[  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 '10.128.0.100' (ECDSA) to the list of known hosts.
2020/04/26 08:14:13 fuzzer started
syzkaller login: [   45.175963][ T6691] as (6691) used greatest stack depth: 10440 bytes left
2020/04/26 08:14:15 dialing manager at 10.128.0.105:35849
2020/04/26 08:14:21 syscalls: 2960
2020/04/26 08:14:21 code coverage: enabled
2020/04/26 08:14:21 comparison tracing: enabled
2020/04/26 08:14:21 extra coverage: enabled
2020/04/26 08:14:21 setuid sandbox: enabled
2020/04/26 08:14:21 namespace sandbox: enabled
2020/04/26 08:14:21 Android sandbox: /sys/fs/selinux/policy does not exist
2020/04/26 08:14:21 fault injection: enabled
2020/04/26 08:14:21 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/04/26 08:14:21 net packet injection: enabled
2020/04/26 08:14:21 net device setup: enabled
2020/04/26 08:14:21 concurrency sanitizer: enabled
2020/04/26 08:14:21 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/04/26 08:14:21 USB emulation: /dev/raw-gadget does not exist
2020/04/26 08:14:22 adding functions to KCSAN blacklist: 'ep_poll' 'ext4_free_inodes_count' 'do_nanosleep' '__ext4_new_inode' 'run_timer_softirq' 'mod_timer' 'generic_write_end' 'ktime_get_real_seconds' 'pcpu_alloc' 'copy_process' 'find_get_pages_range_tag' 
[   86.926323][    T0] ==================================================================
[   86.934562][    T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_idle_stop_tick
[   86.943482][    T0] 
[   86.945813][    T0] write to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 1:
[   86.953179][    T0]  tick_nohz_idle_stop_tick+0x52c/0x680
[   86.958718][    T0]  do_idle+0x1ad/0x290
[   86.962779][    T0]  cpu_startup_entry+0x14/0x20
[   86.967736][    T0]  start_secondary+0x169/0x1b0
[   86.972498][    T0]  secondary_startup_64+0xa4/0xb0
[   86.977505][    T0] 
[   86.979832][    T0] read to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 0:
[   86.987111][    T0]  tick_nohz_idle_stop_tick+0x191/0x680
[   86.992650][    T0]  do_idle+0x1ad/0x290
[   86.996715][    T0]  cpu_startup_entry+0x14/0x20
[   87.001479][    T0]  rest_init+0xe4/0xeb
[   87.005550][    T0]  arch_call_rest_init+0x13/0x2b
[   87.010490][    T0]  start_kernel+0x82d/0x852
[   87.014993][    T0]  secondary_startup_64+0xa4/0xb0
[   87.019997][    T0] 
[   87.022322][    T0] Reported by Kernel Concurrency Sanitizer on:
[   87.028473][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[   87.036438][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   87.046484][    T0] ==================================================================
[   87.054531][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   87.061145][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[   87.069034][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   87.079084][    T0] Call Trace:
[   87.082374][    T0]  dump_stack+0x11d/0x187
[   87.086718][    T0]  panic+0x210/0x640
[   87.090602][    T0]  ? vprintk_func+0x89/0x13a
[   87.095299][    T0]  kcsan_report.cold+0xc/0x1a
[   87.100026][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[   87.105439][    T0]  tick_nohz_idle_stop_tick+0x191/0x680
[   87.110986][    T0]  do_idle+0x1ad/0x290
[   87.115052][    T0]  ? debug_smp_processor_id+0x3a/0x129
[   87.120492][    T0]  cpu_startup_entry+0x14/0x20
[   87.125250][    T0]  rest_init+0xe4/0xeb
[   87.129337][    T0]  arch_call_rest_init+0x13/0x2b
[   87.134299][    T0]  start_kernel+0x82d/0x852
[   87.138808][    T0]  secondary_startup_64+0xa4/0xb0
[   87.145413][    T0] Kernel Offset: disabled
[   87.149788][    T0] Rebooting in 86400 seconds..