Warning: Permanently added '10.128.0.214' (ECDSA) to the list of known hosts.
2019/10/20 05:38:30 fuzzer started
2019/10/20 05:38:31 dialing manager at 10.128.0.105:43535
2019/10/20 05:38:31 syscalls: 2524
2019/10/20 05:38:31 code coverage: enabled
2019/10/20 05:38:31 comparison tracing: enabled
2019/10/20 05:38:31 extra coverage: extra coverage is not supported by the kernel
2019/10/20 05:38:31 setuid sandbox: enabled
2019/10/20 05:38:31 namespace sandbox: enabled
2019/10/20 05:38:31 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/20 05:38:31 fault injection: enabled
2019/10/20 05:38:31 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/20 05:38:31 net packet injection: enabled
2019/10/20 05:38:31 net device setup: enabled
2019/10/20 05:38:31 concurrency sanitizer: enabled
syzkaller login: [   58.399633][ T7281] ==================================================================
[   58.407898][ T7281] BUG: KCSAN: data-race in tcp_add_backlog / tcp_rcv_space_adjust
[   58.415676][ T7281] 
[   58.417988][ T7281] read to 0xffff888126aeea0c of 4 bytes by interrupt on cpu 1:
[   58.425516][ T7281]  tcp_add_backlog+0x43/0xcc0
[   58.430277][ T7281]  tcp_v4_rcv+0x1a60/0x1bb0
[   58.434759][ T7281]  ip_protocol_deliver_rcu+0x4d/0x420
[   58.440113][ T7281]  ip_local_deliver_finish+0x110/0x140
[   58.445552][ T7281]  ip_local_deliver+0x133/0x210
[   58.450387][ T7281]  ip_rcv_finish+0x121/0x160
[   58.454954][ T7281]  ip_rcv+0x18f/0x1a0
[   58.458916][ T7281]  __netif_receive_skb_one_core+0xa7/0xe0
[   58.464653][ T7281]  __netif_receive_skb+0x37/0xf0
[   58.469591][ T7281]  netif_receive_skb_internal+0x59/0x190
[   58.475204][ T7281]  napi_gro_receive+0x28f/0x330
[   58.480050][ T7281]  receive_buf+0x284/0x30b0
[   58.484531][ T7281]  virtnet_poll+0x436/0x7d0
[   58.489014][ T7281]  net_rx_action+0x3ae/0xa90
[   58.493574][ T7281] 
[   58.495883][ T7281] write to 0xffff888126aeea0c of 4 bytes by task 7281 on cpu 0:
[   58.503497][ T7281]  tcp_rcv_space_adjust+0x40f/0x4c0
[   58.508680][ T7281]  tcp_recvmsg+0xdaa/0x1a30
[   58.513168][ T7281]  inet_recvmsg+0xbb/0x250
[   58.517581][ T7281]  sock_recvmsg+0x92/0xb0
[   58.521903][ T7281]  sock_read_iter+0x15f/0x1e0
[   58.526585][ T7281]  new_sync_read+0x389/0x4f0
[   58.531160][ T7281]  __vfs_read+0xb1/0xc0
[   58.535297][ T7281]  vfs_read+0x143/0x2c0
[   58.539431][ T7281]  ksys_read+0xd5/0x1b0
[   58.543567][ T7281]  __x64_sys_read+0x4c/0x60
[   58.548050][ T7281]  do_syscall_64+0xcc/0x370
[   58.552534][ T7281]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   58.558398][ T7281] 
[   58.560708][ T7281] Reported by Kernel Concurrency Sanitizer on:
[   58.566858][ T7281] CPU: 0 PID: 7281 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   58.574289][ T7281] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   58.584323][ T7281] ==================================================================
[   58.592364][ T7281] Kernel panic - not syncing: panic_on_warn set ...
[   58.598945][ T7281] CPU: 0 PID: 7281 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   58.606378][ T7281] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   58.616414][ T7281] Call Trace:
[   58.619693][ T7281]  dump_stack+0xf5/0x159
[   58.624036][ T7281]  panic+0x210/0x640
[   58.627917][ T7281]  ? ksys_read+0xd5/0x1b0
[   58.632228][ T7281]  ? vprintk_func+0x8d/0x140
[   58.636801][ T7281]  kcsan_report.cold+0xc/0x10
[   58.641590][ T7281]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   58.647132][ T7281]  __tsan_write4+0x32/0x40
[   58.651535][ T7281]  tcp_rcv_space_adjust+0x40f/0x4c0
[   58.656718][ T7281]  tcp_recvmsg+0xdaa/0x1a30
[   58.661338][ T7281]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   58.666956][ T7281]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   58.672572][ T7281]  inet_recvmsg+0xbb/0x250
[   58.676973][ T7281]  ? __tsan_read8+0x2c/0x30
[   58.681461][ T7281]  ? inet_sendpage+0x100/0x100
[   58.686210][ T7281]  sock_recvmsg+0x92/0xb0
[   58.690522][ T7281]  sock_read_iter+0x15f/0x1e0
[   58.695317][ T7281]  new_sync_read+0x389/0x4f0
[   58.699899][ T7281]  __vfs_read+0xb1/0xc0
[   58.704040][ T7281]  vfs_read+0x143/0x2c0
[   58.708196][ T7281]  ksys_read+0xd5/0x1b0
[   58.712333][ T7281]  __x64_sys_read+0x4c/0x60
[   58.716818][ T7281]  do_syscall_64+0xcc/0x370
[   58.721334][ T7281]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   58.727239][ T7281] RIP: 0033:0x47c530
[   58.731260][ T7281] 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
[   58.750939][ T7281] RSP: 002b:000000c4204ef810 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
[   58.759336][ T7281] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   58.767406][ T7281] RDX: 0000000000001000 RSI: 000000c420052000 RDI: 0000000000000003
[   58.775361][ T7281] RBP: 000000c4204ef868 R08: 0000000000000000 R09: 0000000000000000
[   58.783451][ T7281] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004
[   58.791437][ T7281] R13: ffffffffffffffff R14: 0000000000000004 R15: ffffffffffffffff
[   58.801166][ T7281] Kernel Offset: disabled
[   58.805549][ T7281] Rebooting in 86400 seconds..