Warning: Permanently added '10.128.0.91' (ECDSA) to the list of known hosts.
2019/10/17 00:50:55 fuzzer started
2019/10/17 00:50:56 dialing manager at 10.128.0.105:33899
2019/10/17 00:50:56 syscalls: 2524
2019/10/17 00:50:56 code coverage: enabled
2019/10/17 00:50:56 comparison tracing: enabled
2019/10/17 00:50:56 extra coverage: extra coverage is not supported by the kernel
2019/10/17 00:50:56 setuid sandbox: enabled
2019/10/17 00:50:56 namespace sandbox: enabled
2019/10/17 00:50:56 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/17 00:50:56 fault injection: enabled
2019/10/17 00:50:56 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/17 00:50:56 net packet injection: enabled
2019/10/17 00:50:56 net device setup: enabled
2019/10/17 00:50:56 concurrency sanitizer: enabled
syzkaller login: [   45.428751][ T7191] ==================================================================
[   45.436888][ T7191] BUG: KCSAN: data-race in tcp_add_backlog / tcp_rcv_space_adjust
[   45.444711][ T7191] 
[   45.447038][ T7191] read to 0xffff88812932ea0c of 4 bytes by interrupt on cpu 0:
[   45.454572][ T7191]  tcp_add_backlog+0x43/0xcc0
[   45.459255][ T7191]  tcp_v4_rcv+0x1a60/0x1bb0
[   45.463747][ T7191]  ip_protocol_deliver_rcu+0x4d/0x420
[   45.469102][ T7191]  ip_local_deliver_finish+0x110/0x140
[   45.474542][ T7191]  ip_local_deliver+0x133/0x210
[   45.479391][ T7191]  ip_rcv_finish+0x121/0x160
[   45.484057][ T7191]  ip_rcv+0x18f/0x1a0
[   45.488029][ T7191]  __netif_receive_skb_one_core+0xa7/0xe0
[   45.493722][ T7191]  __netif_receive_skb+0x37/0xf0
[   45.498633][ T7191]  netif_receive_skb_internal+0x59/0x190
[   45.504236][ T7191]  napi_gro_receive+0x28f/0x330
[   45.509069][ T7191]  receive_buf+0x284/0x30b0
[   45.513552][ T7191]  virtnet_poll+0x436/0x7d0
[   45.518030][ T7191]  net_rx_action+0x3ae/0xa90
[   45.522590][ T7191] 
[   45.524896][ T7191] write to 0xffff88812932ea0c of 4 bytes by task 7191 on cpu 1:
[   45.532496][ T7191]  tcp_rcv_space_adjust+0x40f/0x4c0
[   45.537676][ T7191]  tcp_recvmsg+0xdaa/0x1a30
[   45.542152][ T7191]  inet_recvmsg+0xbb/0x250
[   45.546552][ T7191]  sock_recvmsg+0x92/0xb0
[   45.550866][ T7191]  sock_read_iter+0x15f/0x1e0
[   45.555517][ T7191]  new_sync_read+0x389/0x4f0
[   45.560080][ T7191]  __vfs_read+0xb1/0xc0
[   45.564207][ T7191]  vfs_read+0x143/0x2c0
[   45.568432][ T7191]  ksys_read+0xd5/0x1b0
[   45.572558][ T7191]  __x64_sys_read+0x4c/0x60
[   45.577040][ T7191]  do_syscall_64+0xcc/0x370
[   45.581517][ T7191]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   45.587374][ T7191] 
[   45.589685][ T7191] Reported by Kernel Concurrency Sanitizer on:
[   45.595908][ T7191] CPU: 1 PID: 7191 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   45.603333][ T7191] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   45.613446][ T7191] ==================================================================
[   45.621542][ T7191] Kernel panic - not syncing: panic_on_warn set ...
[   45.628103][ T7191] CPU: 1 PID: 7191 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   45.635595][ T7191] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   45.645627][ T7191] Call Trace:
[   45.648937][ T7191]  dump_stack+0xf5/0x159
[   45.653163][ T7191]  panic+0x210/0x640
[   45.657043][ T7191]  ? ksys_read+0xd5/0x1b0
[   45.661354][ T7191]  ? vprintk_func+0x8d/0x140
[   45.665925][ T7191]  kcsan_report.cold+0xc/0x1b
[   45.670610][ T7191]  __kcsan_setup_watchpoint+0x3ee/0x510
[   45.676132][ T7191]  __tsan_write4+0x32/0x40
[   45.680524][ T7191]  tcp_rcv_space_adjust+0x40f/0x4c0
[   45.685711][ T7191]  tcp_recvmsg+0xdaa/0x1a30
[   45.690196][ T7191]  ? __kcsan_setup_watchpoint+0x96/0x510
[   45.695806][ T7191]  inet_recvmsg+0xbb/0x250
[   45.700218][ T7191]  ? __tsan_read8+0x2c/0x30
[   45.704708][ T7191]  ? inet_sendpage+0x100/0x100
[   45.709465][ T7191]  sock_recvmsg+0x92/0xb0
[   45.713771][ T7191]  sock_read_iter+0x15f/0x1e0
[   45.718428][ T7191]  new_sync_read+0x389/0x4f0
[   45.722998][ T7191]  __vfs_read+0xb1/0xc0
[   45.727129][ T7191]  vfs_read+0x143/0x2c0
[   45.731260][ T7191]  ksys_read+0xd5/0x1b0
[   45.735395][ T7191]  __x64_sys_read+0x4c/0x60
[   45.739886][ T7191]  do_syscall_64+0xcc/0x370
[   45.744369][ T7191]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   45.750235][ T7191] RIP: 0033:0x47c530
[   45.754109][ T7191] 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
[   45.773688][ T7191] RSP: 002b:000000c4202d1810 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
[   45.782081][ T7191] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   45.790026][ T7191] RDX: 0000000000001000 RSI: 000000c42039e000 RDI: 0000000000000003
[   45.797972][ T7191] RBP: 000000c4202d1868 R08: 0000000000000000 R09: 0000000000000000
[   45.805919][ T7191] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000008
[   45.813867][ T7191] R13: ffffffffffffffff R14: 0000000000000020 R15: ffffffffffffffff
[   45.823204][ T7191] Kernel Offset: disabled
[   45.827531][ T7191] Rebooting in 86400 seconds..