[  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 '10.128.1.22' (ECDSA) to the list of known hosts.
2020/06/13 23:46:33 fuzzer started
2020/06/13 23:46:34 dialing manager at 10.128.0.105:38693
2020/06/13 23:46:34 syscalls: 3085
2020/06/13 23:46:34 code coverage: enabled
2020/06/13 23:46:34 comparison tracing: enabled
2020/06/13 23:46:34 extra coverage: enabled
2020/06/13 23:46:34 setuid sandbox: enabled
2020/06/13 23:46:34 namespace sandbox: enabled
2020/06/13 23:46:34 Android sandbox: /sys/fs/selinux/policy does not exist
2020/06/13 23:46:34 fault injection: enabled
2020/06/13 23:46:34 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/06/13 23:46:34 net packet injection: enabled
2020/06/13 23:46:34 net device setup: enabled
2020/06/13 23:46:34 concurrency sanitizer: enabled
2020/06/13 23:46:34 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/06/13 23:46:34 USB emulation: enabled
syzkaller login: [   52.069564][ T8910] KCSAN: could not find function: '_find_next_bit'
2020/06/13 23:46:36 adding functions to KCSAN blacklist: 'filemap_map_pages' 'ep_poll' '__perf_event_overflow' 'generic_write_end' 'add_timer' '_find_next_bit' 'copy_process' '__send_signal' 'futex_wait_queue_me' 'xas_clear_mark' 'mod_timer' '__ext4_new_inode' 'ext4_free_inodes_count' 'blk_mq_dispatch_rq_list' 'do_nanosleep' 'blk_mq_get_request' 'alloc_pid' 'find_get_pages_range_tag' 'generic_fillattr' 
[   91.825704][    T0] ==================================================================
[   91.833824][    T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_next_event
[   91.842422][    T0] 
[   91.844730][    T0] write to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 1:
[   91.852093][    T0]  tick_nohz_idle_stop_tick+0x52c/0x680
[   91.857613][    T0]  do_idle+0x1ad/0x290
[   91.861658][    T0]  cpu_startup_entry+0x14/0x20
[   91.866419][    T0]  start_secondary+0x169/0x1b0
[   91.871193][    T0]  secondary_startup_64+0xa4/0xb0
[   91.876273][    T0] 
[   91.878589][    T0] read to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 0:
[   91.885848][    T0]  tick_nohz_next_event+0x181/0x340
[   91.891035][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[   91.896555][    T0]  do_idle+0x1ad/0x290
[   91.900599][    T0]  cpu_startup_entry+0x14/0x20
[   91.905346][    T0]  rest_init+0xe4/0xeb
[   91.909458][    T0]  arch_call_rest_init+0x13/0x2b
[   91.914366][    T0]  start_kernel+0x7fe/0x823
[   91.918843][    T0]  secondary_startup_64+0xa4/0xb0
[   91.923876][    T0] 
[   91.926177][    T0] Reported by Kernel Concurrency Sanitizer on:
[   91.932307][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[   91.940245][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   91.950341][    T0] ==================================================================
[   91.958402][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   91.964987][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[   91.972855][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   91.982884][    T0] Call Trace:
[   91.986214][    T0]  dump_stack+0x11d/0x187
[   91.992117][    T0]  panic+0x210/0x640
[   91.996047][    T0]  ? vprintk_func+0x89/0x13a
[   92.000675][    T0]  kcsan_report.cold+0xc/0x1a
[   92.005393][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[   92.010759][    T0]  tick_nohz_next_event+0x181/0x340
[   92.015937][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[   92.021458][    T0]  ? ktime_get+0x1c9/0x210
[   92.025866][    T0]  ? debug_smp_processor_id+0x3f/0x129
[   92.031313][    T0]  do_idle+0x1ad/0x290
[   92.035369][    T0]  ? debug_smp_processor_id+0x3a/0x129
[   92.040813][    T0]  cpu_startup_entry+0x14/0x20
[   92.045564][    T0]  rest_init+0xe4/0xeb
[   92.049636][    T0]  ? trace_init_perf_perm_irq_work_exit+0xe/0xe
[   92.055871][    T0]  arch_call_rest_init+0x13/0x2b
[   92.060784][    T0]  start_kernel+0x7fe/0x823
[   92.065267][    T0]  secondary_startup_64+0xa4/0xb0
[   92.071844][    T0] Kernel Offset: disabled
[   92.078765][    T0] Rebooting in 86400 seconds..