Warning: Permanently added '10.128.0.220' (ECDSA) to the list of known hosts.
2019/10/22 12:51:22 fuzzer started
2019/10/22 12:51:23 dialing manager at 10.128.0.105:37053
2019/10/22 12:51:23 syscalls: 2524
2019/10/22 12:51:23 code coverage: enabled
2019/10/22 12:51:23 comparison tracing: enabled
2019/10/22 12:51:23 extra coverage: extra coverage is not supported by the kernel
2019/10/22 12:51:23 setuid sandbox: enabled
2019/10/22 12:51:23 namespace sandbox: enabled
2019/10/22 12:51:23 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/22 12:51:23 fault injection: enabled
2019/10/22 12:51:23 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/22 12:51:23 net packet injection: enabled
2019/10/22 12:51:23 net device setup: enabled
2019/10/22 12:51:23 concurrency sanitizer: enabled
syzkaller login: [   46.121158][ T7107] ==================================================================
[   46.129298][ T7107] BUG: KCSAN: data-race in tcp_poll / tcp_queue_rcv
[   46.135877][ T7107] 
[   46.138198][ T7107] write to 0xffff8881293de5b8 of 4 bytes by interrupt on cpu 0:
[   46.145819][ T7107]  tcp_queue_rcv+0x180/0x380
[   46.150397][ T7107]  tcp_rcv_established+0xbf1/0xf50
[   46.155485][ T7107]  tcp_v4_do_rcv+0x381/0x4e0
[   46.160050][ T7107]  tcp_v4_rcv+0x19dc/0x1bb0
[   46.164529][ T7107]  ip_protocol_deliver_rcu+0x4d/0x420
[   46.169910][ T7107]  ip_local_deliver_finish+0x110/0x140
[   46.175340][ T7107]  ip_local_deliver+0x133/0x210
[   46.180165][ T7107]  ip_rcv_finish+0x121/0x160
[   46.184725][ T7107]  ip_rcv+0x18f/0x1a0
[   46.188683][ T7107]  __netif_receive_skb_one_core+0xa7/0xe0
[   46.194376][ T7107]  __netif_receive_skb+0x37/0xf0
[   46.199323][ T7107]  netif_receive_skb_internal+0x59/0x190
[   46.204931][ T7107]  napi_gro_receive+0x28f/0x330
[   46.209756][ T7107]  receive_buf+0x284/0x30b0
[   46.214234][ T7107] 
[   46.216543][ T7107] read to 0xffff8881293de5b8 of 4 bytes by task 7107 on cpu 1:
[   46.224075][ T7107]  tcp_poll+0x204/0x6b0
[   46.228206][ T7107]  sock_poll+0xed/0x250
[   46.232335][ T7107]  ep_item_poll.isra.0+0x90/0x190
[   46.237333][ T7107]  ep_send_events_proc+0x113/0x590
[   46.242426][ T7107]  ep_scan_ready_list.constprop.0+0x189/0x500
[   46.248466][ T7107]  ep_poll+0xe3/0x900
[   46.252423][ T7107]  do_epoll_wait+0x162/0x180
[   46.256990][ T7107]  __x64_sys_epoll_pwait+0xcd/0x180
[   46.262160][ T7107]  do_syscall_64+0xcc/0x370
[   46.266638][ T7107]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   46.272507][ T7107] 
[   46.274809][ T7107] Reported by Kernel Concurrency Sanitizer on:
[   46.280935][ T7107] CPU: 1 PID: 7107 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   46.288368][ T7107] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   46.298536][ T7107] ==================================================================
[   46.306621][ T7107] Kernel panic - not syncing: panic_on_warn set ...
[   46.313200][ T7107] CPU: 1 PID: 7107 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   46.320634][ T7107] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   46.330663][ T7107] Call Trace:
[   46.333938][ T7107]  dump_stack+0xf5/0x159
[   46.338158][ T7107]  panic+0x210/0x640
[   46.342078][ T7107]  ? do_syscall_64+0xcc/0x370
[   46.346762][ T7107]  ? vprintk_func+0x8d/0x140
[   46.351366][ T7107]  kcsan_report.cold+0xc/0x10
[   46.356029][ T7107]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   46.361550][ T7107]  ? tcp_recvmsg+0x65b/0x1a30
[   46.366211][ T7107]  __tsan_read4+0x2c/0x30
[   46.370523][ T7107]  tcp_poll+0x204/0x6b0
[   46.374670][ T7107]  ? tcp_alloc_md5sig_pool+0x320/0x320
[   46.380114][ T7107]  sock_poll+0xed/0x250
[   46.384255][ T7107]  ? sock_read_iter+0x1e0/0x1e0
[   46.389092][ T7107]  ep_item_poll.isra.0+0x90/0x190
[   46.394096][ T7107]  ep_send_events_proc+0x113/0x590
[   46.399223][ T7107]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   46.404838][ T7107]  ep_scan_ready_list.constprop.0+0x189/0x500
[   46.410896][ T7107]  ? ep_loop_check_proc+0x2f0/0x2f0
[   46.416081][ T7107]  ep_poll+0xe3/0x900
[   46.420057][ T7107]  ? __fget+0xb8/0x1d0
[   46.424128][ T7107]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   46.429738][ T7107]  ? __fget_light+0xaf/0x190
[   46.434313][ T7107]  do_epoll_wait+0x162/0x180
[   46.438887][ T7107]  __x64_sys_epoll_pwait+0xcd/0x180
[   46.444064][ T7107]  do_syscall_64+0xcc/0x370
[   46.448566][ T7107]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   46.454430][ T7107] RIP: 0033:0x45b300
[   46.458304][ T7107] Code: 0f 05 89 44 24 20 c3 cc cc cc 8b 7c 24 08 48 8b 74 24 10 8b 54 24 18 44 8b 54 24 1c 49 c7 c0 00 00 00 00 b8 19 01 00 00 0f 05 <89> 44 24 20 c3 cc cc cc cc cc cc cc cc cc cc cc 8b 7c 24 08 48 c7
[   46.478062][ T7107] RSP: 002b:000000c4203c1860 EFLAGS: 00000246 ORIG_RAX: 0000000000000119
[   46.486445][ T7107] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000045b300
[   46.494389][ T7107] RDX: 0000000000000080 RSI: 000000c4203c18a0 RDI: 0000000000000004
[   46.502346][ T7107] RBP: 000000c4203c1ea0 R08: 0000000000000000 R09: 0000000000000000
[   46.510303][ T7107] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000100
[   46.518249][ T7107] R13: ffffffffffffffff R14: 0000000000000002 R15: ffffffffffffffff
[   46.527673][ T7107] Kernel Offset: disabled
[   46.532009][ T7107] Rebooting in 86400 seconds..