[  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 '10.128.10.35' (ECDSA) to the list of known hosts.
2020/05/26 01:36:08 fuzzer started
2020/05/26 01:36:08 dialing manager at 10.128.0.105:44363
2020/05/26 01:36:13 syscalls: 3055
2020/05/26 01:36:13 code coverage: enabled
2020/05/26 01:36:13 comparison tracing: enabled
2020/05/26 01:36:13 extra coverage: enabled
2020/05/26 01:36:13 setuid sandbox: enabled
2020/05/26 01:36:13 namespace sandbox: enabled
2020/05/26 01:36:13 Android sandbox: /sys/fs/selinux/policy does not exist
2020/05/26 01:36:13 fault injection: enabled
2020/05/26 01:36:13 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/05/26 01:36:13 net packet injection: enabled
2020/05/26 01:36:13 net device setup: enabled
2020/05/26 01:36:13 concurrency sanitizer: enabled
2020/05/26 01:36:13 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/05/26 01:36:13 USB emulation: enabled
syzkaller login: [   54.652819][ T8921] KCSAN: could not find function: '_find_next_bit'
2020/05/26 01:36:15 adding functions to KCSAN blacklist: 'ep_poll' '_find_next_bit' 'dd_has_work' 'blk_mq_dispatch_rq_list' 'xas_clear_mark' 'copy_process' 'mod_timer' 'blk_mq_get_request' 'generic_write_end' 'generic_fillattr' 'page_counter_charge' 'shmem_getpage_gfp' '__mark_inode_dirty' 'find_get_pages_range_tag' 'vm_area_dup' 'run_timer_softirq' 'snd_rawmidi_kernel_write1' 
[  109.641002][    T0] ==================================================================
[  109.649108][    T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_next_event
[  109.658062][    T0] 
[  109.660636][    T0] write to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 0:
[  109.668427][    T0]  tick_nohz_idle_stop_tick+0x52c/0x680
[  109.674577][    T0]  do_idle+0x1ad/0x290
[  109.679101][    T0]  cpu_startup_entry+0x14/0x20
[  109.684118][    T0]  rest_init+0xe4/0xeb
[  109.688493][    T0]  arch_call_rest_init+0x13/0x2b
[  109.693948][    T0]  start_kernel+0x7fe/0x823
[  109.699001][    T0]  secondary_startup_64+0xa4/0xb0
[  109.704415][    T0] 
[  109.707068][    T0] read to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 1:
[  109.715843][    T0]  tick_nohz_next_event+0x181/0x340
[  109.721211][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[  109.729430][    T0]  do_idle+0x1ad/0x290
[  109.733484][    T0]  cpu_startup_entry+0x14/0x20
[  109.738326][    T0]  start_secondary+0x169/0x1b0
[  109.743081][    T0]  secondary_startup_64+0xa4/0xb0
[  109.748089][    T0] 
[  109.753180][    T0] Reported by Kernel Concurrency Sanitizer on:
[  109.759552][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0
[  109.767593][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  109.777763][    T0] ==================================================================
[  109.785805][    T0] Kernel panic - not syncing: panic_on_warn set ...
[  109.792399][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0
[  109.800270][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  109.810319][    T0] Call Trace:
[  109.813602][    T0]  dump_stack+0x11d/0x187
[  109.817910][    T0]  panic+0x210/0x640
[  109.821798][    T0]  ? vprintk_func+0x89/0x13a
[  109.826368][    T0]  kcsan_report.cold+0xc/0x1a
[  109.831033][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[  109.836386][    T0]  tick_nohz_next_event+0x181/0x340
[  109.841679][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[  109.847248][    T0]  ? rcu_dynticks_eqs_exit+0x2c/0x60
[  109.852580][    T0]  ? debug_smp_processor_id+0x3f/0x129
[  109.858124][    T0]  do_idle+0x1ad/0x290
[  109.862186][    T0]  ? debug_smp_processor_id+0x3a/0x129
[  109.867636][    T0]  cpu_startup_entry+0x14/0x20
[  109.872379][    T0]  start_secondary+0x169/0x1b0
[  109.877144][    T0]  secondary_startup_64+0xa4/0xb0
[  109.883587][    T0] Kernel Offset: disabled
[  109.887998][    T0] Rebooting in 86400 seconds..