[  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.
[  OK  ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch.


Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.10.16' (ECDSA) to the list of known hosts.
2020/05/18 11:31:24 fuzzer started
2020/05/18 11:31:25 dialing manager at 10.128.0.105:46597
2020/05/18 11:31:25 syscalls: 3055
2020/05/18 11:31:25 code coverage: enabled
2020/05/18 11:31:25 comparison tracing: enabled
2020/05/18 11:31:25 extra coverage: enabled
2020/05/18 11:31:25 setuid sandbox: enabled
2020/05/18 11:31:25 namespace sandbox: enabled
2020/05/18 11:31:25 Android sandbox: /sys/fs/selinux/policy does not exist
2020/05/18 11:31:25 fault injection: enabled
2020/05/18 11:31:25 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/05/18 11:31:25 net packet injection: enabled
2020/05/18 11:31:25 net device setup: enabled
2020/05/18 11:31:25 concurrency sanitizer: enabled
2020/05/18 11:31:25 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/05/18 11:31:25 USB emulation: enabled
syzkaller login: [   53.656219][ T8921] KCSAN: could not find function: '_find_next_bit'
2020/05/18 11:31:28 adding functions to KCSAN blacklist: '__ext4_new_inode' 'copy_process' 'echo_char' 'ext4_free_inodes_count' 'kauditd_thread' 'shmem_file_read_iter' '_find_next_bit' 'generic_fillattr' 'blk_mq_get_request' 'tick_sched_do_timer' 'do_nanosleep' 'run_timer_softirq' 'ktime_get_real_seconds' 'pcpu_alloc' 'decrypt_packet' 'do_signal_stop' 'generic_write_end' 'find_get_pages_range_tag' 'ep_poll' 'xas_clear_mark' 'mod_timer' 'n_tty_receive_buf_common' 
[  127.997225][    T0] ==================================================================
[  128.006687][    T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_next_event
[  128.015554][    T0] 
[  128.018145][    T0] write to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 1:
[  128.026396][    T0]  tick_nohz_idle_stop_tick+0x52c/0x680
[  128.031923][    T0]  do_idle+0x1ad/0x290
[  128.036178][    T0]  cpu_startup_entry+0x14/0x20
[  128.040952][    T0]  start_secondary+0x169/0x1b0
[  128.045717][    T0]  secondary_startup_64+0xa4/0xb0
[  128.050724][    T0] 
[  128.053064][    T0] read to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 0:
[  128.061247][    T0]  tick_nohz_next_event+0x181/0x340
[  128.067065][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[  128.073108][    T0]  do_idle+0x1ad/0x290
[  128.077744][    T0]  cpu_startup_entry+0x14/0x20
[  128.083086][    T0]  rest_init+0xe4/0xeb
[  128.088723][    T0]  arch_call_rest_init+0x13/0x2b
[  128.094186][    T0]  start_kernel+0x7fe/0x823
[  128.099192][    T0]  secondary_startup_64+0xa4/0xb0
[  128.104687][    T0] 
[  128.107025][    T0] Reported by Kernel Concurrency Sanitizer on:
[  128.113362][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[  128.121631][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  128.132949][    T0] ==================================================================
[  128.141451][    T0] Kernel panic - not syncing: panic_on_warn set ...
[  128.148243][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[  128.156678][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  128.167191][    T0] Call Trace:
[  128.170496][    T0]  dump_stack+0x11d/0x187
[  128.175959][    T0]  panic+0x210/0x640
[  128.179985][    T0]  ? vprintk_func+0x89/0x13a
[  128.184675][    T0]  kcsan_report.cold+0xc/0x1a
[  128.189578][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[  128.194975][    T0]  tick_nohz_next_event+0x181/0x340
[  128.200843][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[  128.207216][    T0]  ? rcu_dynticks_eqs_exit+0x2c/0x60
[  128.212797][    T0]  ? debug_smp_processor_id+0x3f/0x129
[  128.218689][    T0]  do_idle+0x1ad/0x290
[  128.223001][    T0]  ? debug_smp_processor_id+0x3a/0x129
[  128.228905][    T0]  cpu_startup_entry+0x14/0x20
[  128.234012][    T0]  rest_init+0xe4/0xeb
[  128.238422][    T0]  ? trace_init_perf_perm_irq_work_exit+0xe/0xe
[  128.244958][    T0]  arch_call_rest_init+0x13/0x2b
[  128.250059][    T0]  start_kernel+0x7fe/0x823
[  128.255308][    T0]  secondary_startup_64+0xa4/0xb0
[  128.262327][    T0] Kernel Offset: disabled
[  128.266855][    T0] Rebooting in 86400 seconds..