[  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 '10.128.0.159' (ECDSA) to the list of known hosts.
2020/06/17 12:41:22 fuzzer started
2020/06/17 12:41:23 dialing manager at 10.128.0.105:40489
2020/06/17 12:41:23 syscalls: 3085
2020/06/17 12:41:23 code coverage: enabled
2020/06/17 12:41:23 comparison tracing: enabled
2020/06/17 12:41:23 extra coverage: enabled
2020/06/17 12:41:23 setuid sandbox: enabled
2020/06/17 12:41:23 namespace sandbox: enabled
2020/06/17 12:41:23 Android sandbox: /sys/fs/selinux/policy does not exist
2020/06/17 12:41:23 fault injection: enabled
2020/06/17 12:41:23 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/06/17 12:41:23 net packet injection: enabled
2020/06/17 12:41:23 net device setup: enabled
2020/06/17 12:41:23 concurrency sanitizer: enabled
2020/06/17 12:41:23 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/06/17 12:41:23 USB emulation: enabled
syzkaller login: [   49.241276][ T8913] KCSAN: could not find function: '_find_next_bit'
2020/06/17 12:41:26 suppressing KCSAN reports in functions: 'file_update_time' '_find_next_bit' 'find_get_pages_range_tag' 'do_signal_stop' 'shmem_file_read_iter' 'run_timer_softirq' 'futex_wait_queue_me' 'blk_mq_dispatch_rq_list' '__delete_from_page_cache' 'xas_clear_mark' 'alloc_pid' '__writeback_single_inode' 'ktime_get_real_seconds' 'ext4_mark_iloc_dirty' 'mod_timer' 'ep_poll' 'ext4_sync_file' 'generic_fillattr' '__rb_rotate_set_parents' 'tick_sched_do_timer' '__ext4_new_inode' 'dd_has_work' 'page_counter_charge' 'generic_write_end' 'do_nanosleep' 'vm_area_dup' 'complete_signal' 'ext4_free_inodes_count' 'copy_process' 'pcpu_alloc' 
[   93.763631][    T0] ==================================================================
[   93.771731][    T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_idle_stop_tick
[   93.780635][    T0] 
[   93.782962][    T0] write to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 0:
[   93.790328][    T0]  tick_nohz_idle_stop_tick+0x52c/0x680
[   93.795857][    T0]  do_idle+0x1ad/0x290
[   93.799909][    T0]  cpu_startup_entry+0x14/0x20
[   93.804662][    T0]  rest_init+0xe4/0xeb
[   93.808723][    T0]  arch_call_rest_init+0x13/0x2b
[   93.813656][    T0]  start_kernel+0x7fe/0x823
[   93.818154][    T0]  secondary_startup_64+0xa4/0xb0
[   93.823156][    T0] 
[   93.825484][    T0] read to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 1:
[   93.832796][    T0]  tick_nohz_idle_stop_tick+0x191/0x680
[   93.838335][    T0]  do_idle+0x1ad/0x290
[   93.842406][    T0]  cpu_startup_entry+0x14/0x20
[   93.847162][    T0]  start_secondary+0x169/0x1b0
[   93.851915][    T0]  secondary_startup_64+0xa4/0xb0
[   93.856903][    T0] 
[   93.859199][    T0] Reported by Kernel Concurrency Sanitizer on:
[   93.865425][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0
[   93.873414][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   93.883562][    T0] ==================================================================
[   93.891609][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   93.898174][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0
[   93.906156][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   93.916222][    T0] Call Trace:
[   93.919489][    T0]  dump_stack+0x11d/0x187
[   93.923804][    T0]  panic+0x210/0x640
[   93.927699][    T0]  ? vprintk_func+0x89/0x13a
[   93.932263][    T0]  kcsan_report.cold+0xc/0x1a
[   93.936919][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[   93.942265][    T0]  tick_nohz_idle_stop_tick+0x191/0x680
[   93.947799][    T0]  do_idle+0x1ad/0x290
[   93.951843][    T0]  ? debug_smp_processor_id+0x3a/0x129
[   93.957277][    T0]  cpu_startup_entry+0x14/0x20
[   93.962012][    T0]  start_secondary+0x169/0x1b0
[   93.966750][    T0]  secondary_startup_64+0xa4/0xb0
[   93.972974][    T0] Kernel Offset: disabled
[   93.977288][    T0] Rebooting in 86400 seconds..