Warning: Permanently added '10.128.0.225' (ECDSA) to the list of known hosts.
2020/06/19 20:50:19 fuzzer started
2020/06/19 20:50:20 dialing manager at 10.128.0.105:38669
2020/06/19 20:50:20 syscalls: 3092
2020/06/19 20:50:20 code coverage: enabled
2020/06/19 20:50:20 comparison tracing: enabled
2020/06/19 20:50:20 extra coverage: enabled
2020/06/19 20:50:20 setuid sandbox: enabled
2020/06/19 20:50:20 namespace sandbox: enabled
2020/06/19 20:50:20 Android sandbox: /sys/fs/selinux/policy does not exist
2020/06/19 20:50:20 fault injection: enabled
2020/06/19 20:50:20 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/06/19 20:50:20 net packet injection: enabled
2020/06/19 20:50:20 net device setup: enabled
2020/06/19 20:50:20 concurrency sanitizer: enabled
2020/06/19 20:50:20 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/06/19 20:50:20 USB emulation: enabled
2020/06/19 20:50:21 suppressing KCSAN reports in functions: 'page_counter_charge' '__delayacct_blkio_end' 'n_tty_receive_buf_common' 'blk_mq_sched_dispatch_requests' '__ext4_update_other_inode_time' '__xa_clear_mark' 'ext4_free_inodes_count' 'expire_timers' 'complete_signal' 'io_sq_thread' 'blk_mq_dispatch_rq_list' 'generic_write_end' 'find_get_pages_range_tag' 'do_epoll_wait' 'ext4_free_inode' '__ext4_new_inode' 'ext4_ext_insert_extent' 'blk_mq_rq_ctx_init' 'alloc_pid' 'pcpu_alloc' 
syzkaller login: [   33.512193][    T0] ==================================================================
[   33.520345][    T0] BUG: KCSAN: data-race in tick_nohz_stop_tick / tick_nohz_stop_tick
[   33.528377][    T0] 
[   33.530693][    T0] write to 0xffffffff87f50690 of 4 bytes by task 0 on cpu 0:
[   33.538044][    T0]  tick_nohz_stop_tick+0xa0/0x440
[   33.543056][    T0]  tick_nohz_idle_stop_tick+0xf2/0x1c0
[   33.548499][    T0]  do_idle+0x1ac/0x320
[   33.552549][    T0]  cpu_startup_entry+0x15/0x20
[   33.557299][    T0]  rest_init+0xd8/0xe0
[   33.561354][    T0]  arch_call_rest_init+0xa/0xb
[   33.566105][    T0]  start_kernel+0x608/0x6d0
[   33.570607][    T0]  secondary_startup_64+0xa4/0xb0
[   33.575608][    T0] 
[   33.577931][    T0] read to 0xffffffff87f50690 of 4 bytes by task 0 on cpu 1:
[   33.585202][    T0]  tick_nohz_stop_tick+0x7a/0x440
[   33.590213][    T0]  tick_nohz_idle_stop_tick+0xf2/0x1c0
[   33.595653][    T0]  do_idle+0x1ac/0x320
[   33.600316][    T0]  cpu_startup_entry+0x15/0x20
[   33.605065][    T0]  start_secondary+0xe3/0x110
[   33.609727][    T0]  secondary_startup_64+0xa4/0xb0
[   33.614727][    T0] 
[   33.617035][    T0] Reported by Kernel Concurrency Sanitizer on:
[   33.623174][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.8.0-rc1-syzkaller #0
[   33.632604][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   33.642638][    T0] ==================================================================
[   33.650664][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   33.657233][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.8.0-rc1-syzkaller #0
[   33.665098][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   33.675131][    T0] Call Trace:
[   33.678408][    T0]  dump_stack+0x10f/0x19d
[   33.682721][    T0]  panic+0x1f8/0x63a
[   33.686634][    T0]  ? vprintk_emit+0x44a/0x4f0
[   33.691293][    T0]  kcsan_report+0x684/0x690
[   33.695782][    T0]  ? kcsan_setup_watchpoint+0x453/0x4d0
[   33.701327][    T0]  ? tick_nohz_stop_tick+0x7a/0x440
[   33.706530][    T0]  ? tick_nohz_idle_stop_tick+0xf2/0x1c0
[   33.712142][    T0]  ? do_idle+0x1ac/0x320
[   33.716367][    T0]  ? cpu_startup_entry+0x15/0x20
[   33.721287][    T0]  ? start_secondary+0xe3/0x110
[   33.726119][    T0]  ? secondary_startup_64+0xa4/0xb0
[   33.731308][    T0]  ? hrtimer_next_event_without+0x3f6/0x410
[   33.737183][    T0]  ? check_preemption_disabled+0x3f/0x1a0
[   33.742910][    T0]  kcsan_setup_watchpoint+0x453/0x4d0
[   33.748269][    T0]  tick_nohz_stop_tick+0x7a/0x440
[   33.753282][    T0]  ? check_preemption_disabled+0x3f/0x1a0
[   33.759068][    T0]  tick_nohz_idle_stop_tick+0xf2/0x1c0
[   33.764507][    T0]  do_idle+0x1ac/0x320
[   33.768559][    T0]  cpu_startup_entry+0x15/0x20
[   33.773307][    T0]  start_secondary+0xe3/0x110
[   33.777966][    T0]  secondary_startup_64+0xa4/0xb0
[   33.784162][    T0] Kernel Offset: disabled
[   33.788518][    T0] Rebooting in 86400 seconds..