Warning: Permanently added '10.128.10.3' (ECDSA) to the list of known hosts.
2019/10/22 20:40:46 fuzzer started
2019/10/22 20:40:48 dialing manager at 10.128.0.105:33369
2019/10/22 20:40:48 syscalls: 2524
2019/10/22 20:40:48 code coverage: enabled
2019/10/22 20:40:48 comparison tracing: enabled
2019/10/22 20:40:48 extra coverage: extra coverage is not supported by the kernel
2019/10/22 20:40:48 setuid sandbox: enabled
2019/10/22 20:40:48 namespace sandbox: enabled
2019/10/22 20:40:48 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/22 20:40:48 fault injection: enabled
2019/10/22 20:40:48 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/22 20:40:48 net packet injection: enabled
2019/10/22 20:40:48 net device setup: enabled
2019/10/22 20:40:48 concurrency sanitizer: enabled
syzkaller login: [   47.453376][    C1] ==================================================================
[   47.461498][    C1] BUG: KCSAN: data-race in __tcp_select_window / tcp_add_backlog
[   47.469188][    C1] 
[   47.471503][    C1] read to 0xffff888126ab412c of 4 bytes by task 7221 on cpu 0:
[   47.479040][    C1]  __tcp_select_window+0x6b/0x4d0
[   47.484051][    C1]  __tcp_transmit_skb+0x700/0x1d60
[   47.489146][    C1]  __tcp_send_ack+0x246/0x300
[   47.494157][    C1]  tcp_send_ack+0x34/0x40
[   47.498468][    C1]  tcp_cleanup_rbuf+0x130/0x360
[   47.503311][    C1]  tcp_recvmsg+0x633/0x1a30
[   47.507793][    C1]  inet_recvmsg+0xbb/0x250
[   47.512190][    C1]  sock_recvmsg+0x92/0xb0
[   47.516502][    C1]  sock_read_iter+0x15f/0x1e0
[   47.521251][    C1]  new_sync_read+0x389/0x4f0
[   47.525819][    C1]  __vfs_read+0xb1/0xc0
[   47.529975][    C1]  vfs_read+0x143/0x2c0
[   47.534120][    C1]  ksys_read+0xd5/0x1b0
[   47.538255][    C1]  __x64_sys_read+0x4c/0x60
[   47.542741][    C1] 
[   47.545054][    C1] write to 0xffff888126ab412c of 4 bytes by interrupt on cpu 1:
[   47.552662][    C1]  tcp_add_backlog+0x4a0/0xcc0
[   47.557406][    C1]  tcp_v4_rcv+0x1a60/0x1bb0
[   47.561890][    C1]  ip_protocol_deliver_rcu+0x4d/0x420
[   47.567242][    C1]  ip_local_deliver_finish+0x110/0x140
[   47.572681][    C1]  ip_local_deliver+0x133/0x210
[   47.577532][    C1]  ip_rcv_finish+0x121/0x160
[   47.582113][    C1]  ip_rcv+0x18f/0x1a0
[   47.586077][    C1]  __netif_receive_skb_one_core+0xa7/0xe0
[   47.591950][    C1]  __netif_receive_skb+0x37/0xf0
[   47.596870][    C1]  netif_receive_skb_internal+0x59/0x190
[   47.602485][    C1]  napi_gro_receive+0x28f/0x330
[   47.607313][    C1]  receive_buf+0x284/0x30b0
[   47.611795][    C1]  virtnet_poll+0x436/0x7d0
[   47.616271][    C1] 
[   47.618579][    C1] Reported by Kernel Concurrency Sanitizer on:
[   47.624715][    C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.4.0-rc3+ #0
[   47.632060][    C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   47.642096][    C1] ==================================================================
[   47.650220][    C1] Kernel panic - not syncing: panic_on_warn set ...
[   47.656790][    C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.4.0-rc3+ #0
[   47.664132][    C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   47.674166][    C1] Call Trace:
[   47.677445][    C1]  dump_stack+0xf5/0x159
[   47.681674][    C1]  panic+0x210/0x640
[   47.685557][    C1]  ? __netif_receive_skb+0x37/0xf0
[   47.690654][    C1]  ? vprintk_func+0x8d/0x140
[   47.695239][    C1]  kcsan_report.cold+0xc/0x10
[   47.699905][    C1]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   47.705436][    C1]  __tsan_write4+0x32/0x40
[   47.709855][    C1]  tcp_add_backlog+0x4a0/0xcc0
[   47.714618][    C1]  tcp_v4_rcv+0x1a60/0x1bb0
[   47.719112][    C1]  ? __tsan_read8+0x2c/0x30
[   47.723603][    C1]  ip_protocol_deliver_rcu+0x4d/0x420
[   47.728966][    C1]  ip_local_deliver_finish+0x110/0x140
[   47.734407][    C1]  ip_local_deliver+0x133/0x210
[   47.739244][    C1]  ? ip_protocol_deliver_rcu+0x420/0x420
[   47.744872][    C1]  ip_rcv_finish+0x121/0x160
[   47.749460][    C1]  ip_rcv+0x18f/0x1a0
[   47.753432][    C1]  ? ip_sublist_rcv+0x5e0/0x5e0
[   47.758528][    C1]  ? ip_local_deliver+0x210/0x210
[   47.763537][    C1]  __netif_receive_skb_one_core+0xa7/0xe0
[   47.769252][    C1]  __netif_receive_skb+0x37/0xf0
[   47.774172][    C1]  netif_receive_skb_internal+0x59/0x190
[   47.780312][    C1]  napi_gro_receive+0x28f/0x330
[   47.785148][    C1]  receive_buf+0x284/0x30b0
[   47.789635][    C1]  ? __tsan_write8+0x32/0x40
[   47.794215][    C1]  ? virtqueue_get_buf_ctx+0x4fd/0x5c0
[   47.799655][    C1]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   47.805268][    C1]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   47.810897][    C1]  virtnet_poll+0x436/0x7d0
[   47.815648][    C1]  ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[   47.821878][    C1]  net_rx_action+0x3ae/0xa90
[   47.826635][    C1]  __do_softirq+0x115/0x33f
[   47.831133][    C1]  ? takeover_tasklets+0x250/0x250
[   47.836241][    C1]  run_ksoftirqd+0x46/0x60
[   47.840640][    C1]  smpboot_thread_fn+0x37d/0x4a0
[   47.845565][    C1]  kthread+0x1d4/0x200
[   47.849617][    C1]  ? constant_test_bit.constprop.0+0x30/0x30
[   47.856451][    C1]  ? kthread_stop+0x2d0/0x2d0
[   47.861109][    C1]  ret_from_fork+0x1f/0x30
[   47.866752][    C1] Kernel Offset: disabled
[   47.871313][    C1] Rebooting in 86400 seconds..