Warning: Permanently added '10.128.0.89' (ECDSA) to the list of known hosts.
2019/10/06 21:29:31 fuzzer started
2019/10/06 21:29:32 dialing manager at 10.128.0.105:35709
2019/10/06 21:29:32 syscalls: 2523
2019/10/06 21:29:32 code coverage: enabled
2019/10/06 21:29:32 comparison tracing: enabled
2019/10/06 21:29:32 extra coverage: extra coverage is not supported by the kernel
2019/10/06 21:29:32 setuid sandbox: enabled
2019/10/06 21:29:32 namespace sandbox: enabled
2019/10/06 21:29:32 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/06 21:29:32 fault injection: enabled
2019/10/06 21:29:32 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/06 21:29:32 net packet injection: enabled
2019/10/06 21:29:32 net device setup: enabled
2019/10/06 21:29:32 concurrency sanitizer: enabled
syzkaller login: [   55.139322][ T7241] ==================================================================
[   55.147592][ T7241] BUG: KCSAN: data-race in tcp_add_backlog / tcp_rcv_space_adjust
[   55.155368][ T7241] 
[   55.157891][ T7241] read to 0xffff88811e9b214c of 4 bytes by interrupt on cpu 0:
[   55.165868][ T7241]  tcp_add_backlog+0x43/0xcc0
[   55.170633][ T7241]  tcp_v4_rcv+0x1aba/0x1bf0
[   55.175126][ T7241]  ip_protocol_deliver_rcu+0x51/0x470
[   55.180520][ T7241]  ip_local_deliver_finish+0x110/0x140
[   55.185972][ T7241]  ip_local_deliver+0x133/0x210
[   55.190919][ T7241]  ip_rcv_finish+0x121/0x160
[   55.195483][ T7241]  ip_rcv+0x18f/0x1a0
[   55.199445][ T7241]  __netif_receive_skb_one_core+0xa7/0xe0
[   55.205148][ T7241]  __netif_receive_skb+0x37/0xf0
[   55.210061][ T7241]  netif_receive_skb_internal+0x59/0x190
[   55.215665][ T7241]  napi_gro_receive+0x28f/0x330
[   55.220530][ T7241]  receive_buf+0x284/0x30b0
[   55.225017][ T7241]  virtnet_poll+0x436/0x7d0
[   55.229497][ T7241]  net_rx_action+0x3ae/0xa50
[   55.234056][ T7241] 
[   55.236365][ T7241] write to 0xffff88811e9b214c of 4 bytes by task 7241 on cpu 1:
[   55.244153][ T7241]  tcp_rcv_space_adjust+0x40f/0x4c0
[   55.249360][ T7241]  tcp_recvmsg+0xdaa/0x1a30
[   55.253854][ T7241]  inet_recvmsg+0xbb/0x250
[   55.258246][ T7241]  sock_recvmsg+0x92/0xb0
[   55.262549][ T7241]  sock_read_iter+0x15f/0x1e0
[   55.267203][ T7241]  new_sync_read+0x389/0x4f0
[   55.271770][ T7241]  __vfs_read+0xb1/0xc0
[   55.275902][ T7241]  vfs_read+0x143/0x2c0
[   55.280049][ T7241]  ksys_read+0xd5/0x1b0
[   55.284180][ T7241]  __x64_sys_read+0x4c/0x60
[   55.288660][ T7241]  do_syscall_64+0xcf/0x2f0
[   55.293154][ T7241]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   55.299028][ T7241] 
[   55.301333][ T7241] Reported by Kernel Concurrency Sanitizer on:
[   55.307465][ T7241] CPU: 1 PID: 7241 Comm: syz-fuzzer Not tainted 5.3.0+ #0
[   55.314558][ T7241] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   55.324675][ T7241] ==================================================================
[   55.332718][ T7241] Kernel panic - not syncing: panic_on_warn set ...
[   55.339282][ T7241] CPU: 1 PID: 7241 Comm: syz-fuzzer Not tainted 5.3.0+ #0
[   55.346361][ T7241] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   55.356404][ T7241] Call Trace:
[   55.359675][ T7241]  dump_stack+0xf5/0x159
[   55.363900][ T7241]  panic+0x209/0x639
[   55.367779][ T7241]  ? vprintk_func+0x8d/0x140
[   55.372350][ T7241]  kcsan_report.cold+0x57/0xeb
[   55.377091][ T7241]  __kcsan_setup_watchpoint+0x342/0x500
[   55.382731][ T7241]  __tsan_write4+0x32/0x40
[   55.387140][ T7241]  tcp_rcv_space_adjust+0x40f/0x4c0
[   55.392340][ T7241]  tcp_recvmsg+0xdaa/0x1a30
[   55.396839][ T7241]  inet_recvmsg+0xbb/0x250
[   55.401232][ T7241]  ? __tsan_read8+0x2c/0x30
[   55.405716][ T7241]  ? inet_sendpage+0x100/0x100
[   55.410462][ T7241]  sock_recvmsg+0x92/0xb0
[   55.414767][ T7241]  sock_read_iter+0x15f/0x1e0
[   55.419443][ T7241]  new_sync_read+0x389/0x4f0
[   55.424031][ T7241]  __vfs_read+0xb1/0xc0
[   55.428196][ T7241]  vfs_read+0x143/0x2c0
[   55.432333][ T7241]  ksys_read+0xd5/0x1b0
[   55.436492][ T7241]  __x64_sys_read+0x4c/0x60
[   55.440990][ T7241]  do_syscall_64+0xcf/0x2f0
[   55.445543][ T7241]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   55.451423][ T7241] RIP: 0033:0x47c530
[   55.455304][ T7241] Code: 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 49 c7 c2 00 00 00 00 49 c7 c0 00 00 00 00 49 c7 c1 00 00 00 00 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30
[   55.474900][ T7241] RSP: 002b:000000c420343818 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   55.483297][ T7241] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   55.491260][ T7241] RDX: 0000000000001000 RSI: 000000c4202fa000 RDI: 0000000000000003
[   55.499506][ T7241] RBP: 000000c420343870 R08: 0000000000000000 R09: 0000000000000000
[   55.507482][ T7241] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000002
[   55.515447][ T7241] R13: ffffffffffffffff R14: 0000000000000008 R15: ffffffffffffffff
[   55.525072][ T7241] Kernel Offset: disabled
[   55.529498][ T7241] Rebooting in 86400 seconds..