Warning: Permanently added '10.128.0.201' (ECDSA) to the list of known hosts.
2019/10/22 18:40:22 fuzzer started
2019/10/22 18:40:24 dialing manager at 10.128.0.105:33369
2019/10/22 18:40:24 syscalls: 2524
2019/10/22 18:40:24 code coverage: enabled
2019/10/22 18:40:24 comparison tracing: enabled
2019/10/22 18:40:24 extra coverage: extra coverage is not supported by the kernel
2019/10/22 18:40:24 setuid sandbox: enabled
2019/10/22 18:40:24 namespace sandbox: enabled
2019/10/22 18:40:24 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/22 18:40:24 fault injection: enabled
2019/10/22 18:40:24 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/22 18:40:24 net packet injection: enabled
2019/10/22 18:40:24 net device setup: enabled
2019/10/22 18:40:24 concurrency sanitizer: enabled
syzkaller login: [   55.706743][    C1] ==================================================================
[   55.714987][    C1] BUG: KCSAN: data-race in __nf_conntrack_find_get / __nf_ct_refresh_acct
[   55.724062][    C1] 
[   55.726371][    C1] write to 0xffff88811c4bd008 of 4 bytes by task 7180 on cpu 0:
[   55.733978][    C1]  __nf_ct_refresh_acct+0xfb/0x1b0
[   55.739079][    C1]  nf_conntrack_tcp_packet+0xd40/0x3390
[   55.744610][    C1]  nf_conntrack_in+0x410/0xa80
[   55.749357][    C1]  ipv4_conntrack_local+0xbe/0x130
[   55.754451][    C1]  nf_hook_slow+0x83/0x160
[   55.758847][    C1]  __ip_local_out+0x1f7/0x2b0
[   55.763507][    C1]  ip_local_out+0x31/0x90
[   55.767808][    C1]  __ip_queue_xmit+0x3a8/0xa40
[   55.772547][    C1]  ip_queue_xmit+0x45/0x60
[   55.776937][    C1]  __tcp_transmit_skb+0xe81/0x1d60
[   55.782030][    C1]  __tcp_send_ack+0x246/0x300
[   55.786679][    C1]  tcp_send_ack+0x34/0x40
[   55.790987][    C1]  __tcp_ack_snd_check+0xd9/0x4f0
[   55.795985][    C1]  tcp_rcv_established+0x750/0xf50
[   55.801066][    C1] 
[   55.803476][    C1] read to 0xffff88811c4bd008 of 4 bytes by interrupt on cpu 1:
[   55.810995][    C1]  __nf_conntrack_find_get+0x284/0x880
[   55.816452][    C1]  nf_conntrack_in+0x2ef/0xa80
[   55.821290][    C1]  ipv4_conntrack_in+0x27/0x40
[   55.826041][    C1]  nf_hook_slow+0x83/0x160
[   55.830451][    C1]  ip_rcv+0x12f/0x1a0
[   55.834425][    C1]  __netif_receive_skb_one_core+0xa7/0xe0
[   55.840143][    C1]  __netif_receive_skb+0x37/0xf0
[   55.845071][    C1]  netif_receive_skb_internal+0x59/0x190
[   55.850690][    C1]  napi_gro_receive+0x28f/0x330
[   55.855517][    C1]  receive_buf+0x284/0x30b0
[   55.860014][    C1]  virtnet_poll+0x436/0x7d0
[   55.864493][    C1]  net_rx_action+0x3ae/0xa90
[   55.869072][    C1]  __do_softirq+0x115/0x33f
[   55.873545][    C1] 
[   55.875847][    C1] Reported by Kernel Concurrency Sanitizer on:
[   55.881993][    C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.4.0-rc3+ #0
[   55.889336][    C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   55.899364][    C1] ==================================================================
[   55.907397][    C1] Kernel panic - not syncing: panic_on_warn set ...
[   55.913961][    C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.4.0-rc3+ #0
[   55.921298][    C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   55.931340][    C1] Call Trace:
[   55.934612][    C1]  dump_stack+0xf5/0x159
[   55.938843][    C1]  panic+0x210/0x640
[   55.942715][    C1]  ? napi_gro_receive+0x28f/0x330
[   55.947718][    C1]  ? vprintk_func+0x8d/0x140
[   55.952376][    C1]  kcsan_report.cold+0xc/0x10
[   55.963543][    C1]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   55.969066][    C1]  __tsan_read4+0x2c/0x30
[   55.973378][    C1]  __nf_conntrack_find_get+0x284/0x880
[   55.978815][    C1]  ? __tsan_write2+0x32/0x40
[   55.983391][    C1]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   55.989006][    C1]  nf_conntrack_in+0x2ef/0xa80
[   55.993750][    C1]  ipv4_conntrack_in+0x27/0x40
[   55.998491][    C1]  nf_hook_slow+0x83/0x160
[   56.002894][    C1]  ? nf_ct_bridge_unregister+0x70/0x70
[   56.008341][    C1]  ip_rcv+0x12f/0x1a0
[   56.012299][    C1]  ? ip_sublist_rcv+0x5e0/0x5e0
[   56.017123][    C1]  ? ip_local_deliver+0x210/0x210
[   56.022126][    C1]  __netif_receive_skb_one_core+0xa7/0xe0
[   56.027831][    C1]  __netif_receive_skb+0x37/0xf0
[   56.032760][    C1]  netif_receive_skb_internal+0x59/0x190
[   56.038386][    C1]  napi_gro_receive+0x28f/0x330
[   56.043216][    C1]  receive_buf+0x284/0x30b0
[   56.047699][    C1]  ? __tsan_write8+0x32/0x40
[   56.052270][    C1]  ? virtqueue_get_buf_ctx+0x4fd/0x5c0
[   56.057707][    C1]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   56.063325][    C1]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   56.068945][    C1]  virtnet_poll+0x436/0x7d0
[   56.073434][    C1]  net_rx_action+0x3ae/0xa90
[   56.078018][    C1]  __do_softirq+0x115/0x33f
[   56.082590][    C1]  ? takeover_tasklets+0x250/0x250
[   56.087692][    C1]  run_ksoftirqd+0x46/0x60
[   56.092132][    C1]  smpboot_thread_fn+0x37d/0x4a0
[   56.097665][    C1]  kthread+0x1d4/0x200
[   56.101714][    C1]  ? constant_test_bit.constprop.0+0x30/0x30
[   56.107755][    C1]  ? kthread_stop+0x2d0/0x2d0
[   56.112411][    C1]  ret_from_fork+0x1f/0x30
[   56.118266][    C1] Kernel Offset: disabled
[   56.122589][    C1] Rebooting in 86400 seconds..