[  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 '10.128.0.8' (ECDSA) to the list of known hosts.
2020/04/28 13:41:53 fuzzer started
2020/04/28 13:41:56 dialing manager at 10.128.0.105:40209
2020/04/28 13:41:56 syscalls: 2960
2020/04/28 13:41:56 code coverage: enabled
2020/04/28 13:41:56 comparison tracing: enabled
2020/04/28 13:41:56 extra coverage: enabled
2020/04/28 13:41:56 setuid sandbox: enabled
2020/04/28 13:41:56 namespace sandbox: enabled
2020/04/28 13:41:56 Android sandbox: /sys/fs/selinux/policy does not exist
2020/04/28 13:41:56 fault injection: enabled
2020/04/28 13:41:56 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/04/28 13:41:56 net packet injection: enabled
2020/04/28 13:41:56 net device setup: enabled
2020/04/28 13:41:56 concurrency sanitizer: enabled
2020/04/28 13:41:56 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/04/28 13:41:56 USB emulation: /dev/raw-gadget does not exist
syzkaller login: [   49.662469][ T6735] KCSAN: could not find function: '_find_next_bit'
2020/04/28 13:41:59 adding functions to KCSAN blacklist: 'generic_fillattr' 'tick_sched_do_timer' '__writeback_single_inode' '__ext4_new_inode' 'run_timer_softirq' 'mod_timer' 'step_into' 'ktime_get_seconds' 'alloc_pid' 'do_nanosleep' '__delete_from_page_cache' 'dd_has_work' 'ext4_handle_inode_extension' 'blk_mq_get_request' 'page_counter_charge' 'do_exit' 'do_signal_stop' 'n_tty_receive_buf_common' 'kauditd_thread' 'generic_write_end' 'futex_wait_queue_me' '__snd_rawmidi_transmit_ack' 'blk_mq_sched_dispatch_requests' '_find_next_bit' 'ext4_mark_iloc_dirty' 'copy_process' 'blk_mq_dispatch_rq_list' 'audit_log_start' 'ep_poll' 'find_get_pages_range_tag' 'echo_char' 'xas_clear_mark' 
[  163.896851][    T0] ==================================================================
[  163.905116][    T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_next_event
[  163.913688][    T0] 
[  163.916017][    T0] write to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 1:
[  163.923402][    T0]  tick_nohz_idle_stop_tick+0x52c/0x680
[  163.928942][    T0]  do_idle+0x1ad/0x290
[  163.933005][    T0]  cpu_startup_entry+0x14/0x20
[  163.937785][    T0]  start_secondary+0x169/0x1b0
[  163.942553][    T0]  secondary_startup_64+0xa4/0xb0
[  163.947566][    T0] 
[  163.949902][    T0] read to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 0:
[  163.957447][    T0]  tick_nohz_next_event+0x181/0x340
[  163.962655][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[  163.968192][    T0]  do_idle+0x1ad/0x290
[  163.972283][    T0]  cpu_startup_entry+0x14/0x20
[  163.977079][    T0]  rest_init+0xe4/0xeb
[  163.981155][    T0]  arch_call_rest_init+0x13/0x2b
[  163.986099][    T0]  start_kernel+0x82d/0x852
[  163.990602][    T0]  secondary_startup_64+0xa4/0xb0
[  163.995798][    T0] 
[  163.998317][    T0] Reported by Kernel Concurrency Sanitizer on:
[  164.004476][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[  164.012350][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  164.022389][    T0] ==================================================================
[  164.030438][    T0] Kernel panic - not syncing: panic_on_warn set ...
[  164.037014][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[  164.044873][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  164.054901][    T0] Call Trace:
[  164.058172][    T0]  dump_stack+0x11d/0x187
[  164.062571][    T0]  panic+0x210/0x640
[  164.066464][    T0]  ? vprintk_func+0x89/0x13a
[  164.071134][    T0]  kcsan_report.cold+0xc/0x1a
[  164.075815][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[  164.081174][    T0]  tick_nohz_next_event+0x181/0x340
[  164.086703][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[  164.092251][    T0]  ? rcu_dynticks_eqs_exit+0x2c/0x60
[  164.097548][    T0]  ? debug_smp_processor_id+0x3f/0x129
[  164.102993][    T0]  do_idle+0x1ad/0x290
[  164.107041][    T0]  ? debug_smp_processor_id+0x3f/0x129
[  164.112478][    T0]  cpu_startup_entry+0x14/0x20
[  164.117220][    T0]  rest_init+0xe4/0xeb
[  164.121278][    T0]  arch_call_rest_init+0x13/0x2b
[  164.126194][    T0]  start_kernel+0x82d/0x852
[  164.130677][    T0]  secondary_startup_64+0xa4/0xb0
[  164.137245][    T0] Kernel Offset: disabled
[  164.141752][    T0] Rebooting in 86400 seconds..