Warning: Permanently added '10.128.0.3' (ECDSA) to the list of known hosts.
2019/10/23 01:15:33 fuzzer started
2019/10/23 01:15:35 dialing manager at 10.128.0.105:33369
2019/10/23 01:15:35 syscalls: 2524
2019/10/23 01:15:35 code coverage: enabled
2019/10/23 01:15:35 comparison tracing: enabled
2019/10/23 01:15:35 extra coverage: extra coverage is not supported by the kernel
2019/10/23 01:15:35 setuid sandbox: enabled
2019/10/23 01:15:35 namespace sandbox: enabled
2019/10/23 01:15:35 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/23 01:15:35 fault injection: enabled
2019/10/23 01:15:35 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/23 01:15:35 net packet injection: enabled
2019/10/23 01:15:35 net device setup: enabled
2019/10/23 01:15:35 concurrency sanitizer: enabled
syzkaller login: [   47.022500][ T7225] ==================================================================
[   47.031056][ T7225] BUG: KCSAN: data-race in tcp_add_backlog / tcp_grow_window.isra.0
[   47.039141][ T7225] 
[   47.041454][ T7225] write to 0xffff88812348a16c of 4 bytes by interrupt on cpu 0:
[   47.049079][ T7225]  tcp_add_backlog+0x4a0/0xcc0
[   47.053823][ T7225]  tcp_v4_rcv+0x1a60/0x1bb0
[   47.058323][ T7225]  ip_protocol_deliver_rcu+0x4d/0x420
[   47.063687][ T7225]  ip_local_deliver_finish+0x110/0x140
[   47.069132][ T7225]  ip_local_deliver+0x133/0x210
[   47.073956][ T7225]  ip_rcv_finish+0x121/0x160
[   47.078532][ T7225]  ip_rcv+0x18f/0x1a0
[   47.082490][ T7225]  __netif_receive_skb_one_core+0xa7/0xe0
[   47.088188][ T7225]  __netif_receive_skb+0x37/0xf0
[   47.093105][ T7225]  netif_receive_skb_internal+0x59/0x190
[   47.098730][ T7225]  napi_gro_receive+0x28f/0x330
[   47.103555][ T7225]  receive_buf+0x284/0x30b0
[   47.108143][ T7225]  virtnet_poll+0x436/0x7d0
[   47.112667][ T7225]  net_rx_action+0x3ae/0xa90
[   47.117232][ T7225] 
[   47.119562][ T7225] read to 0xffff88812348a16c of 4 bytes by task 7225 on cpu 1:
[   47.127186][ T7225]  tcp_grow_window.isra.0+0x6b/0x480
[   47.132451][ T7225]  tcp_event_data_recv+0x68f/0x990
[   47.137538][ T7225]  tcp_rcv_established+0xbfe/0xf50
[   47.142627][ T7225]  tcp_v4_do_rcv+0x381/0x4e0
[   47.147196][ T7225]  __release_sock+0x135/0x1e0
[   47.151846][ T7225]  release_sock+0x61/0x160
[   47.156236][ T7225]  tcp_recvmsg+0x63b/0x1a30
[   47.160720][ T7225]  inet_recvmsg+0xbb/0x250
[   47.165114][ T7225]  sock_recvmsg+0x92/0xb0
[   47.169437][ T7225]  sock_read_iter+0x15f/0x1e0
[   47.174105][ T7225]  new_sync_read+0x389/0x4f0
[   47.178667][ T7225]  __vfs_read+0xb1/0xc0
[   47.182805][ T7225]  vfs_read+0x143/0x2c0
[   47.186934][ T7225] 
[   47.189244][ T7225] Reported by Kernel Concurrency Sanitizer on:
[   47.195516][ T7225] CPU: 1 PID: 7225 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   47.202960][ T7225] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   47.212994][ T7225] ==================================================================
[   47.221030][ T7225] Kernel panic - not syncing: panic_on_warn set ...
[   47.227605][ T7225] CPU: 1 PID: 7225 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   47.235204][ T7225] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   47.245503][ T7225] Call Trace:
[   47.248777][ T7225]  dump_stack+0xf5/0x159
[   47.253006][ T7225]  panic+0x210/0x640
[   47.256891][ T7225]  ? sock_recvmsg+0x92/0xb0
[   47.261372][ T7225]  ? vprintk_func+0x8d/0x140
[   47.265941][ T7225]  kcsan_report.cold+0xc/0x10
[   47.270597][ T7225]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   47.276135][ T7225]  __tsan_read4+0x2c/0x30
[   47.280453][ T7225]  tcp_grow_window.isra.0+0x6b/0x480
[   47.285715][ T7225]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   47.291336][ T7225]  tcp_event_data_recv+0x68f/0x990
[   47.296427][ T7225]  tcp_rcv_established+0xbfe/0xf50
[   47.301527][ T7225]  ? ipv4_dst_check+0xc6/0xf0
[   47.306197][ T7225]  tcp_v4_do_rcv+0x381/0x4e0
[   47.310768][ T7225]  __release_sock+0x135/0x1e0
[   47.315422][ T7225]  release_sock+0x61/0x160
[   47.319818][ T7225]  tcp_recvmsg+0x63b/0x1a30
[   47.324307][ T7225]  inet_recvmsg+0xbb/0x250
[   47.328725][ T7225]  ? __tsan_read8+0x2c/0x30
[   47.334342][ T7225]  ? inet_sendpage+0x100/0x100
[   47.339084][ T7225]  sock_recvmsg+0x92/0xb0
[   47.343413][ T7225]  sock_read_iter+0x15f/0x1e0
[   47.348092][ T7225]  new_sync_read+0x389/0x4f0
[   47.352662][ T7225]  __vfs_read+0xb1/0xc0
[   47.356793][ T7225]  vfs_read+0x143/0x2c0
[   47.361018][ T7225]  ksys_read+0xd5/0x1b0
[   47.365318][ T7225]  __x64_sys_read+0x4c/0x60
[   47.369820][ T7225]  do_syscall_64+0xcc/0x370
[   47.374310][ T7225]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   47.380179][ T7225] RIP: 0033:0x47c530
[   47.384055][ T7225] 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
[   47.403641][ T7225] RSP: 002b:000000c42031f7d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   47.412037][ T7225] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   47.419996][ T7225] RDX: 0000000000001000 RSI: 000000c420134000 RDI: 0000000000000003
[   47.427944][ T7225] RBP: 000000c42031f830 R08: 0000000000000000 R09: 0000000000000000
[   47.435901][ T7225] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000002
[   47.443849][ T7225] R13: ffffffffffffffff R14: 0000000000000004 R15: ffffffffffffffff
[   47.453129][ T7225] Kernel Offset: disabled
[   47.457451][ T7225] Rebooting in 86400 seconds..