Warning: Permanently added '10.128.0.213' (ECDSA) to the list of known hosts.
2019/10/08 03:15:34 fuzzer started
2019/10/08 03:15:35 dialing manager at 10.128.0.105:39369
2019/10/08 03:15:35 syscalls: 2523
2019/10/08 03:15:35 code coverage: enabled
2019/10/08 03:15:35 comparison tracing: enabled
2019/10/08 03:15:35 extra coverage: extra coverage is not supported by the kernel
2019/10/08 03:15:35 setuid sandbox: enabled
2019/10/08 03:15:35 namespace sandbox: enabled
2019/10/08 03:15:35 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/08 03:15:35 fault injection: enabled
2019/10/08 03:15:35 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/08 03:15:35 net packet injection: enabled
2019/10/08 03:15:35 net device setup: enabled
2019/10/08 03:15:35 concurrency sanitizer: enabled
syzkaller login: [   45.642196][ T7243] ==================================================================
[   45.650490][ T7243] BUG: KCSAN: data-race in tcp_add_backlog / tcp_try_rmem_schedule
[   45.658365][ T7243] 
[   45.660687][ T7243] read to 0xffff888123242a0c of 4 bytes by interrupt on cpu 1:
[   45.668208][ T7243]  tcp_add_backlog+0x43/0xcc0
[   45.672861][ T7243]  tcp_v4_rcv+0x1aba/0x1bf0
[   45.677342][ T7243]  ip_protocol_deliver_rcu+0x51/0x470
[   45.682690][ T7243]  ip_local_deliver_finish+0x110/0x140
[   45.688124][ T7243]  ip_local_deliver+0x133/0x210
[   45.692958][ T7243]  ip_rcv_finish+0x121/0x160
[   45.697541][ T7243]  ip_rcv+0x18f/0x1a0
[   45.701504][ T7243]  __netif_receive_skb_one_core+0xa7/0xe0
[   45.707213][ T7243]  __netif_receive_skb+0x37/0xf0
[   45.712138][ T7243]  netif_receive_skb_internal+0x59/0x190
[   45.717758][ T7243]  napi_gro_receive+0x28f/0x330
[   45.722594][ T7243]  receive_buf+0x284/0x30b0
[   45.727075][ T7243]  virtnet_poll+0x436/0x7d0
[   45.731570][ T7243]  net_rx_action+0x3ae/0xa50
[   45.736128][ T7243] 
[   45.738440][ T7243] write to 0xffff888123242a0c of 4 bytes by task 7243 on cpu 0:
[   45.746049][ T7243]  tcp_try_rmem_schedule+0x294/0xb90
[   45.751314][ T7243]  tcp_data_queue+0x7ba/0x2000
[   45.756053][ T7243]  tcp_rcv_established+0x517/0xf50
[   45.761157][ T7243]  tcp_v4_do_rcv+0x381/0x4e0
[   45.765725][ T7243]  __release_sock+0x135/0x1e0
[   45.770388][ T7243]  release_sock+0x61/0x160
[   45.774780][ T7243]  tcp_recvmsg+0x63b/0x1a30
[   45.779263][ T7243]  inet_recvmsg+0xbb/0x250
[   45.783661][ T7243]  sock_recvmsg+0x92/0xb0
[   45.787972][ T7243]  sock_read_iter+0x15f/0x1e0
[   45.792627][ T7243]  new_sync_read+0x389/0x4f0
[   45.797210][ T7243]  __vfs_read+0xb1/0xc0
[   45.801341][ T7243]  vfs_read+0x143/0x2c0
[   45.805465][ T7243] 
[   45.807765][ T7243] Reported by Kernel Concurrency Sanitizer on:
[   45.813895][ T7243] CPU: 0 PID: 7243 Comm: syz-fuzzer Not tainted 5.3.0+ #0
[   45.820982][ T7243] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   45.831013][ T7243] ==================================================================
[   45.839049][ T7243] Kernel panic - not syncing: panic_on_warn set ...
[   45.845612][ T7243] CPU: 0 PID: 7243 Comm: syz-fuzzer Not tainted 5.3.0+ #0
[   45.853039][ T7243] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   45.863077][ T7243] Call Trace:
[   45.866361][ T7243]  dump_stack+0xf5/0x159
[   45.870586][ T7243]  panic+0x209/0x639
[   45.874460][ T7243]  ? vprintk_func+0x8d/0x140
[   45.879030][ T7243]  kcsan_report.cold+0x57/0xeb
[   45.883772][ T7243]  __kcsan_setup_watchpoint+0x342/0x500
[   45.889396][ T7243]  __tsan_write4+0x32/0x40
[   45.893792][ T7243]  tcp_try_rmem_schedule+0x294/0xb90
[   45.899058][ T7243]  tcp_data_queue+0x7ba/0x2000
[   45.903804][ T7243]  ? tcp_urg+0xa1/0x5c0
[   45.907940][ T7243]  tcp_rcv_established+0x517/0xf50
[   45.913119][ T7243]  ? ipv4_dst_check+0xc6/0xf0
[   45.917774][ T7243]  tcp_v4_do_rcv+0x381/0x4e0
[   45.922344][ T7243]  __release_sock+0x135/0x1e0
[   45.927011][ T7243]  release_sock+0x61/0x160
[   45.931408][ T7243]  tcp_recvmsg+0x63b/0x1a30
[   45.935898][ T7243]  inet_recvmsg+0xbb/0x250
[   45.940291][ T7243]  ? __tsan_read8+0x2c/0x30
[   45.944860][ T7243]  ? inet_sendpage+0x100/0x100
[   45.949706][ T7243]  sock_recvmsg+0x92/0xb0
[   45.954015][ T7243]  sock_read_iter+0x15f/0x1e0
[   45.958675][ T7243]  new_sync_read+0x389/0x4f0
[   45.963249][ T7243]  __vfs_read+0xb1/0xc0
[   45.967387][ T7243]  vfs_read+0x143/0x2c0
[   45.971527][ T7243]  ksys_read+0xd5/0x1b0
[   45.975660][ T7243]  __x64_sys_read+0x4c/0x60
[   45.980148][ T7243]  do_syscall_64+0xcf/0x2f0
[   45.984635][ T7243]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   45.990506][ T7243] RIP: 0033:0x47c530
[   45.994382][ T7243] 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
[   46.013962][ T7243] RSP: 002b:000000c4203b7810 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
[   46.022349][ T7243] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   46.030297][ T7243] RDX: 0000000000001000 RSI: 000000c4203e0000 RDI: 0000000000000003
[   46.038595][ T7243] RBP: 000000c4203b7868 R08: 0000000000000000 R09: 0000000000000000
[   46.046545][ T7243] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000080
[   46.054582][ T7243] R13: ffffffffffffffff R14: 0000000000000002 R15: ffffffffffffffff
[   46.063942][ T7243] Kernel Offset: disabled
[   46.068269][ T7243] Rebooting in 86400 seconds..