[  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 '10.128.0.213' (ECDSA) to the list of known hosts.
2020/05/03 11:54:03 fuzzer started
2020/05/03 11:54:03 dialing manager at 10.128.0.105:43281
2020/05/03 11:54:09 syscalls: 2964
2020/05/03 11:54:09 code coverage: enabled
2020/05/03 11:54:09 comparison tracing: enabled
2020/05/03 11:54:09 extra coverage: enabled
2020/05/03 11:54:09 setuid sandbox: enabled
2020/05/03 11:54:09 namespace sandbox: enabled
2020/05/03 11:54:09 Android sandbox: /sys/fs/selinux/policy does not exist
2020/05/03 11:54:09 fault injection: enabled
2020/05/03 11:54:09 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/05/03 11:54:09 net packet injection: enabled
2020/05/03 11:54:09 net device setup: enabled
2020/05/03 11:54:09 concurrency sanitizer: enabled
2020/05/03 11:54:09 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/05/03 11:54:09 USB emulation: /dev/raw-gadget does not exist
syzkaller login: [   50.840066][ T6720] KCSAN: could not find function: '_find_next_bit'
2020/05/03 11:54:11 adding functions to KCSAN blacklist: 'alloc_pid' 'do_signal_stop' '__ext4_new_inode' 'ep_poll' 'generic_write_end' 'copy_process' '_find_next_bit' 'find_get_pages_range_tag' 'do_nanosleep' 'blk_mq_sched_dispatch_requests' '__snd_rawmidi_transmit_ack' 
[   71.998149][    T0] ==================================================================
[   72.006490][    T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_idle_stop_tick
[   72.015408][    T0] 
[   72.017735][    T0] write to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 0:
[   72.025103][    T0]  tick_nohz_idle_stop_tick+0x52c/0x680
[   72.030643][    T0]  do_idle+0x1ad/0x290
[   72.034707][    T0]  cpu_startup_entry+0x14/0x20
[   72.039464][    T0]  rest_init+0xe4/0xeb
[   72.043538][    T0]  arch_call_rest_init+0x13/0x2b
[   72.048477][    T0]  start_kernel+0x82d/0x852
[   72.052977][    T0]  secondary_startup_64+0xa4/0xb0
[   72.058018][    T0] 
[   72.060347][    T0] read to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 1:
[   72.067643][    T0]  tick_nohz_idle_stop_tick+0x191/0x680
[   72.073273][    T0]  do_idle+0x1ad/0x290
[   72.077514][    T0]  cpu_startup_entry+0x14/0x20
[   72.082366][    T0]  start_secondary+0x169/0x1b0
[   72.087122][    T0]  secondary_startup_64+0xa4/0xb0
[   72.092141][    T0] 
[   72.094458][    T0] Reported by Kernel Concurrency Sanitizer on:
[   72.100614][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0
[   72.108474][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   72.118515][    T0] ==================================================================
[   72.126549][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   72.133471][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0
[   72.142025][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   72.152423][    T0] Call Trace:
[   72.155716][    T0]  dump_stack+0x11d/0x187
[   72.160040][    T0]  panic+0x210/0x640
[   72.163929][    T0]  ? vprintk_func+0x89/0x13a
[   72.168499][    T0]  kcsan_report.cold+0xc/0x1a
[   72.173155][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[   72.178522][    T0]  tick_nohz_idle_stop_tick+0x191/0x680
[   72.184046][    T0]  do_idle+0x1ad/0x290
[   72.188094][    T0]  cpu_startup_entry+0x14/0x20
[   72.192855][    T0]  start_secondary+0x169/0x1b0
[   72.197625][    T0]  secondary_startup_64+0xa4/0xb0
[   72.203934][    T0] Kernel Offset: disabled
[   72.208355][    T0] Rebooting in 86400 seconds..