Warning: Permanently added '10.128.0.236' (ECDSA) to the list of known hosts.
2019/10/22 14:45:51 fuzzer started
2019/10/22 14:45:53 dialing manager at 10.128.0.105:33369
2019/10/22 14:45:53 syscalls: 2524
2019/10/22 14:45:53 code coverage: enabled
2019/10/22 14:45:53 comparison tracing: enabled
2019/10/22 14:45:53 extra coverage: extra coverage is not supported by the kernel
2019/10/22 14:45:53 setuid sandbox: enabled
2019/10/22 14:45:53 namespace sandbox: enabled
2019/10/22 14:45:53 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/22 14:45:53 fault injection: enabled
2019/10/22 14:45:53 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/22 14:45:53 net packet injection: enabled
2019/10/22 14:45:53 net device setup: enabled
2019/10/22 14:45:53 concurrency sanitizer: enabled
syzkaller login: [   49.419826][    C0] ==================================================================
[   49.427937][    C0] BUG: KCSAN: data-race in __tcp_select_window / tcp_add_backlog
[   49.435628][    C0] 
[   49.437949][    C0] read to 0xffff88812118a12c of 4 bytes by task 7127 on cpu 1:
[   49.445488][    C0]  __tcp_select_window+0x6b/0x4d0
[   49.450493][    C0]  __tcp_transmit_skb+0x700/0x1d60
[   49.455582][    C0]  __tcp_send_ack+0x246/0x300
[   49.460240][    C0]  tcp_send_ack+0x34/0x40
[   49.464554][    C0]  tcp_cleanup_rbuf+0x130/0x360
[   49.469384][    C0]  tcp_recvmsg+0x633/0x1a30
[   49.473867][    C0]  inet_recvmsg+0xbb/0x250
[   49.478270][    C0]  sock_recvmsg+0x92/0xb0
[   49.482580][    C0]  sock_read_iter+0x15f/0x1e0
[   49.487240][    C0]  new_sync_read+0x389/0x4f0
[   49.491809][    C0]  __vfs_read+0xb1/0xc0
[   49.495945][    C0]  vfs_read+0x143/0x2c0
[   49.500079][    C0]  ksys_read+0xd5/0x1b0
[   49.504217][    C0]  __x64_sys_read+0x4c/0x60
[   49.508691][    C0] 
[   49.511006][    C0] write to 0xffff88812118a12c of 4 bytes by interrupt on cpu 0:
[   49.518614][    C0]  tcp_add_backlog+0x4a0/0xcc0
[   49.523361][    C0]  tcp_v4_rcv+0x1a60/0x1bb0
[   49.527864][    C0]  ip_protocol_deliver_rcu+0x4d/0x420
[   49.533213][    C0]  ip_local_deliver_finish+0x110/0x140
[   49.538654][    C0]  ip_local_deliver+0x133/0x210
[   49.543483][    C0]  ip_rcv_finish+0x121/0x160
[   49.548048][    C0]  ip_rcv+0x18f/0x1a0
[   49.552010][    C0]  __netif_receive_skb_one_core+0xa7/0xe0
[   49.557713][    C0]  __netif_receive_skb+0x37/0xf0
[   49.562632][    C0]  netif_receive_skb_internal+0x59/0x190
[   49.568250][    C0]  napi_gro_receive+0x28f/0x330
[   49.573085][    C0]  receive_buf+0x284/0x30b0
[   49.577568][    C0]  virtnet_poll+0x436/0x7d0
[   49.582041][    C0] 
[   49.584344][    C0] Reported by Kernel Concurrency Sanitizer on:
[   49.590477][    C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.4.0-rc3+ #0
[   49.597734][    C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   49.607767][    C0] ==================================================================
[   49.615808][    C0] Kernel panic - not syncing: panic_on_warn set ...
[   49.622379][    C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.4.0-rc3+ #0
[   49.629650][    C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   49.639681][    C0] Call Trace:
[   49.642958][    C0]  dump_stack+0xf5/0x159
[   49.647193][    C0]  panic+0x210/0x640
[   49.651077][    C0]  ? __netif_receive_skb+0x37/0xf0
[   49.656169][    C0]  ? vprintk_func+0x8d/0x140
[   49.660744][    C0]  kcsan_report.cold+0xc/0x10
[   49.665410][    C0]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   49.670937][    C0]  __tsan_write4+0x32/0x40
[   49.675353][    C0]  tcp_add_backlog+0x4a0/0xcc0
[   49.680110][    C0]  tcp_v4_rcv+0x1a60/0x1bb0
[   49.684600][    C0]  ? __tsan_read8+0x2c/0x30
[   49.689090][    C0]  ip_protocol_deliver_rcu+0x4d/0x420
[   49.694456][    C0]  ip_local_deliver_finish+0x110/0x140
[   49.699897][    C0]  ip_local_deliver+0x133/0x210
[   49.704731][    C0]  ? ip_protocol_deliver_rcu+0x420/0x420
[   49.710347][    C0]  ip_rcv_finish+0x121/0x160
[   49.714918][    C0]  ip_rcv+0x18f/0x1a0
[   49.718882][    C0]  ? ip_sublist_rcv+0x5e0/0x5e0
[   49.723714][    C0]  ? ip_local_deliver+0x210/0x210
[   49.728722][    C0]  __netif_receive_skb_one_core+0xa7/0xe0
[   49.734427][    C0]  __netif_receive_skb+0x37/0xf0
[   49.739348][    C0]  netif_receive_skb_internal+0x59/0x190
[   49.744964][    C0]  napi_gro_receive+0x28f/0x330
[   49.749797][    C0]  receive_buf+0x284/0x30b0
[   49.754284][    C0]  ? __tsan_write8+0x32/0x40
[   49.758871][    C0]  ? virtqueue_get_buf_ctx+0x4fd/0x5c0
[   49.764323][    C0]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   49.769934][    C0]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   49.775548][    C0]  virtnet_poll+0x436/0x7d0
[   49.780037][    C0]  ? __sanitizer_cov_trace_cmp2+0x18/0x20
[   49.785743][    C0]  net_rx_action+0x3ae/0xa90
[   49.790321][    C0]  __do_softirq+0x115/0x33f
[   49.794808][    C0]  ? takeover_tasklets+0x250/0x250
[   49.799905][    C0]  run_ksoftirqd+0x46/0x60
[   49.804303][    C0]  smpboot_thread_fn+0x37d/0x4a0
[   49.809227][    C0]  kthread+0x1d4/0x200
[   49.813281][    C0]  ? constant_test_bit.constprop.0+0x30/0x30
[   49.819250][    C0]  ? kthread_stop+0x2d0/0x2d0
[   49.823910][    C0]  ret_from_fork+0x1f/0x30
[   49.829390][    C0] Kernel Offset: disabled
[   49.833706][    C0] Rebooting in 86400 seconds..