Warning: Permanently added '10.128.0.167' (ECDSA) to the list of known hosts.
2019/11/03 21:29:22 fuzzer started
2019/11/03 21:29:24 dialing manager at 10.128.0.105:42255
2019/11/03 21:29:24 syscalls: 2553
2019/11/03 21:29:24 code coverage: enabled
2019/11/03 21:29:24 comparison tracing: enabled
2019/11/03 21:29:24 extra coverage: extra coverage is not supported by the kernel
2019/11/03 21:29:24 setuid sandbox: enabled
2019/11/03 21:29:24 namespace sandbox: enabled
2019/11/03 21:29:24 Android sandbox: /sys/fs/selinux/policy does not exist
2019/11/03 21:29:24 fault injection: enabled
2019/11/03 21:29:24 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/11/03 21:29:24 net packet injection: enabled
2019/11/03 21:29:24 net device setup: enabled
2019/11/03 21:29:24 concurrency sanitizer: enabled
2019/11/03 21:29:24 devlink PCI setup: PCI device 0000:00:10.0 is not available
2019/11/03 21:29:25 adding functions to KCSAN blacklist: 'get_wchan' 'pid_update_inode' 'generic_permission' 'ktime_get_real_seconds' '__tcp_select_window' 'tomoyo_supervisor' '__hrtimer_run_queues' 
syzkaller login: [   57.902346][ T7305] ==================================================================
[   57.910474][ T7305] BUG: KCSAN: data-race in tcp_add_backlog / tcp_recvmsg
[   57.917476][ T7305] 
[   57.919784][ T7305] write to 0xffff88811e8472f8 of 8 bytes by interrupt on cpu 1:
[   57.927489][ T7305]  tcp_add_backlog+0x45a/0xcc0
[   57.932229][ T7305]  tcp_v4_rcv+0x1a60/0x1bb0
[   57.936707][ T7305]  ip_protocol_deliver_rcu+0x4d/0x420
[   57.942093][ T7305]  ip_local_deliver_finish+0x110/0x140
[   57.947525][ T7305]  ip_local_deliver+0x133/0x210
[   57.952405][ T7305]  ip_rcv_finish+0x121/0x160
[   57.956968][ T7305]  ip_rcv+0x18f/0x1a0
[   57.960931][ T7305]  __netif_receive_skb_one_core+0xa7/0xe0
[   57.966624][ T7305]  __netif_receive_skb+0x37/0xf0
[   57.971538][ T7305]  netif_receive_skb_internal+0x59/0x190
[   57.977154][ T7305]  napi_gro_receive+0x28f/0x330
[   57.982043][ T7305]  receive_buf+0x284/0x30b0
[   57.986524][ T7305]  virtnet_poll+0x436/0x7d0
[   57.991004][ T7305]  net_rx_action+0x3ae/0xa90
[   57.995617][ T7305] 
[   57.997923][ T7305] read to 0xffff88811e8472f8 of 8 bytes by task 7305 on cpu 0:
[   58.005440][ T7305]  tcp_recvmsg+0x470/0x1a30
[   58.009918][ T7305]  inet_recvmsg+0xbb/0x250
[   58.014310][ T7305]  sock_recvmsg+0x92/0xb0
[   58.018615][ T7305]  sock_read_iter+0x15f/0x1e0
[   58.023629][ T7305]  new_sync_read+0x389/0x4f0
[   58.028194][ T7305]  __vfs_read+0xb1/0xc0
[   58.032324][ T7305]  vfs_read+0x143/0x2c0
[   58.036470][ T7305]  ksys_read+0xd5/0x1b0
[   58.040613][ T7305]  __x64_sys_read+0x4c/0x60
[   58.045093][ T7305]  do_syscall_64+0xcc/0x370
[   58.049615][ T7305]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   58.055480][ T7305] 
[   58.057781][ T7305] Reported by Kernel Concurrency Sanitizer on:
[   58.063911][ T7305] CPU: 0 PID: 7305 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   58.071359][ T7305] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   58.081479][ T7305] ==================================================================
[   58.089513][ T7305] Kernel panic - not syncing: panic_on_warn set ...
[   58.096075][ T7305] CPU: 0 PID: 7305 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   58.103502][ T7305] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   58.113534][ T7305] Call Trace:
[   58.116806][ T7305]  dump_stack+0xf5/0x159
[   58.121043][ T7305]  panic+0x210/0x640
[   58.124925][ T7305]  ? __x64_sys_read+0x4c/0x60
[   58.129596][ T7305]  ? vprintk_func+0x8d/0x140
[   58.134182][ T7305]  kcsan_report.cold+0xc/0x10
[   58.138838][ T7305]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   58.144359][ T7305]  __tsan_read8+0x2c/0x30
[   58.148686][ T7305]  tcp_recvmsg+0x470/0x1a30
[   58.153175][ T7305]  inet_recvmsg+0xbb/0x250
[   58.157583][ T7305]  ? __tsan_read8+0x2c/0x30
[   58.162062][ T7305]  ? inet_sendpage+0x100/0x100
[   58.166811][ T7305]  sock_recvmsg+0x92/0xb0
[   58.171121][ T7305]  sock_read_iter+0x15f/0x1e0
[   58.175781][ T7305]  new_sync_read+0x389/0x4f0
[   58.180352][ T7305]  __vfs_read+0xb1/0xc0
[   58.184502][ T7305]  vfs_read+0x143/0x2c0
[   58.188639][ T7305]  ksys_read+0xd5/0x1b0
[   58.192777][ T7305]  __x64_sys_read+0x4c/0x60
[   58.197274][ T7305]  do_syscall_64+0xcc/0x370
[   58.202032][ T7305]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   58.207901][ T7305] RIP: 0033:0x47c530
[   58.211779][ T7305] 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
[   58.231357][ T7305] RSP: 002b:000000c4204f67d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   58.239745][ T7305] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   58.247708][ T7305] RDX: 0000000000001000 RSI: 000000c42032c000 RDI: 0000000000000003
[   58.255654][ T7305] RBP: 000000c4204f6830 R08: 0000000000000000 R09: 0000000000000000
[   58.263600][ T7305] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000004
[   58.271551][ T7305] R13: ffffffffffffffff R14: 0000000000000020 R15: ffffffffffffffff
[   58.285550][ T7305] Kernel Offset: disabled
[   58.289870][ T7305] Rebooting in 86400 seconds..