Warning: Permanently added '10.128.0.77' (ECDSA) to the list of known hosts.
2019/10/04 12:21:05 fuzzer started
2019/10/04 12:21:07 dialing manager at 10.128.0.105:38119
2019/10/04 12:21:07 syscalls: 2523
2019/10/04 12:21:07 code coverage: enabled
2019/10/04 12:21:07 comparison tracing: enabled
2019/10/04 12:21:07 extra coverage: extra coverage is not supported by the kernel
2019/10/04 12:21:07 setuid sandbox: enabled
2019/10/04 12:21:07 namespace sandbox: enabled
2019/10/04 12:21:07 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/04 12:21:07 fault injection: enabled
2019/10/04 12:21:07 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/04 12:21:07 net packet injection: enabled
2019/10/04 12:21:07 net device setup: enabled
2019/10/04 12:21:07 concurrency sanitizer: enabled
syzkaller login: [   55.632818][    C0] ==================================================================
[   55.641548][    C0] BUG: KCSAN: data-race in tcp_add_backlog+0x45a/0xcc0 and tcp_recvmsg+0x470/0x1a30
[   55.650937][    C0] 
[   55.653353][    C0] read to 0xffff88811f4992f8 of 8 bytes by task 7294 on cpu 1:
[   55.660919][    C0]  tcp_recvmsg+0x470/0x1a30
[   55.665415][    C0]  inet_recvmsg+0xbb/0x250
[   55.669813][    C0]  sock_recvmsg+0x92/0xb0
[   55.674126][    C0]  sock_read_iter+0x15f/0x1e0
[   55.678827][    C0]  new_sync_read+0x389/0x4f0
[   55.683416][    C0]  __vfs_read+0xb1/0xc0
[   55.687563][    C0]  vfs_read+0x143/0x2c0
[   55.691708][    C0]  ksys_read+0xd5/0x1b0
[   55.695848][    C0]  __x64_sys_read+0x4c/0x60
[   55.700362][    C0]  do_syscall_64+0xcf/0x2f0
[   55.704856][    C0]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   55.710811][    C0] 
[   55.713126][    C0] write to 0xffff88811f4992f8 of 8 bytes by interrupt on cpu 0:
[   55.720741][    C0]  tcp_add_backlog+0x45a/0xcc0
[   55.726354][    C0]  tcp_v4_rcv+0x1aba/0x1bf0
[   55.730842][    C0]  ip_protocol_deliver_rcu+0x51/0x470
[   55.736205][    C0]  ip_local_deliver_finish+0x110/0x140
[   55.741646][    C0]  ip_local_deliver+0x133/0x210
[   55.746489][    C0]  ip_rcv_finish+0x121/0x160
[   55.751065][    C0]  ip_rcv+0x18f/0x1a0
[   55.755125][    C0]  __netif_receive_skb_one_core+0xa7/0xe0
[   55.760828][    C0]  __netif_receive_skb+0x37/0xf0
[   55.765760][    C0]  netif_receive_skb_internal+0x59/0x190
[   55.771619][    C0]  napi_gro_receive+0x28f/0x330
[   55.776462][    C0]  receive_buf+0x284/0x30b0
[   55.781211][    C0]  virtnet_poll+0x436/0x7d0
[   55.785688][    C0] 
[   55.787996][    C0] Reported by Kernel Concurrency Sanitizer on:
[   55.794134][    C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.3.0+ #0
[   55.801049][    C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   55.811358][    C0] ==================================================================
[   55.819715][    C0] Kernel panic - not syncing: panic_on_warn set ...
[   55.827173][    C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.3.0+ #0
[   55.834090][    C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   55.844131][    C0] Call Trace:
[   55.847586][    C0]  dump_stack+0xf5/0x159
[   55.851824][    C0]  panic+0x209/0x639
[   55.855708][    C0]  ? vprintk_func+0x8d/0x140
[   55.860294][    C0]  kcsan_report.cold+0x57/0xeb
[   55.865416][    C0]  __kcsan_setup_watchpoint+0x342/0x500
[   55.871038][    C0]  __tsan_write8+0x32/0x40
[   55.875446][    C0]  tcp_add_backlog+0x45a/0xcc0
[   55.880211][    C0]  ? __rcu_read_unlock+0x62/0xe0
[   55.885236][    C0]  tcp_v4_rcv+0x1aba/0x1bf0
[   55.889816][    C0]  ? __tsan_read8+0x2c/0x30
[   55.894324][    C0]  ip_protocol_deliver_rcu+0x51/0x470
[   55.899702][    C0]  ip_local_deliver_finish+0x110/0x140
[   55.905152][    C0]  ip_local_deliver+0x133/0x210
[   55.909995][    C0]  ? ip_protocol_deliver_rcu+0x470/0x470
[   55.915623][    C0]  ip_rcv_finish+0x121/0x160
[   55.920498][    C0]  ip_rcv+0x18f/0x1a0
[   55.924563][    C0]  ? ip_sublist_rcv+0x5e0/0x5e0
[   55.929534][    C0]  ? ip_local_deliver+0x210/0x210
[   55.934829][    C0]  __netif_receive_skb_one_core+0xa7/0xe0
[   55.940622][    C0]  __netif_receive_skb+0x37/0xf0
[   55.945722][    C0]  netif_receive_skb_internal+0x59/0x190
[   55.951357][    C0]  napi_gro_receive+0x28f/0x330
[   55.956202][    C0]  receive_buf+0x284/0x30b0
[   55.960701][    C0]  ? __tsan_write8+0x32/0x40
[   55.965288][    C0]  ? virtqueue_get_buf_ctx+0x4fd/0x5c0
[   55.970751][    C0]  ? virtqueue_get_buf+0x31/0x40
[   55.975711][    C0]  virtnet_poll+0x436/0x7d0
[   55.980223][    C0]  net_rx_action+0x3ae/0xa50
[   55.984830][    C0]  __do_softirq+0x115/0x33f
[   55.989327][    C0]  ? takeover_tasklets+0x250/0x250
[   55.994454][    C0]  run_ksoftirqd+0x46/0x60
[   55.998863][    C0]  smpboot_thread_fn+0x37d/0x4a0
[   56.003879][    C0]  kthread+0x1d4/0x200
[   56.007944][    C0]  ? constant_test_bit.constprop.0+0x30/0x30
[   56.013912][    C0]  ? kthread_bind+0x50/0x50
[   56.018422][    C0]  ret_from_fork+0x1f/0x30
[   56.024402][    C0] Kernel Offset: disabled
[   56.029113][    C0] Rebooting in 86400 seconds..