Warning: Permanently added '10.128.1.61' (ECDSA) to the list of known hosts. 2020/01/19 00:26:58 fuzzer started 2020/01/19 00:26:59 dialing manager at 10.128.0.105:36743 2020/01/19 00:27:16 syscalls: 2857 2020/01/19 00:27:16 code coverage: enabled 2020/01/19 00:27:16 comparison tracing: enabled 2020/01/19 00:27:16 extra coverage: enabled 2020/01/19 00:27:16 setuid sandbox: enabled 2020/01/19 00:27:16 namespace sandbox: enabled 2020/01/19 00:27:16 Android sandbox: /sys/fs/selinux/policy does not exist 2020/01/19 00:27:16 fault injection: enabled 2020/01/19 00:27:16 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/01/19 00:27:16 net packet injection: enabled 2020/01/19 00:27:16 net device setup: enabled 2020/01/19 00:27:16 concurrency sanitizer: enabled 2020/01/19 00:27:16 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/01/19 00:27:25 adding functions to KCSAN blacklist: 'sit_tunnel_xmit' '__hrtimer_run_queues' 'run_timer_softirq' '__ext4_new_inode' 'blk_mq_dispatch_rq_list' 'audit_log_start' '__writeback_single_inode' 'blk_mq_get_request' 'tick_do_update_jiffies64' 'packet_do_bind' 'pid_update_inode' 'wbt_issue' 'vm_area_dup' 'dst_alloc' 'blk_mq_run_hw_queue' 'ext4_free_inodes_count' 'rcu_gp_fqs_check_wake' 'ep_poll' 'add_timer' 'futex_wait_queue_me' '__dentry_kill' 'generic_file_read_iter' '__snd_rawmidi_transmit_ack' 'padata_find_next' 'page_counter_try_charge' 'do_signal_stop' 'blk_stat_add' 'n_tty_receive_buf_common' 'tick_nohz_idle_stop_tick' 'do_nanosleep' 'generic_fillattr' 'dd_has_work' 'pipe_double_lock' 'ktime_get_real_seconds' 'ext4_nonda_switch' 'xas_find_marked' 'ext4_free_inode' 'pcpu_alloc' '__process_echoes' 'find_get_pages_range_tag' 'shmem_file_read_iter' 'wbt_done' 'kcm_rcv_strparser' 'do_syslog' 'tick_sched_do_timer' 'process_srcu' 'blk_mq_sched_dispatch_requests' 'echo_char' 'kauditd_thread' 'mod_timer' 'find_next_bit' 'taskstats_exit' 'xas_clear_mark' 'mm_update_next_owner' '__perf_event_overflow' 'copy_process' 'generic_write_end' 'ext4_has_free_clusters' 'tomoyo_supervisor' 'rcu_gp_fqs_loop' syzkaller login: [ 116.832516][ T0] ================================================================== [ 116.840680][ T0] BUG: KCSAN: data-race in add_timer_on / timer_clear_idle [ 116.847870][ T0] [ 116.850205][ T0] read to 0xffff88812c11daa4 of 1 bytes by interrupt on cpu 0: [ 116.857754][ T0] add_timer_on+0x20e/0x2d0 [ 116.862435][ T0] clocksource_watchdog+0x63f/0x760 [ 116.867650][ T0] call_timer_fn+0x5f/0x2f0 [ 116.872165][ T0] run_timer_softirq+0xc0c/0xcd0 [ 116.877109][ T0] __do_softirq+0x115/0x33f [ 116.881626][ T0] run_ksoftirqd+0x46/0x60 [ 116.886299][ T0] smpboot_thread_fn+0x37d/0x4a0 [ 116.891370][ T0] kthread+0x1d4/0x200 [ 116.895452][ T0] ret_from_fork+0x1f/0x30 [ 116.899857][ T0] [ 116.902206][ T0] write to 0xffff88812c11daa4 of 1 bytes by task 0 on cpu 1: [ 116.909589][ T0] timer_clear_idle+0x42/0x50 [ 116.914279][ T0] __tick_nohz_idle_restart_tick+0x36/0x1b0 [ 116.922708][ T0] tick_nohz_idle_exit+0x1af/0x1e0 [ 116.927936][ T0] do_idle+0xb1/0x290 [ 116.931929][ T0] cpu_startup_entry+0x1b/0x20 [ 116.936709][ T0] start_secondary+0x168/0x1b0 [ 116.941478][ T0] secondary_startup_64+0xa4/0xb0 [ 116.946486][ T0] [ 116.948811][ T0] Reported by Kernel Concurrency Sanitizer on: [ 116.954984][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.5.0-rc1-syzkaller #0 [ 116.962867][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 116.972919][ T0] ================================================================== [ 116.980988][ T0] Kernel panic - not syncing: panic_on_warn set ... [ 116.987593][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.5.0-rc1-syzkaller #0 [ 116.995485][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 117.005624][ T0] Call Trace: [ 117.008944][ T0] dump_stack+0x11d/0x181 [ 117.013293][ T0] panic+0x210/0x640 [ 117.017207][ T0] ? vprintk_func+0x8d/0x140 [ 117.021815][ T0] kcsan_report.cold+0xc/0xd [ 117.026421][ T0] kcsan_setup_watchpoint+0x3fe/0x460 [ 117.031814][ T0] __tsan_unaligned_write1+0xc3/0x100 [ 117.037193][ T0] timer_clear_idle+0x42/0x50 [ 117.041992][ T0] __tick_nohz_idle_restart_tick+0x36/0x1b0 [ 117.047900][ T0] tick_nohz_idle_exit+0x1af/0x1e0 [ 117.053026][ T0] do_idle+0xb1/0x290 [ 117.057461][ T0] ? debug_smp_processor_id+0x3e/0x137 [ 117.062942][ T0] cpu_startup_entry+0x1b/0x20 [ 117.067716][ T0] start_secondary+0x168/0x1b0 [ 117.072505][ T0] secondary_startup_64+0xa4/0xb0 [ 117.078994][ T0] Kernel Offset: disabled [ 117.083315][ T0] Rebooting in 86400 seconds..