Warning: Permanently added '10.128.10.19' (ECDSA) to the list of known hosts.
2019/10/04 12:19:02 fuzzer started
2019/10/04 12:19:03 dialing manager at 10.128.0.105:38119
2019/10/04 12:19:03 syscalls: 2523
2019/10/04 12:19:03 code coverage: enabled
2019/10/04 12:19:03 comparison tracing: enabled
2019/10/04 12:19:03 extra coverage: extra coverage is not supported by the kernel
2019/10/04 12:19:03 setuid sandbox: enabled
2019/10/04 12:19:03 namespace sandbox: enabled
2019/10/04 12:19:03 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/04 12:19:03 fault injection: enabled
2019/10/04 12:19:03 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/04 12:19:03 net packet injection: enabled
2019/10/04 12:19:03 net device setup: enabled
2019/10/04 12:19:03 concurrency sanitizer: enabled
syzkaller login: [   48.816657][ T7112] ==================================================================
[   48.824927][ T7112] BUG: KCSAN: data-race in __tcp_select_window+0x6b/0x4d0 and tcp_add_backlog+0x4a0/0xcc0
[   48.834802][ T7112] 
[   48.837127][ T7112] write to 0xffff8881242312ec of 4 bytes by interrupt on cpu 1:
[   48.844738][ T7112]  tcp_add_backlog+0x4a0/0xcc0
[   48.849478][ T7112]  tcp_v4_rcv+0x1aba/0x1bf0
[   48.853971][ T7112]  ip_protocol_deliver_rcu+0x51/0x470
[   48.859370][ T7112]  ip_local_deliver_finish+0x110/0x140
[   48.864827][ T7112]  ip_local_deliver+0x133/0x210
[   48.869725][ T7112]  ip_rcv_finish+0x121/0x160
[   48.874346][ T7112]  ip_rcv+0x18f/0x1a0
[   48.878329][ T7112]  __netif_receive_skb_one_core+0xa7/0xe0
[   48.884036][ T7112]  __netif_receive_skb+0x37/0xf0
[   48.888949][ T7112]  netif_receive_skb_internal+0x59/0x190
[   48.894558][ T7112]  napi_gro_receive+0x28f/0x330
[   48.899386][ T7112]  receive_buf+0x284/0x30b0
[   48.903866][ T7112]  virtnet_poll+0x436/0x7d0
[   48.908384][ T7112]  net_rx_action+0x3ae/0xa50
[   48.912970][ T7112] 
[   48.915355][ T7112] read to 0xffff8881242312ec of 4 bytes by task 7112 on cpu 0:
[   48.923054][ T7112]  __tcp_select_window+0x6b/0x4d0
[   48.928089][ T7112]  __tcp_transmit_skb+0x679/0x1cd0
[   48.933231][ T7112]  __tcp_send_ack+0x246/0x300
[   48.938111][ T7112]  tcp_send_ack+0x34/0x40
[   48.942417][ T7112]  tcp_cleanup_rbuf+0x130/0x360
[   48.947289][ T7112]  tcp_recvmsg+0x633/0x1a30
[   48.951771][ T7112]  inet_recvmsg+0xbb/0x250
[   48.956168][ T7112]  sock_recvmsg+0x92/0xb0
[   48.960471][ T7112]  sock_read_iter+0x15f/0x1e0
[   48.965128][ T7112]  new_sync_read+0x389/0x4f0
[   48.969693][ T7112]  __vfs_read+0xb1/0xc0
[   48.973845][ T7112]  vfs_read+0x143/0x2c0
[   48.978005][ T7112]  ksys_read+0xd5/0x1b0
[   48.982138][ T7112] 
[   48.984482][ T7112] Reported by Kernel Concurrency Sanitizer on:
[   48.990616][ T7112] CPU: 0 PID: 7112 Comm: syz-fuzzer Not tainted 5.3.0+ #0
[   48.997698][ T7112] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   49.007728][ T7112] ==================================================================
[   49.015763][ T7112] Kernel panic - not syncing: panic_on_warn set ...
[   49.022340][ T7112] CPU: 0 PID: 7112 Comm: syz-fuzzer Not tainted 5.3.0+ #0
[   49.029433][ T7112] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   49.039465][ T7112] Call Trace:
[   49.042746][ T7112]  dump_stack+0xf5/0x159
[   49.046984][ T7112]  panic+0x209/0x639
[   49.050874][ T7112]  ? vprintk_func+0x8d/0x140
[   49.055456][ T7112]  kcsan_report.cold+0x57/0xeb
[   49.060200][ T7112]  __kcsan_setup_watchpoint+0x342/0x500
[   49.065722][ T7112]  __tsan_read4+0x2c/0x30
[   49.070031][ T7112]  __tcp_select_window+0x6b/0x4d0
[   49.075112][ T7112]  __tcp_transmit_skb+0x679/0x1cd0
[   49.080227][ T7112]  __tcp_send_ack+0x246/0x300
[   49.084891][ T7112]  tcp_send_ack+0x34/0x40
[   49.089201][ T7112]  tcp_cleanup_rbuf+0x130/0x360
[   49.094076][ T7112]  tcp_recvmsg+0x633/0x1a30
[   49.098605][ T7112]  inet_recvmsg+0xbb/0x250
[   49.103053][ T7112]  ? __tsan_read8+0x2c/0x30
[   49.107533][ T7112]  ? inet_sendpage+0x100/0x100
[   49.112275][ T7112]  sock_recvmsg+0x92/0xb0
[   49.116604][ T7112]  sock_read_iter+0x15f/0x1e0
[   49.121263][ T7112]  new_sync_read+0x389/0x4f0
[   49.125838][ T7112]  __vfs_read+0xb1/0xc0
[   49.129988][ T7112]  vfs_read+0x143/0x2c0
[   49.134124][ T7112]  ksys_read+0xd5/0x1b0
[   49.138276][ T7112]  __x64_sys_read+0x4c/0x60
[   49.142769][ T7112]  do_syscall_64+0xcf/0x2f0
[   49.147264][ T7112]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   49.153147][ T7112] RIP: 0033:0x47c530
[   49.157024][ T7112] 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
[   49.176617][ T7112] RSP: 002b:000000c42032d7d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   49.185003][ T7112] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   49.193069][ T7112] RDX: 0000000000001000 RSI: 000000c4202a0000 RDI: 0000000000000003
[   49.201066][ T7112] RBP: 000000c42032d830 R08: 0000000000000000 R09: 0000000000000000
[   49.209013][ T7112] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000007
[   49.216958][ T7112] R13: 000000c42007e140 R14: 0000000000000004 R15: ffffffffffffffff
[   49.226213][ T7112] Kernel Offset: disabled
[   49.230530][ T7112] Rebooting in 86400 seconds..