Warning: Permanently added '10.128.0.190' (ECDSA) to the list of known hosts.
2019/10/22 21:42:06 fuzzer started
2019/10/22 21:42:08 dialing manager at 10.128.0.105:33369
2019/10/22 21:42:08 syscalls: 2524
2019/10/22 21:42:08 code coverage: enabled
2019/10/22 21:42:08 comparison tracing: enabled
2019/10/22 21:42:08 extra coverage: extra coverage is not supported by the kernel
2019/10/22 21:42:08 setuid sandbox: enabled
2019/10/22 21:42:08 namespace sandbox: enabled
2019/10/22 21:42:08 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/22 21:42:08 fault injection: enabled
2019/10/22 21:42:08 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/22 21:42:08 net packet injection: enabled
2019/10/22 21:42:08 net device setup: enabled
2019/10/22 21:42:08 concurrency sanitizer: enabled
syzkaller login: [   46.776437][ T7296] ==================================================================
[   46.784685][ T7296] BUG: KCSAN: data-race in __tcp_select_window / tcp_add_backlog
[   46.792403][ T7296] 
[   46.794713][ T7296] write to 0xffff888124d24a2c of 4 bytes by interrupt on cpu 1:
[   46.802319][ T7296]  tcp_add_backlog+0x4a0/0xcc0
[   46.807074][ T7296]  tcp_v4_rcv+0x1a60/0x1bb0
[   46.811550][ T7296]  ip_protocol_deliver_rcu+0x4d/0x420
[   46.816895][ T7296]  ip_local_deliver_finish+0x110/0x140
[   46.822330][ T7296]  ip_local_deliver+0x133/0x210
[   46.827187][ T7296]  ip_rcv_finish+0x121/0x160
[   46.831763][ T7296]  ip_rcv+0x18f/0x1a0
[   46.835799][ T7296]  __netif_receive_skb_one_core+0xa7/0xe0
[   46.841497][ T7296]  __netif_receive_skb+0x37/0xf0
[   46.846416][ T7296]  netif_receive_skb_internal+0x59/0x190
[   46.852061][ T7296]  napi_gro_receive+0x28f/0x330
[   46.856889][ T7296]  receive_buf+0x284/0x30b0
[   46.861368][ T7296]  virtnet_poll+0x436/0x7d0
[   46.865845][ T7296]  net_rx_action+0x3ae/0xa90
[   46.870404][ T7296] 
[   46.872754][ T7296] read to 0xffff888124d24a2c of 4 bytes by task 7296 on cpu 0:
[   46.880270][ T7296]  __tcp_select_window+0x6b/0x4d0
[   46.885269][ T7296]  __tcp_transmit_skb+0x700/0x1d60
[   46.890358][ T7296]  __tcp_send_ack+0x246/0x300
[   46.895021][ T7296]  tcp_send_ack+0x34/0x40
[   46.899340][ T7296]  tcp_cleanup_rbuf+0x130/0x360
[   46.904164][ T7296]  tcp_recvmsg+0x633/0x1a30
[   46.908642][ T7296]  inet_recvmsg+0xbb/0x250
[   46.913031][ T7296]  sock_recvmsg+0x92/0xb0
[   46.917430][ T7296]  sock_read_iter+0x15f/0x1e0
[   46.922082][ T7296]  new_sync_read+0x389/0x4f0
[   46.926829][ T7296]  __vfs_read+0xb1/0xc0
[   46.930981][ T7296]  vfs_read+0x143/0x2c0
[   46.935113][ T7296]  ksys_read+0xd5/0x1b0
[   46.939238][ T7296] 
[   46.941551][ T7296] Reported by Kernel Concurrency Sanitizer on:
[   46.947680][ T7296] CPU: 0 PID: 7296 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   46.955107][ T7296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   46.965134][ T7296] ==================================================================
[   46.973180][ T7296] Kernel panic - not syncing: panic_on_warn set ...
[   46.979747][ T7296] CPU: 0 PID: 7296 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   46.987173][ T7296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   46.997213][ T7296] Call Trace:
[   47.000500][ T7296]  dump_stack+0xf5/0x159
[   47.004722][ T7296]  panic+0x210/0x640
[   47.008602][ T7296]  ? sock_read_iter+0x15f/0x1e0
[   47.013427][ T7296]  ? vprintk_func+0x8d/0x140
[   47.017999][ T7296]  kcsan_report.cold+0xc/0x10
[   47.022656][ T7296]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   47.028179][ T7296]  __tsan_read4+0x2c/0x30
[   47.032489][ T7296]  __tcp_select_window+0x6b/0x4d0
[   47.037492][ T7296]  __tcp_transmit_skb+0x700/0x1d60
[   47.042585][ T7296]  __tcp_send_ack+0x246/0x300
[   47.047252][ T7296]  tcp_send_ack+0x34/0x40
[   47.051559][ T7296]  tcp_cleanup_rbuf+0x130/0x360
[   47.056399][ T7296]  tcp_recvmsg+0x633/0x1a30
[   47.060894][ T7296]  inet_recvmsg+0xbb/0x250
[   47.065289][ T7296]  ? __tsan_read8+0x2c/0x30
[   47.069779][ T7296]  ? inet_sendpage+0x100/0x100
[   47.074522][ T7296]  sock_recvmsg+0x92/0xb0
[   47.078830][ T7296]  sock_read_iter+0x15f/0x1e0
[   47.083574][ T7296]  new_sync_read+0x389/0x4f0
[   47.088146][ T7296]  __vfs_read+0xb1/0xc0
[   47.092279][ T7296]  vfs_read+0x143/0x2c0
[   47.096413][ T7296]  ksys_read+0xd5/0x1b0
[   47.100548][ T7296]  __x64_sys_read+0x4c/0x60
[   47.105029][ T7296]  do_syscall_64+0xcc/0x370
[   47.109508][ T7296]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   47.115393][ T7296] RIP: 0033:0x47c530
[   47.119268][ T7296] 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
[   47.138855][ T7296] RSP: 002b:000000c4203cf7d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   47.147241][ T7296] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   47.155197][ T7296] RDX: 0000000000001000 RSI: 000000c4203d2000 RDI: 0000000000000003
[   47.163144][ T7296] RBP: 000000c4203cf830 R08: 0000000000000000 R09: 0000000000000000
[   47.171100][ T7296] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000004
[   47.179055][ T7296] R13: ffffffffffffffff R14: 0000000000000002 R15: ffffffffffffffff
[   47.188385][ T7296] Kernel Offset: disabled
[   47.192701][ T7296] Rebooting in 86400 seconds..