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


Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.10.29' (ECDSA) to the list of known hosts.
2020/05/12 20:29:33 fuzzer started
2020/05/12 20:29:33 dialing manager at 10.128.0.105:36535
2020/05/12 20:29:33 syscalls: 3055
2020/05/12 20:29:33 code coverage: enabled
2020/05/12 20:29:33 comparison tracing: enabled
2020/05/12 20:29:33 extra coverage: enabled
2020/05/12 20:29:33 setuid sandbox: enabled
2020/05/12 20:29:33 namespace sandbox: enabled
2020/05/12 20:29:33 Android sandbox: /sys/fs/selinux/policy does not exist
2020/05/12 20:29:33 fault injection: enabled
2020/05/12 20:29:33 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/05/12 20:29:33 net packet injection: enabled
2020/05/12 20:29:33 net device setup: enabled
2020/05/12 20:29:33 concurrency sanitizer: enabled
2020/05/12 20:29:33 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/05/12 20:29:33 USB emulation: enabled
syzkaller login: [   53.616556][ T8924] KCSAN: could not find function: '_find_next_bit'
2020/05/12 20:29:37 adding functions to KCSAN blacklist: 'mod_timer' 'fsnotify' 'do_signal_stop' 'futex_wait_queue_me' 'find_get_pages_range_tag' 'pcpu_alloc' 'generic_write_end' 'echo_char' '__dev_queue_xmit' 'ext4_free_inodes_count' 'ep_poll' 'blk_mq_dispatch_rq_list' 'do_nanosleep' 'page_counter_charge' '_find_next_bit' 'atime_needs_update' 'blk_mq_sched_dispatch_requests' 'dd_has_work' 'add_timer' '__ext4_new_inode' 'xas_clear_mark' 'alloc_pid' 'copy_process' 'blk_mq_get_request' 'generic_fillattr' 
[   89.898377][    T0] ==================================================================
[   89.906552][    T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_idle_stop_tick
[   89.915452][    T0] 
[   89.917759][    T0] write to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 0:
[   89.925151][    T0]  tick_nohz_idle_stop_tick+0x52c/0x680
[   89.930678][    T0]  do_idle+0x1ad/0x290
[   89.934735][    T0]  cpu_startup_entry+0x14/0x20
[   89.939522][    T0]  rest_init+0xe4/0xeb
[   89.943569][    T0]  arch_call_rest_init+0x13/0x2b
[   89.948520][    T0]  start_kernel+0x7fe/0x823
[   89.952996][    T0]  secondary_startup_64+0xa4/0xb0
[   89.957985][    T0] 
[   89.960293][    T0] read to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 1:
[   89.967553][    T0]  tick_nohz_idle_stop_tick+0x191/0x680
[   89.973075][    T0]  do_idle+0x1ad/0x290
[   89.977117][    T0]  cpu_startup_entry+0x14/0x20
[   89.981903][    T0]  start_secondary+0x169/0x1b0
[   89.986641][    T0]  secondary_startup_64+0xa4/0xb0
[   89.991674][    T0] 
[   89.993976][    T0] Reported by Kernel Concurrency Sanitizer on:
[   90.000103][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0
[   90.007963][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   90.018037][    T0] ==================================================================
[   90.026182][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   90.032766][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0
[   90.040626][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   90.050800][    T0] Call Trace:
[   90.054073][    T0]  dump_stack+0x11d/0x187
[   90.058388][    T0]  panic+0x210/0x640
[   90.062266][    T0]  ? vprintk_func+0x89/0x13a
[   90.066831][    T0]  kcsan_report.cold+0xc/0x1a
[   90.071488][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[   90.076840][    T0]  tick_nohz_idle_stop_tick+0x191/0x680
[   90.082364][    T0]  do_idle+0x1ad/0x290
[   90.086408][    T0]  ? debug_smp_processor_id+0x3a/0x129
[   90.091843][    T0]  cpu_startup_entry+0x14/0x20
[   90.096583][    T0]  start_secondary+0x169/0x1b0
[   90.101326][    T0]  secondary_startup_64+0xa4/0xb0
[   90.107376][    T0] Kernel Offset: disabled
[   90.111691][    T0] Rebooting in 86400 seconds..