Warning: Permanently added '10.128.0.34' (ECDSA) to the list of known hosts.
2019/10/22 07:50:59 fuzzer started
2019/10/22 07:51:01 dialing manager at 10.128.0.105:37053
2019/10/22 07:51:01 syscalls: 2524
2019/10/22 07:51:01 code coverage: enabled
2019/10/22 07:51:01 comparison tracing: enabled
2019/10/22 07:51:01 extra coverage: extra coverage is not supported by the kernel
2019/10/22 07:51:01 setuid sandbox: enabled
2019/10/22 07:51:01 namespace sandbox: enabled
2019/10/22 07:51:01 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/22 07:51:01 fault injection: enabled
2019/10/22 07:51:01 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/22 07:51:01 net packet injection: enabled
2019/10/22 07:51:01 net device setup: enabled
2019/10/22 07:51:01 concurrency sanitizer: enabled
syzkaller login: [   49.004214][ T7310] ==================================================================
[   49.012370][ T7310] BUG: KCSAN: data-race in tcp_add_backlog / tcp_recvmsg
[   49.019597][ T7310] 
[   49.021910][ T7310] write to 0xffff888123024138 of 8 bytes by interrupt on cpu 1:
[   49.029535][ T7310]  tcp_add_backlog+0x45a/0xcc0
[   49.034346][ T7310]  tcp_v4_rcv+0x1a60/0x1bb0
[   49.039029][ T7310]  ip_protocol_deliver_rcu+0x4d/0x420
[   49.044382][ T7310]  ip_local_deliver_finish+0x110/0x140
[   49.050019][ T7310]  ip_local_deliver+0x133/0x210
[   49.054904][ T7310]  ip_rcv_finish+0x121/0x160
[   49.059830][ T7310]  ip_rcv+0x18f/0x1a0
[   49.063813][ T7310]  __netif_receive_skb_one_core+0xa7/0xe0
[   49.070043][ T7310]  __netif_receive_skb+0x37/0xf0
[   49.074974][ T7310]  netif_receive_skb_internal+0x59/0x190
[   49.080659][ T7310]  napi_gro_receive+0x28f/0x330
[   49.085492][ T7310]  receive_buf+0x284/0x30b0
[   49.090054][ T7310]  virtnet_poll+0x436/0x7d0
[   49.094566][ T7310]  net_rx_action+0x3ae/0xa90
[   49.099158][ T7310] 
[   49.101490][ T7310] read to 0xffff888123024138 of 8 bytes by task 7310 on cpu 0:
[   49.109030][ T7310]  tcp_recvmsg+0x470/0x1a30
[   49.113537][ T7310]  inet_recvmsg+0xbb/0x250
[   49.117950][ T7310]  sock_recvmsg+0x92/0xb0
[   49.122257][ T7310]  sock_read_iter+0x15f/0x1e0
[   49.127007][ T7310]  new_sync_read+0x389/0x4f0
[   49.131572][ T7310]  __vfs_read+0xb1/0xc0
[   49.135706][ T7310]  vfs_read+0x143/0x2c0
[   49.139841][ T7310]  ksys_read+0xd5/0x1b0
[   49.144049][ T7310]  __x64_sys_read+0x4c/0x60
[   49.148695][ T7310]  do_syscall_64+0xcc/0x370
[   49.153530][ T7310]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   49.159661][ T7310] 
[   49.162049][ T7310] Reported by Kernel Concurrency Sanitizer on:
[   49.168180][ T7310] CPU: 0 PID: 7310 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   49.175609][ T7310] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   49.185672][ T7310] ==================================================================
[   49.193873][ T7310] Kernel panic - not syncing: panic_on_warn set ...
[   49.200486][ T7310] CPU: 0 PID: 7310 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   49.208056][ T7310] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   49.218096][ T7310] Call Trace:
[   49.221393][ T7310]  dump_stack+0xf5/0x159
[   49.225618][ T7310]  panic+0x210/0x640
[   49.229496][ T7310]  ? __x64_sys_read+0x4c/0x60
[   49.234164][ T7310]  ? vprintk_func+0x8d/0x140
[   49.238766][ T7310]  kcsan_report.cold+0xc/0x10
[   49.243434][ T7310]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   49.248962][ T7310]  __tsan_read8+0x2c/0x30
[   49.253283][ T7310]  tcp_recvmsg+0x470/0x1a30
[   49.257783][ T7310]  inet_recvmsg+0xbb/0x250
[   49.262181][ T7310]  ? __tsan_read8+0x2c/0x30
[   49.266694][ T7310]  ? inet_sendpage+0x100/0x100
[   49.271450][ T7310]  sock_recvmsg+0x92/0xb0
[   49.275762][ T7310]  sock_read_iter+0x15f/0x1e0
[   49.280426][ T7310]  new_sync_read+0x389/0x4f0
[   49.285159][ T7310]  __vfs_read+0xb1/0xc0
[   49.289308][ T7310]  vfs_read+0x143/0x2c0
[   49.293446][ T7310]  ksys_read+0xd5/0x1b0
[   49.297768][ T7310]  __x64_sys_read+0x4c/0x60
[   49.302299][ T7310]  do_syscall_64+0xcc/0x370
[   49.306813][ T7310]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   49.312682][ T7310] RIP: 0033:0x47c530
[   49.316561][ T7310] 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
[   49.336334][ T7310] RSP: 002b:000000c4204e77d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   49.344756][ T7310] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   49.352728][ T7310] RDX: 0000000000001000 RSI: 000000c4202de000 RDI: 0000000000000003
[   49.360707][ T7310] RBP: 000000c4204e7830 R08: 0000000000000000 R09: 0000000000000000
[   49.368665][ T7310] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000200
[   49.376639][ T7310] R13: ffffffffffffffff R14: 0000000000000002 R15: ffffffffffffffff
[   49.387296][ T7310] Kernel Offset: disabled
[   49.391729][ T7310] Rebooting in 86400 seconds..