Warning: Permanently added '10.128.0.16' (ECDSA) to the list of known hosts.
2020/01/03 13:13:32 fuzzer started
2020/01/03 13:13:33 dialing manager at 10.128.0.105:42817
2020/01/03 13:13:41 syscalls: 2723
2020/01/03 13:13:41 code coverage: enabled
2020/01/03 13:13:41 comparison tracing: enabled
2020/01/03 13:13:41 extra coverage: enabled
2020/01/03 13:13:41 setuid sandbox: enabled
2020/01/03 13:13:41 namespace sandbox: enabled
2020/01/03 13:13:41 Android sandbox: /sys/fs/selinux/policy does not exist
2020/01/03 13:13:41 fault injection: enabled
2020/01/03 13:13:41 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/01/03 13:13:41 net packet injection: enabled
2020/01/03 13:13:41 net device setup: enabled
2020/01/03 13:13:41 concurrency sanitizer: enabled
2020/01/03 13:13:41 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 89.620704][ T7884] KCSAN: could not find function: 'poll_schedule_timeout'
2020/01/03 13:13:48 adding functions to KCSAN blacklist: 'bio_endio' 'tick_sched_do_timer' '__ext4_new_inode' 'blk_mq_sched_dispatch_requests' 'blk_stat_add' 'timer_clear_idle' 'blk_mq_dispatch_rq_list' '__hrtimer_run_queues' 'mod_timer' 'ext4_free_inode' 'xas_find_marked' 'tomoyo_supervisor' 'taskstats_exit' 'vm_area_dup' 'kauditd_thread' 'j1939_xtp_rx_dat_one' 'wbt_issue' 'sit_tunnel_xmit' 'pcpu_alloc' 'run_timer_softirq' 'ext4_has_free_clusters' 'ext4_mark_iloc_dirty' '__mark_inode_dirty' 'list_lru_count_one' 'ext4_free_inodes_count' 'xas_clear_mark' 'futex_wait_queue_me' 'find_get_pages_range_tag' 'ktime_get_real_seconds' 'dd_has_work' 'rcu_gp_fqs_check_wake' 'find_next_bit' 'generic_write_end' 'tick_nohz_idle_stop_tick' 'do_nanosleep' 'blk_mq_get_request' 'tick_do_update_jiffies64' 'generic_fillattr' 'do_try_to_free_pages' 'process_srcu' 'ep_poll' 'wbt_done' 'ext4_nonda_switch' 'poll_schedule_timeout' 'lruvec_lru_size' 'shmem_file_read_iter'
[ 171.569882][ C0] ==================================================================
[ 171.578182][ C0] BUG: KCSAN: data-race in virtqueue_disable_cb / virtqueue_enable_cb_delayed
[ 171.587034][ C0]
[ 171.589378][ C0] write to 0xffff8881290e9eb0 of 2 bytes by interrupt on cpu 1:
[ 171.597098][ C0] virtqueue_enable_cb_delayed+0x219/0x4d0
[ 171.602907][ C0] start_xmit+0xb0f/0xbe0
[ 171.607420][ C0] dev_hard_start_xmit+0xef/0x430
[ 171.612679][ C0] sch_direct_xmit+0x2b3/0x900
[ 171.617470][ C0] __dev_queue_xmit+0x13e2/0x1ba0
[ 171.622530][ C0] dev_queue_xmit+0x21/0x30
[ 171.627050][ C0] ip_finish_output2+0x89b/0xea0
[ 171.632194][ C0] __ip_finish_output+0x23a/0x490
[ 171.637240][ C0] ip_finish_output+0x41/0x160
[ 171.642025][ C0] ip_output+0xfe/0x230
[ 171.646190][ C0] ip_local_out+0x74/0x90
[ 171.650526][ C0] __ip_queue_xmit+0x3a8/0xa40
[ 171.655566][ C0] ip_queue_xmit+0x45/0x60
[ 171.660005][ C0] __tcp_transmit_skb+0xea3/0x1df0
[ 171.665487][ C0] __tcp_send_ack+0x246/0x300
