Warning: Permanently added '10.128.0.8' (ECDSA) to the list of known hosts.
2019/10/04 12:19:39 fuzzer started
2019/10/04 12:19:40 dialing manager at 10.128.0.105:38119
2019/10/04 12:19:40 syscalls: 2523
2019/10/04 12:19:40 code coverage: enabled
2019/10/04 12:19:40 comparison tracing: enabled
2019/10/04 12:19:40 extra coverage: extra coverage is not supported by the kernel
2019/10/04 12:19:40 setuid sandbox: enabled
2019/10/04 12:19:40 namespace sandbox: enabled
2019/10/04 12:19:40 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/04 12:19:40 fault injection: enabled
2019/10/04 12:19:40 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/04 12:19:40 net packet injection: enabled
2019/10/04 12:19:40 net device setup: enabled
2019/10/04 12:19:40 concurrency sanitizer: enabled
syzkaller login: [   46.717142][ T7350] ==================================================================
[   46.725387][ T7350] BUG: KCSAN: data-race in tcp_add_backlog+0x4a0/0xcc0 and tcp_grow_window.isra.0+0x6b/0x480
[   46.735521][ T7350] 
[   46.737836][ T7350] write to 0xffff888126b5a12c of 4 bytes by interrupt on cpu 0:
[   46.745450][ T7350]  tcp_add_backlog+0x4a0/0xcc0
[   46.750192][ T7350]  tcp_v4_rcv+0x1aba/0x1bf0
[   46.754676][ T7350]  ip_protocol_deliver_rcu+0x51/0x470
[   46.760028][ T7350]  ip_local_deliver_finish+0x110/0x140
[   46.765492][ T7350]  ip_local_deliver+0x133/0x210
[   46.770419][ T7350]  ip_rcv_finish+0x121/0x160
[   46.774992][ T7350]  ip_rcv+0x18f/0x1a0
[   46.778971][ T7350]  __netif_receive_skb_one_core+0xa7/0xe0
[   46.784683][ T7350]  __netif_receive_skb+0x37/0xf0
[   46.789600][ T7350]  netif_receive_skb_internal+0x59/0x190
[   46.795213][ T7350]  napi_gro_receive+0x28f/0x330
[   46.800047][ T7350]  receive_buf+0x284/0x30b0
[   46.804536][ T7350]  virtnet_poll+0x436/0x7d0
[   46.809364][ T7350]  net_rx_action+0x3ae/0xa50
[   46.813923][ T7350] 
[   46.816240][ T7350] read to 0xffff888126b5a12c of 4 bytes by task 7350 on cpu 1:
[   46.823786][ T7350]  tcp_grow_window.isra.0+0x6b/0x480
[   46.829046][ T7350]  tcp_event_data_recv+0x68f/0x990
[   46.834133][ T7350]  tcp_rcv_established+0xbfe/0xf50
[   46.839221][ T7350]  tcp_v4_do_rcv+0x381/0x4e0
[   46.843800][ T7350]  __release_sock+0x135/0x1e0
[   46.848484][ T7350]  release_sock+0x61/0x160
[   46.852880][ T7350]  tcp_recvmsg+0x63b/0x1a30
[   46.857365][ T7350]  inet_recvmsg+0xbb/0x250
[   46.862295][ T7350]  sock_recvmsg+0x92/0xb0
[   46.866602][ T7350]  sock_read_iter+0x15f/0x1e0
[   46.871275][ T7350]  new_sync_read+0x389/0x4f0
[   46.875861][ T7350]  __vfs_read+0xb1/0xc0
[   46.880014][ T7350]  vfs_read+0x143/0x2c0
[   46.884162][ T7350] 
[   46.886491][ T7350] Reported by Kernel Concurrency Sanitizer on:
[   46.892643][ T7350] CPU: 1 PID: 7350 Comm: syz-fuzzer Not tainted 5.3.0+ #0
[   46.899747][ T7350] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   46.909793][ T7350] ==================================================================
[   46.917919][ T7350] Kernel panic - not syncing: panic_on_warn set ...
[   46.924497][ T7350] CPU: 1 PID: 7350 Comm: syz-fuzzer Not tainted 5.3.0+ #0
[   46.931592][ T7350] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   46.941622][ T7350] Call Trace:
[   46.944983][ T7350]  dump_stack+0xf5/0x159
[   46.950095][ T7350]  panic+0x209/0x639
[   46.954246][ T7350]  ? vprintk_func+0x8d/0x140
[   46.958819][ T7350]  kcsan_report.cold+0x57/0xeb
[   46.963565][ T7350]  __kcsan_setup_watchpoint+0x342/0x500
[   46.969087][ T7350]  __tsan_read4+0x2c/0x30
[   46.973457][ T7350]  tcp_grow_window.isra.0+0x6b/0x480
[   46.978814][ T7350]  tcp_event_data_recv+0x68f/0x990
[   46.983907][ T7350]  tcp_rcv_established+0xbfe/0xf50
[   46.989000][ T7350]  ? ipv4_dst_check+0xc6/0xf0
[   46.993675][ T7350]  tcp_v4_do_rcv+0x381/0x4e0
[   46.998335][ T7350]  __release_sock+0x135/0x1e0
[   47.002995][ T7350]  release_sock+0x61/0x160
[   47.007518][ T7350]  tcp_recvmsg+0x63b/0x1a30
[   47.012038][ T7350]  ? preempt_schedule_common+0x37/0x90
[   47.017505][ T7350]  inet_recvmsg+0xbb/0x250
[   47.021903][ T7350]  ? __tsan_read8+0x2c/0x30
[   47.026393][ T7350]  ? inet_sendpage+0x100/0x100
[   47.031141][ T7350]  sock_recvmsg+0x92/0xb0
[   47.035453][ T7350]  sock_read_iter+0x15f/0x1e0
[   47.040125][ T7350]  new_sync_read+0x389/0x4f0
[   47.044700][ T7350]  __vfs_read+0xb1/0xc0
[   47.048849][ T7350]  vfs_read+0x143/0x2c0
[   47.053007][ T7350]  ksys_read+0xd5/0x1b0
[   47.057162][ T7350]  __x64_sys_read+0x4c/0x60
[   47.061645][ T7350]  do_syscall_64+0xcf/0x2f0
[   47.066131][ T7350]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   47.072002][ T7350] RIP: 0033:0x47c530
[   47.075879][ T7350] 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
[   47.095461][ T7350] RSP: 002b:000000c4204dd7d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   47.103847][ T7350] RAX: ffffffffffffffda RBX: 000000c420040800 RCX: 000000000047c530
[   47.111896][ T7350] RDX: 0000000000001000 RSI: 000000c420052000 RDI: 0000000000000003
[   47.119846][ T7350] RBP: 000000c4204dd830 R08: 0000000000000000 R09: 0000000000000000
[   47.127810][ T7350] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000020
[   47.135757][ T7350] R13: ffffffffffffffff R14: 0000000000000008 R15: ffffffffffffffff
[   47.145346][ T7350] Kernel Offset: disabled
[   47.149702][ T7350] Rebooting in 86400 seconds..