Warning: Permanently added '10.128.0.119' (ECDSA) to the list of known hosts. 2020/07/18 06:44:54 fuzzer started 2020/07/18 06:44:55 dialing manager at 10.128.0.105:44471 2020/07/18 06:44:55 syscalls: 3189 2020/07/18 06:44:55 code coverage: enabled 2020/07/18 06:44:55 comparison tracing: enabled 2020/07/18 06:44:55 extra coverage: enabled 2020/07/18 06:44:55 setuid sandbox: enabled 2020/07/18 06:44:55 namespace sandbox: enabled 2020/07/18 06:44:55 Android sandbox: /sys/fs/selinux/policy does not exist 2020/07/18 06:44:55 fault injection: enabled 2020/07/18 06:44:55 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/07/18 06:44:55 net packet injection: enabled 2020/07/18 06:44:55 net device setup: enabled 2020/07/18 06:44:55 concurrency sanitizer: enabled 2020/07/18 06:44:55 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/07/18 06:44:55 USB emulation: enabled 2020/07/18 06:44:57 suppressing KCSAN reports in functions: 'blk_mq_sched_dispatch_requests' 'xas_clear_mark' 'do_syslog' 'do_sys_poll' 'padata_reorder' 'futex_wait_queue_me' 'blk_mq_rq_ctx_init' 'do_epoll_wait' '__xa_set_mark' 'ext4_write_end' 'do_select' 'snd_rawmidi_kernel_write1' 'n_tty_receive_buf_common' 'complete_signal' '__ext4_new_inode' '__send_signal' 'expire_timers' '__ext4_update_other_inode_time' 'wbt_wait' 'do_nanosleep' 'ext4_free_inodes_count' 'do_signal_stop' '__mark_inode_dirty' 'find_get_pages_range_tag' 'page_counter_charge' 'dd_has_work' 'kauditd_thread' 'generic_write_end' 'lru_add_drain_all' '__xa_clear_mark' 'ext4_free_inode' '__filemap_fdatawrite_range' 'blk_mq_dispatch_rq_list' 'alloc_pid' 'wbt_issue' 'pcpu_alloc' syzkaller login: [ 105.760414][ C0] ================================================================== [ 105.768509][ C0] BUG: KCSAN: data-race in __mod_timer / timer_clear_idle [ 105.775599][ C0] [ 105.777984][ C0] write to 0xffff88812c11cb24 of 1 bytes by task 0 on cpu 1: [ 105.785333][ C0] timer_clear_idle+0x2e/0x40 [ 105.790015][ C0] tick_nohz_idle_retain_tick+0x3e/0x40 [ 105.795548][ C0] do_idle+0x287/0x310 [ 105.799586][ C0] cpu_startup_entry+0x15/0x20 [ 105.804318][ C0] start_secondary+0xe3/0x110 [ 105.808966][ C0] secondary_startup_64+0xa4/0xb0 [ 105.813958][ C0] [ 105.816282][ C0] read to 0xffff88812c11cb24 of 1 bytes by interrupt on cpu 0: [ 105.823810][ C0] __mod_timer+0xb87/0xf00 [ 105.828202][ C0] mod_timer+0x1b/0x20 [ 105.832249][ C0] sk_reset_timer+0x1f/0xa0 [ 105.836723][ C0] tcp_send_delayed_ack+0x191/0x250 [ 105.841889][ C0] __tcp_ack_snd_check+0x326/0x500 [ 105.846987][ C0] tcp_rcv_established+0x12e2/0x1520 [ 105.852241][ C0] tcp_v4_do_rcv+0x25e/0x480 [ 105.856811][ C0] tcp_v4_rcv+0x219b/0x2420 [ 105.861296][ C0] ip_protocol_deliver_rcu+0x1f9/0x400 [ 105.866722][ C0] ip_local_deliver+0x1d6/0x2a0 [ 105.871549][ C0] ip_sublist_rcv+0x4d4/0x5a0 [ 105.876205][ C0] ip_list_rcv+0x262/0x290 [ 105.880605][ C0] __netif_receive_skb_list_core+0x34b/0x450 [ 105.886561][ C0] __netif_receive_skb_list+0x298/0x310 [ 105.892127][ C0] netif_receive_skb_list_internal+0xda/0x330 [ 105.898184][ C0] napi_gro_receive+0x329/0x5a0 [ 105.903009][ C0] receive_buf+0x7a4/0xcf0 [ 105.907393][ C0] virtnet_poll+0x2fa/0x780 [ 105.911886][ C0] napi_poll+0x178/0x4a0 [ 105.916110][ C0] net_rx_action+0x1ba/0x530 [ 105.920665][ C0] __do_softirq+0x198/0x360 [ 105.925165][ C0] run_ksoftirqd+0x2f/0x60 [ 105.929549][ C0] smpboot_thread_fn+0x347/0x530 [ 105.934464][ C0] kthread+0x20d/0x230 [ 105.939197][ C0] ret_from_fork+0x1f/0x30 [ 105.943587][ C0] [ 105.945893][ C0] Reported by Kernel Concurrency Sanitizer on: [ 105.952034][ C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.8.0-rc5-syzkaller #0 [ 