Warning: Permanently added '10.128.0.91' (ECDSA) to the list of known hosts.
2019/10/22 18:50:43 fuzzer started
2019/10/22 18:50:44 dialing manager at 10.128.0.105:33369
2019/10/22 18:50:44 syscalls: 2524
2019/10/22 18:50:44 code coverage: enabled
2019/10/22 18:50:44 comparison tracing: enabled
2019/10/22 18:50:44 extra coverage: extra coverage is not supported by the kernel
2019/10/22 18:50:44 setuid sandbox: enabled
2019/10/22 18:50:44 namespace sandbox: enabled
2019/10/22 18:50:44 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/22 18:50:44 fault injection: enabled
2019/10/22 18:50:44 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/22 18:50:44 net packet injection: enabled
2019/10/22 18:50:44 net device setup: enabled
2019/10/22 18:50:44 concurrency sanitizer: enabled
syzkaller login: [   45.938294][ T7181] ==================================================================
[   45.946427][ T7181] BUG: KCSAN: data-race in tcp_add_backlog / tcp_grow_window.isra.0
[   45.954388][ T7181] 
[   45.956719][ T7181] write to 0xffff88812252212c of 4 bytes by interrupt on cpu 0:
[   45.964325][ T7181]  tcp_add_backlog+0x4a0/0xcc0
[   45.969066][ T7181]  tcp_v4_rcv+0x1a60/0x1bb0
[   45.973567][ T7181]  ip_protocol_deliver_rcu+0x4d/0x420
[   45.978913][ T7181]  ip_local_deliver_finish+0x110/0x140
[   45.984356][ T7181]  ip_local_deliver+0x133/0x210
[   45.989180][ T7181]  ip_rcv_finish+0x121/0x160
[   45.993741][ T7181]  ip_rcv+0x18f/0x1a0
[   45.997710][ T7181]  __netif_receive_skb_one_core+0xa7/0xe0
[   46.003673][ T7181]  __netif_receive_skb+0x37/0xf0
[   46.008588][ T7181]  netif_receive_skb_internal+0x59/0x190
[   46.014198][ T7181]  napi_gro_receive+0x28f/0x330
[   46.019025][ T7181]  receive_buf+0x284/0x30b0
[   46.023513][ T7181]  virtnet_poll+0x436/0x7d0
[   46.028004][ T7181]  net_rx_action+0x3ae/0xa90
[   46.032562][ T7181] 
[   46.034880][ T7181] read to 0xffff88812252212c of 4 bytes by task 7181 on cpu 1:
[   46.042394][ T7181]  tcp_grow_window.isra.0+0x6b/0x480
[   46.047651][ T7181]  tcp_event_data_recv+0x68f/0x990
[   46.052735][ T7181]  tcp_rcv_established+0xbfe/0xf50
[   46.057820][ T7181]  tcp_v4_do_rcv+0x381/0x4e0
[   46.062397][ T7181]  __release_sock+0x135/0x1e0
[   46.067047][ T7181]  release_sock+0x61/0x160
[   46.071437][ T7181]  tcp_recvmsg+0x63b/0x1a30
[   46.075914][ T7181]  inet_recvmsg+0xbb/0x250
[   46.080307][ T7181]  sock_recvmsg+0x92/0xb0
[   46.084615][ T7181]  sock_read_iter+0x15f/0x1e0
[   46.089280][ T7181]  new_sync_read+0x389/0x4f0
[   46.093845][ T7181]  __vfs_read+0xb1/0xc0
[   46.097973][ T7181]  vfs_read+0x143/0x2c0
[   46.102094][ T7181] 
[   46.104406][ T7181] Reported by Kernel Concurrency Sanitizer on:
[   46.110534][ T7181] CPU: 1 PID: 7181 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   46.117980][ T7181] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   46.128007][ T7181] ==================================================================
[   46.136133][ T7181] Kernel panic - not syncing: panic_on_warn set ...
[   46.142705][ T7181] CPU: 1 PID: 7181 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   46.150134][ T7181] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   46.160513][ T7181] Call Trace:
[   46.163784][ T7181]  dump_stack+0xf5/0x159
[   46.168004][ T7181]  panic+0x210/0x640
[   46.171895][ T7181]  ? sock_recvmsg+0x92/0xb0
[   46.176387][ T7181]  ? vprintk_func+0x8d/0x140
[   46.180953][ T7181]  kcsan_report.cold+0xc/0x10
[   46.186741][ T7181]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   46.192278][ T7181]  __tsan_read4+0x2c/0x30
[   46.196588][ T7181]  tcp_grow_window.isra.0+0x6b/0x480
[   46.201848][ T7181]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   46.207464][ T7181]  tcp_event_data_recv+0x68f/0x990
[   46.212552][ T7181]  tcp_rcv_established+0xbfe/0xf50
[   46.217640][ T7181]  ? ipv4_dst_check+0xc6/0xf0
[   46.222313][ T7181]  tcp_v4_do_rcv+0x381/0x4e0
[   46.226883][ T7181]  __release_sock+0x135/0x1e0
[   46.231538][ T7181]  release_sock+0x61/0x160
[   46.235935][ T7181]  tcp_recvmsg+0x63b/0x1a30
[   46.240420][ T7181]  inet_recvmsg+0xbb/0x250
[   46.244816][ T7181]  ? __tsan_read8+0x2c/0x30
[   46.249303][ T7181]  ? inet_sendpage+0x100/0x100
[   46.254063][ T7181]  sock_recvmsg+0x92/0xb0
[   46.258382][ T7181]  sock_read_iter+0x15f/0x1e0
[   46.263477][ T7181]  new_sync_read+0x389/0x4f0
[   46.268070][ T7181]  __vfs_read+0xb1/0xc0
[   46.272221][ T7181]  vfs_read+0x143/0x2c0
[   46.276367][ T7181]  ksys_read+0xd5/0x1b0
[   46.280689][ T7181]  __x64_sys_read+0x4c/0x60
[   46.285523][ T7181]  do_syscall_64+0xcc/0x370
[   46.290019][ T7181]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   46.295894][ T7181] RIP: 0033:0x47c530
[   46.299768][ T7181] 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
[   46.319347][ T7181] RSP: 002b:000000c4203a7810 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
[   46.327737][ T7181] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   46.335693][ T7181] RDX: 0000000000001000 RSI: 000000c4203a4000 RDI: 0000000000000003
[   46.343823][ T7181] RBP: 000000c4203a7868 R08: 0000000000000000 R09: 0000000000000000
[   46.351771][ T7181] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000020
[   46.359728][ T7181] R13: ffffffffffffffff R14: 0000000000000010 R15: ffffffffffffffff
[   46.369224][ T7181] Kernel Offset: disabled
[   46.373546][ T7181] Rebooting in 86400 seconds..