Warning: Permanently added '10.128.10.37' (ECDSA) to the list of known hosts.
2019/10/30 20:44:34 fuzzer started
2019/10/30 20:44:35 dialing manager at 10.128.0.105:37477
2019/10/30 20:44:35 syscalls: 2540
2019/10/30 20:44:35 code coverage: enabled
2019/10/30 20:44:35 comparison tracing: enabled
2019/10/30 20:44:35 extra coverage: extra coverage is not supported by the kernel
2019/10/30 20:44:35 setuid sandbox: enabled
2019/10/30 20:44:35 namespace sandbox: enabled
2019/10/30 20:44:35 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/30 20:44:35 fault injection: enabled
2019/10/30 20:44:35 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/30 20:44:35 net packet injection: enabled
2019/10/30 20:44:35 net device setup: enabled
2019/10/30 20:44:35 concurrency sanitizer: enabled
2019/10/30 20:44:35 adding functions to KCSAN blacklist: '__hrtimer_run_queues' 'mod_timer' 'tomoyo_supervisor' 
syzkaller login: [   55.732796][ T7215] ==================================================================
[   55.740975][ T7215] BUG: KCSAN: data-race in __tcp_select_window / tcp_add_backlog
[   55.748667][ T7215] 
[   55.751074][ T7215] write to 0xffff88811c2032ec of 4 bytes by interrupt on cpu 1:
[   55.758701][ T7215]  tcp_add_backlog+0x4a0/0xcc0
[   55.763476][ T7215]  tcp_v4_rcv+0x1a60/0x1bb0
[   55.767959][ T7215]  ip_protocol_deliver_rcu+0x4d/0x420
[   55.773305][ T7215]  ip_local_deliver_finish+0x110/0x140
[   55.778742][ T7215]  ip_local_deliver+0x133/0x210
[   55.783666][ T7215]  ip_rcv_finish+0x121/0x160
[   55.788511][ T7215]  ip_rcv+0x18f/0x1a0
[   55.792472][ T7215]  __netif_receive_skb_one_core+0xa7/0xe0
[   55.798165][ T7215]  __netif_receive_skb+0x37/0xf0
[   55.803080][ T7215]  netif_receive_skb_internal+0x59/0x190
[   55.808702][ T7215]  napi_gro_receive+0x28f/0x330
[   55.813553][ T7215]  receive_buf+0x284/0x30b0
[   55.818038][ T7215]  virtnet_poll+0x436/0x7d0
[   55.822532][ T7215]  net_rx_action+0x3ae/0xa90
[   55.827094][ T7215] 
[   55.829409][ T7215] read to 0xffff88811c2032ec of 4 bytes by task 7215 on cpu 0:
[   55.836932][ T7215]  __tcp_select_window+0x6b/0x4d0
[   55.841941][ T7215]  __tcp_transmit_skb+0x700/0x1d60
[   55.847035][ T7215]  __tcp_send_ack+0x246/0x300
[   55.851689][ T7215]  tcp_send_ack+0x34/0x40
[   55.856080][ T7215]  tcp_cleanup_rbuf+0x130/0x360
[   55.860940][ T7215]  tcp_recvmsg+0x633/0x1a30
[   55.865420][ T7215]  inet_recvmsg+0xbb/0x250
[   55.869821][ T7215]  sock_recvmsg+0x92/0xb0
[   55.874136][ T7215]  sock_read_iter+0x15f/0x1e0
[   55.878807][ T7215]  new_sync_read+0x389/0x4f0
[   55.883380][ T7215]  __vfs_read+0xb1/0xc0
[   55.887561][ T7215]  vfs_read+0x143/0x2c0
[   55.891702][ T7215]  ksys_read+0xd5/0x1b0
[   55.895830][ T7215] 
[   55.898134][ T7215] Reported by Kernel Concurrency Sanitizer on:
[   55.904264][ T7215] CPU: 0 PID: 7215 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   55.911699][ T7215] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   55.921728][ T7215] ==================================================================
[   55.929945][ T7215] Kernel panic - not syncing: panic_on_warn set ...
[   55.936510][ T7215] CPU: 0 PID: 7215 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   55.943941][ T7215] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   55.953973][ T7215] Call Trace:
[   55.957248][ T7215]  dump_stack+0xf5/0x159
[   55.961480][ T7215]  panic+0x210/0x640
[   55.965382][ T7215]  ? sock_read_iter+0x15f/0x1e0
[   55.970222][ T7215]  ? vprintk_func+0x8d/0x140
[   55.974790][ T7215]  kcsan_report.cold+0xc/0x10
[   55.979453][ T7215]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   55.984976][ T7215]  __tsan_read4+0x2c/0x30
[   55.989284][ T7215]  __tcp_select_window+0x6b/0x4d0
[   55.994296][ T7215]  __tcp_transmit_skb+0x700/0x1d60
[   55.999388][ T7215]  __tcp_send_ack+0x246/0x300
[   56.004041][ T7215]  tcp_send_ack+0x34/0x40
[   56.008349][ T7215]  tcp_cleanup_rbuf+0x130/0x360
[   56.013179][ T7215]  tcp_recvmsg+0x633/0x1a30
[   56.017678][ T7215]  inet_recvmsg+0xbb/0x250
[   56.022069][ T7215]  ? __tsan_read8+0x2c/0x30
[   56.026595][ T7215]  ? inet_sendpage+0x100/0x100
[   56.031339][ T7215]  sock_recvmsg+0x92/0xb0
[   56.035645][ T7215]  sock_read_iter+0x15f/0x1e0
[   56.040304][ T7215]  new_sync_read+0x389/0x4f0
[   56.044887][ T7215]  __vfs_read+0xb1/0xc0
[   56.049037][ T7215]  vfs_read+0x143/0x2c0
[   56.053184][ T7215]  ksys_read+0xd5/0x1b0
[   56.057318][ T7215]  __x64_sys_read+0x4c/0x60
[   56.061802][ T7215]  do_syscall_64+0xcc/0x370
[   56.066285][ T7215]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   56.072154][ T7215] RIP: 0033:0x47c530
[   56.076029][ T7215] 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
[   56.095609][ T7215] RSP: 002b:000000c4204e37d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
[   56.103995][ T7215] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   56.111948][ T7215] RDX: 0000000000001000 RSI: 000000c4200d4000 RDI: 0000000000000003
[   56.119918][ T7215] RBP: 000000c4204e3828 R08: 0000000000000000 R09: 0000000000000000
[   56.127866][ T7215] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000008
[   56.135906][ T7215] R13: ffffffffffffffff R14: 0000000000000002 R15: ffffffffffffffff
[   56.145320][ T7215] Kernel Offset: disabled
[   56.149650][ T7215] Rebooting in 86400 seconds..