Warning: Permanently added '10.128.1.28' (ECDSA) to the list of known hosts. 2020/06/01 06:58:52 fuzzer started 2020/06/01 06:58:53 dialing manager at 10.128.0.105:33205 2020/06/01 06:58:53 syscalls: 3055 2020/06/01 06:58:53 code coverage: enabled 2020/06/01 06:58:53 comparison tracing: enabled 2020/06/01 06:58:53 extra coverage: enabled 2020/06/01 06:58:53 setuid sandbox: enabled 2020/06/01 06:58:53 namespace sandbox: enabled 2020/06/01 06:58:53 Android sandbox: /sys/fs/selinux/policy does not exist 2020/06/01 06:58:53 fault injection: enabled 2020/06/01 06:58:53 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/06/01 06:58:53 net packet injection: enabled 2020/06/01 06:58:53 net device setup: enabled 2020/06/01 06:58:53 concurrency sanitizer: enabled 2020/06/01 06:58:53 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/06/01 06:58:53 USB emulation: enabled syzkaller login: [ 49.406748][ T8907] KCSAN: could not find function: 'poll_schedule_timeout' [ 50.017599][ T8907] KCSAN: could not find function: '_find_next_bit' 2020/06/01 06:59:01 adding functions to KCSAN blacklist: 'tick_nohz_idle_stop_tick' 'ext4_free_inodes_count' 'exit_signals' 'do_nanosleep' 'mod_timer' 'blk_mq_request_bypass_insert' '__x64_sys_ptrace' 'poll_schedule_timeout' '_find_next_bit' 'copy_process' 'xas_find_marked' 'pcpu_alloc' 'wbt_done' '__ext4_new_inode' 'futex_wait_queue_me' 'kauditd_thread' 'ext4_writepages' 'direct_page_fault' 'echo_char' 'kcm_rfree' 'step_into' 'snd_rawmidi_kernel_write1' 'page_counter_charge' 'iput' '__snd_rawmidi_transmit_ack' 'ext4_da_write_end' 'run_timer_softirq' 'ext4_mark_iloc_dirty' 'ep_poll' 'generic_write_end' 'blk_mq_sched_dispatch_requests' '__bpf_lru_node_move_in' 'io_sq_thread' 'add_timer' 'generic_fillattr' 'audit_log_start' '__find_get_block' 'fasync_remove_entry' 'generic_file_read_iter' 'handle_edge_irq' 'blk_mq_get_request' 'tick_nohz_next_event' 'ktime_get_real_seconds' 'ext4_write_end' 'do_syslog' 'do_signal_stop' '__get_user_pages' 'ktime_get_seconds' 'snd_seq_check_queue' 'blk_mq_dispatch_rq_list' 'decrypt_packet' 'vm_area_dup' 'find_get_pages_range_tag' 'file_update_time' 'shmem_getpage_gfp' 'dd_has_work' 'n_tty_receive_buf_common' 'do_exit' '__mark_inode_dirty' 'xas_clear_mark' 'tick_sched_do_timer' [ 131.742151][ C0] ================================================================== [ 131.750359][ C0] BUG: KCSAN: data-race in timer_clear_idle / trigger_dyntick_cpu.isra.0 [ 131.758826][ C0] [ 131.761221][ C0] write to 0xffff88812c11dca4 of 1 bytes by task 0 on cpu 1: [ 131.768581][ C0] timer_clear_idle+0x3d/0x50 [ 131.773238][ C0] __tick_nohz_idle_restart_tick+0x32/0x1a0 [ 131.779119][ C0] tick_nohz_idle_exit+0x19c/0x1d0 [ 131.784219][ C0] do_idle+0xac/0x290 [ 131.788175][ C0] cpu_startup_entry+0x14/0x20 [ 131.792918][ C0] start_secondary+0x169/0x1b0 [ 131.797744][ C0] secondary_startup_64+0xa4/0xb0 [ 131.802735][ C0] [ 131.805043][ C0] read to 0xffff88812c11dca4 of 1 bytes by interrupt on cpu 0: [ 131.812576][ C0] trigger_dyntick_cpu.isra.0+0x6d/0xf0 [ 131.818110][ C0] add_timer_on+0x192/0x2c0 [ 131.822604][ C0] clocksource_watchdog+0x699/0x7c0 [ 131.827861][ C0] call_timer_fn+0x58/0x2e0 [ 131.832338][ C0] run_timer_softirq+0xb14/0xbd0 [ 131.837268][ C0] __do_softirq+0x118/0x34a [ 131.841744][ C0] run_ksoftirqd+0x41/0x60 [ 131.846131][ C0] smpboot_thread_fn+0x374/0x4a0 [ 131.851213][ C0] kthread+0x203/0x230 [ 131.855256][ C0] ret_from_fork+0x1f/0x30 [ 131.859636][ C0] [ 131.861946][ C0] Reported by Kernel Concurrency Sanitizer on: [ 131.868073][ C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.7.0-rc1-syzkaller #0 [ 131.876115][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 131.886139][ C0] ================================================================== [ 131.894169][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 131.900740][ C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.7.0-rc1-syzkaller #0 [ 131.908770][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 131.919412][ C0] Call Trace: [ 131.922678][ C0] dump_stack+0x11d/0x187 [ 131.926998][ C0] panic+0x210/0x640 [ 131.930869][ C0] ? vprintk_func+0x89/0x13a [ 131.935432][ C0] kcsan_report.cold+0xc/0x1a [ 131.940085][ C0] kcsan_setup_watchpoint+0x3fb/0x440 [ 131.945435][ C0] trigger_dyntick_cpu.isra.0+0x6d/0xf0 [ 131.951055][ C0] add_timer_on+0x192/0x2c0 [ 131.955534][ C0] clocksource_watchdog+0x699/0x7c0 [ 131.960720][ C0] ? clocksource_select_watchdog+0x410/0x410 [ 131.966671][ C0] ? clocksource_select_watchdog+0x410/0x410 [ 131.972622][ C0] call_timer_fn+0x58/0x2e0 [ 131.977101][ C0] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 131.982967][ C0] ? clocksource_select_watchdog+0x410/0x410 [ 131.991198][ C0] run_timer_softirq+0xb14/0xbd0 [ 131.996120][ C0] ? __rcu_read_lock+0x3c/0x50 [ 132.000867][ C0] ? kvm_clock_read+0x14/0x30 [ 132.005528][ C0] ? kvm_sched_clock_read+0x5/0x10 [ 132.010615][ C0] ? sched_clock+0xf/0x20 [ 132.014930][ C0] ? sched_clock_cpu+0x10/0xd0 [ 132.019668][ C0] __do_softirq+0x118/0x34a [ 132.024147][ C0] ? takeover_tasklets+0x240/0x240 [ 132.029248][ C0] run_ksoftirqd+0x41/0x60 [ 132.033636][ C0] smpboot_thread_fn+0x374/0x4a0 [ 132.038559][ C0] ? constant_test_bit.constprop.0+0x30/0x30 [ 132.044526][ C0] kthread+0x203/0x230 [ 132.048567][ C0] ? kthread_unpark+0xd0/0xd0 [ 132.053216][ C0] ret_from_fork+0x1f/0x30 [ 133.124871][ C0] Shutting down cpus with NMI [ 133.130200][ C0] Kernel Offset: disabled [ 133.134520][ C0] Rebooting in 86400 seconds..