Warning: Permanently added '10.128.1.5' (ECDSA) to the list of known hosts. 2019/10/30 13:26:01 fuzzer started 2019/10/30 13:26:02 dialing manager at 10.128.0.105:40771 2019/10/30 13:26:03 syscalls: 2540 2019/10/30 13:26:03 code coverage: enabled 2019/10/30 13:26:03 comparison tracing: enabled 2019/10/30 13:26:03 extra coverage: extra coverage is not supported by the kernel 2019/10/30 13:26:03 setuid sandbox: enabled 2019/10/30 13:26:03 namespace sandbox: enabled 2019/10/30 13:26:03 Android sandbox: /sys/fs/selinux/policy does not exist 2019/10/30 13:26:03 fault injection: enabled 2019/10/30 13:26:03 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/10/30 13:26:03 net packet injection: enabled 2019/10/30 13:26:03 net device setup: enabled 2019/10/30 13:26:03 concurrency sanitizer: enabled syzkaller login: [ 66.322026][ T7243] KCSAN: could not find function: 'poll_schedule_timeout' 2019/10/30 13:26:30 adding functions to KCSAN blacklist: 'rcu_gp_fqs_check_wake' 'bio_endio' '__find_get_block' 'update_defense_level' 'ext4_nonda_switch' 'ext4_da_write_end' 'get_signal' 'tcp_v4_rcv' 'flush_old_exec' 'pcpu_alloc' 'install_new_memslots' 'unix_release_sock' 'p9_poll_workfn' 'sk_wait_data' 'yama_ptracer_del' 'kernfs_refresh_inode' 'udp_set_dev_scratch' 'find_next_bit' 'queue_access_lock' 'pipe_poll' '__dentry_kill' 'tcp_ack' '__blk_queue_split' 'blk_mq_run_hw_queue' 'do_nanosleep' 'find_get_pages_range_tag' '__cgroup_account_cputime' 'atime_needs_update' 'handle_mm_fault' 'ktime_get_seconds' 'icmp_global_allow' 'do_syslog' 'dccp_rcv_reset' 'xprt_connect' 'n_tty_receive_buf_common' 'snd_seq_prioq_cell_out' '__dev_queue_xmit' 'ext4_mb_good_group' 'mem_cgroup_protected' 'alloc_pid' 'exit_signals' 'do_readlinkat' 'fsnotify' 'do_signal_stop' 'do_exit' 'tcp_poll' 'filemap_map_pages' 'timer_clear_idle' '__skb_try_recv_from_queue' 'ktime_get_with_offset' 'snd_ctl_notify' 'ktime_get_real_seconds' 'find_group_orlov' 'ext4_mark_iloc_dirty' '__hrtimer_run_queues' 'pipe_wait' 'xas_find_marked' '__nf_conntrack_find_get' 'ext4_free_inodes_count' 'sit_tunnel_xmit' 'blk_stat_add' 'relay_switch_subbuf' '__es_shrink' '__ext4_new_inode' 'getboottime64' 'kcm_wait_data' 'poll_schedule_timeout' 'copy_process' 'snd_seq_check_queue' 'tomoyo_supervisor' 'blk_mq_get_request' 'snapshot_refaults' 'shmem_file_read_iter' 'iput' 'delete_from_page_cache_batch' 'tcp_add_backlog' 'ep_poll' 'blk_mq_sched_dispatch_requests' 'blk_mq_dispatch_rq_list' 'echo_char' 'ip_finish_output2' '__delete_from_page_cache' 'list_lru_count_one' '__nf_ct_refresh_acct' 'wbt_done' 'tick_sched_do_timer' 'dd_has_work' 'ktime_get_ts64' 'dst_alloc' '__alloc_file' 'ext4_free_inode' 'get_task_cred' 'tick_nohz_idle_stop_tick' 'blk_mq_free_request' 'shmem_getpage_gfp' 'osq_lock' 'audit_log_start' '__mark_inode_dirty' 'commit_echoes' 'kauditd_thread' 'generic_permission' 'vm_area_dup' 'process_srcu' 'evict' 'ext4_writepages' 'page_counter_try_charge' '__snd_rawmidi_transmit_ack' '__skb_wait_for_more_packets' 'generic_file_read_iter' 'mem_cgroup_select_victim_node' 'inet_putpeer' 'task_dump_owner' 'mod_timer' 'ext4_has_free_clusters' 'd_alloc_parallel' 'generic_write_end' 'tick_do_update_jiffies64' 'rcu_gp_fqs_loop' 'pid_update_inode' 'list_lru_add' 'run_timer_softirq' 'add_timer' 'generic_fillattr' '__add_to_page_cache_locked' 'virtqueue_disable_cb' 'balance_dirty_pages' 'taskstats_exit' 'enqueue_timer' 'mm_update_next_owner' [ 117.944213][ T5] ================================================================== [ 117.952586][ T5] BUG: KCSAN: data-race in watchdog / worker_thread [ 117.959166][ T5] [ 117.961665][ T5] read to 0xffff88812b35d010 of 8 bytes by task 1061 on cpu 1: [ 117.969205][ T5] watchdog+0x2c3/0x7c0 [ 117.973435][ T5] kthread+0x1d4/0x200 [ 117.977497][ T5] ret_from_fork+0x1f/0x30 [ 117.981895][ T5] [ 117.984663][ T5] write to 0xffff88812b35d010 of 8 bytes by task 5 on cpu 0: [ 117.992030][ T5] worker_thread+0x1c3/0x800 [ 117.996632][ T5] kthread+0x1d4/0x200 [ 118.000694][ T5] ret_from_fork+0x1f/0x30 [ 118.005091][ T5] [ 118.007405][ T5] Reported by Kernel Concurrency Sanitizer on: [ 118.013553][ T5] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.4.0-rc3+ #0 [ 118.020821][ T5] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 118.030905][ T5] Workqueue: 0x0 (events_power_efficient) [ 118.036705][ T5] ================================================================== [ 118.044759][ T5] Kernel panic - not syncing: panic_on_warn set ... [ 118.051345][ T5] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.4.0-rc3+ #0 [ 118.058623][ T5] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 118.068993][ T5] Workqueue: 0x0 (events_power_efficient) [ 118.074822][ T5] Call Trace: [ 118.078145][ T5] dump_stack+0xf5/0x159 [ 118.082407][ T5] panic+0x210/0x640 [ 118.086315][ T5] ? vprintk_func+0x8d/0x140 [ 118.090915][ T5] kcsan_report.cold+0xc/0x10 [ 118.095597][ T5] __kcsan_setup_watchpoint+0x32e/0x4a0 [ 118.101147][ T5] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 118.107387][ T5] __tsan_write8+0x32/0x40 [ 118.111804][ T5] worker_thread+0x1c3/0x800 [ 118.116405][ T5] kthread+0x1d4/0x200 [ 118.120477][ T5] ? rescuer_thread+0x6a0/0x6a0 [ 118.125336][ T5] ? kthread_stop+0x2d0/0x2d0 [ 118.130025][ T5] ret_from_fork+0x1f/0x30 [ 118.135650][ T5] Kernel Offset: disabled [ 118.139976][ T5] Rebooting in 86400 seconds..