Warning: Permanently added '10.128.0.178' (ECDSA) to the list of known hosts.
2019/10/22 07:54:31 fuzzer started
2019/10/22 07:54:33 dialing manager at 10.128.0.105:37053
2019/10/22 07:54:33 syscalls: 2524
2019/10/22 07:54:33 code coverage: enabled
2019/10/22 07:54:33 comparison tracing: enabled
2019/10/22 07:54:33 extra coverage: extra coverage is not supported by the kernel
2019/10/22 07:54:33 setuid sandbox: enabled
2019/10/22 07:54:33 namespace sandbox: enabled
2019/10/22 07:54:33 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/22 07:54:33 fault injection: enabled
2019/10/22 07:54:33 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/22 07:54:33 net packet injection: enabled
2019/10/22 07:54:33 net device setup: enabled
2019/10/22 07:54:33 concurrency sanitizer: enabled
syzkaller login: [   54.052360][ T7259] ==================================================================
[   54.061283][ T7259] BUG: KCSAN: data-race in tcp_poll / tcp_queue_rcv
[   54.067856][ T7259] 
[   54.070184][ T7259] write to 0xffff88811f191778 of 4 bytes by interrupt on cpu 0:
[   54.077814][ T7259]  tcp_queue_rcv+0xe9/0x380
[   54.082312][ T7259]  tcp_data_queue+0x7bb/0x20b0
[   54.087071][ T7259]  tcp_rcv_established+0x517/0xf50
[   54.092184][ T7259]  tcp_v4_do_rcv+0x381/0x4e0
[   54.096770][ T7259]  tcp_v4_rcv+0x19dc/0x1bb0
[   54.101274][ T7259]  ip_protocol_deliver_rcu+0x4d/0x420
[   54.106638][ T7259]  ip_local_deliver_finish+0x110/0x140
[   54.112089][ T7259]  ip_local_deliver+0x133/0x210
[   54.116941][ T7259]  ip_rcv_finish+0x121/0x160
[   54.121526][ T7259]  ip_rcv+0x18f/0x1a0
[   54.125505][ T7259]  __netif_receive_skb_one_core+0xa7/0xe0
[   54.131218][ T7259]  __netif_receive_skb+0x37/0xf0
[   54.136150][ T7259]  netif_receive_skb_internal+0x59/0x190
[   54.141780][ T7259]  napi_gro_receive+0x28f/0x330
[   54.146626][ T7259] 
[   54.148954][ T7259] read to 0xffff88811f191778 of 4 bytes by task 7259 on cpu 1:
[   54.156490][ T7259]  tcp_poll+0x204/0x6b0
[   54.160634][ T7259]  sock_poll+0xed/0x250
[   54.164781][ T7259]  ep_item_poll.isra.0+0x90/0x190
[   54.169787][ T7259]  ep_send_events_proc+0x113/0x590
[   54.174887][ T7259]  ep_scan_ready_list.constprop.0+0x189/0x500
[   54.180945][ T7259]  ep_poll+0xe3/0x900
[   54.184926][ T7259]  do_epoll_wait+0x162/0x180
[   54.189524][ T7259]  __x64_sys_epoll_pwait+0xcd/0x180
[   54.194712][ T7259]  do_syscall_64+0xcc/0x370
[   54.199199][ T7259]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   54.205154][ T7259] 
[   54.207472][ T7259] Reported by Kernel Concurrency Sanitizer on:
[   54.213615][ T7259] CPU: 1 PID: 7259 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   54.221051][ T7259] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   54.231115][ T7259] ==================================================================
[   54.239167][ T7259] Kernel panic - not syncing: panic_on_warn set ...
[   54.245742][ T7259] CPU: 1 PID: 7259 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   54.253182][ T7259] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   54.263218][ T7259] Call Trace:
[   54.266502][ T7259]  dump_stack+0xf5/0x159
[   54.270737][ T7259]  panic+0x210/0x640
[   54.274624][ T7259]  ? do_syscall_64+0xcc/0x370
[   54.279279][ T7259]  ? vprintk_func+0x8d/0x140
[   54.283857][ T7259]  kcsan_report.cold+0xc/0x10
[   54.288515][ T7259]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   54.294037][ T7259]  __tsan_read4+0x2c/0x30
[   54.298395][ T7259]  tcp_poll+0x204/0x6b0
[   54.302535][ T7259]  ? tcp_alloc_md5sig_pool+0x320/0x320
[   54.307974][ T7259]  sock_poll+0xed/0x250
[   54.312146][ T7259]  ? sock_read_iter+0x1e0/0x1e0
[   54.316991][ T7259]  ep_item_poll.isra.0+0x90/0x190
[   54.321997][ T7259]  ep_send_events_proc+0x113/0x590
[   54.327086][ T7259]  ? __schedule+0x319/0x640
[   54.331566][ T7259]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   54.337183][ T7259]  ep_scan_ready_list.constprop.0+0x189/0x500
[   54.343235][ T7259]  ? ep_loop_check_proc+0x2f0/0x2f0
[   54.348422][ T7259]  ep_poll+0xe3/0x900
[   54.352421][ T7259]  ? wake_up_q+0x70/0x70
[   54.356653][ T7259]  do_epoll_wait+0x162/0x180
[   54.361237][ T7259]  __x64_sys_epoll_pwait+0xcd/0x180
[   54.366434][ T7259]  do_syscall_64+0xcc/0x370
[   54.370932][ T7259]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   54.376800][ T7259] RIP: 0033:0x45b300
[   54.380692][ T7259] 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
[   54.401262][ T7259] RSP: 002b:000000c42004b860 EFLAGS: 00000246 ORIG_RAX: 0000000000000119
[   54.409662][ T7259] RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 000000000045b300
[   54.417613][ T7259] RDX: 0000000000000080 RSI: 000000c42004b8a0 RDI: 0000000000000004
[   54.425588][ T7259] RBP: 000000c42004bea0 R08: 0000000000000000 R09: 000000c420000900
[   54.433967][ T7259] R10: 00000000ffffffff R11: 0000000000000246 R12: 00000000000000a0
[   54.441917][ T7259] R13: 00000000000000ff R14: 00007f3bbfd1a6c8 R15: 0000000000000004
[   54.451314][ T7259] Kernel Offset: disabled
[   54.455646][ T7259] Rebooting in 86400 seconds..