[  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 '10.128.0.217' (ECDSA) to the list of known hosts.
2020/12/13 18:37:05 fuzzer started
2020/12/13 18:37:05 dialing manager at 10.128.0.105:34647
2020/12/13 18:37:05 syscalls: 3464
2020/12/13 18:37:05 code coverage: enabled
2020/12/13 18:37:05 comparison tracing: enabled
2020/12/13 18:37:05 extra coverage: enabled
2020/12/13 18:37:05 setuid sandbox: enabled
2020/12/13 18:37:05 namespace sandbox: enabled
2020/12/13 18:37:05 Android sandbox: /sys/fs/selinux/policy does not exist
2020/12/13 18:37:05 fault injection: enabled
2020/12/13 18:37:05 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/12/13 18:37:05 net packet injection: enabled
2020/12/13 18:37:05 net device setup: enabled
2020/12/13 18:37:05 concurrency sanitizer: enabled
2020/12/13 18:37:05 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/12/13 18:37:05 USB emulation: enabled
2020/12/13 18:37:05 hci packet injection: enabled
2020/12/13 18:37:05 wifi device emulation: enabled
2020/12/13 18:37:07 suppressing KCSAN reports in functions: 'blk_mq_dispatch_rq_list' 'dd_has_work' 'pcpu_alloc' 'audit_log_start' 'blk_mq_rq_ctx_init' '__ext4_new_inode' 'alloc_pid' 'kauditd_thread' '__xa_clear_mark' 'find_get_pages_range_tag' '__add_to_page_cache_locked' 'blk_mq_sched_dispatch_requests' 'ext4_free_inode' 'generic_write_end' '__io_cqring_fill_event' 'ext4_mb_regular_allocator' 
syzkaller login: [   35.256397][    T0] ==================================================================
[   35.256421][    T0] BUG: KCSAN: data-race in tick_nohz_next_event / tick_sched_timer
[   35.256422][    T0] 
[   35.256431][    T0] write to 0xffffffff86fc1a50 of 4 bytes by interrupt on cpu 1:
[   35.256439][    T0]  tick_sched_timer+0x1f5/0x210
[   35.256449][    T0]  __run_hrtimer+0x133/0x420
[   35.256464][    T0]  hrtimer_interrupt+0x36e/0xa10
[   35.296753][    T0]  __sysvec_apic_timer_interrupt+0x6f/0x200
[   35.302640][    T0]  sysvec_apic_timer_interrupt+0x6f/0x90
[   35.308247][    T0]  asm_sysvec_apic_timer_interrupt+0x12/0x20
[   35.314195][    T0] 
[   35.316500][    T0] read to 0xffffffff86fc1a50 of 4 bytes by task 0 on cpu 0:
[   35.323770][    T0]  tick_nohz_next_event+0x217/0x300
[   35.328951][    T0]  tick_nohz_get_sleep_length+0x121/0x270
[   35.334638][    T0]  menu_select+0x2fa/0xf40
[   35.339025][    T0]  cpuidle_select+0x3d/0x50
[   35.343504][    T0]  do_idle+0x15f/0x230
[   35.347543][    T0]  cpu_startup_entry+0x15/0x20
[   35.352273][    T0]  rest_init+0xd7/0xe0
[   35.356313][    T0]  arch_call_rest_init+0xa/0xb
[   35.361045][    T0]  start_kernel+0x5a0/0x625
[   35.365534][    T0]  secondary_startup_64_no_verify+0xb0/0xbb
[   35.371421][    T0] 
[   35.373720][    T0] Reported by Kernel Concurrency Sanitizer on:
[   35.379843][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.10.0-rc7-syzkaller #0
[   35.387784][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   35.397810][    T0] ==================================================================
[   35.405840][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   35.412414][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.10.0-rc7-syzkaller #0
[   35.420375][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   35.430414][    T0] Call Trace:
[   35.433676][    T0]  dump_stack+0x116/0x15d
[   35.438113][    T0]  panic+0x1e7/0x5fa
[   35.441987][    T0]  ? vprintk_emit+0x2f2/0x370
[   35.446642][    T0]  kcsan_report+0x67b/0x680
[   35.451181][    T0]  ? kcsan_setup_watchpoint+0x46a/0x4d0
[   35.456709][    T0]  ? tick_nohz_next_event+0x217/0x300
[   35.462053][    T0]  ? tick_nohz_get_sleep_length+0x121/0x270
[   35.467921][    T0]  ? menu_select+0x2fa/0xf40
[   35.472493][    T0]  ? cpuidle_select+0x3d/0x50
[   35.477144][    T0]  ? do_idle+0x15f/0x230
[   35.481361][    T0]  ? cpu_startup_entry+0x15/0x20
[   35.486272][    T0]  ? rest_init+0xd7/0xe0
[   35.490515][    T0]  ? arch_call_rest_init+0xa/0xb
[   35.495425][    T0]  ? start_kernel+0x5a0/0x625
[   35.500088][    T0]  ? secondary_startup_64_no_verify+0xb0/0xbb
[   35.506128][    T0]  ? ktime_get+0x1b0/0x1e0
[   35.510513][    T0]  ? _raw_spin_lock_irqsave+0x25/0x90
[   35.515855][    T0]  kcsan_setup_watchpoint+0x46a/0x4d0
[   35.521198][    T0]  tick_nohz_next_event+0x217/0x300
[   35.526365][    T0]  tick_nohz_get_sleep_length+0x121/0x270
[   35.532066][    T0]  menu_select+0x2fa/0xf40
[   35.536460][    T0]  ? _raw_spin_unlock_irq+0x22/0x40
[   35.541650][    T0]  ? finish_task_switch+0x81/0x280
[   35.546750][    T0]  cpuidle_select+0x3d/0x50
[   35.551224][    T0]  do_idle+0x15f/0x230
[   35.555275][    T0]  cpu_startup_entry+0x15/0x20
[   35.560026][    T0]  rest_init+0xd7/0xe0
[   35.564074][    T0]  ? time_init+0xc/0xc
[   35.568114][    T0]  arch_call_rest_init+0xa/0xb
[   35.572847][    T0]  start_kernel+0x5a0/0x625
[   35.577320][    T0]  secondary_startup_64_no_verify+0xb0/0xbb
[   35.583786][    T0] Kernel Offset: disabled
[   35.588106][    T0] Rebooting in 86400 seconds..