Warning: Permanently added '10.128.0.174' (ECDSA) to the list of known hosts.
2019/10/22 22:02:54 fuzzer started
2019/10/22 22:02:55 dialing manager at 10.128.0.105:33369
2019/10/22 22:02:55 syscalls: 2524
2019/10/22 22:02:55 code coverage: enabled
2019/10/22 22:02:55 comparison tracing: enabled
2019/10/22 22:02:55 extra coverage: extra coverage is not supported by the kernel
2019/10/22 22:02:55 setuid sandbox: enabled
2019/10/22 22:02:55 namespace sandbox: enabled
2019/10/22 22:02:55 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/22 22:02:55 fault injection: enabled
2019/10/22 22:02:55 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/22 22:02:55 net packet injection: enabled
2019/10/22 22:02:55 net device setup: enabled
2019/10/22 22:02:55 concurrency sanitizer: enabled
[   45.912242][ T7293] ==================================================================
[   45.920361][ T7293] BUG: KCSAN: data-race in __tcp_select_window / tcp_add_backlog
[   45.928046][ T7293] 
[   45.930351][ T7293] write to 0xffff888125c2e9ec of 4 bytes by interrupt on cpu 1:
[   45.937953][ T7293]  tcp_add_backlog+0x4a0/0xcc0
[   45.942708][ T7293]  tcp_v4_rcv+0x1a60/0x1bb0
[   45.947301][ T7293]  ip_protocol_deliver_rcu+0x4d/0x420
[   45.952649][ T7293]  ip_local_deliver_finish+0x110/0x140
[   45.958090][ T7293]  ip_local_deliver+0x133/0x210
[   45.962926][ T7293]  ip_rcv_finish+0x121/0x160
[   45.967496][ T7293]  ip_rcv+0x18f/0x1a0
[   45.980486][ T7293]  __netif_receive_skb_one_core+0xa7/0xe0
[   45.986177][ T7293]  __netif_receive_skb+0x37/0xf0
[   45.991090][ T7293]  netif_receive_skb_internal+0x59/0x190
[   45.996704][ T7293]  napi_gro_receive+0x28f/0x330
[   46.001537][ T7293]  receive_buf+0x284/0x30b0
[   46.006012][ T7293]  virtnet_poll+0x436/0x7d0
[   46.010488][ T7293]  net_rx_action+0x3ae/0xa90
[   46.015047][ T7293] 
[   46.017362][ T7293] read to 0xffff888125c2e9ec of 4 bytes by task 7293 on cpu 0:
[   46.024982][ T7293]  __tcp_select_window+0x6b/0x4d0
[   46.030003][ T7293]  __tcp_transmit_skb+0x700/0x1d60
[   46.035088][ T7293]  __tcp_send_ack+0x246/0x300
[   46.039737][ T7293]  tcp_send_ack+0x34/0x40
[   46.044040][ T7293]  tcp_cleanup_rbuf+0x130/0x360
[   46.048872][ T7293]  tcp_recvmsg+0x633/0x1a30
[   46.053350][ T7293]  inet_recvmsg+0xbb/0x250
[   46.057742][ T7293]  sock_recvmsg+0x92/0xb0
[   46.062047][ T7293]  sock_read_iter+0x15f/0x1e0
[   46.066699][ T7293]  new_sync_read+0x389/0x4f0
[   46.071259][ T7293]  __vfs_read+0xb1/0xc0
[   46.075386][ T7293]  vfs_read+0x143/0x2c0
[   46.079517][ T7293]  ksys_read+0xd5/0x1b0
[   46.083656][ T7293] 
[   46.085966][ T7293] Reported by Kernel Concurrency Sanitizer on:
[   46.092105][ T7293] CPU: 0 PID: 7293 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   46.099538][ T7293] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   46.109562][ T7293] ==================================================================
[   46.117594][ T7293] Kernel panic - not syncing: panic_on_warn set ...
[   46.124153][ T7293] CPU: 0 PID: 7293 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   46.131575][ T7293] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   46.141699][ T7293] Call Trace:
[   46.144978][ T7293]  dump_stack+0xf5/0x159
[   46.149197][ T7293]  panic+0x210/0x640
[   46.153069][ T7293]  ? sock_read_iter+0x15f/0x1e0
[   46.157905][ T7293]  ? vprintk_func+0x8d/0x140
[   46.162474][ T7293]  kcsan_report.cold+0xc/0x10
[   46.167131][ T7293]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   46.172654][ T7293]  __tsan_read4+0x2c/0x30
[   46.176961][ T7293]  __tcp_select_window+0x6b/0x4d0
[   46.181963][ T7293]  __tcp_transmit_skb+0x700/0x1d60
[   46.187055][ T7293]  __tcp_send_ack+0x246/0x300
[   46.191719][ T7293]  tcp_send_ack+0x34/0x40
[   46.196118][ T7293]  tcp_cleanup_rbuf+0x130/0x360
[   46.200959][ T7293]  tcp_recvmsg+0x633/0x1a30
[   46.205441][ T7293]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   46.211051][ T7293]  inet_recvmsg+0xbb/0x250
[   46.215448][ T7293]  ? __tsan_read8+0x2c/0x30
[   46.219925][ T7293]  ? inet_sendpage+0x100/0x100
[   46.224675][ T7293]  sock_recvmsg+0x92/0xb0
[   46.228982][ T7293]  sock_read_iter+0x15f/0x1e0
[   46.233649][ T7293]  new_sync_read+0x389/0x4f0
[   46.238234][ T7293]  __vfs_read+0xb1/0xc0
[   46.242366][ T7293]  vfs_read+0x143/0x2c0
[   46.246500][ T7293]  ksys_read+0xd5/0x1b0
[   46.250631][ T7293]  __x64_sys_read+0x4c/0x60
[   46.255121][ T7293]  do_syscall_64+0xcc/0x370
[   46.259610][ T7293]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   46.265476][ T7293] RIP: 0033:0x47c530
[   46.269348][ T7293] 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
[   46.288923][ T7293] RSP: 002b:000000c4204e37d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   46.297392][ T7293] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   46.305337][ T7293] RDX: 0000000000001000 RSI: 000000c420134000 RDI: 0000000000000003
[   46.313282][ T7293] RBP: 000000c4204e3830 R08: 0000000000000000 R09: 0000000000000000
[   46.321226][ T7293] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000004
[   46.329177][ T7293] R13: 000000c420020e90 R14: 0000000000000002 R15: ffffffffffffffff
[   46.338546][ T7293] Kernel Offset: disabled
[   46.342866][ T7293] Rebooting in 86400 seconds..