Warning: Permanently added '10.128.10.8' (ECDSA) to the list of known hosts.
2019/10/22 20:27:42 fuzzer started
2019/10/22 20:27:43 dialing manager at 10.128.0.105:33369
2019/10/22 20:27:43 syscalls: 2524
2019/10/22 20:27:43 code coverage: enabled
2019/10/22 20:27:43 comparison tracing: enabled
2019/10/22 20:27:43 extra coverage: extra coverage is not supported by the kernel
2019/10/22 20:27:43 setuid sandbox: enabled
2019/10/22 20:27:43 namespace sandbox: enabled
2019/10/22 20:27:43 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/22 20:27:43 fault injection: enabled
2019/10/22 20:27:43 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/22 20:27:43 net packet injection: enabled
2019/10/22 20:27:43 net device setup: enabled
2019/10/22 20:27:43 concurrency sanitizer: enabled
syzkaller login: [   45.180449][ T7175] ==================================================================
[   45.188715][ T7175] BUG: KCSAN: data-race in tcp_add_backlog / tcp_grow_window.isra.0
[   45.196822][ T7175] 
[   45.199179][ T7175] write to 0xffff8881266c09ec of 4 bytes by interrupt on cpu 1:
[   45.206794][ T7175]  tcp_add_backlog+0x4a0/0xcc0
[   45.211660][ T7175]  tcp_v4_rcv+0x1a60/0x1bb0
[   45.216152][ T7175]  ip_protocol_deliver_rcu+0x4d/0x420
[   45.221509][ T7175]  ip_local_deliver_finish+0x110/0x140
[   45.226952][ T7175]  ip_local_deliver+0x133/0x210
[   45.231777][ T7175]  ip_rcv_finish+0x121/0x160
[   45.236481][ T7175]  ip_rcv+0x18f/0x1a0
[   45.240616][ T7175]  __netif_receive_skb_one_core+0xa7/0xe0
[   45.246310][ T7175]  __netif_receive_skb+0x37/0xf0
[   45.251262][ T7175]  netif_receive_skb_internal+0x59/0x190
[   45.256886][ T7175]  napi_gro_receive+0x28f/0x330
[   45.261775][ T7175]  receive_buf+0x284/0x30b0
[   45.266255][ T7175]  virtnet_poll+0x436/0x7d0
[   45.270739][ T7175]  net_rx_action+0x3ae/0xa90
[   45.275301][ T7175] 
[   45.277613][ T7175] read to 0xffff8881266c09ec of 4 bytes by task 7175 on cpu 0:
[   45.285150][ T7175]  tcp_grow_window.isra.0+0x6b/0x480
[   45.290424][ T7175]  tcp_event_data_recv+0x68f/0x990
[   45.295523][ T7175]  tcp_rcv_established+0xbfe/0xf50
[   45.300609][ T7175]  tcp_v4_do_rcv+0x381/0x4e0
[   45.305260][ T7175]  __release_sock+0x135/0x1e0
[   45.309926][ T7175]  release_sock+0x61/0x160
[   45.314322][ T7175]  tcp_recvmsg+0x63b/0x1a30
[   45.318806][ T7175]  inet_recvmsg+0xbb/0x250
[   45.323200][ T7175]  sock_recvmsg+0x92/0xb0
[   45.327508][ T7175]  sock_read_iter+0x15f/0x1e0
[   45.332249][ T7175]  new_sync_read+0x389/0x4f0
[   45.336829][ T7175]  __vfs_read+0xb1/0xc0
[   45.340960][ T7175]  vfs_read+0x143/0x2c0
[   45.345084][ T7175] 
[   45.347390][ T7175] Reported by Kernel Concurrency Sanitizer on:
[   45.353620][ T7175] CPU: 0 PID: 7175 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   45.361045][ T7175] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   45.371100][ T7175] ==================================================================
[   45.379154][ T7175] Kernel panic - not syncing: panic_on_warn set ...
[   45.385852][ T7175] CPU: 0 PID: 7175 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   45.393289][ T7175] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   45.403423][ T7175] Call Trace:
[   45.406698][ T7175]  dump_stack+0xf5/0x159
[   45.410921][ T7175]  panic+0x210/0x640
[   45.415853][ T7175]  ? sock_recvmsg+0x92/0xb0
[   45.420333][ T7175]  ? vprintk_func+0x8d/0x140
[   45.424900][ T7175]  kcsan_report.cold+0xc/0x10
[   45.429557][ T7175]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   45.435090][ T7175]  __tsan_read4+0x2c/0x30
[   45.439399][ T7175]  tcp_grow_window.isra.0+0x6b/0x480
[   45.444660][ T7175]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   45.450286][ T7175]  tcp_event_data_recv+0x68f/0x990
[   45.455420][ T7175]  tcp_rcv_established+0xbfe/0xf50
[   45.460523][ T7175]  ? ipv4_dst_check+0xc6/0xf0
[   45.465271][ T7175]  tcp_v4_do_rcv+0x381/0x4e0
[   45.469847][ T7175]  __release_sock+0x135/0x1e0
[   45.474506][ T7175]  release_sock+0x61/0x160
[   45.478958][ T7175]  tcp_recvmsg+0x63b/0x1a30
[   45.483457][ T7175]  inet_recvmsg+0xbb/0x250
[   45.487861][ T7175]  ? __tsan_read8+0x2c/0x30
[   45.492362][ T7175]  ? inet_sendpage+0x100/0x100
[   45.497112][ T7175]  sock_recvmsg+0x92/0xb0
[   45.501429][ T7175]  sock_read_iter+0x15f/0x1e0
[   45.506104][ T7175]  new_sync_read+0x389/0x4f0
[   45.510725][ T7175]  __vfs_read+0xb1/0xc0
[   45.514865][ T7175]  vfs_read+0x143/0x2c0
[   45.519078][ T7175]  ksys_read+0xd5/0x1b0
[   45.523234][ T7175]  __x64_sys_read+0x4c/0x60
[   45.527724][ T7175]  do_syscall_64+0xcc/0x370
[   45.532210][ T7175]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   45.538084][ T7175] RIP: 0033:0x47c530
[   45.541970][ T7175] 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
[   45.561563][ T7175] RSP: 002b:000000c4202b9818 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   45.569954][ T7175] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   45.577903][ T7175] RDX: 0000000000001000 RSI: 000000c4203fe000 RDI: 0000000000000003
[   45.586024][ T7175] RBP: 000000c4202b9870 R08: 0000000000000000 R09: 0000000000000000
[   45.593972][ T7175] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000010
[   45.601931][ T7175] R13: ffffffffffffffff R14: 0000000000000002 R15: ffffffffffffffff
[   45.611512][ T7175] Kernel Offset: disabled
[   45.615836][ T7175] Rebooting in 86400 seconds..