Warning: Permanently added '10.128.0.167' (ECDSA) to the list of known hosts.
2019/10/04 12:29:38 fuzzer started
2019/10/04 12:29:40 dialing manager at 10.128.0.105:38119
2019/10/04 12:29:40 syscalls: 2523
2019/10/04 12:29:40 code coverage: enabled
2019/10/04 12:29:40 comparison tracing: enabled
2019/10/04 12:29:40 extra coverage: extra coverage is not supported by the kernel
2019/10/04 12:29:40 setuid sandbox: enabled
2019/10/04 12:29:40 namespace sandbox: enabled
2019/10/04 12:29:40 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/04 12:29:40 fault injection: enabled
2019/10/04 12:29:40 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/04 12:29:40 net packet injection: enabled
2019/10/04 12:29:40 net device setup: enabled
2019/10/04 12:29:40 concurrency sanitizer: enabled
syzkaller login: [   58.241606][    C0] ==================================================================
[   58.249804][    C0] BUG: KCSAN: data-race in __tcp_select_window+0x6b/0x4d0 and tcp_add_backlog+0x4a0/0xcc0
[   58.259672][    C0] 
[   58.261986][    C0] read to 0xffff888124a9212c of 4 bytes by task 7259 on cpu 1:
[   58.269509][    C0]  __tcp_select_window+0x6b/0x4d0
[   58.274514][    C0]  __tcp_transmit_skb+0x679/0x1cd0
[   58.279606][    C0]  __tcp_send_ack+0x246/0x300
[   58.284264][    C0]  tcp_send_ack+0x34/0x40
[   58.288570][    C0]  tcp_cleanup_rbuf+0x130/0x360
[   58.293411][    C0]  tcp_recvmsg+0x633/0x1a30
[   58.297894][    C0]  inet_recvmsg+0xbb/0x250
[   58.302288][    C0]  sock_recvmsg+0x92/0xb0
[   58.306599][    C0]  sock_read_iter+0x15f/0x1e0
[   58.311268][    C0]  new_sync_read+0x389/0x4f0
[   58.315838][    C0]  __vfs_read+0xb1/0xc0
[   58.319973][    C0]  vfs_read+0x143/0x2c0
[   58.324107][    C0]  ksys_read+0xd5/0x1b0
[   58.328246][    C0]  __x64_sys_read+0x4c/0x60
[   58.332721][    C0] 
[   58.335037][    C0] write to 0xffff888124a9212c of 4 bytes by interrupt on cpu 0:
[   58.342642][    C0]  tcp_add_backlog+0x4a0/0xcc0
[   58.347389][    C0]  tcp_v4_rcv+0x1aba/0x1bf0
[   58.351872][    C0]  ip_protocol_deliver_rcu+0x51/0x470
[   58.357225][    C0]  ip_local_deliver_finish+0x110/0x140
[   58.362662][    C0]  ip_local_deliver+0x133/0x210
[   58.367490][    C0]  ip_rcv_finish+0x121/0x160
[   58.372058][    C0]  ip_rcv+0x18f/0x1a0
[   58.376023][    C0]  __netif_receive_skb_one_core+0xa7/0xe0
[   58.381727][    C0]  __netif_receive_skb+0x37/0xf0
[   58.386642][    C0]  netif_receive_skb_internal+0x59/0x190
[   58.392253][    C0]  napi_gro_receive+0x28f/0x330
[   58.397085][    C0]  receive_buf+0x284/0x30b0
[   58.401582][    C0]  virtnet_poll+0x436/0x7d0
[   58.406069][    C0] 
[   58.408372][    C0] Reported by Kernel Concurrency Sanitizer on:
[   58.414506][    C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.3.0+ #0
[   58.421416][    C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   58.431447][    C0] ==================================================================
[   58.439499][    C0] Kernel panic - not syncing: panic_on_warn set ...
[   58.446074][    C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.3.0+ #0
[   58.452991][    C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   58.463025][    C0] Call Trace:
[   58.466299][    C0]  dump_stack+0xf5/0x159
[   58.470527][    C0]  panic+0x209/0x639
[   58.474410][    C0]  ? vprintk_func+0x8d/0x140
[   58.478985][    C0]  kcsan_report.cold+0x57/0xeb
[   58.483819][    C0]  __kcsan_setup_watchpoint+0x342/0x500
[   58.489344][    C0]  __tsan_write4+0x32/0x40
[   58.493742][    C0]  tcp_add_backlog+0x4a0/0xcc0
[   58.498489][    C0]  ? __rcu_read_unlock+0x62/0xe0
[   58.503415][    C0]  tcp_v4_rcv+0x1aba/0x1bf0
[   58.507910][    C0]  ? __tsan_read8+0x2c/0x30
[   58.512404][    C0]  ip_protocol_deliver_rcu+0x51/0x470
[   58.517762][    C0]  ip_local_deliver_finish+0x110/0x140
[   58.523204][    C0]  ip_local_deliver+0x133/0x210
[   58.528041][    C0]  ? ip_protocol_deliver_rcu+0x470/0x470
[   58.533659][    C0]  ip_rcv_finish+0x121/0x160
[   58.538241][    C0]  ip_rcv+0x18f/0x1a0
[   58.542205][    C0]  ? ip_sublist_rcv+0x5e0/0x5e0
[   58.552343][    C0]  ? ip_local_deliver+0x210/0x210
[   58.557352][    C0]  __netif_receive_skb_one_core+0xa7/0xe0
[   58.563057][    C0]  __netif_receive_skb+0x37/0xf0
[   58.567976][    C0]  netif_receive_skb_internal+0x59/0x190
[   58.573612][    C0]  napi_gro_receive+0x28f/0x330
[   58.578457][    C0]  receive_buf+0x284/0x30b0
[   58.582941][    C0]  ? __tsan_write8+0x32/0x40
[   58.587521][    C0]  ? virtqueue_get_buf_ctx+0x4fd/0x5c0
[   58.592965][    C0]  ? virtqueue_get_buf+0x31/0x40
[   58.597887][    C0]  virtnet_poll+0x436/0x7d0
[   58.602380][    C0]  net_rx_action+0x3ae/0xa50
[   58.606961][    C0]  __do_softirq+0x115/0x33f
[   58.611462][    C0]  ? takeover_tasklets+0x250/0x250
[   58.616553][    C0]  run_ksoftirqd+0x46/0x60
[   58.620950][    C0]  smpboot_thread_fn+0x37d/0x4a0
[   58.625872][    C0]  kthread+0x1d4/0x200
[   58.629921][    C0]  ? constant_test_bit.constprop.0+0x30/0x30
[   58.635881][    C0]  ? kthread_bind+0x50/0x50
[   58.640368][    C0]  ret_from_fork+0x1f/0x30
[   58.645984][    C0] Kernel Offset: disabled
[   58.650311][    C0] Rebooting in 86400 seconds..