Warning: Permanently added '10.128.10.2' (ECDSA) to the list of known hosts.
2019/10/19 09:01:18 fuzzer started
2019/10/19 09:01:20 dialing manager at 10.128.0.105:43535
2019/10/19 09:01:20 syscalls: 2524
2019/10/19 09:01:20 code coverage: enabled
2019/10/19 09:01:20 comparison tracing: enabled
2019/10/19 09:01:20 extra coverage: extra coverage is not supported by the kernel
2019/10/19 09:01:20 setuid sandbox: enabled
2019/10/19 09:01:20 namespace sandbox: enabled
2019/10/19 09:01:20 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/19 09:01:20 fault injection: enabled
2019/10/19 09:01:20 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/19 09:01:20 net packet injection: enabled
2019/10/19 09:01:20 net device setup: enabled
2019/10/19 09:01:20 concurrency sanitizer: enabled
syzkaller login: [   45.724332][ T7217] ==================================================================
[   45.732470][ T7217] BUG: KCSAN: data-race in tcp_add_backlog / tcp_rcv_space_adjust
[   45.740244][ T7217] 
[   45.742621][ T7217] read to 0xffff88812376334c of 4 bytes by interrupt on cpu 0:
[   45.750145][ T7217]  tcp_add_backlog+0x43/0xcc0
[   45.754801][ T7217]  tcp_v4_rcv+0x1a60/0x1bb0
[   45.759295][ T7217]  ip_protocol_deliver_rcu+0x4d/0x420
[   45.764645][ T7217]  ip_local_deliver_finish+0x110/0x140
[   45.770084][ T7217]  ip_local_deliver+0x133/0x210
[   45.774911][ T7217]  ip_rcv_finish+0x121/0x160
[   45.779489][ T7217]  ip_rcv+0x18f/0x1a0
[   45.783465][ T7217]  __netif_receive_skb_one_core+0xa7/0xe0
[   45.789160][ T7217]  __netif_receive_skb+0x37/0xf0
[   45.794075][ T7217]  netif_receive_skb_internal+0x59/0x190
[   45.799684][ T7217]  napi_gro_receive+0x28f/0x330
[   45.804512][ T7217]  receive_buf+0x284/0x30b0
[   45.808993][ T7217]  virtnet_poll+0x436/0x7d0
[   45.813576][ T7217]  net_rx_action+0x3ae/0xa90
[   45.818148][ T7217] 
[   45.820543][ T7217] write to 0xffff88812376334c of 4 bytes by task 7217 on cpu 1:
[   45.828264][ T7217]  tcp_rcv_space_adjust+0x40f/0x4c0
[   45.833439][ T7217]  tcp_recvmsg+0xdaa/0x1a30
[   45.837920][ T7217]  inet_recvmsg+0xbb/0x250
[   45.842316][ T7217]  sock_recvmsg+0x92/0xb0
[   45.846637][ T7217]  sock_read_iter+0x15f/0x1e0
[   45.851299][ T7217]  new_sync_read+0x389/0x4f0
[   45.855876][ T7217]  __vfs_read+0xb1/0xc0
[   45.860009][ T7217]  vfs_read+0x143/0x2c0
[   45.864144][ T7217]  ksys_read+0xd5/0x1b0
[   45.868278][ T7217]  __x64_sys_read+0x4c/0x60
[   45.872759][ T7217]  do_syscall_64+0xcc/0x370
[   45.877243][ T7217]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   45.883114][ T7217] 
[   45.885417][ T7217] Reported by Kernel Concurrency Sanitizer on:
[   45.891563][ T7217] CPU: 1 PID: 7217 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   45.899003][ T7217] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   45.909046][ T7217] ==================================================================
[   45.917097][ T7217] Kernel panic - not syncing: panic_on_warn set ...
[   45.923691][ T7217] CPU: 1 PID: 7217 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   45.931132][ T7217] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   45.941174][ T7217] Call Trace:
[   45.944533][ T7217]  dump_stack+0xf5/0x159
[   45.948761][ T7217]  panic+0x210/0x640
[   45.952635][ T7217]  ? ksys_read+0xd5/0x1b0
[   45.956965][ T7217]  ? vprintk_func+0x8d/0x140
[   45.961537][ T7217]  kcsan_report.cold+0xc/0x10
[   45.966208][ T7217]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   45.971731][ T7217]  __tsan_write4+0x32/0x40
[   45.976228][ T7217]  tcp_rcv_space_adjust+0x40f/0x4c0
[   45.981412][ T7217]  tcp_recvmsg+0xdaa/0x1a30
[   45.985898][ T7217]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   45.991511][ T7217]  inet_recvmsg+0xbb/0x250
[   45.995903][ T7217]  ? __tsan_read8+0x2c/0x30
[   46.000396][ T7217]  ? inet_sendpage+0x100/0x100
[   46.005241][ T7217]  sock_recvmsg+0x92/0xb0
[   46.009687][ T7217]  sock_read_iter+0x15f/0x1e0
[   46.014345][ T7217]  new_sync_read+0x389/0x4f0
[   46.018920][ T7217]  __vfs_read+0xb1/0xc0
[   46.023052][ T7217]  vfs_read+0x143/0x2c0
[   46.027189][ T7217]  ksys_read+0xd5/0x1b0
[   46.031324][ T7217]  __x64_sys_read+0x4c/0x60
[   46.035807][ T7217]  do_syscall_64+0xcc/0x370
[   46.040307][ T7217]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   46.046174][ T7217] RIP: 0033:0x47c530
[   46.050051][ T7217] 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
[   46.069637][ T7217] RSP: 002b:000000c4202f37d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   46.078024][ T7217] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   46.085989][ T7217] RDX: 0000000000001000 RSI: 000000c420366000 RDI: 0000000000000003
[   46.093937][ T7217] RBP: 000000c4202f3830 R08: 0000000000000000 R09: 0000000000000000
[   46.101925][ T7217] R10: 0000000000000000 R11: 0000000000000212 R12: 000000000000000f
[   46.109881][ T7217] R13: 000000c420022820 R14: 0000000000000008 R15: ffffffffffffffff
[   46.119177][ T7217] Kernel Offset: disabled
[   46.123503][ T7217] Rebooting in 86400 seconds..