[  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 '10.128.0.207' (ECDSA) to the list of known hosts.
2020/04/17 20:55:02 fuzzer started
2020/04/17 20:55:04 dialing manager at 10.128.0.105:36643
2020/04/17 20:55:09 syscalls: 2960
2020/04/17 20:55:09 code coverage: enabled
2020/04/17 20:55:09 comparison tracing: enabled
2020/04/17 20:55:09 extra coverage: enabled
2020/04/17 20:55:09 setuid sandbox: enabled
2020/04/17 20:55:09 namespace sandbox: enabled
2020/04/17 20:55:09 Android sandbox: /sys/fs/selinux/policy does not exist
2020/04/17 20:55:09 fault injection: enabled
2020/04/17 20:55:09 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/04/17 20:55:09 net packet injection: enabled
2020/04/17 20:55:09 net device setup: enabled
2020/04/17 20:55:09 concurrency sanitizer: enabled
2020/04/17 20:55:09 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/04/17 20:55:09 USB emulation: /dev/raw-gadget does not exist
syzkaller login: [   51.801629][ T6713] KCSAN: could not find function: '_find_next_bit'
2020/04/17 20:55:11 adding functions to KCSAN blacklist: 'ep_poll' 'do_exit' 'ext4_free_inodes_count' 'blk_mq_get_request' 'page_counter_charge' 'copy_process' '__ext4_new_inode' 'find_get_pages_range_tag' 'mod_timer' 'dd_has_work' '_find_next_bit' 'generic_fillattr' 'io_sq_thread' 'generic_write_end' 'xas_clear_mark' 
[   96.227564][    T0] ==================================================================
[   96.235702][    T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_next_event
[   96.244277][    T0] 
[   96.246616][    T0] write to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 0:
[   96.253989][    T0]  tick_nohz_idle_stop_tick+0x52c/0x680
[   96.259516][    T0]  do_idle+0x1ad/0x290
[   96.263577][    T0]  cpu_startup_entry+0x14/0x20
[   96.268346][    T0]  rest_init+0xe4/0xeb
[   96.272421][    T0]  arch_call_rest_init+0x13/0x2b
[   96.277386][    T0]  start_kernel+0x82d/0x852
[   96.281895][    T0]  secondary_startup_64+0xa4/0xb0
[   96.286908][    T0] 
[   96.289243][    T0] read to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 1:
[   96.296564][    T0]  tick_nohz_next_event+0x181/0x340
[   96.301771][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[   96.307313][    T0]  do_idle+0x1ad/0x290
[   96.311487][    T0]  cpu_startup_entry+0x14/0x20
[   96.316254][    T0]  start_secondary+0x169/0x1b0
[   96.321029][    T0]  secondary_startup_64+0xa4/0xb0
[   96.326050][    T0] 
[   96.328378][    T0] Reported by Kernel Concurrency Sanitizer on:
[   96.334543][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0
[   96.342428][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   96.352481][    T0] ==================================================================
[   96.360538][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   96.367127][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0
[   96.375033][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   96.385091][    T0] Call Trace:
[   96.388396][    T0]  dump_stack+0x11d/0x187
[   96.392736][    T0]  panic+0x210/0x640
[   96.396642][    T0]  ? vprintk_func+0x89/0x13a
[   96.401254][    T0]  kcsan_report.cold+0xc/0x1a
[   96.406092][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[   96.411504][    T0]  tick_nohz_next_event+0x181/0x340
[   96.416724][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[   96.422289][    T0]  ? rcu_dynticks_eqs_exit+0x2c/0x60
[   96.427581][    T0]  ? debug_smp_processor_id+0x3f/0x129
[   96.433053][    T0]  do_idle+0x1ad/0x290
[   96.437135][    T0]  ? debug_smp_processor_id+0x3a/0x129
[   96.442603][    T0]  cpu_startup_entry+0x14/0x20
[   96.447368][    T0]  start_secondary+0x169/0x1b0
[   96.452142][    T0]  secondary_startup_64+0xa4/0xb0
[   96.458484][    T0] Kernel Offset: disabled
[   96.462942][    T0] Rebooting in 86400 seconds..