[ 171.670299][ C0] tcp_send_ack+0x34/0x40
[ 171.674628][ C0] __tcp_ack_snd_check+0xd9/0x580
[ 171.679654][ C0] tcp_rcv_established+0xce9/0xf50
[ 171.684775][ C0] tcp_v4_do_rcv+0x3b5/0x520
[ 171.689389][ C0] tcp_v4_rcv+0x1b2a/0x1d20
[ 171.693917][ C0] ip_protocol_deliver_rcu+0x4d/0x420
[ 171.699396][ C0] ip_local_deliver_finish+0x110/0x140
[ 171.704861][ C0] ip_local_deliver+0x133/0x210
[ 171.709717][ C0] ip_sublist_rcv_finish+0xf8/0x140
[ 171.715106][ C0] ip_sublist_rcv+0x418/0x550
[ 171.719879][ C0] ip_list_rcv+0x2f5/0x322
[ 171.724310][ C0] __netif_receive_skb_list_core+0x350/0x5c0
[ 171.730552][ C0] netif_receive_skb_list_internal+0x5d8/0x830
[ 171.736722][ C0] gro_normal_list.part.0+0x3a/0xb0
[ 171.742158][ C0] gro_normal_one+0x162/0x170
[ 171.746913][ C0] napi_gro_receive+0x288/0x300
[ 171.751789][ C0] receive_buf+0x284/0x30b0
[ 171.756289][ C0] virtnet_poll+0x436/0x7d0
[ 171.760794][ C0] net_rx_action+0x3ae/0xa90
[ 171.765391][ C0] __do_softirq+0x115/0x33f
[ 171.769915][ C0] irq_exit+0xbb/0xe0
[ 171.773916][ C0] do_IRQ+0x81/0x130
[ 171.777845][ C0] ret_from_intr+0x0/0x21
[ 171.782199][ C0] native_safe_halt+0xe/0x10
[ 171.786812][ C0] arch_cpu_idle+0xa/0x10
[ 171.791174][ C0] default_idle_call+0x1e/0x40
[ 171.795944][ C0] do_idle+0x1c2/0x290
[ 171.800021][ C0] cpu_startup_entry+0x1b/0x20
[ 171.804795][ C0] start_secondary+0x168/0x1b0
[ 171.809568][ C0] secondary_startup_64+0xa4/0xb0
[ 171.814591][ C0]
[ 171.816931][ C0] read to 0xffff8881290e9eb0 of 2 bytes by interrupt on cpu 0:
[ 171.824502][ C0] virtqueue_disable_cb+0xbc/0x130
[ 171.829819][ C0] virtqueue_napi_schedule+0x52/0x60
[ 171.835146][ C0] skb_xmit_done+0xac/0x110
[ 171.839666][ C0] vring_interrupt+0x1a1/0x1c0
[ 171.844610][ C0] __handle_irq_event_percpu+0x9a/0x430
[ 171.850159][ C0] handle_irq_event_percpu+0x4b/0xe0
[ 171.855798][ C0] handle_irq_event+0x85/0xca
[ 171.860483][ C0] handle_edge_irq+0x1a4/0x4a0
[ 171.865384][ C0] do_IRQ+0x7c/0x130
[ 171.869437][ C0] ret_from_intr+0x0/0x21
[ 171.873775][ C0] native_safe_halt+0xe/0x10
[ 171.878804][ C0] arch_cpu_idle+0xa/0x10
[ 171.883132][ C0] default_idle_call+0x1e/0x40
[ 171.887891][ C0] do_idle+0x1c2/0x290
[ 171.892127][ C0] cpu_startup_entry+0x1b/0x20
[ 171.897027][ C0] rest_init+0xec/0xf6
[ 171.901146][ C0] arch_call_rest_init+0x17/0x37
[ 171.906085][ C0] start_kernel+0x838/0x85e
[ 171.910691][ C0] x86_64_start_reservations+0x29/0x2b
[ 171.916154][ C0] x86_64_start_kernel+0x72/0x76
[ 171.921108][ C0] secondary_startup_64+0xa4/0xb0
[ 171.926288][ C0]
[ 171.928603][ C0] Reported by Kernel Concurrency Sanitizer on:
[ 171.934791][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 171.942788][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 171.953098][ C0] ==================================================================
[ 171.961163][ C0] Kernel panic - not syncing: panic_on_warn set ...
