[  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 '10.128.0.173' (ECDSA) to the list of known hosts.
2020/04/19 22:21:01 fuzzer started
2020/04/19 22:21:04 dialing manager at 10.128.0.105:46167
2020/04/19 22:21:15 syscalls: 2960
2020/04/19 22:21:15 code coverage: enabled
2020/04/19 22:21:15 comparison tracing: enabled
2020/04/19 22:21:15 extra coverage: enabled
2020/04/19 22:21:15 setuid sandbox: enabled
2020/04/19 22:21:15 namespace sandbox: enabled
2020/04/19 22:21:15 Android sandbox: /sys/fs/selinux/policy does not exist
2020/04/19 22:21:15 fault injection: enabled
2020/04/19 22:21:15 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/04/19 22:21:15 net packet injection: enabled
2020/04/19 22:21:15 net device setup: enabled
2020/04/19 22:21:15 concurrency sanitizer: enabled
2020/04/19 22:21:15 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/04/19 22:21:15 USB emulation: /dev/raw-gadget does not exist
syzkaller login: [   60.320056][ T6730] KCSAN: could not find function: '_find_next_bit'
2020/04/19 22:21:18 adding functions to KCSAN blacklist: 'generic_write_end' 'xas_find_marked' 'mod_timer' 'echo_char' 'ext4_free_inodes_count' 'kauditd_thread' 'blk_mq_get_request' 'copy_process' 'run_timer_softirq' 'generic_fillattr' '_find_next_bit' 'xas_clear_mark' 'do_nanosleep' 'io_sq_thread' 'ep_poll' 'page_counter_charge' '__snd_rawmidi_transmit_ack' 'find_get_pages_range_tag' 'blk_mq_dispatch_rq_list' 'audit_log_start' 'pcpu_alloc' 'n_tty_receive_buf_common' '__ext4_new_inode' 'alloc_pid' 
[  167.781880][    T0] ==================================================================
[  167.790015][    T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_idle_stop_tick
[  167.798939][    T0] 
[  167.801257][    T0] write to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 0:
[  167.808631][    T0]  tick_nohz_idle_stop_tick+0x52c/0x680
[  167.814161][    T0]  do_idle+0x1ad/0x290
[  167.818208][    T0]  cpu_startup_entry+0x14/0x20
[  167.822977][    T0]  rest_init+0xe4/0xeb
[  167.827038][    T0]  arch_call_rest_init+0x13/0x2b
[  167.831968][    T0]  start_kernel+0x82d/0x852
[  167.836454][    T0]  secondary_startup_64+0xa4/0xb0
[  167.841450][    T0] 
[  167.843769][    T0] read to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 1:
[  167.851069][    T0]  tick_nohz_idle_stop_tick+0x191/0x680
[  167.856606][    T0]  do_idle+0x1ad/0x290
[  167.860667][    T0]  cpu_startup_entry+0x14/0x20
[  167.865424][    T0]  start_secondary+0x169/0x1b0
[  167.870186][    T0]  secondary_startup_64+0xa4/0xb0
[  167.876158][    T0] 
[  167.878482][    T0] Reported by Kernel Concurrency Sanitizer on:
[  167.884618][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0
[  167.892485][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  167.902530][    T0] ==================================================================
[  167.910608][    T0] Kernel panic - not syncing: panic_on_warn set ...
[  167.918132][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0
[  167.925996][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  167.936067][    T0] Call Trace:
[  167.939359][    T0]  dump_stack+0x11d/0x187
[  167.943684][    T0]  panic+0x210/0x640
[  167.947569][    T0]  ? vprintk_func+0x89/0x13a
[  167.952232][    T0]  kcsan_report.cold+0xc/0x1a
[  167.956937][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[  167.962305][    T0]  tick_nohz_idle_stop_tick+0x191/0x680
[  167.967854][    T0]  do_idle+0x1ad/0x290
[  167.971920][    T0]  ? debug_smp_processor_id+0x3a/0x129
[  167.977359][    T0]  cpu_startup_entry+0x14/0x20
[  167.982117][    T0]  start_secondary+0x169/0x1b0
[  167.986864][    T0]  secondary_startup_64+0xa4/0xb0
[  167.992964][    T0] Kernel Offset: disabled
[  167.997290][    T0] Rebooting in 86400 seconds..