Warning: Permanently added '10.128.0.223' (ECDSA) to the list of known hosts.
2019/10/23 00:32:56 fuzzer started
2019/10/23 00:32:58 dialing manager at 10.128.0.105:33369
2019/10/23 00:32:58 syscalls: 2524
2019/10/23 00:32:58 code coverage: enabled
2019/10/23 00:32:58 comparison tracing: enabled
2019/10/23 00:32:58 extra coverage: extra coverage is not supported by the kernel
2019/10/23 00:32:58 setuid sandbox: enabled
2019/10/23 00:32:58 namespace sandbox: enabled
2019/10/23 00:32:58 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/23 00:32:58 fault injection: enabled
2019/10/23 00:32:58 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/23 00:32:58 net packet injection: enabled
2019/10/23 00:32:58 net device setup: enabled
2019/10/23 00:32:58 concurrency sanitizer: enabled
syzkaller login: [   49.349876][ T7219] ==================================================================
[   49.358025][ T7219] BUG: KCSAN: data-race in tcp_poll / tcp_queue_rcv
[   49.364614][ T7219] 
[   49.366943][ T7219] write to 0xffff888126aa65b8 of 4 bytes by interrupt on cpu 0:
[   49.374569][ T7219]  tcp_queue_rcv+0x180/0x380
[   49.379238][ T7219]  tcp_rcv_established+0xbf1/0xf50
[   49.384328][ T7219]  tcp_v4_do_rcv+0x381/0x4e0
[   49.388932][ T7219]  tcp_v4_rcv+0x19dc/0x1bb0
[   49.393458][ T7219]  ip_protocol_deliver_rcu+0x4d/0x420
[   49.398830][ T7219]  ip_local_deliver_finish+0x110/0x140
[   49.404278][ T7219]  ip_local_deliver+0x133/0x210
[   49.409106][ T7219]  ip_rcv_finish+0x121/0x160
[   49.413680][ T7219]  ip_rcv+0x18f/0x1a0
[   49.417651][ T7219]  __netif_receive_skb_one_core+0xa7/0xe0
[   49.423347][ T7219]  __netif_receive_skb+0x37/0xf0
[   49.428271][ T7219]  netif_receive_skb_internal+0x59/0x190
[   49.433967][ T7219]  napi_gro_receive+0x28f/0x330
[   49.438795][ T7219]  receive_buf+0x284/0x30b0
[   49.443281][ T7219] 
[   49.445590][ T7219] read to 0xffff888126aa65b8 of 4 bytes by task 7219 on cpu 1:
[   49.453294][ T7219]  tcp_poll+0x204/0x6b0
[   49.457428][ T7219]  sock_poll+0xed/0x250
[   49.461561][ T7219]  ep_item_poll.isra.0+0x90/0x190
[   49.466566][ T7219]  ep_send_events_proc+0x113/0x590
[   49.471667][ T7219]  ep_scan_ready_list.constprop.0+0x189/0x500
[   49.478500][ T7219]  ep_poll+0xe3/0x900
[   49.482472][ T7219]  do_epoll_wait+0x162/0x180
[   49.487043][ T7219]  __x64_sys_epoll_pwait+0xcd/0x180
[   49.492220][ T7219]  do_syscall_64+0xcc/0x370
[   49.496725][ T7219]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   49.502602][ T7219] 
[   49.504908][ T7219] Reported by Kernel Concurrency Sanitizer on:
[   49.511056][ T7219] CPU: 1 PID: 7219 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   49.518492][ T7219] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   49.528532][ T7219] ==================================================================
[   49.536573][ T7219] Kernel panic - not syncing: panic_on_warn set ...
[   49.543151][ T7219] CPU: 1 PID: 7219 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   49.550590][ T7219] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   49.560629][ T7219] Call Trace:
[   49.563919][ T7219]  dump_stack+0xf5/0x159
[   49.568319][ T7219]  panic+0x210/0x640
[   49.572195][ T7219]  ? do_syscall_64+0xcc/0x370
[   49.576853][ T7219]  ? vprintk_func+0x8d/0x140
[   49.581435][ T7219]  kcsan_report.cold+0xc/0x10
[   49.586106][ T7219]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   49.591633][ T7219]  ? tcp_recvmsg+0x65b/0x1a30
[   49.596306][ T7219]  __tsan_read4+0x2c/0x30
[   49.600615][ T7219]  tcp_poll+0x204/0x6b0
[   49.604767][ T7219]  ? tcp_alloc_md5sig_pool+0x320/0x320
[   49.610210][ T7219]  sock_poll+0xed/0x250
[   49.615127][ T7219]  ? sock_read_iter+0x1e0/0x1e0
[   49.619988][ T7219]  ep_item_poll.isra.0+0x90/0x190
[   49.625014][ T7219]  ep_send_events_proc+0x113/0x590
[   49.630118][ T7219]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   49.635734][ T7219]  ep_scan_ready_list.constprop.0+0x189/0x500
[   49.641781][ T7219]  ? ep_loop_check_proc+0x2f0/0x2f0
[   49.646959][ T7219]  ep_poll+0xe3/0x900
[   49.651103][ T7219]  ? __fget+0xb8/0x1d0
[   49.655330][ T7219]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   49.660940][ T7219]  ? __fget_light+0xaf/0x190
[   49.665525][ T7219]  do_epoll_wait+0x162/0x180
[   49.670109][ T7219]  __x64_sys_epoll_pwait+0xcd/0x180
[   49.675320][ T7219]  do_syscall_64+0xcc/0x370
[   49.679820][ T7219]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   49.685704][ T7219] RIP: 0033:0x45b300
[   49.689580][ T7219] 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
[   49.709182][ T7219] RSP: 002b:000000c4202db860 EFLAGS: 00000246 ORIG_RAX: 0000000000000119
[   49.717624][ T7219] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000045b300
[   49.725584][ T7219] RDX: 0000000000000080 RSI: 000000c4202db8a0 RDI: 0000000000000004
[   49.733566][ T7219] RBP: 000000c4202dbea0 R08: 0000000000000000 R09: 0000000000000000
[   49.741522][ T7219] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008
[   49.749490][ T7219] R13: ffffffffffffffff R14: 0000000000000002 R15: ffffffffffffffff
[   49.758887][ T7219] Kernel Offset: disabled
[   49.763215][ T7219] Rebooting in 86400 seconds..