Warning: Permanently added '10.128.0.173' (ECDSA) to the list of known hosts.
2019/10/22 21:42:39 fuzzer started
2019/10/22 21:42:41 dialing manager at 10.128.0.105:33369
2019/10/22 21:42:41 syscalls: 2524
2019/10/22 21:42:41 code coverage: enabled
2019/10/22 21:42:41 comparison tracing: enabled
2019/10/22 21:42:41 extra coverage: extra coverage is not supported by the kernel
2019/10/22 21:42:41 setuid sandbox: enabled
2019/10/22 21:42:41 namespace sandbox: enabled
2019/10/22 21:42:41 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/22 21:42:41 fault injection: enabled
2019/10/22 21:42:41 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/22 21:42:41 net packet injection: enabled
2019/10/22 21:42:41 net device setup: enabled
2019/10/22 21:42:41 concurrency sanitizer: enabled
syzkaller login: [   47.788777][    C0] ==================================================================
[   47.796894][    C0] BUG: KCSAN: data-race in __nf_conntrack_find_get / __nf_ct_refresh_acct
[   47.805361][    C0] 
[   47.807700][    C0] write to 0xffff8881293b7008 of 4 bytes by task 7315 on cpu 1:
[   47.815343][    C0]  __nf_ct_refresh_acct+0xfb/0x1b0
[   47.820430][    C0]  nf_conntrack_tcp_packet+0xd40/0x3390
[   47.825950][    C0]  nf_conntrack_in+0x410/0xa80
[   47.830688][    C0]  ipv4_conntrack_local+0xbe/0x130
[   47.835773][    C0]  nf_hook_slow+0x83/0x160
[   47.840165][    C0]  __ip_local_out+0x1f7/0x2b0
[   47.844815][    C0]  ip_local_out+0x31/0x90
[   47.849121][    C0]  __ip_queue_xmit+0x3a8/0xa40
[   47.853857][    C0]  ip_queue_xmit+0x45/0x60
[   47.858245][    C0]  __tcp_transmit_skb+0xe81/0x1d60
[   47.863346][    C0]  __tcp_send_ack+0x246/0x300
[   47.868005][    C0]  tcp_send_ack+0x34/0x40
[   47.872310][    C0]  tcp_cleanup_rbuf+0x130/0x360
[   47.877138][    C0]  tcp_recvmsg+0x633/0x1a30
[   47.881612][    C0] 
[   47.883930][    C0] read to 0xffff8881293b7008 of 4 bytes by interrupt on cpu 0:
[   47.891449][    C0]  __nf_conntrack_find_get+0x284/0x880
[   47.896886][    C0]  nf_conntrack_in+0x2ef/0xa80
[   47.901634][    C0]  ipv4_conntrack_in+0x27/0x40
[   47.906377][    C0]  nf_hook_slow+0x83/0x160
[   47.910781][    C0]  ip_rcv+0x12f/0x1a0
[   47.914742][    C0]  __netif_receive_skb_one_core+0xa7/0xe0
[   47.920448][    C0]  __netif_receive_skb+0x37/0xf0
[   47.925374][    C0]  netif_receive_skb_internal+0x59/0x190
[   47.930982][    C0]  napi_gro_receive+0x28f/0x330
[   47.935806][    C0]  receive_buf+0x284/0x30b0
[   47.940282][    C0]  virtnet_poll+0x436/0x7d0
[   47.944761][    C0]  net_rx_action+0x3ae/0xa90
[   47.949334][    C0]  __do_softirq+0x115/0x33f
[   47.953814][    C0] 
[   47.956112][    C0] Reported by Kernel Concurrency Sanitizer on:
[   47.962243][    C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.4.0-rc3+ #0
[   47.969497][    C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   47.979539][    C0] ==================================================================
[   47.987639][    C0] Kernel panic - not syncing: panic_on_warn set ...
[   47.994214][    C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.4.0-rc3+ #0
[   48.001469][    C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   48.011500][    C0] Call Trace:
[   48.014776][    C0]  dump_stack+0xf5/0x159
[   48.018997][    C0]  panic+0x210/0x640
[   48.022885][    C0]  ? napi_gro_receive+0x28f/0x330
[   48.027883][    C0]  ? vprintk_func+0x8d/0x140
[   48.032454][    C0]  kcsan_report.cold+0xc/0x10
[   48.037117][    C0]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   48.042642][    C0]  __tsan_read4+0x2c/0x30
[   48.046953][    C0]  __nf_conntrack_find_get+0x284/0x880
[   48.052384][    C0]  ? __tsan_write2+0x32/0x40
[   48.056950][    C0]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   48.062581][    C0]  nf_conntrack_in+0x2ef/0xa80
[   48.067325][    C0]  ipv4_conntrack_in+0x27/0x40
[   48.072068][    C0]  nf_hook_slow+0x83/0x160
[   48.076461][    C0]  ? nf_ct_bridge_unregister+0x70/0x70
[   48.081907][    C0]  ip_rcv+0x12f/0x1a0
[   48.085868][    C0]  ? ip_sublist_rcv+0x5e0/0x5e0
[   48.090695][    C0]  ? ip_local_deliver+0x210/0x210
[   48.095696][    C0]  __netif_receive_skb_one_core+0xa7/0xe0
[   48.101401][    C0]  __netif_receive_skb+0x37/0xf0
[   48.106320][    C0]  netif_receive_skb_internal+0x59/0x190
[   48.111930][    C0]  napi_gro_receive+0x28f/0x330
[   48.116759][    C0]  receive_buf+0x284/0x30b0
[   48.121248][    C0]  ? __tsan_write8+0x32/0x40
[   48.125828][    C0]  ? virtqueue_get_buf_ctx+0x4fd/0x5c0
[   48.131271][    C0]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   48.136884][    C0]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   48.142494][    C0]  virtnet_poll+0x436/0x7d0
[   48.146987][    C0]  net_rx_action+0x3ae/0xa90
[   48.151558][    C0]  __do_softirq+0x115/0x33f
[   48.156054][    C0]  ? takeover_tasklets+0x250/0x250
[   48.161233][    C0]  run_ksoftirqd+0x46/0x60
[   48.165639][    C0]  smpboot_thread_fn+0x37d/0x4a0
[   48.170557][    C0]  kthread+0x1d4/0x200
[   48.174603][    C0]  ? constant_test_bit.constprop.0+0x30/0x30
[   48.180562][    C0]  ? kthread_stop+0x2d0/0x2d0
[   48.185229][    C0]  ret_from_fork+0x1f/0x30
[   48.190743][    C0] Kernel Offset: disabled
[   48.195062][    C0] Rebooting in 86400 seconds..