Warning: Permanently added '10.128.0.61' (ECDSA) to the list of known hosts. 2020/05/21 11:01:23 fuzzer started 2020/05/21 11:01:24 dialing manager at 10.128.0.105:44971 2020/05/21 11:01:24 syscalls: 3055 2020/05/21 11:01:24 code coverage: enabled 2020/05/21 11:01:24 comparison tracing: enabled 2020/05/21 11:01:24 extra coverage: enabled 2020/05/21 11:01:24 setuid sandbox: enabled 2020/05/21 11:01:24 namespace sandbox: enabled 2020/05/21 11:01:24 Android sandbox: /sys/fs/selinux/policy does not exist 2020/05/21 11:01:24 fault injection: enabled 2020/05/21 11:01:24 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/05/21 11:01:24 net packet injection: enabled 2020/05/21 11:01:24 net device setup: enabled 2020/05/21 11:01:24 concurrency sanitizer: enabled 2020/05/21 11:01:24 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/05/21 11:01:24 USB emulation: enabled [ 53.302272][ T8920] KCSAN: could not find function: 'poll_schedule_timeout' [ 57.166205][ T8920] KCSAN: could not find function: '_find_next_bit' 2020/05/21 11:01:31 adding functions to KCSAN blacklist: 'do_signal_stop' 'wbt_issue' 'ktime_get_seconds' 'blk_mq_get_request' 'ext4_mark_iloc_dirty' '__filemap_fdatawrite_range' 'futex_wait_queue_me' 'echo_char' 'mod_timer' 'ext4_ext_try_to_merge_right' 'fsnotify' 'do_exit' 'vm_area_dup' '__ext4_new_inode' 'blk_mq_dispatch_rq_list' 'poll_schedule_timeout' 'atime_needs_update' '__add_to_page_cache_locked' 'add_timer' 'pcpu_alloc' 'shmem_file_read_iter' '__get_user_pages' 'ext4_handle_inode_extension' 'n_tty_receive_buf_common' 'tick_sched_do_timer' '__x64_sys_ptrace' 'step_into' 'blk_mq_sched_dispatch_requests' 'dccp_fin' 'do_nanosleep' 'padata_find_next' 'snd_seq_check_queue' 'ep_poll' 'alloc_pid' 'xas_clear_mark' 'dd_has_work' 'ext4_free_inodes_count' 'kauditd_thread' 'run_timer_softirq' '__dentry_kill' 'do_syslog' 'get_cpu_idle_time_us' '_find_next_bit' '__process_echoes' 'binder_dec_node_nilocked' 'exit_signals' 'find_get_pages_range_tag' 'page_counter_charge' 'generic_fillattr' 'install_new_memslots' 'shmem_getpage_gfp' 'copy_process' 'wbt_done' '__mark_inode_dirty' '__find_get_block' 'tick_nohz_idle_stop_tick' 'audit_log_start' 'ext4_da_write_end' 'pipe_double_lock' 'generic_write_end' 'ktime_get_real_seconds' [ 229.874428][ C0] ================================================================== [ 229.883054][ C0] BUG: KCSAN: data-race in add_timer_on / timer_clear_idle [ 229.890226][ C0] [ 229.892555][ C0] write to 0xffff88812c11dca4 of 1 bytes by task 0 on cpu 1: [ 229.900082][ C0] timer_clear_idle+0x3d/0x50 [ 229.904741][ C0] __tick_nohz_idle_restart_tick+0x32/0x1a0 [ 229.910626][ C0] tick_nohz_idle_exit+0x19c/0x1d0 [ 229.915738][ C0] do_idle+0xac/0x290 [ 229.919700][ C0] cpu_startup_entry+0x14/0x20 [ 229.924615][ C0] start_secondary+0x169/0x1b0 [ 229.929363][ C0] secondary_startup_64+0xa4/0xb0 [ 229.934636][ C0] [ 229.936972][ C0] read to 0xffff88812c11dca4 of 1 bytes by interrupt on cpu 0: [ 229.944527][ C0] add_timer_on+0x21f/0x2c0 [ 229.949121][ C0] clocksource_watchdog+0x699/0x7c0 [ 229.954306][ C0] call_timer_fn+0x58/0x2e0 [ 229.958791][ C0] run_timer_softirq+0xb14/0xbd0 [ 229.963722][ C0] __do_softirq+0x118/0x34a [ 229.968203][ C0] run_ksoftirqd+0x41/0x60 [ 229.972720][ C0] smpboot_thread_fn+0x374/0x4a0 [ 229.977649][ C0] kthread+0x203/0x230 [ 229.981726][ C0] ret_from_fork+0x1f/0x30 [ 229.986129][ C0] [ 229.988440][ C0] Reported by Kernel Concurrency Sanitizer on: [ 229.994570][ C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.7.0-rc1-syzkaller #0 [ 230.002707][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 230.012735][ C0] ================================================================== [ 230.020783][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 230.027347][ C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.7.0-rc1-syzkaller #0 [ 230.035380][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 230.045549][ C0] Call Trace: [ 230.048831][ C0] dump_stack+0x11d/0x187 [ 230.053419][ C0] panic+0x210/0x640 [ 230.057309][ C0] ? vprintk_func+0x89/0x13a [ 230.061902][ C0] kcsan_report.cold+0xc/0x1a [ 230.066591][ C0] kcsan_setup_watchpoint+0x3fb/0x440 [ 230.071944][ C0] add_timer_on+0x21f/0x2c0 [ 230.076429][ C0] clocksource_watchdog+0x699/0x7c0 [ 230.081630][ C0] ? clocksource_select_watchdog+0x410/0x410 [ 230.087732][ C0] ? clocksource_select_watchdog+0x410/0x410 [ 230.093886][ C0] call_timer_fn+0x58/0x2e0 [ 230.098368][ C0] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 230.104240][ C0] ? clocksource_select_watchdog+0x410/0x410 [ 230.110374][ C0] run_timer_softirq+0xb14/0xbd0 [ 230.115312][ C0] ? __rcu_read_lock+0x3c/0x50 [ 230.120071][ C0] ? kvm_clock_read+0x14/0x30 [ 230.124740][ C0] ? kvm_sched_clock_read+0x5/0x10 [ 230.129827][ C0] ? sched_clock+0xf/0x20 [ 230.134134][ C0] ? sched_clock_cpu+0x10/0xd0 [ 230.138954][ C0] __do_softirq+0x118/0x34a [ 230.143455][ C0] ? takeover_tasklets+0x240/0x240 [ 230.148553][ C0] run_ksoftirqd+0x41/0x60 [ 230.153052][ C0] smpboot_thread_fn+0x374/0x4a0 [ 230.157968][ C0] ? constant_test_bit.constprop.0+0x30/0x30 [ 230.164183][ C0] kthread+0x203/0x230 [ 230.168229][ C0] ? kthread_unpark+0xd0/0xd0 [ 230.172882][ C0] ret_from_fork+0x1f/0x30 [ 231.244206][ C0] Shutting down cpus with NMI [ 231.250288][ C0] Kernel Offset: disabled [ 231.254714][ C0] Rebooting in 86400 seconds..