Warning: Permanently added '10.128.0.155' (ECDSA) to the list of known hosts.
2019/11/02 21:05:48 fuzzer started
2019/11/02 21:05:50 dialing manager at 10.128.0.105:46001
2019/11/02 21:05:50 syscalls: 2554
2019/11/02 21:05:50 code coverage: enabled
2019/11/02 21:05:50 comparison tracing: enabled
2019/11/02 21:05:50 extra coverage: extra coverage is not supported by the kernel
2019/11/02 21:05:50 setuid sandbox: enabled
2019/11/02 21:05:50 namespace sandbox: enabled
2019/11/02 21:05:50 Android sandbox: /sys/fs/selinux/policy does not exist
2019/11/02 21:05:50 fault injection: enabled
2019/11/02 21:05:50 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/11/02 21:05:50 net packet injection: enabled
2019/11/02 21:05:50 net device setup: enabled
2019/11/02 21:05:50 concurrency sanitizer: enabled
2019/11/02 21:05:52 adding functions to KCSAN blacklist: '__nf_conntrack_find_get' 'find_next_bit' 'vm_area_dup' 'task_dump_owner' 'pcpu_alloc' '__hrtimer_run_queues' 'rcu_gp_fqs_check_wake' '__tcp_select_window' 
syzkaller login: [   48.703655][ T7215] ==================================================================
[   48.711830][ T7215] BUG: KCSAN: data-race in tcp_add_backlog / tcp_recvmsg
[   48.719129][ T7215] 
[   48.721440][ T7215] write to 0xffff88812a9789f8 of 8 bytes by interrupt on cpu 0:
[   48.729064][ T7215]  tcp_add_backlog+0x45a/0xcc0
[   48.733804][ T7215]  tcp_v4_rcv+0x1a60/0x1bb0
[   48.738284][ T7215]  ip_protocol_deliver_rcu+0x4d/0x420
[   48.743628][ T7215]  ip_local_deliver_finish+0x110/0x140
[   48.749071][ T7215]  ip_local_deliver+0x133/0x210
[   48.753915][ T7215]  ip_rcv_finish+0x121/0x160
[   48.758511][ T7215]  ip_rcv+0x18f/0x1a0
[   48.763165][ T7215]  __netif_receive_skb_one_core+0xa7/0xe0
[   48.768924][ T7215]  __netif_receive_skb+0x37/0xf0
[   48.773858][ T7215]  netif_receive_skb_internal+0x59/0x190
[   48.779483][ T7215]  napi_gro_receive+0x28f/0x330
[   48.784497][ T7215]  receive_buf+0x284/0x30b0
[   48.788977][ T7215]  virtnet_poll+0x436/0x7d0
[   48.793541][ T7215]  net_rx_action+0x3ae/0xa90
[   48.798103][ T7215] 
[   48.800412][ T7215] read to 0xffff88812a9789f8 of 8 bytes by task 7215 on cpu 1:
[   48.807932][ T7215]  tcp_recvmsg+0x470/0x1a30
[   48.812412][ T7215]  inet_recvmsg+0xbb/0x250
[   48.816807][ T7215]  sock_recvmsg+0x92/0xb0
[   48.821112][ T7215]  sock_read_iter+0x15f/0x1e0
[   48.825765][ T7215]  new_sync_read+0x389/0x4f0
[   48.830328][ T7215]  __vfs_read+0xb1/0xc0
[   48.834456][ T7215]  vfs_read+0x143/0x2c0
[   48.838600][ T7215]  ksys_read+0xd5/0x1b0
[   48.842732][ T7215]  __x64_sys_read+0x4c/0x60
[   48.847232][ T7215]  do_syscall_64+0xcc/0x370
[   48.851730][ T7215]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   48.857607][ T7215] 
[   48.859934][ T7215] Reported by Kernel Concurrency Sanitizer on:
[   48.866073][ T7215] CPU: 1 PID: 7215 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   48.873506][ T7215] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   48.883566][ T7215] ==================================================================
[   48.891602][ T7215] Kernel panic - not syncing: panic_on_warn set ...
[   48.898168][ T7215] CPU: 1 PID: 7215 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   48.905604][ T7215] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   48.916053][ T7215] Call Trace:
[   48.919363][ T7215]  dump_stack+0xf5/0x159
[   48.923587][ T7215]  panic+0x210/0x640
[   48.927480][ T7215]  ? __x64_sys_read+0x4c/0x60
[   48.932149][ T7215]  ? vprintk_func+0x8d/0x140
[   48.936728][ T7215]  kcsan_report.cold+0xc/0x10
[   48.941387][ T7215]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   48.946920][ T7215]  __tsan_read8+0x2c/0x30
[   48.951230][ T7215]  tcp_recvmsg+0x470/0x1a30
[   48.955720][ T7215]  inet_recvmsg+0xbb/0x250
[   48.960159][ T7215]  ? __tsan_read8+0x2c/0x30
[   48.964650][ T7215]  ? inet_sendpage+0x100/0x100
[   48.969477][ T7215]  sock_recvmsg+0x92/0xb0
[   48.973808][ T7215]  sock_read_iter+0x15f/0x1e0
[   48.978478][ T7215]  new_sync_read+0x389/0x4f0
[   48.983049][ T7215]  __vfs_read+0xb1/0xc0
[   48.987183][ T7215]  vfs_read+0x143/0x2c0
[   48.991316][ T7215]  ksys_read+0xd5/0x1b0
[   48.995452][ T7215]  __x64_sys_read+0x4c/0x60
[   48.999950][ T7215]  do_syscall_64+0xcc/0x370
[   49.004617][ T7215]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   49.010494][ T7215] RIP: 0033:0x47c530
[   49.014388][ T7215] 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
[   49.033978][ T7215] RSP: 002b:000000c4204ef7d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
[   49.042374][ T7215] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   49.050467][ T7215] RDX: 0000000000001000 RSI: 000000c4204a8000 RDI: 0000000000000003
[   49.058419][ T7215] RBP: 000000c4204ef828 R08: 0000000000000000 R09: 0000000000000000
[   49.066371][ T7215] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000010
[   49.074945][ T7215] R13: ffffffffffffffff R14: 0000000000000008 R15: ffffffffffffffff
[   49.084321][ T7215] Kernel Offset: disabled
[   49.088664][ T7215] Rebooting in 86400 seconds..