[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
[  OK  ] Started Update UTMP about System Runlevel Changes.
         Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Load/Save RF Kill Switch Status.


Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.238' (ECDSA) to the list of known hosts.
2020/05/12 09:16:43 fuzzer started
2020/05/12 09:16:43 dialing manager at 10.128.0.105:36533
2020/05/12 09:16:56 syscalls: 3055
2020/05/12 09:16:56 code coverage: enabled
2020/05/12 09:16:56 comparison tracing: enabled
2020/05/12 09:16:56 extra coverage: enabled
2020/05/12 09:16:56 setuid sandbox: enabled
2020/05/12 09:16:56 namespace sandbox: enabled
2020/05/12 09:16:56 Android sandbox: /sys/fs/selinux/policy does not exist
2020/05/12 09:16:56 fault injection: enabled
2020/05/12 09:16:56 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/05/12 09:16:56 net packet injection: enabled
2020/05/12 09:16:56 net device setup: enabled
2020/05/12 09:16:56 concurrency sanitizer: enabled
2020/05/12 09:16:56 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/05/12 09:16:56 USB emulation: enabled
syzkaller login: [   63.245919][ T8907] KCSAN: could not find function: '_find_next_bit'
[   64.418020][ T8907] KCSAN: could not find function: 'poll_schedule_timeout'
2020/05/12 09:17:00 adding functions to KCSAN blacklist: '_find_next_bit' 'xas_clear_mark' 'echo_char' '__put_unused_fd' 'add_timer' 'alloc_pid' '__delete_from_page_cache' 'poll_schedule_timeout' 'other_inode_match' 'do_signal_stop' 'wg_packet_send_staged_packets' 'generic_write_end' 'run_timer_softirq' 'xas_find_marked' 'blk_mq_dispatch_rq_list' 'blk_mq_sched_dispatch_requests' 'wbt_wait' 'blk_mq_get_request' 'n_tty_receive_buf_common' 'mod_timer' '__ext4_new_inode' 'do_nanosleep' 'shmem_file_read_iter' 'page_counter_charge' 'ep_poll' 'generic_fillattr' 'wbt_done' 'ext4_mark_iloc_dirty' 'tick_sched_do_timer' 'find_get_pages_range_tag' 
[  168.710294][    T0] ==================================================================
[  168.718499][    T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_next_event
[  168.727059][    T0] 
[  168.729364][    T0] write to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 1:
[  168.736711][    T0]  tick_nohz_idle_stop_tick+0x52c/0x680
[  168.742227][    T0]  do_idle+0x1ad/0x290
[  168.746272][    T0]  cpu_startup_entry+0x14/0x20
[  168.751012][    T0]  start_secondary+0x169/0x1b0
[  168.755750][    T0]  secondary_startup_64+0xa4/0xb0
[  168.760737][    T0] 
[  168.763041][    T0] read to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 0:
[  168.770294][    T0]  tick_nohz_next_event+0x181/0x340
[  168.775477][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[  168.780993][    T0]  do_idle+0x1ad/0x290
[  168.785035][    T0]  cpu_startup_entry+0x14/0x20
[  168.789770][    T0]  rest_init+0xe4/0xeb
[  168.793812][    T0]  arch_call_rest_init+0x13/0x2b
[  168.798721][    T0]  start_kernel+0x7fe/0x823
[  168.803216][    T0]  secondary_startup_64+0xa4/0xb0
[  168.808204][    T0] 
[  168.810511][    T0] Reported by Kernel Concurrency Sanitizer on:
[  168.816824][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[  168.824707][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  168.834759][    T0] ==================================================================
[  168.842792][    T0] Kernel panic - not syncing: panic_on_warn set ...
[  168.849984][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[  168.857946][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  168.867984][    T0] Call Trace:
[  168.871268][    T0]  dump_stack+0x11d/0x187
[  168.875583][    T0]  panic+0x210/0x640
[  168.879459][    T0]  ? vprintk_func+0x89/0x13a
[  168.884047][    T0]  kcsan_report.cold+0xc/0x1a
[  168.888707][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[  168.894060][    T0]  tick_nohz_next_event+0x181/0x340
[  168.899338][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[  168.904859][    T0]  ? ktime_get+0x1c9/0x210
[  168.909254][    T0]  ? debug_smp_processor_id+0x3f/0x129
[  168.914692][    T0]  do_idle+0x1ad/0x290
[  168.918737][    T0]  ? debug_smp_processor_id+0x3f/0x129
[  168.924171][    T0]  cpu_startup_entry+0x14/0x20
[  168.928921][    T0]  rest_init+0xe4/0xeb
[  168.932990][    T0]  ? trace_init_perf_perm_irq_work_exit+0xe/0xe
[  168.939213][    T0]  arch_call_rest_init+0x13/0x2b
[  168.944142][    T0]  start_kernel+0x7fe/0x823
[  168.948628][    T0]  secondary_startup_64+0xa4/0xb0
[  168.954900][    T0] Kernel Offset: disabled
[  168.959213][    T0] Rebooting in 86400 seconds..