Warning: Permanently added '10.128.0.92' (ECDSA) to the list of known hosts.
2019/10/04 12:20:59 fuzzer started
2019/10/04 12:21:01 dialing manager at 10.128.0.105:38119
2019/10/04 12:21:01 syscalls: 2523
2019/10/04 12:21:01 code coverage: enabled
2019/10/04 12:21:01 comparison tracing: enabled
2019/10/04 12:21:01 extra coverage: extra coverage is not supported by the kernel
2019/10/04 12:21:01 setuid sandbox: enabled
2019/10/04 12:21:01 namespace sandbox: enabled
2019/10/04 12:21:01 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/04 12:21:01 fault injection: enabled
2019/10/04 12:21:01 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/04 12:21:01 net packet injection: enabled
2019/10/04 12:21:01 net device setup: enabled
2019/10/04 12:21:01 concurrency sanitizer: enabled
syzkaller login: [   45.667345][    C0] ==================================================================
[   45.675540][    C0] BUG: KCSAN: data-race in __tcp_select_window+0x6b/0x4d0 and tcp_add_backlog+0x4a0/0xcc0
[   45.685398][    C0] 
[   45.687711][    C0] read to 0xffff88812318332c of 4 bytes by task 7148 on cpu 1:
[   45.695234][    C0]  __tcp_select_window+0x6b/0x4d0
[   45.700358][    C0]  __tcp_transmit_skb+0x679/0x1cd0
[   45.705456][    C0]  __tcp_send_ack+0x246/0x300
[   45.710120][    C0]  tcp_send_ack+0x34/0x40
[   45.714434][    C0]  tcp_cleanup_rbuf+0x130/0x360
[   45.719268][    C0]  tcp_recvmsg+0x633/0x1a30
[   45.723755][    C0]  inet_recvmsg+0xbb/0x250
[   45.728152][    C0]  sock_recvmsg+0x92/0xb0
[   45.732459][    C0]  sock_read_iter+0x15f/0x1e0
[   45.737127][    C0]  new_sync_read+0x389/0x4f0
[   45.741708][    C0]  __vfs_read+0xb1/0xc0
[   45.745843][    C0]  vfs_read+0x143/0x2c0
[   45.749994][    C0]  ksys_read+0xd5/0x1b0
[   45.754131][    C0]  __x64_sys_read+0x4c/0x60
[   45.758607][    C0] 
[   45.760920][    C0] write to 0xffff88812318332c of 4 bytes by interrupt on cpu 0:
[   45.768530][    C0]  tcp_add_backlog+0x4a0/0xcc0
[   45.773275][    C0]  tcp_v4_rcv+0x1aba/0x1bf0
[   45.777763][    C0]  ip_protocol_deliver_rcu+0x51/0x470
[   45.783117][    C0]  ip_local_deliver_finish+0x110/0x140
[   45.788555][    C0]  ip_local_deliver+0x133/0x210
[   45.793388][    C0]  ip_rcv_finish+0x121/0x160
[   45.797956][    C0]  ip_rcv+0x18f/0x1a0
[   45.801929][    C0]  __netif_receive_skb_one_core+0xa7/0xe0
[   45.807631][    C0]  __netif_receive_skb+0x37/0xf0
[   45.812558][    C0]  netif_receive_skb_internal+0x59/0x190
[   45.818182][    C0]  napi_gro_receive+0x28f/0x330
[   45.823028][    C0]  receive_buf+0x284/0x30b0
[   45.827510][    C0]  virtnet_poll+0x436/0x7d0
[   45.831985][    C0] 
[   45.834290][    C0] Reported by Kernel Concurrency Sanitizer on:
[   45.840426][    C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.3.0+ #0
[   45.847344][    C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   45.857385][    C0] ==================================================================
[   45.865426][    C0] Kernel panic - not syncing: panic_on_warn set ...
[   45.871993][    C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.3.0+ #0
[   45.878917][    C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   45.888947][    C0] Call Trace:
[   45.892351][    C0]  dump_stack+0xf5/0x159
[   45.896580][    C0]  panic+0x209/0x639
[   45.900460][    C0]  ? vprintk_func+0x8d/0x140
[   45.905045][    C0]  kcsan_report.cold+0x57/0xeb
[   45.909816][    C0]  __kcsan_setup_watchpoint+0x342/0x500
[   45.915358][    C0]  __tsan_write4+0x32/0x40
[   45.919786][    C0]  tcp_add_backlog+0x4a0/0xcc0
[   45.924541][    C0]  ? __rcu_read_unlock+0x62/0xe0
[   45.929473][    C0]  tcp_v4_rcv+0x1aba/0x1bf0
[   45.933961][    C0]  ? common_interrupt+0xa/0xf
[   45.938642][    C0]  ip_protocol_deliver_rcu+0x51/0x470
[   45.943999][    C0]  ip_local_deliver_finish+0x110/0x140
[   45.949446][    C0]  ip_local_deliver+0x133/0x210
[   45.954283][    C0]  ? ip_protocol_deliver_rcu+0x470/0x470
[   45.959898][    C0]  ip_rcv_finish+0x121/0x160
[   45.964476][    C0]  ip_rcv+0x18f/0x1a0
[   45.968448][    C0]  ? ip_sublist_rcv+0x5e0/0x5e0
[   45.973281][    C0]  ? ip_local_deliver+0x210/0x210
[   45.978399][    C0]  __netif_receive_skb_one_core+0xa7/0xe0
[   45.984113][    C0]  __netif_receive_skb+0x37/0xf0
[   45.989032][    C0]  netif_receive_skb_internal+0x59/0x190
[   45.994645][    C0]  napi_gro_receive+0x28f/0x330
[   45.999479][    C0]  receive_buf+0x284/0x30b0
[   46.003965][    C0]  ? __tsan_write8+0x32/0x40
[   46.008545][    C0]  ? virtqueue_get_buf_ctx+0x4fd/0x5c0
[   46.013990][    C0]  virtnet_poll+0x436/0x7d0
[   46.018508][    C0]  net_rx_action+0x3ae/0xa50
[   46.023085][    C0]  __do_softirq+0x115/0x33f
[   46.027576][    C0]  ? takeover_tasklets+0x250/0x250
[   46.032669][    C0]  run_ksoftirqd+0x46/0x60
[   46.037075][    C0]  smpboot_thread_fn+0x37d/0x4a0
[   46.041997][    C0]  kthread+0x1d4/0x200
[   46.046046][    C0]  ? constant_test_bit.constprop.0+0x30/0x30
[   46.052017][    C0]  ? kthread_bind+0x50/0x50
[   46.056506][    C0]  ret_from_fork+0x1f/0x30
[   46.062162][    C0] Kernel Offset: disabled
[   46.066481][    C0] Rebooting in 86400 seconds..