[  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 '10.128.0.90' (ECDSA) to the list of known hosts.
2020/04/29 22:04:02 fuzzer started
2020/04/29 22:04:04 dialing manager at 10.128.0.105:39627
2020/04/29 22:04:11 syscalls: 2964
2020/04/29 22:04:11 code coverage: enabled
2020/04/29 22:04:11 comparison tracing: enabled
2020/04/29 22:04:11 extra coverage: enabled
2020/04/29 22:04:11 setuid sandbox: enabled
2020/04/29 22:04:11 namespace sandbox: enabled
2020/04/29 22:04:11 Android sandbox: /sys/fs/selinux/policy does not exist
2020/04/29 22:04:11 fault injection: enabled
2020/04/29 22:04:11 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/04/29 22:04:11 net packet injection: enabled
2020/04/29 22:04:11 net device setup: enabled
2020/04/29 22:04:11 concurrency sanitizer: enabled
2020/04/29 22:04:11 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/04/29 22:04:11 USB emulation: /dev/raw-gadget does not exist
syzkaller login: [   52.197352][ T6713] KCSAN: could not find function: '_find_next_bit'
2020/04/29 22:04:12 adding functions to KCSAN blacklist: 'generic_write_end' 'run_timer_softirq' 'xas_clear_mark' 'blk_mq_get_request' 'ep_poll' 'do_exit' '_find_next_bit' '__ext4_new_inode' 'page_counter_charge' 'ext4_da_write_end' 'blk_mq_dispatch_rq_list' 'find_get_pages_range_tag' 
[   94.949409][    T0] ==================================================================
[   94.957528][    T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_next_event
[   94.966097][    T0] 
[   94.968404][    T0] write to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 1:
[   94.975748][    T0]  tick_nohz_idle_stop_tick+0x52c/0x680
[   94.981277][    T0]  do_idle+0x1ad/0x290
[   94.985324][    T0]  cpu_startup_entry+0x14/0x20
[   94.990067][    T0]  start_secondary+0x169/0x1b0
[   94.994878][    T0]  secondary_startup_64+0xa4/0xb0
[   94.999872][    T0] 
[   95.002180][    T0] read to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 0:
[   95.009452][    T0]  tick_nohz_next_event+0x181/0x340
[   95.014632][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[   95.020310][    T0]  do_idle+0x1ad/0x290
[   95.024359][    T0]  cpu_startup_entry+0x14/0x20
[   95.029101][    T0]  rest_init+0xe4/0xeb
[   95.033152][    T0]  arch_call_rest_init+0x13/0x2b
[   95.038065][    T0]  start_kernel+0x82d/0x852
[   95.042565][    T0]  secondary_startup_64+0xa4/0xb0
[   95.047555][    T0] 
[   95.049860][    T0] Reported by Kernel Concurrency Sanitizer on:
[   95.056008][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[   95.063870][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   95.073910][    T0] ==================================================================
[   95.081948][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   95.088522][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[   95.096396][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   95.106568][    T0] Call Trace:
[   95.109854][    T0]  dump_stack+0x11d/0x187
[   95.114283][    T0]  panic+0x210/0x640
[   95.118292][    T0]  ? vprintk_func+0x89/0x13a
[   95.122867][    T0]  kcsan_report.cold+0xc/0x1a
[   95.127545][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[   95.132919][    T0]  tick_nohz_next_event+0x181/0x340
[   95.138101][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[   95.143646][    T0]  ? ktime_get+0x1c9/0x210
[   95.148148][    T0]  ? debug_smp_processor_id+0x3f/0x129
[   95.153610][    T0]  do_idle+0x1ad/0x290
[   95.157873][    T0]  ? debug_smp_processor_id+0x3f/0x129
[   95.163419][    T0]  cpu_startup_entry+0x14/0x20
[   95.168278][    T0]  rest_init+0xe4/0xeb
[   95.172329][    T0]  arch_call_rest_init+0x13/0x2b
[   95.177316][    T0]  start_kernel+0x82d/0x852
[   95.181817][    T0]  secondary_startup_64+0xa4/0xb0
[   95.188198][    T0] Kernel Offset: disabled
[   95.192526][    T0] Rebooting in 86400 seconds..