Warning: Permanently added '10.128.0.14' (ECDSA) to the list of known hosts.
2019/10/22 13:47:17 fuzzer started
2019/10/22 13:47:19 dialing manager at 10.128.0.105:37053
2019/10/22 13:47:19 syscalls: 2524
2019/10/22 13:47:19 code coverage: enabled
2019/10/22 13:47:19 comparison tracing: enabled
2019/10/22 13:47:19 extra coverage: extra coverage is not supported by the kernel
2019/10/22 13:47:19 setuid sandbox: enabled
2019/10/22 13:47:19 namespace sandbox: enabled
2019/10/22 13:47:19 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/22 13:47:19 fault injection: enabled
2019/10/22 13:47:19 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/22 13:47:19 net packet injection: enabled
2019/10/22 13:47:19 net device setup: enabled
2019/10/22 13:47:19 concurrency sanitizer: enabled
syzkaller login: [   55.842176][ T7296] ==================================================================
[   55.851980][ T7296] BUG: KCSAN: data-race in __tcp_select_window / tcp_add_backlog
[   55.859872][ T7296] 
[   55.862193][ T7296] write to 0xffff8881242812ec of 4 bytes by interrupt on cpu 1:
[   55.870079][ T7296]  tcp_add_backlog+0x4a0/0xcc0
[   55.875136][ T7296]  tcp_v4_rcv+0x1a60/0x1bb0
[   55.879883][ T7296]  ip_protocol_deliver_rcu+0x4d/0x420
[   55.885344][ T7296]  ip_local_deliver_finish+0x110/0x140
[   55.890949][ T7296]  ip_local_deliver+0x133/0x210
[   55.895887][ T7296]  ip_rcv_finish+0x121/0x160
[   55.900832][ T7296]  ip_rcv+0x18f/0x1a0
[   55.905276][ T7296]  __netif_receive_skb_one_core+0xa7/0xe0
[   55.911100][ T7296]  __netif_receive_skb+0x37/0xf0
[   55.917236][ T7296]  netif_receive_skb_internal+0x59/0x190
[   55.924082][ T7296]  napi_gro_receive+0x28f/0x330
[   55.929840][ T7296]  receive_buf+0x284/0x30b0
[   55.934529][ T7296]  virtnet_poll+0x436/0x7d0
[   55.939771][ T7296]  net_rx_action+0x3ae/0xa90
[   55.944715][ T7296] 
[   55.947052][ T7296] read to 0xffff8881242812ec of 4 bytes by task 7296 on cpu 0:
[   55.954978][ T7296]  __tcp_select_window+0x6b/0x4d0
[   55.960274][ T7296]  __tcp_ack_snd_check+0x117/0x4f0
[   55.965961][ T7296]  tcp_rcv_established+0xce9/0xf50
[   55.971181][ T7296]  tcp_v4_do_rcv+0x381/0x4e0
[   55.976045][ T7296]  __release_sock+0x135/0x1e0
[   55.981233][ T7296]  release_sock+0x61/0x160
[   55.985913][ T7296]  tcp_recvmsg+0x63b/0x1a30
[   55.991469][ T7296]  inet_recvmsg+0xbb/0x250
[   55.996006][ T7296]  sock_recvmsg+0x92/0xb0
[   56.000428][ T7296]  sock_read_iter+0x15f/0x1e0
[   56.005094][ T7296]  new_sync_read+0x389/0x4f0
[   56.009711][ T7296]  __vfs_read+0xb1/0xc0
[   56.013945][ T7296]  vfs_read+0x143/0x2c0
[   56.018373][ T7296] 
[   56.020726][ T7296] Reported by Kernel Concurrency Sanitizer on:
[   56.026916][ T7296] CPU: 0 PID: 7296 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   56.034654][ T7296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   56.044961][ T7296] ==================================================================
[   56.053329][ T7296] Kernel panic - not syncing: panic_on_warn set ...
[   56.060604][ T7296] CPU: 0 PID: 7296 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   56.068044][ T7296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   56.078087][ T7296] Call Trace:
[   56.081373][ T7296]  dump_stack+0xf5/0x159
[   56.085792][ T7296]  panic+0x210/0x640
[   56.089735][ T7296]  ? sock_recvmsg+0x92/0xb0
[   56.094379][ T7296]  ? vprintk_func+0x8d/0x140
[   56.099013][ T7296]  kcsan_report.cold+0xc/0x10
[   56.104340][ T7296]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   56.110000][ T7296]  __tsan_read4+0x2c/0x30
[   56.114539][ T7296]  __tcp_select_window+0x6b/0x4d0
[   56.120567][ T7296]  __tcp_ack_snd_check+0x117/0x4f0
[   56.127876][ T7296]  tcp_rcv_established+0xce9/0xf50
[   56.133393][ T7296]  ? ipv4_dst_check+0xc6/0xf0
[   56.138608][ T7296]  tcp_v4_do_rcv+0x381/0x4e0
[   56.143710][ T7296]  __release_sock+0x135/0x1e0
[   56.148769][ T7296]  release_sock+0x61/0x160
[   56.154140][ T7296]  tcp_recvmsg+0x63b/0x1a30
[   56.159853][ T7296]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   56.166529][ T7296]  inet_recvmsg+0xbb/0x250
[   56.171455][ T7296]  ? __tsan_read8+0x2c/0x30
[   56.176874][ T7296]  ? inet_sendpage+0x100/0x100
[   56.181736][ T7296]  sock_recvmsg+0x92/0xb0
[   56.186106][ T7296]  sock_read_iter+0x15f/0x1e0
[   56.190911][ T7296]  new_sync_read+0x389/0x4f0
[   56.195889][ T7296]  __vfs_read+0xb1/0xc0
[   56.200361][ T7296]  vfs_read+0x143/0x2c0
[   56.205213][ T7296]  ksys_read+0xd5/0x1b0
[   56.210932][ T7296]  __x64_sys_read+0x4c/0x60
[   56.216234][ T7296]  do_syscall_64+0xcc/0x370
[   56.221841][ T7296]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   56.228133][ T7296] RIP: 0033:0x47c530
[   56.232041][ T7296] 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
[   56.252696][ T7296] RSP: 002b:000000c4203bd7d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   56.261822][ T7296] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   56.271118][ T7296] RDX: 0000000000001000 RSI: 000000c4201ae000 RDI: 0000000000000003
[   56.279168][ T7296] RBP: 000000c4203bd830 R08: 0000000000000000 R09: 0000000000000000
[   56.287380][ T7296] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000004
[   56.295345][ T7296] R13: ffffffffffffffff R14: 0000000000000002 R15: ffffffffffffffff
[   56.305150][ T7296] Kernel Offset: disabled
[   56.309931][ T7296] Rebooting in 86400 seconds..