[  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 '10.128.1.51' (ECDSA) to the list of known hosts.
2020/04/18 15:18:51 fuzzer started
syzkaller login: [   44.446354][ T6716] as (6716) used greatest stack depth: 10840 bytes left
2020/04/18 15:18:53 dialing manager at 10.128.0.105:45083
2020/04/18 15:18:55 syscalls: 2960
2020/04/18 15:18:55 code coverage: enabled
2020/04/18 15:18:55 comparison tracing: enabled
2020/04/18 15:18:55 extra coverage: enabled
2020/04/18 15:18:55 setuid sandbox: enabled
2020/04/18 15:18:55 namespace sandbox: enabled
2020/04/18 15:18:55 Android sandbox: /sys/fs/selinux/policy does not exist
2020/04/18 15:18:55 fault injection: enabled
2020/04/18 15:18:55 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/04/18 15:18:55 net packet injection: enabled
2020/04/18 15:18:55 net device setup: enabled
2020/04/18 15:18:55 concurrency sanitizer: enabled
2020/04/18 15:18:55 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/04/18 15:18:55 USB emulation: /dev/raw-gadget does not exist
2020/04/18 15:18:56 adding functions to KCSAN blacklist: 'mod_timer' 'do_nanosleep' 'filemap_map_pages' '__ext4_new_inode' 'ep_poll' 'page_counter_charge' 'kauditd_thread' 'wbt_done' 'tick_nohz_idle_stop_tick' 'blk_mq_get_request' 'ext4_free_inodes_count' 'find_get_pages_range_tag' 'copy_process' '_find_next_bit' 'run_timer_softirq' 
[   48.842498][ T6724] KCSAN: could not find function: '_find_next_bit'
[   69.928620][    T0] ==================================================================
[   69.936788][    T0] BUG: KCSAN: data-race in tick_nohz_next_event / tick_sched_do_timer
[   69.945001][    T0] 
[   69.947312][    T0] write to 0xffffffff85f0ef50 of 4 bytes by interrupt on cpu 0:
[   69.954932][    T0]  tick_sched_do_timer+0xb4/0xd0
[   69.959853][    T0]  tick_sched_timer+0x3f/0xd0
[   69.964511][    T0]  __hrtimer_run_queues+0x271/0x600
[   69.969696][    T0]  hrtimer_interrupt+0x226/0x490
[   69.974629][    T0]  smp_apic_timer_interrupt+0xd8/0x270
[   69.980082][    T0]  apic_timer_interrupt+0xf/0x20
[   69.985011][    T0] 
[   69.987327][    T0] read to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 1:
[   69.994787][    T0]  tick_nohz_next_event+0x181/0x340
[   69.999968][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[   70.005504][    T0]  do_idle+0x1ad/0x290
[   70.009551][    T0]  cpu_startup_entry+0x14/0x20
[   70.015788][    T0]  start_secondary+0x169/0x1b0
[   70.020636][    T0]  secondary_startup_64+0xa4/0xb0
[   70.025648][    T0] 
[   70.027961][    T0] Reported by Kernel Concurrency Sanitizer on:
[   70.034095][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0
[   70.041958][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   70.051992][    T0] ==================================================================
[   70.060051][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   70.066738][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0
[   70.079059][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   70.089096][    T0] Call Trace:
[   70.092382][    T0]  dump_stack+0x11d/0x187
[   70.096695][    T0]  panic+0x210/0x640
[   70.100577][    T0]  ? vprintk_func+0x89/0x13a
[   70.105162][    T0]  kcsan_report.cold+0xc/0x1a
[   70.109846][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[   70.115220][    T0]  tick_nohz_next_event+0x181/0x340
[   70.120424][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[   70.125963][    T0]  ? ktime_get+0x1c9/0x210
[   70.130361][    T0]  ? debug_smp_processor_id+0x3f/0x129
[   70.135798][    T0]  do_idle+0x1ad/0x290
[   70.139858][    T0]  cpu_startup_entry+0x14/0x20
[   70.144630][    T0]  start_secondary+0x169/0x1b0
[   70.149383][    T0]  secondary_startup_64+0xa4/0xb0
[   70.156370][    T0] Kernel Offset: disabled
[   70.160708][    T0] Rebooting in 86400 seconds..