[  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 '10.128.0.172' (ECDSA) to the list of known hosts.
2020/04/21 01:47:13 fuzzer started
2020/04/21 01:47:14 dialing manager at 10.128.0.105:39923
2020/04/21 01:47:15 syscalls: 2960
2020/04/21 01:47:15 code coverage: enabled
2020/04/21 01:47:15 comparison tracing: enabled
2020/04/21 01:47:15 extra coverage: enabled
2020/04/21 01:47:15 setuid sandbox: enabled
2020/04/21 01:47:15 namespace sandbox: enabled
2020/04/21 01:47:15 Android sandbox: /sys/fs/selinux/policy does not exist
2020/04/21 01:47:15 fault injection: enabled
2020/04/21 01:47:15 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/04/21 01:47:15 net packet injection: enabled
2020/04/21 01:47:15 net device setup: enabled
2020/04/21 01:47:15 concurrency sanitizer: enabled
2020/04/21 01:47:15 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/04/21 01:47:15 USB emulation: /dev/raw-gadget does not exist
syzkaller login: [   46.175865][ T6723] KCSAN: could not find function: '_find_next_bit'
[   47.821515][ T6723] KCSAN: could not find function: 'poll_schedule_timeout'
2020/04/21 01:47:18 adding functions to KCSAN blacklist: 'generic_write_end' '_find_next_bit' '__snd_rawmidi_transmit_ack' 'ktime_get_ts64' 'tick_nohz_next_event' 'ktime_get_real_seconds' 'xas_clear_mark' 'mod_timer' 'blk_mq_get_request' 'add_timer' 'ext4_free_inodes_count' 'n_tty_receive_buf_common' 'find_get_pages_range_tag' 'run_timer_softirq' 'poll_schedule_timeout' 'blk_mq_dispatch_rq_list' 'generic_fillattr' 'do_nanosleep' '__ext4_new_inode' 'ep_poll' 'page_counter_charge' 'copy_process' 'blk_mq_sched_dispatch_requests' 'do_signal_stop' 'kauditd_thread' 
[  145.308123][    T0] ==================================================================
[  145.316425][    T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_idle_stop_tick
[  145.325338][    T0] 
[  145.327653][    T0] write to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 0:
[  145.335020][    T0]  tick_nohz_idle_stop_tick+0x52c/0x680
[  145.340560][    T0]  do_idle+0x1ad/0x290
[  145.344613][    T0]  cpu_startup_entry+0x14/0x20
[  145.349364][    T0]  rest_init+0xe4/0xeb
[  145.353431][    T0]  arch_call_rest_init+0x13/0x2b
[  145.358367][    T0]  start_kernel+0x82d/0x852
[  145.362887][    T0]  secondary_startup_64+0xa4/0xb0
[  145.367883][    T0] 
[  145.370194][    T0] read to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 1:
[  145.377470][    T0]  tick_nohz_idle_stop_tick+0x191/0x680
[  145.382993][    T0]  do_idle+0x1ad/0x290
[  145.387062][    T0]  cpu_startup_entry+0x14/0x20
[  145.391805][    T0]  start_secondary+0x169/0x1b0
[  145.396547][    T0]  secondary_startup_64+0xa4/0xb0
[  145.401555][    T0] 
[  145.405689][    T0] Reported by Kernel Concurrency Sanitizer on:
[  145.411849][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0
[  145.419894][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  145.429927][    T0] ==================================================================
[  145.438255][    T0] Kernel panic - not syncing: panic_on_warn set ...
[  145.444835][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0
[  145.452788][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  145.462835][    T0] Call Trace:
[  145.466121][    T0]  dump_stack+0x11d/0x187
[  145.470512][    T0]  panic+0x210/0x640
[  145.474419][    T0]  ? vprintk_func+0x89/0x13a
[  145.478998][    T0]  kcsan_report.cold+0xc/0x1a
[  145.483666][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[  145.489034][    T0]  tick_nohz_idle_stop_tick+0x191/0x680
[  145.494569][    T0]  do_idle+0x1ad/0x290
[  145.498956][    T0]  ? do_idle+0xe0/0x290
[  145.503108][    T0]  cpu_startup_entry+0x14/0x20
[  145.507866][    T0]  start_secondary+0x169/0x1b0
[  145.512625][    T0]  secondary_startup_64+0xa4/0xb0
[  145.519134][    T0] Kernel Offset: disabled
[  145.523480][    T0] Rebooting in 86400 seconds..