Warning: Permanently added '10.128.0.52' (ECDSA) to the list of known hosts. 2020/07/03 04:52:14 fuzzer started 2020/07/03 04:52:14 dialing manager at 10.128.0.105:43163 2020/07/03 04:52:14 syscalls: 3106 2020/07/03 04:52:14 code coverage: enabled 2020/07/03 04:52:14 comparison tracing: enabled 2020/07/03 04:52:14 extra coverage: enabled 2020/07/03 04:52:14 setuid sandbox: enabled 2020/07/03 04:52:14 namespace sandbox: enabled 2020/07/03 04:52:14 Android sandbox: /sys/fs/selinux/policy does not exist 2020/07/03 04:52:14 fault injection: enabled 2020/07/03 04:52:14 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/07/03 04:52:14 net packet injection: enabled 2020/07/03 04:52:14 net device setup: enabled 2020/07/03 04:52:14 concurrency sanitizer: enabled 2020/07/03 04:52:14 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/07/03 04:52:14 USB emulation: enabled 2020/07/03 04:52:17 suppressing KCSAN reports in functions: 'alloc_pid' 'blk_mq_sched_dispatch_requests' 'page_counter_charge' 'do_nanosleep' 'snd_seq_check_queue' '__blkdev_put' 'exit_mm' 'blk_mq_dispatch_rq_list' 'get_cpu_iowait_time_us' '__add_to_page_cache_locked' '__xa_clear_mark' 'ext4_free_inode' 'do_sys_poll' 'blk_stat_add' 'futex_wait_queue_me' 'do_syslog' 'bpf_lru_pop_free' 'find_get_pages_range_tag' 'ext4_free_inodes_count' 'dd_has_work' 'ext4_writepages' 'ext4_mb_regular_allocator' 'kauditd_thread' '__blkdev_get' 'expire_timers' 'io_sq_thread' '__delayacct_blkio_end' 'shmem_file_read_iter' '__ext4_new_inode' '__mod_timer' 'generic_write_end' 'complete_signal' 'copy_process' 'do_signal_stop' 'ext4_mark_iloc_dirty' 'n_tty_receive_buf_common' 'shmem_unlink' 'pcpu_alloc' 'blk_mq_rq_ctx_init' '__ext4_update_other_inode_time' '__filemap_fdatawrite_range' 'step_into' 'xas_clear_mark' 'generic_file_buffered_read' 'ondemand_readahead' 'filemap_map_pages' 'do_epoll_wait' 'get_signal' 'tick_sched_timer' [ 72.256501][ C1] ================================================================== [ 72.264741][ C1] BUG: KCSAN: data-race in add_timer_on / timer_clear_idle [ 72.271901][ C1] [ 72.274262][ C1] write to 0xffff88812c01cb24 of 1 bytes by task 0 on cpu 0: [ 72.282466][ C1] timer_clear_idle+0x2e/0x40 [ 72.287248][ C1] tick_nohz_idle_retain_tick+0x3e/0x40 [ 72.292763][ C1] do_idle+0x287/0x310 [ 72.296801][ C1] cpu_startup_entry+0x15/0x20 [ 72.301558][ C1] rest_init+0xd8/0xe0 [ 72.305596][ C1] arch_call_rest_init+0xa/0xb [ 72.310327][ C1] start_kernel+0x608/0x6d0 [ 72.314798][ C1] secondary_startup_64+0xa4/0xb0 [ 72.319784][ C1] [ 72.322082][ C1] read to 0xffff88812c01cb24 of 1 bytes by interrupt on cpu 1: [ 72.329598][ C1] add_timer_on+0x218/0x360 [ 72.334074][ C1] clocksource_watchdog+0x729/0x760 [ 72.339237][ C1] call_timer_fn+0x30/0x2a0 [ 72.343706][ C1] expire_timers+0x116/0x290 [ 72.348261][ C1] __run_timers+0x443/0x500 [ 72.352732][ C1] run_timer_softirq+0x2e/0x60 [ 72.357460][ C1] __do_softirq+0x198/0x360 [ 72.361932][ C1] run_ksoftirqd+0x2f/0x60 [ 72.366314][ C1] smpboot_thread_fn+0x347/0x530 [ 72.371306][ C1] kthread+0x20d/0x230 [ 72.375345][ C1] ret_from_fork+0x1f/0x30 [ 72.379724][ C1] [ 72.382022][ C1] Reported by Kernel Concurrency Sanitizer on: [ 72.388170][ C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.8.0-rc3-syzkaller #0 [ 72.396283][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.406306][ C1] ================================================================== [ 72.414334][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 72.420886][ C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.8.0-rc3-syzkaller #0 [ 72.429022][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.439505][ C1] Call Trace: [ 72.442765][ C1] dump_stack+0x10f/0x19d [ 72.447059][ C1] panic+0x207/0x64a [ 72.450928][ C1] ? vprintk_emit+0x44a/0x4f0 [ 72.455574][ C1] kcsan_report+0x684/0x690 [ 72.460047][ C1] ? kcsan_setup_watchpoint+0x453/0x4d0 [ 72.465561][ C1] ? add_timer_on+0x218/0x360 [ 72.470208][ C1] ? clocksource_watchdog+0x729/0x760 [ 72.475547][ C1] ? call_timer_fn+0x30/0x2a0 [ 72.480191][ C1] ? expire_timers+0x116/0x290 [ 72.484919][ C1] ? __run_timers+0x443/0x500 [ 72.489565][ C1] ? run_timer_softirq+0x2e/0x60 [ 72.494474][ C1] ? __do_softirq+0x198/0x360 [ 72.499123][ C1] ? run_ksoftirqd+0x2f/0x60 [ 72.503681][ C1] ? smpboot_thread_fn+0x347/0x530 [ 72.508758][ C1] ? kthread+0x20d/0x230 [ 72.512995][ C1] ? ret_from_fork+0x1f/0x30 [ 72.517580][ C1] kcsan_setup_watchpoint+0x453/0x4d0 [ 72.522921][ C1] ? virtqueue_kick_prepare+0x1fe/0x240 [ 72.528435][ C1] add_timer_on+0x218/0x360 [ 72.532910][ C1] clocksource_watchdog+0x729/0x760 [ 72.538078][ C1] ? __clocksource_select+0x340/0x340 [ 72.543414][ C1] call_timer_fn+0x30/0x2a0 [ 72.547886][ C1] ? __clocksource_select+0x340/0x340 [ 72.553225][ C1] expire_timers+0x116/0x290 [ 72.557783][ C1] __run_timers+0x443/0x500 [ 72.562257][ C1] ? debug_smp_processor_id+0x18/0x20 [ 72.567596][ C1] ? __x64_sys_wait4+0xba/0x100 [ 72.572432][ C1] ? sched_clock+0xf/0x20 [ 72.576731][ C1] run_timer_softirq+0x2e/0x60 [ 72.581461][ C1] __do_softirq+0x198/0x360 [ 72.585946][ C1] ? ksoftirqd_should_run+0x20/0x20 [ 72.591108][ C1] run_ksoftirqd+0x2f/0x60 [ 72.595489][ C1] smpboot_thread_fn+0x347/0x530 [ 72.600393][ C1] ? cpu_report_death+0x80/0x80 [ 72.605208][ C1] kthread+0x20d/0x230 [ 72.609259][ C1] ? cpu_report_death+0x80/0x80 [ 72.614077][ C1] ? kthread_blkcg+0x80/0x80 [ 72.618647][ C1] ret_from_fork+0x1f/0x30 [ 73.734751][ C1] Shutting down cpus with NMI [ 73.740510][ C1] Kernel Offset: disabled [ 73.744843][ C1] Rebooting in 86400 seconds..