105.960063][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 105.970088][ C0] ================================================================== [ 105.978120][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 105.984680][ C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.8.0-rc5-syzkaller #0 [ 105.992720][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 106.002750][ C0] Call Trace: [ 106.006032][ C0] dump_stack+0x10f/0x19d [ 106.010329][ C0] panic+0x207/0x64a [ 106.014196][ C0] ? vprintk_emit+0x44a/0x4f0 [ 106.018845][ C0] kcsan_report+0x684/0x690 [ 106.023317][ C0] ? kcsan_setup_watchpoint+0x453/0x4d0 [ 106.028849][ C0] ? __mod_timer+0xb87/0xf00 [ 106.033407][ C0] ? mod_timer+0x1b/0x20 [ 106.037618][ C0] ? sk_reset_timer+0x1f/0xa0 [ 106.042263][ C0] ? tcp_send_delayed_ack+0x191/0x250 [ 106.047605][ C0] ? __tcp_ack_snd_check+0x326/0x500 [ 106.052856][ C0] ? tcp_rcv_established+0x12e2/0x1520 [ 106.058294][ C0] ? tcp_v4_do_rcv+0x25e/0x480 [ 106.063024][ C0] ? tcp_v4_rcv+0x219b/0x2420 [ 106.067668][ C0] ? ip_protocol_deliver_rcu+0x1f9/0x400 [ 106.073269][ C0] ? ip_local_deliver+0x1d6/0x2a0 [ 106.078270][ C0] ? ip_sublist_rcv+0x4d4/0x5a0 [ 106.083086][ C0] ? ip_list_rcv+0x262/0x290 [ 106.087640][ C0] ? __netif_receive_skb_list_core+0x34b/0x450 [ 106.093760][ C0] ? __netif_receive_skb_list+0x298/0x310 [ 106.099449][ C0] ? netif_receive_skb_list_internal+0xda/0x330 [ 106.105654][ C0] ? napi_gro_receive+0x329/0x5a0 [ 106.110645][ C0] ? receive_buf+0x7a4/0xcf0 [ 106.115215][ C0] ? virtnet_poll+0x2fa/0x780 [ 106.119873][ C0] ? napi_poll+0x178/0x4a0 [ 106.124275][ C0] ? net_rx_action+0x1ba/0x530 [ 106.129011][ C0] ? __do_softirq+0x198/0x360 [ 106.133781][ C0] ? run_ksoftirqd+0x2f/0x60 [ 106.138339][ C0] ? smpboot_thread_fn+0x347/0x530 [ 106.143416][ C0] ? kthread+0x20d/0x230 [ 106.147676][ C0] ? ret_from_fork+0x1f/0x30 [ 106.152244][ C0] ? __tcp_select_window+0x340/0x510 [ 106.157504][ C0] kcsan_setup_watchpoint+0x453/0x4d0 [ 106.162851][ C0] __mod_timer+0xb87/0xf00 [ 106.167266][ C0] mod_timer+0x1b/0x20 [ 106.171305][ C0] sk_reset_timer+0x1f/0xa0 [ 106.175778][ C0] tcp_send_delayed_ack+0x191/0x250 [ 106.180941][ C0] __tcp_ack_snd_check+0x326/0x500 [ 106.186018][ C0] tcp_rcv_established+0x12e2/0x1520 [ 106.191275][ C0] tcp_v4_do_rcv+0x25e/0x480 [ 106.195829][ C0] tcp_v4_rcv+0x219b/0x2420 [ 106.200325][ C0] ip_protocol_deliver_rcu+0x1f9/0x400 [ 106.205767][ C0] ip_local_deliver+0x1d6/0x2a0 [ 106.210583][ C0] ? ip_local_deliver+0x2a0/0x2a0 [ 106.215574][ C0] ip_sublist_rcv+0x4d4/0x5a0 [ 106.220654][ C0] ? ip_rcv_core+0x620/0x620 [ 106.225207][ C0] ip_list_rcv+0x262/0x290 [ 106.229586][ C0] ? ip_rcv_finish+0x160/0x160 [ 106.234315][ C0] __netif_receive_skb_list_core+0x34b/0x450 [ 106.240265][ C0] __netif_receive_skb_list+0x298/0x310 [ 106.245774][ C0] ? receive_mergeable+0x45f/0x1af0 [ 106.250956][ C0] netif_receive_skb_list_internal+0xda/0x330 [ 106.256997][ C0] napi_gro_receive+0x329/0x5a0 [ 106.261815][ C0] receive_buf+0x7a4/0xcf0 [ 106.266196][ C0] virtnet_poll+0x2fa/0x780 [ 106.270684][ C0] napi_poll+0x178/0x4a0 [ 106.274897][ C0] net_rx_action+0x1ba/0x530 [ 106.279465][ C0] __do_softirq+0x198/0x360 [ 106.283940][ C0] ? ksoftirqd_should_run+0x20/0x20 [ 106.289123][ C0] run_ksoftirqd+0x2f/0x60 [ 106.293518][ C0] smpboot_thread_fn+0x347/0x530 [ 106.298435][ C0] ? cpu_report_death+0x80/0x80 [ 106.303256][ C0] kthread+0x20d/0x230 [ 106.307294][ C0] ? cpu_report_death+0x80/0x80 [ 106.312116][ C0] ? kthread_blkcg+0x80/0x80 [ 106.316676][ C0] ret_from_fork+0x1f/0x30 [ 107.385391][ C0] Shutting down cpus with NMI [ 107.392077][ C0] Kernel Offset: disabled [ 107.396454][ C0] Rebooting in 86400 seconds..