[  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 '10.128.0.211' (ECDSA) to the list of known hosts.
2020/04/29 10:48:04 fuzzer started
2020/04/29 10:48:06 dialing manager at 10.128.0.105:32823
2020/04/29 10:48:06 syscalls: 2960
2020/04/29 10:48:06 code coverage: enabled
2020/04/29 10:48:06 comparison tracing: enabled
2020/04/29 10:48:06 extra coverage: enabled
2020/04/29 10:48:06 setuid sandbox: enabled
2020/04/29 10:48:06 namespace sandbox: enabled
2020/04/29 10:48:06 Android sandbox: /sys/fs/selinux/policy does not exist
2020/04/29 10:48:06 fault injection: enabled
2020/04/29 10:48:06 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/04/29 10:48:06 net packet injection: enabled
2020/04/29 10:48:06 net device setup: enabled
2020/04/29 10:48:06 concurrency sanitizer: enabled
2020/04/29 10:48:06 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/04/29 10:48:06 USB emulation: /dev/raw-gadget does not exist
syzkaller login: [   47.927705][ T6753] KCSAN: could not find function: '_find_next_bit'
2020/04/29 10:48:09 adding functions to KCSAN blacklist: 'add_timer' 'run_timer_softirq' 'page_counter_charge' 'do_exit' 'generic_fillattr' 'xas_clear_mark' 'futex_wait_queue_me' '__x64_sys_ptrace' 'dd_has_work' 'xas_find_marked' 'ep_poll' '_find_next_bit' 'ext4_mark_iloc_dirty' 'mod_timer' 'ext4_free_inodes_count' 'blk_mq_get_request' 'generic_write_end' '__ext4_new_inode' 'tick_nohz_idle_stop_tick' 'wbt_done' 'copy_process' 'find_get_pages_range_tag' 'do_nanosleep' 'echo_char' '__get_user_pages' 
[   76.739557][    T0] ==================================================================
[   76.747697][    T0] BUG: KCSAN: data-race in tick_nohz_next_event / tick_sched_do_timer
[   76.755870][    T0] 
[   76.758190][    T0] write to 0xffffffff85f0ef50 of 4 bytes by interrupt on cpu 1:
[   76.765807][    T0]  tick_sched_do_timer+0xb4/0xd0
[   76.770892][    T0]  tick_sched_timer+0x3f/0xd0
[   76.775560][    T0]  __hrtimer_run_queues+0x271/0x600
[   76.780742][    T0]  hrtimer_interrupt+0x226/0x490
[   76.785874][    T0]  smp_apic_timer_interrupt+0xd8/0x270
[   76.791315][    T0]  apic_timer_interrupt+0xf/0x20
[   76.796232][    T0] 
[   76.798546][    T0] read to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 0:
[   76.805806][    T0]  tick_nohz_next_event+0x181/0x340
[   76.810979][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[   76.816510][    T0]  do_idle+0x1ad/0x290
[   76.820551][    T0]  cpu_startup_entry+0x14/0x20
[   76.825296][    T0]  rest_init+0xe4/0xeb
[   76.829345][    T0]  arch_call_rest_init+0x13/0x2b
[   76.834364][    T0]  start_kernel+0x82d/0x852
[   76.838843][    T0]  secondary_startup_64+0xa4/0xb0
[   76.844192][    T0] 
[   76.846600][    T0] Reported by Kernel Concurrency Sanitizer on:
[   76.852752][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[   76.860615][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   76.870905][    T0] ==================================================================
[   76.879085][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   76.885665][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[   76.893527][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   76.903565][    T0] Call Trace:
[   76.906846][    T0]  dump_stack+0x11d/0x187
[   76.911155][    T0]  panic+0x210/0x640
[   76.915027][    T0]  ? vprintk_func+0x89/0x13a
[   76.919607][    T0]  kcsan_report.cold+0xc/0x1a
[   76.924276][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[   76.929818][    T0]  tick_nohz_next_event+0x181/0x340
[   76.934998][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[   76.940533][    T0]  ? ktime_get+0x1c9/0x210
[   76.944944][    T0]  ? debug_smp_processor_id+0x3f/0x129
[   76.950527][    T0]  do_idle+0x1ad/0x290
[   76.954570][    T0]  ? do_idle+0x6/0x290
[   76.958630][    T0]  cpu_startup_entry+0x14/0x20
[   76.963374][    T0]  rest_init+0xe4/0xeb
[   76.967437][    T0]  arch_call_rest_init+0x13/0x2b
[   76.972420][    T0]  start_kernel+0x82d/0x852
[   76.976914][    T0]  secondary_startup_64+0xa4/0xb0
[   76.983541][    T0] Kernel Offset: disabled
[   76.987945][    T0] Rebooting in 86400 seconds..