[  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 '10.128.10.21' (ECDSA) to the list of known hosts.
2020/04/15 17:45:03 fuzzer started
syzkaller login: [   48.272222][ T6707] as (6707) used greatest stack depth: 10848 bytes left
2020/04/15 17:45:05 dialing manager at 10.128.0.105:45511
2020/04/15 17:45:07 syscalls: 2960
2020/04/15 17:45:07 code coverage: enabled
2020/04/15 17:45:07 comparison tracing: enabled
2020/04/15 17:45:07 extra coverage: enabled
2020/04/15 17:45:07 setuid sandbox: enabled
2020/04/15 17:45:07 namespace sandbox: enabled
2020/04/15 17:45:07 Android sandbox: /sys/fs/selinux/policy does not exist
2020/04/15 17:45:07 fault injection: enabled
2020/04/15 17:45:07 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/04/15 17:45:07 net packet injection: enabled
2020/04/15 17:45:07 net device setup: enabled
2020/04/15 17:45:07 concurrency sanitizer: enabled
2020/04/15 17:45:07 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/04/15 17:45:07 USB emulation: /dev/raw-gadget does not exist
[   51.265467][ T6714] KCSAN: could not find function: '_find_next_bit'
2020/04/15 17:45:08 adding functions to KCSAN blacklist: '_find_next_bit' 'generic_fillattr' 'generic_write_end' 'page_counter_charge' 'shmem_file_read_iter' 'blk_mq_get_request' 'blk_mq_dispatch_rq_list' 'find_get_pages_range_tag' 'ep_poll' 'pcpu_alloc' '__ext4_new_inode' 
[   74.040947][    T0] ==================================================================
[   74.049125][    T0] BUG: KCSAN: data-race in tick_nohz_next_event / tick_sched_do_timer
[   74.057279][    T0] 
[   74.059658][    T0] write to 0xffffffff85f0ef50 of 4 bytes by interrupt on cpu 0:
[   74.067390][    T0]  tick_sched_do_timer+0xb4/0xd0
[   74.072329][    T0]  tick_sched_timer+0x3f/0xd0
[   74.076993][    T0]  __hrtimer_run_queues+0x271/0x600
[   74.082184][    T0]  hrtimer_interrupt+0x226/0x490
[   74.087225][    T0]  smp_apic_timer_interrupt+0xd8/0x270
[   74.092688][    T0]  apic_timer_interrupt+0xf/0x20
[   74.097608][    T0]  native_safe_halt+0xe/0x10
[   74.102183][    T0]  default_idle+0x21/0x170
[   74.106586][    T0]  do_idle+0x1b7/0x290
[   74.110633][    T0]  cpu_startup_entry+0x14/0x20
[   74.115388][    T0]  rest_init+0xe4/0xeb
[   74.119474][    T0]  arch_call_rest_init+0x13/0x2b
[   74.124411][    T0]  start_kernel+0x82d/0x852
[   74.128903][    T0]  secondary_startup_64+0xa4/0xb0
[   74.133908][    T0] 
[   74.136233][    T0] read to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 1:
[   74.143529][    T0]  tick_nohz_next_event+0x181/0x340
[   74.148731][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[   74.154409][    T0]  do_idle+0x1ad/0x290
[   74.158477][    T0]  cpu_startup_entry+0x14/0x20
[   74.163237][    T0]  start_secondary+0x169/0x1b0
[   74.168105][    T0]  secondary_startup_64+0xa4/0xb0
[   74.173105][    T0] 
[   74.175417][    T0] Reported by Kernel Concurrency Sanitizer on:
[   74.181556][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0
[   74.189430][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   74.199466][    T0] ==================================================================
[   74.207529][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   74.214131][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0
[   74.222022][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   74.232178][    T0] Call Trace:
[   74.235468][    T0]  dump_stack+0x11d/0x187
[   74.239799][    T0]  panic+0x210/0x640
[   74.243705][    T0]  ? vprintk_func+0x89/0x13a
[   74.248297][    T0]  kcsan_report.cold+0xc/0x1a
[   74.252967][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[   74.258339][    T0]  tick_nohz_next_event+0x181/0x340
[   74.263532][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[   74.269079][    T0]  ? rcu_dynticks_eqs_exit+0x2c/0x60
[   74.274366][    T0]  ? debug_smp_processor_id+0x3f/0x129
[   74.279822][    T0]  do_idle+0x1ad/0x290
[   74.283904][    T0]  ? debug_smp_processor_id+0x3a/0x129
[   74.289392][    T0]  cpu_startup_entry+0x14/0x20
[   74.294171][    T0]  start_secondary+0x169/0x1b0
[   74.298949][    T0]  secondary_startup_64+0xa4/0xb0
[   74.305108][    T0] Kernel Offset: disabled
[   74.309432][    T0] Rebooting in 86400 seconds..