Warning: Permanently added '10.128.10.17' (ECDSA) to the list of known hosts.
2019/10/21 00:12:30 fuzzer started
2019/10/21 00:12:31 dialing manager at 10.128.0.105:43535
2019/10/21 00:12:31 syscalls: 2524
2019/10/21 00:12:31 code coverage: enabled
2019/10/21 00:12:31 comparison tracing: enabled
2019/10/21 00:12:31 extra coverage: extra coverage is not supported by the kernel
2019/10/21 00:12:31 setuid sandbox: enabled
2019/10/21 00:12:31 namespace sandbox: enabled
2019/10/21 00:12:31 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/21 00:12:31 fault injection: enabled
2019/10/21 00:12:31 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/21 00:12:31 net packet injection: enabled
2019/10/21 00:12:31 net device setup: enabled
2019/10/21 00:12:31 concurrency sanitizer: enabled
syzkaller login: [   46.866772][ T7166] ==================================================================
[   46.874908][ T7166] BUG: KCSAN: data-race in tcp_add_backlog / tcp_rcv_space_adjust
[   46.882692][ T7166] 
[   46.885000][ T7166] read to 0xffff88812682130c of 4 bytes by interrupt on cpu 1:
[   46.892520][ T7166]  tcp_add_backlog+0x43/0xcc0
[   46.897237][ T7166]  tcp_v4_rcv+0x1a60/0x1bb0
[   46.901717][ T7166]  ip_protocol_deliver_rcu+0x4d/0x420
[   46.907072][ T7166]  ip_local_deliver_finish+0x110/0x140
[   46.912505][ T7166]  ip_local_deliver+0x133/0x210
[   46.917337][ T7166]  ip_rcv_finish+0x121/0x160
[   46.921901][ T7166]  ip_rcv+0x18f/0x1a0
[   46.925858][ T7166]  __netif_receive_skb_one_core+0xa7/0xe0
[   46.931551][ T7166]  __netif_receive_skb+0x37/0xf0
[   46.936466][ T7166]  netif_receive_skb_internal+0x59/0x190
[   46.942086][ T7166]  napi_gro_receive+0x28f/0x330
[   46.946912][ T7166]  receive_buf+0x284/0x30b0
[   46.951404][ T7166]  virtnet_poll+0x436/0x7d0
[   46.956748][ T7166]  net_rx_action+0x3ae/0xa90
[   46.961319][ T7166] 
[   46.963627][ T7166] write to 0xffff88812682130c of 4 bytes by task 7166 on cpu 0:
[   46.971240][ T7166]  tcp_rcv_space_adjust+0x40f/0x4c0
[   46.976417][ T7166]  tcp_recvmsg+0xdaa/0x1a30
[   46.980900][ T7166]  inet_recvmsg+0xbb/0x250
[   46.985306][ T7166]  sock_recvmsg+0x92/0xb0
[   46.989613][ T7166]  sock_read_iter+0x15f/0x1e0
[   46.994367][ T7166]  new_sync_read+0x389/0x4f0
[   46.998935][ T7166]  __vfs_read+0xb1/0xc0
[   47.003065][ T7166]  vfs_read+0x143/0x2c0
[   47.007197][ T7166]  ksys_read+0xd5/0x1b0
[   47.011340][ T7166]  __x64_sys_read+0x4c/0x60
[   47.015821][ T7166]  do_syscall_64+0xcc/0x370
[   47.020300][ T7166]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   47.026163][ T7166] 
[   47.028466][ T7166] Reported by Kernel Concurrency Sanitizer on:
[   47.034595][ T7166] CPU: 0 PID: 7166 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   47.042033][ T7166] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   47.052062][ T7166] ==================================================================
[   47.060096][ T7166] Kernel panic - not syncing: panic_on_warn set ...
[   47.066658][ T7166] CPU: 0 PID: 7166 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   47.074085][ T7166] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   47.084112][ T7166] Call Trace:
[   47.087385][ T7166]  dump_stack+0xf5/0x159
[   47.091727][ T7166]  panic+0x210/0x640
[   47.095625][ T7166]  ? ksys_read+0xd5/0x1b0
[   47.099934][ T7166]  ? vprintk_func+0x8d/0x140
[   47.104508][ T7166]  kcsan_report.cold+0xc/0x10
[   47.109227][ T7166]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   47.114766][ T7166]  __tsan_write4+0x32/0x40
[   47.119167][ T7166]  tcp_rcv_space_adjust+0x40f/0x4c0
[   47.124347][ T7166]  tcp_recvmsg+0xdaa/0x1a30
[   47.128832][ T7166]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   47.134443][ T7166]  inet_recvmsg+0xbb/0x250
[   47.138847][ T7166]  ? __tsan_read8+0x2c/0x30
[   47.143329][ T7166]  ? inet_sendpage+0x100/0x100
[   47.148082][ T7166]  sock_recvmsg+0x92/0xb0
[   47.152477][ T7166]  sock_read_iter+0x15f/0x1e0
[   47.157136][ T7166]  new_sync_read+0x389/0x4f0
[   47.161709][ T7166]  __vfs_read+0xb1/0xc0
[   47.165842][ T7166]  vfs_read+0x143/0x2c0
[   47.169975][ T7166]  ksys_read+0xd5/0x1b0
[   47.174111][ T7166]  __x64_sys_read+0x4c/0x60
[   47.178593][ T7166]  do_syscall_64+0xcc/0x370
[   47.183088][ T7166]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   47.188969][ T7166] RIP: 0033:0x47c530
[   47.192843][ T7166] 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
[   47.212431][ T7166] RSP: 002b:000000c4204fd8b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   47.220827][ T7166] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   47.228787][ T7166] RDX: 0000000000001000 RSI: 000000c4200a8000 RDI: 0000000000000003
[   47.236821][ T7166] RBP: 000000c4204fd910 R08: 0000000000000000 R09: 0000000000000000
[   47.244785][ T7166] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000180
[   47.252733][ T7166] R13: 00000000000000dd R14: 00007ffa551416c8 R15: 0000000000000008
[   47.262211][ T7166] Kernel Offset: disabled
[   47.266549][ T7166] Rebooting in 86400 seconds..