Warning: Permanently added '10.128.0.45' (ECDSA) to the list of known hosts.
2019/10/08 21:10:02 fuzzer started
2019/10/08 21:10:03 dialing manager at 10.128.0.105:35069
2019/10/08 21:10:03 syscalls: 2523
2019/10/08 21:10:03 code coverage: enabled
2019/10/08 21:10:03 comparison tracing: enabled
2019/10/08 21:10:03 extra coverage: extra coverage is not supported by the kernel
2019/10/08 21:10:03 setuid sandbox: enabled
2019/10/08 21:10:03 namespace sandbox: enabled
2019/10/08 21:10:03 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/08 21:10:03 fault injection: enabled
2019/10/08 21:10:03 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/08 21:10:03 net packet injection: enabled
2019/10/08 21:10:03 net device setup: enabled
2019/10/08 21:10:03 concurrency sanitizer: enabled
syzkaller login: [   54.879066][    C1] ==================================================================
[   54.887747][    C1] BUG: KCSAN: data-race in tcp_add_backlog / tcp_rcv_space_adjust
[   54.895704][    C1] 
[   54.898045][    C1] write to 0xffff888120f1530c of 4 bytes by task 7354 on cpu 0:
[   54.905866][    C1]  tcp_rcv_space_adjust+0x40f/0x4c0
[   54.911287][    C1]  tcp_recvmsg+0xdaa/0x1a30
[   54.916181][    C1]  inet_recvmsg+0xbb/0x250
[   54.920933][    C1]  sock_recvmsg+0x92/0xb0
[   54.925427][    C1]  sock_read_iter+0x15f/0x1e0
[   54.930299][    C1]  new_sync_read+0x389/0x4f0
[   54.934971][    C1]  __vfs_read+0xb1/0xc0
[   54.939568][    C1]  vfs_read+0x143/0x2c0
[   54.943809][    C1]  ksys_read+0xd5/0x1b0
[   54.948127][    C1]  __x64_sys_read+0x4c/0x60
[   54.952827][    C1]  do_syscall_64+0xcf/0x2f0
[   54.957608][    C1]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   54.963489][    C1] 
[   54.966109][    C1] read to 0xffff888120f1530c of 4 bytes by interrupt on cpu 1:
[   54.974159][    C1]  tcp_add_backlog+0x43/0xcc0
[   54.978839][    C1]  tcp_v4_rcv+0x1aba/0x1bf0
[   54.983690][    C1]  ip_protocol_deliver_rcu+0x51/0x470
[   54.989687][    C1]  ip_local_deliver_finish+0x110/0x140
[   54.995254][    C1]  ip_local_deliver+0x133/0x210
[   55.000402][    C1]  ip_rcv_finish+0x121/0x160
[   55.005321][    C1]  ip_rcv+0x18f/0x1a0
[   55.009645][    C1]  __netif_receive_skb_one_core+0xa7/0xe0
[   55.015356][    C1]  __netif_receive_skb+0x37/0xf0
[   55.020283][    C1]  netif_receive_skb_internal+0x59/0x190
[   55.025902][    C1]  napi_gro_receive+0x28f/0x330
[   55.030752][    C1]  receive_buf+0x284/0x30b0
[   55.035396][    C1]  virtnet_poll+0x436/0x7d0
[   55.040194][    C1] 
[   55.042520][    C1] Reported by Kernel Concurrency Sanitizer on:
[   55.048769][    C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.3.0+ #0
[   55.055830][    C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   55.066008][    C1] ==================================================================
[   55.074179][    C1] Kernel panic - not syncing: panic_on_warn set ...
[   55.080763][    C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.3.0+ #0
[   55.087775][    C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   55.097819][    C1] Call Trace:
[   55.101236][    C1]  dump_stack+0xf5/0x159
[   55.105482][    C1]  panic+0x209/0x639
[   55.109378][    C1]  ? __netif_receive_skb+0x37/0xf0
[   55.114566][    C1]  ? vprintk_func+0x8d/0x140
[   55.119248][    C1]  kcsan_report.cold+0xc/0x1b
[   55.124061][    C1]  __kcsan_setup_watchpoint+0x3ee/0x510
[   55.129819][    C1]  ? __kcsan_setup_watchpoint+0x96/0x510
[   55.135540][    C1]  __tsan_read4+0x2c/0x30
[   55.139947][    C1]  tcp_add_backlog+0x43/0xcc0
[   55.144710][    C1]  ? __rcu_read_unlock+0x62/0xe0
[   55.149730][    C1]  ? __kcsan_setup_watchpoint+0x96/0x510
[   55.155449][    C1]  ? sk_filter_trim_cap+0x230/0x520
[   55.160882][    C1]  ? __kcsan_setup_watchpoint+0x96/0x510
[   55.166512][    C1]  ? __tsan_write1+0x32/0x40
[   55.171206][    C1]  tcp_v4_rcv+0x1aba/0x1bf0
[   55.175765][    C1]  ? __tsan_read8+0x2c/0x30
[   55.180365][    C1]  ip_protocol_deliver_rcu+0x51/0x470
[   55.186043][    C1]  ip_local_deliver_finish+0x110/0x140
[   55.191501][    C1]  ip_local_deliver+0x133/0x210
[   55.196557][    C1]  ? ip_protocol_deliver_rcu+0x470/0x470
[   55.202282][    C1]  ip_rcv_finish+0x121/0x160
[   55.207205][    C1]  ip_rcv+0x18f/0x1a0
[   55.211362][    C1]  ? ip_sublist_rcv+0x5e0/0x5e0
[   55.216413][    C1]  ? ip_local_deliver+0x210/0x210
[   55.221609][    C1]  __netif_receive_skb_one_core+0xa7/0xe0
[   55.227329][    C1]  __netif_receive_skb+0x37/0xf0
[   55.232267][    C1]  netif_receive_skb_internal+0x59/0x190
[   55.237893][    C1]  napi_gro_receive+0x28f/0x330
[   55.242755][    C1]  receive_buf+0x284/0x30b0
[   55.247260][    C1]  ? __tsan_write8+0x32/0x40
[   55.251943][    C1]  ? virtqueue_get_buf_ctx+0x4fd/0x5c0
[   55.257402][    C1]  ? __kcsan_setup_watchpoint+0x96/0x510
[   55.263405][    C1]  ? __kcsan_setup_watchpoint+0x96/0x510
[   55.269148][    C1]  virtnet_poll+0x436/0x7d0
[   55.273661][    C1]  net_rx_action+0x3ae/0xa50
[   55.278345][    C1]  __do_softirq+0x115/0x33f
[   55.283387][    C1]  ? takeover_tasklets+0x250/0x250
[   55.288494][    C1]  run_ksoftirqd+0x46/0x60
[   55.293063][    C1]  smpboot_thread_fn+0x37d/0x4a0
[   55.298046][    C1]  kthread+0x1d4/0x200
[   55.302389][    C1]  ? constant_test_bit.constprop.0+0x30/0x30
[   55.308463][    C1]  ? kthread_bind+0x50/0x50
[   55.313090][    C1]  ret_from_fork+0x1f/0x30
[   55.323396][    C1] Kernel Offset: disabled
[   55.327971][    C1] Rebooting in 86400 seconds..