[  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 '10.128.1.6' (ECDSA) to the list of known hosts.
2020/04/21 11:39:50 fuzzer started
syzkaller login: [   44.126403][ T6693] as (6693) used greatest stack depth: 10440 bytes left
2020/04/21 11:39:52 dialing manager at 10.128.0.105:44139
2020/04/21 11:39:54 syscalls: 2960
2020/04/21 11:39:54 code coverage: enabled
2020/04/21 11:39:54 comparison tracing: enabled
2020/04/21 11:39:54 extra coverage: enabled
2020/04/21 11:39:54 setuid sandbox: enabled
2020/04/21 11:39:54 namespace sandbox: enabled
2020/04/21 11:39:54 Android sandbox: /sys/fs/selinux/policy does not exist
2020/04/21 11:39:54 fault injection: enabled
2020/04/21 11:39:54 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/04/21 11:39:54 net packet injection: enabled
2020/04/21 11:39:54 net device setup: enabled
2020/04/21 11:39:54 concurrency sanitizer: enabled
2020/04/21 11:39:54 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/04/21 11:39:54 USB emulation: /dev/raw-gadget does not exist
[   47.778378][ T6701] KCSAN: could not find function: '_find_next_bit'
2020/04/21 11:39:56 adding functions to KCSAN blacklist: 'page_counter_charge' 'copy_process' 'blk_mq_sched_dispatch_requests' 'alloc_pid' 'find_get_pages_range_tag' 'echo_char' '_find_next_bit' 'ep_poll' 'mod_timer' 'atime_needs_update' 'add_timer' '__ext4_new_inode' 'do_nanosleep' 'xas_clear_mark' 
[   69.722542][    T0] ==================================================================
[   69.730651][    T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_next_event
[   69.739207][    T0] 
[   69.741515][    T0] write to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 1:
[   69.748862][    T0]  tick_nohz_idle_stop_tick+0x52c/0x680
[   69.754427][    T0]  do_idle+0x1ad/0x290
[   69.758476][    T0]  cpu_startup_entry+0x14/0x20
[   69.763222][    T0]  start_secondary+0x169/0x1b0
[   69.767964][    T0]  secondary_startup_64+0xa4/0xb0
[   69.772960][    T0] 
[   69.775271][    T0] read to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 0:
[   69.782536][    T0]  tick_nohz_next_event+0x181/0x340
[   69.787715][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[   69.793237][    T0]  do_idle+0x1ad/0x290
[   69.797341][    T0]  cpu_startup_entry+0x14/0x20
[   69.802081][    T0]  rest_init+0xe4/0xeb
[   69.806130][    T0]  arch_call_rest_init+0x13/0x2b
[   69.811046][    T0]  start_kernel+0x82d/0x852
[   69.815537][    T0]  secondary_startup_64+0xa4/0xb0
[   69.820564][    T0] 
[   69.822876][    T0] Reported by Kernel Concurrency Sanitizer on:
[   69.829046][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[   69.836909][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   69.846937][    T0] ==================================================================
[   69.854972][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   69.861576][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[   69.869501][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   69.879543][    T0] Call Trace:
[   69.882840][    T0]  dump_stack+0x11d/0x187
[   69.887175][    T0]  panic+0x210/0x640
[   69.891132][    T0]  ? vprintk_func+0x89/0x13a
[   69.895739][    T0]  kcsan_report.cold+0xc/0x1a
[   69.900402][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[   69.905758][    T0]  tick_nohz_next_event+0x181/0x340
[   69.910938][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[   69.916476][    T0]  ? ktime_get+0x1c9/0x210
[   69.920884][    T0]  ? debug_smp_processor_id+0x3f/0x129
[   69.926324][    T0]  do_idle+0x1ad/0x290
[   69.930375][    T0]  ? debug_smp_processor_id+0x3f/0x129
[   69.935813][    T0]  cpu_startup_entry+0x14/0x20
[   69.940559][    T0]  rest_init+0xe4/0xeb
[   69.944611][    T0]  arch_call_rest_init+0x13/0x2b
[   69.949529][    T0]  start_kernel+0x82d/0x852
[   69.954012][    T0]  secondary_startup_64+0xa4/0xb0
[   69.960373][    T0] Kernel Offset: disabled
[   69.964697][    T0] Rebooting in 86400 seconds..