Warning: Permanently added '10.128.0.2' (ECDSA) to the list of known hosts.
2019/10/30 20:48:38 fuzzer started
2019/10/30 20:48:40 dialing manager at 10.128.0.105:37477
2019/10/30 20:48:40 syscalls: 2540
2019/10/30 20:48:40 code coverage: enabled
2019/10/30 20:48:40 comparison tracing: enabled
2019/10/30 20:48:40 extra coverage: extra coverage is not supported by the kernel
2019/10/30 20:48:40 setuid sandbox: enabled
2019/10/30 20:48:40 namespace sandbox: enabled
2019/10/30 20:48:40 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/30 20:48:40 fault injection: enabled
2019/10/30 20:48:40 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/30 20:48:40 net packet injection: enabled
2019/10/30 20:48:40 net device setup: enabled
2019/10/30 20:48:40 concurrency sanitizer: enabled
2019/10/30 20:48:44 adding functions to KCSAN blacklist: 'tcp_add_backlog' 'tick_do_update_jiffies64' '__nf_ct_refresh_acct' '__nf_conntrack_find_get' '__hrtimer_run_queues' 'mod_timer' 'tomoyo_supervisor' 'do_nanosleep' '__tcp_select_window' 'pid_update_inode' 'find_next_bit' 
syzkaller login: [   56.498666][ T7321] ==================================================================
[   56.506810][ T7321] BUG: KCSAN: data-race in tcp_poll / tcp_queue_rcv
[   56.513516][ T7321] 
[   56.515850][ T7321] write to 0xffff888121dd0eb8 of 4 bytes by interrupt on cpu 0:
[   56.523486][ T7321]  tcp_queue_rcv+0xe9/0x380
[   56.527984][ T7321]  tcp_rcv_established+0xbf1/0xf50
[   56.533096][ T7321]  tcp_v4_do_rcv+0x381/0x4e0
[   56.537840][ T7321]  tcp_v4_rcv+0x19dc/0x1bb0
[   56.542366][ T7321]  ip_protocol_deliver_rcu+0x4d/0x420
[   56.547717][ T7321]  ip_local_deliver_finish+0x110/0x140
[   56.553152][ T7321]  ip_local_deliver+0x133/0x210
[   56.558038][ T7321]  ip_rcv_finish+0x121/0x160
[   56.562603][ T7321]  ip_rcv+0x18f/0x1a0
[   56.566566][ T7321]  __netif_receive_skb_one_core+0xa7/0xe0
[   56.572270][ T7321]  __netif_receive_skb+0x37/0xf0
[   56.577188][ T7321]  netif_receive_skb_internal+0x59/0x190
[   56.582809][ T7321]  napi_gro_receive+0x28f/0x330
[   56.587649][ T7321]  receive_buf+0x284/0x30b0
[   56.592239][ T7321] 
[   56.594578][ T7321] read to 0xffff888121dd0eb8 of 4 bytes by task 7321 on cpu 1:
[   56.602119][ T7321]  tcp_poll+0x204/0x6b0
[   56.606272][ T7321]  sock_poll+0xed/0x250
[   56.610405][ T7321]  ep_item_poll.isra.0+0x90/0x190
[   56.615420][ T7321]  ep_send_events_proc+0x113/0x590
[   56.620508][ T7321]  ep_scan_ready_list.constprop.0+0x189/0x500
[   56.626572][ T7321]  ep_poll+0xe3/0x900
[   56.630544][ T7321]  do_epoll_wait+0x162/0x180
[   56.635566][ T7321]  __x64_sys_epoll_pwait+0xcd/0x180
[   56.640744][ T7321]  do_syscall_64+0xcc/0x370
[   56.645236][ T7321]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   56.651111][ T7321] 
[   56.653413][ T7321] Reported by Kernel Concurrency Sanitizer on:
[   56.659565][ T7321] CPU: 1 PID: 7321 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   56.667003][ T7321] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   56.677040][ T7321] ==================================================================
[   56.685078][ T7321] Kernel panic - not syncing: panic_on_warn set ...
[   56.691648][ T7321] CPU: 1 PID: 7321 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   56.699087][ T7321] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   56.709141][ T7321] Call Trace:
[   56.712589][ T7321]  dump_stack+0xf5/0x159
[   56.716829][ T7321]  panic+0x210/0x640
[   56.720719][ T7321]  ? do_syscall_64+0xcc/0x370
[   56.725388][ T7321]  ? vprintk_func+0x8d/0x140
[   56.729961][ T7321]  kcsan_report.cold+0xc/0x10
[   56.734634][ T7321]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   56.740176][ T7321]  __tsan_read4+0x2c/0x30
[   56.744492][ T7321]  tcp_poll+0x204/0x6b0
[   56.748645][ T7321]  ? tcp_alloc_md5sig_pool+0x320/0x320
[   56.754086][ T7321]  sock_poll+0xed/0x250
[   56.758225][ T7321]  ? sock_read_iter+0x1e0/0x1e0
[   56.763053][ T7321]  ep_item_poll.isra.0+0x90/0x190
[   56.768060][ T7321]  ep_send_events_proc+0x113/0x590
[   56.773173][ T7321]  ? __schedule+0x319/0x640
[   56.777657][ T7321]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   56.783288][ T7321]  ep_scan_ready_list.constprop.0+0x189/0x500
[   56.789335][ T7321]  ? ep_loop_check_proc+0x2f0/0x2f0
[   56.794518][ T7321]  ep_poll+0xe3/0x900
[   56.798498][ T7321]  ? wake_up_q+0x70/0x70
[   56.802723][ T7321]  do_epoll_wait+0x162/0x180
[   56.807295][ T7321]  __x64_sys_epoll_pwait+0xcd/0x180
[   56.812741][ T7321]  do_syscall_64+0xcc/0x370
[   56.817242][ T7321]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   56.823131][ T7321] RIP: 0033:0x45b300
[   56.827016][ T7321] 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
[   56.846696][ T7321] RSP: 002b:000000c42022b860 EFLAGS: 00000246 ORIG_RAX: 0000000000000119
[   56.855306][ T7321] RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 000000000045b300
[   56.863270][ T7321] RDX: 0000000000000080 RSI: 000000c42022b8a0 RDI: 0000000000000004
[   56.871218][ T7321] RBP: 000000c42022bea0 R08: 0000000000000000 R09: 0000000000000000
[   56.879168][ T7321] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000004
[   56.887122][ T7321] R13: 000000c420083a30 R14: 0000000000000002 R15: ffffffffffffffff
[   56.896737][ T7321] Kernel Offset: disabled
[   56.901188][ T7321] Rebooting in 86400 seconds..