[ 171.967852][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 171.975740][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 171.985977][ C0] Call Trace:
[ 171.989296][ C0]
[ 171.992152][ C0] dump_stack+0x11d/0x181
[ 171.996508][ C0] panic+0x210/0x640
[ 172.000439][ C0] ? vprintk_func+0x8d/0x140
[ 172.005041][ C0] kcsan_report.cold+0xc/0xd
[ 172.009618][ C0] kcsan_setup_watchpoint+0x3fe/0x460
[ 172.014984][ C0] __tsan_read2+0xc6/0x100
[ 172.019390][ C0] virtqueue_disable_cb+0xbc/0x130
[ 172.024510][ C0] virtqueue_napi_schedule+0x52/0x60
[ 172.029801][ C0] skb_xmit_done+0xac/0x110
[ 172.034385][ C0] ? virtnet_poll_tx+0x1d0/0x1d0
[ 172.039320][ C0] vring_interrupt+0x1a1/0x1c0
[ 172.044161][ C0] ? virtqueue_enable_cb+0x40/0x40
[ 172.049286][ C0] __handle_irq_event_percpu+0x9a/0x430
[ 172.054841][ C0] handle_irq_event_percpu+0x4b/0xe0
[ 172.060122][ C0] handle_irq_event+0x85/0xca
[ 172.064796][ C0] handle_edge_irq+0x1a4/0x4a0
[ 172.069553][ C0] do_IRQ+0x7c/0x130
[ 172.073441][ C0] common_interrupt+0xf/0xf
[ 172.077926][ C0]
[ 172.080867][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 172.086243][ C0] Code: cc cc cc cc cc cc cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d 4c b6 59 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 3c b6 59 00 fb f4 cc 55 48 89 e5 41 55 41 54 53 e8 22 2b 91 fc e8 3d ae ab fd 0f
[ 172.105863][ C0] RSP: 0018:ffffffff85c03df8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffffd6
[ 172.114271][ C0] RAX: 0000000000000000 RBX: ffffffff85c2b780 RCX: ffffffff82546f95
[ 172.122252][ C0] RDX: 0000000000000000 RSI: ffffffff82546f9e RDI: 0000000000000005
[ 172.130246][ C0] RBP: ffffffff85c03e18 R08: ffffffff85c2b780 R09: 0000ffff85a2f160
[ 172.138234][ C0] R10: 0000ffff85c03e08 R11: 0000ffff85a2f167 R12: 0000000000000000
[ 172.146216][ C0] R13: ffffffff85c2b780 R14: 0000000000000000 R15: 0000000000000000
[ 172.154204][ C0] ? debug_smp_processor_id+0x35/0x137
[ 172.159674][ C0] ? debug_smp_processor_id+0x3e/0x137
[ 172.165131][ C0] ? default_idle+0x26/0x180
[ 172.169716][ C0] arch_cpu_idle+0xa/0x10
[ 172.174038][ C0] default_idle_call+0x1e/0x40
[ 172.178801][ C0] do_idle+0x1c2/0x290
[ 172.182878][ C0] cpu_startup_entry+0x1b/0x20
[ 172.187651][ C0] rest_init+0xec/0xf6
[ 172.191715][ C0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 172.198924][ C0] arch_call_rest_init+0x17/0x37
[ 172.204045][ C0] start_kernel+0x838/0x85e
[ 172.208563][ C0] x86_64_start_reservations+0x29/0x2b
[ 172.214035][ C0] x86_64_start_kernel+0x72/0x76
[ 172.219073][ C0] secondary_startup_64+0xa4/0xb0
[ 172.225506][ C0] Kernel Offset: disabled
[ 172.229835][ C0] Rebooting in 86400 seconds..