Warning: Permanently added '10.128.15.222' (ECDSA) to the list of known hosts.
2019/10/04 12:30:06 fuzzer started
2019/10/04 12:30:08 dialing manager at 10.128.0.105:38119
2019/10/04 12:30:08 syscalls: 2523
2019/10/04 12:30:08 code coverage: enabled
2019/10/04 12:30:08 comparison tracing: enabled
2019/10/04 12:30:08 extra coverage: extra coverage is not supported by the kernel
2019/10/04 12:30:08 setuid sandbox: enabled
2019/10/04 12:30:08 namespace sandbox: enabled
2019/10/04 12:30:08 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/04 12:30:08 fault injection: enabled
2019/10/04 12:30:08 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/04 12:30:08 net packet injection: enabled
2019/10/04 12:30:08 net device setup: enabled
2019/10/04 12:30:08 concurrency sanitizer: enabled
syzkaller login: [   54.877057][ T7330] ==================================================================
[   54.885235][ T7330] BUG: KCSAN: data-race in __tcp_select_window+0x6b/0x4d0 and tcp_add_backlog+0x4a0/0xcc0
[   54.895096][ T7330] 
[   54.897414][ T7330] write to 0xffff88811ef7aa2c of 4 bytes by interrupt on cpu 0:
[   54.905019][ T7330]  tcp_add_backlog+0x4a0/0xcc0
[   54.909852][ T7330]  tcp_v4_rcv+0x1aba/0x1bf0
[   54.914372][ T7330]  ip_protocol_deliver_rcu+0x51/0x470
[   54.919731][ T7330]  ip_local_deliver_finish+0x110/0x140
[   54.925164][ T7330]  ip_local_deliver+0x133/0x210
[   54.929988][ T7330]  ip_rcv_finish+0x121/0x160
[   54.934551][ T7330]  ip_rcv+0x18f/0x1a0
[   54.938525][ T7330]  __netif_receive_skb_one_core+0xa7/0xe0
[   54.944258][ T7330]  __netif_receive_skb+0x37/0xf0
[   54.949193][ T7330]  netif_receive_skb_internal+0x59/0x190
[   54.954799][ T7330]  napi_gro_receive+0x28f/0x330
[   54.959638][ T7330]  receive_buf+0x284/0x30b0
[   54.964130][ T7330]  virtnet_poll+0x436/0x7d0
[   54.968608][ T7330]  net_rx_action+0x3ae/0xa50
[   54.973168][ T7330] 
[   54.975473][ T7330] read to 0xffff88811ef7aa2c of 4 bytes by task 7330 on cpu 1:
[   54.982993][ T7330]  __tcp_select_window+0x6b/0x4d0
[   54.987998][ T7330]  __tcp_ack_snd_check+0x117/0x4e0
[   54.993093][ T7330]  tcp_rcv_established+0x750/0xf50
[   54.998180][ T7330]  tcp_v4_do_rcv+0x381/0x4e0
[   55.002830][ T7330]  __release_sock+0x135/0x1e0
[   55.007550][ T7330]  release_sock+0x61/0x160
[   55.011958][ T7330]  tcp_recvmsg+0x63b/0x1a30
[   55.016874][ T7330]  inet_recvmsg+0xbb/0x250
[   55.021277][ T7330]  sock_recvmsg+0x92/0xb0
[   55.025601][ T7330]  sock_read_iter+0x15f/0x1e0
[   55.030254][ T7330]  new_sync_read+0x389/0x4f0
[   55.034826][ T7330]  __vfs_read+0xb1/0xc0
[   55.038959][ T7330]  vfs_read+0x143/0x2c0
[   55.043083][ T7330] 
[   55.045385][ T7330] Reported by Kernel Concurrency Sanitizer on:
[   55.051526][ T7330] CPU: 1 PID: 7330 Comm: syz-fuzzer Not tainted 5.3.0+ #0
[   55.058692][ T7330] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   55.068722][ T7330] ==================================================================
[   55.076756][ T7330] Kernel panic - not syncing: panic_on_warn set ...
[   55.083320][ T7330] CPU: 1 PID: 7330 Comm: syz-fuzzer Not tainted 5.3.0+ #0
[   55.090405][ T7330] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   55.100451][ T7330] Call Trace:
[   55.103732][ T7330]  dump_stack+0xf5/0x159
[   55.107955][ T7330]  panic+0x209/0x639
[   55.111882][ T7330]  ? vprintk_func+0x8d/0x140
[   55.116468][ T7330]  kcsan_report.cold+0x57/0xeb
[   55.121216][ T7330]  __kcsan_setup_watchpoint+0x342/0x500
[   55.126740][ T7330]  __tsan_read4+0x2c/0x30
[   55.131057][ T7330]  __tcp_select_window+0x6b/0x4d0
[   55.136062][ T7330]  __tcp_ack_snd_check+0x117/0x4e0
[   55.141155][ T7330]  tcp_rcv_established+0x750/0xf50
[   55.146260][ T7330]  ? ipv4_dst_check+0xc6/0xf0
[   55.150930][ T7330]  tcp_v4_do_rcv+0x381/0x4e0
[   55.155519][ T7330]  __release_sock+0x135/0x1e0
[   55.160205][ T7330]  release_sock+0x61/0x160
[   55.164599][ T7330]  tcp_recvmsg+0x63b/0x1a30
[   55.169104][ T7330]  inet_recvmsg+0xbb/0x250
[   55.173496][ T7330]  ? __tsan_read8+0x2c/0x30
[   55.177980][ T7330]  ? inet_sendpage+0x100/0x100
[   55.182727][ T7330]  sock_recvmsg+0x92/0xb0
[   55.187035][ T7330]  sock_read_iter+0x15f/0x1e0
[   55.191697][ T7330]  new_sync_read+0x389/0x4f0
[   55.196270][ T7330]  __vfs_read+0xb1/0xc0
[   55.200415][ T7330]  vfs_read+0x143/0x2c0
[   55.204552][ T7330]  ksys_read+0xd5/0x1b0
[   55.208693][ T7330]  __x64_sys_read+0x4c/0x60
[   55.213184][ T7330]  do_syscall_64+0xcf/0x2f0
[   55.217669][ T7330]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   55.223535][ T7330] RIP: 0033:0x47c530
[   55.227421][ T7330] 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
[   55.247030][ T7330] RSP: 002b:000000c4204f57d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   55.255415][ T7330] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   55.263373][ T7330] RDX: 0000000000001000 RSI: 000000c4201be000 RDI: 0000000000000003
[   55.271319][ T7330] RBP: 000000c4204f5830 R08: 0000000000000000 R09: 0000000000000000
[   55.279271][ T7330] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000002
[   55.287229][ T7330] R13: ffffffffffffffff R14: 0000000000000002 R15: ffffffffffffffff
[   55.296460][ T7330] Kernel Offset: disabled
[   55.300786][ T7330] Rebooting in 86400 seconds..