0xe/0x10
[   93.747906][    T0]  default_idle+0x21/0x170
[   93.752308][    T0]  do_idle+0x1b7/0x290
[   93.756350][    T0]  cpu_startup_entry+0x14/0x20
[   93.761100][    T0]  rest_init+0xe4/0xeb
[   93.765164][    T0]  arch_call_rest_init+0x13/0x2b
[   93.770076][    T0]  start_kernel+0x7fe/0x823
[   93.774556][    T0]  secondary_startup_64+0xa4/0xb0
[   93.779543][    T0] 
[   93.781862][    T0] read to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 1:
[   93.789185][    T0]  tick_nohz_next_event+0x181/0x340
[   93.794493][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[   93.800012][    T0]  do_idle+0x1ad/0x290
[   93.804107][    T0]  cpu_startup_entry+0x14/0x20
[   93.808863][    T0]  start_secondary+0x169/0x1b0
[   93.813605][    T0]  secondary_startup_64+0xa4/0xb0
[   93.818594][    T0] 
[   93.820892][    T0] Reported by Kernel Concurrency Sanitizer on:
[   93.827019][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0
[   93.834896][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   93.844922][    T0] ==================================================================
[   93.852971][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   93.859532][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0
[   93.867390][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   93.877416][    T0] Call Trace:
[   93.880686][    T0]  dump_stack+0x11d/0x187
[   93.885004][    T0]  panic+0x210/0x640
[   93.888876][    T0]  ? vprintk_func+0x89/0x13a
[   93.893454][    T0]  kcsan_report.cold+0xc/0x1a
[   93.898113][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[   93.903462][    T0]  tick_nohz_next_event+0x181/0x340
[   93.908642][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[   93.914163][    T0]  ? rcu_dynticks_eqs_exit+0x2c/0x60
[   93.919434][    T0]  ? debug_smp_processor_id+0x3f/0x129
[   93.924882][    T0]  do_idle+0x1ad/0x290
[   93.928928][    T0]  cpu_startup_entry+0x14/0x20
[   93.933666][    T0]  start_secondary+0x169/0x1b0
[   93.938403][    T0]  secondary_startup_64+0xa4/0xb0
[   93.944588][    T0] Kernel Offset: disabled
[   93.948900][    T0] Rebooting in 86400 seconds..