Warning: Permanently added '10.128.1.29' (ECDSA) to the list of known hosts.
2020/07/26 18:40:40 fuzzer started
2020/07/26 18:40:40 dialing manager at 10.128.0.105:35511
2020/07/26 18:40:40 syscalls: 3224
2020/07/26 18:40:40 code coverage: enabled
2020/07/26 18:40:40 comparison tracing: enabled
2020/07/26 18:40:40 extra coverage: enabled
2020/07/26 18:40:40 setuid sandbox: enabled
2020/07/26 18:40:40 namespace sandbox: enabled
2020/07/26 18:40:40 Android sandbox: /sys/fs/selinux/policy does not exist
2020/07/26 18:40:40 fault injection: enabled
2020/07/26 18:40:40 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/07/26 18:40:40 net packet injection: enabled
2020/07/26 18:40:40 net device setup: enabled
2020/07/26 18:40:40 concurrency sanitizer: enabled
2020/07/26 18:40:40 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/07/26 18:40:40 USB emulation: enabled
2020/07/26 18:40:40 suppressing KCSAN reports in functions: 'blk_mq_dispatch_rq_list' '__ext4_new_inode' '__xa_clear_mark' 'ext4_free_inode' 
syzkaller login: [   31.839972][ T8644] ==================================================================
[   31.848085][ T8644] BUG: KCSAN: data-race in do_epoll_wait / ep_poll_callback
[   31.855344][ T8644] 
[   31.857653][ T8644] write to 0xffff8881218247d0 of 8 bytes by interrupt on cpu 0:
[   31.865257][ T8644]  ep_poll_callback+0x29c/0x510
[   31.870081][ T8644]  __wake_up_common+0xbc/0x130
[   31.874828][ T8644]  __wake_up_sync_key+0x83/0xc0
[   31.879779][ T8644]  sock_def_readable+0x61/0xe0
[   31.884515][ T8644]  tcp_rcv_established+0x13c0/0x1520
[   31.889789][ T8644]  tcp_v4_do_rcv+0x25e/0x480
[   31.894358][ T8644]  tcp_v4_rcv+0x219b/0x2420
[   31.898836][ T8644]  ip_protocol_deliver_rcu+0x1f9/0x400
[   31.904268][ T8644]  ip_local_deliver+0x1d6/0x2a0
[   31.909091][ T8644]  ip_sublist_rcv+0x4d4/0x5a0
[   31.913738][ T8644]  ip_list_rcv+0x262/0x290
[   31.918150][ T8644]  __netif_receive_skb_list_core+0x34b/0x450
[   31.924103][ T8644]  __netif_receive_skb_list+0x298/0x310
[   31.929627][ T8644]  netif_receive_skb_list_internal+0xda/0x330
[   31.935663][ T8644]  napi_gro_receive+0x329/0x5a0
[   31.940488][ T8644]  receive_buf+0x7a4/0xcf0
[   31.944878][ T8644]  virtnet_poll+0x2fa/0x780
[   31.949354][ T8644]  napi_poll+0x178/0x4a0
[   31.953568][ T8644]  net_rx_action+0x1ba/0x530
[   31.958128][ T8644]  __do_softirq+0x198/0x360
[   31.962608][ T8644]  run_ksoftirqd+0x2f/0x60
[   31.966995][ T8644]  smpboot_thread_fn+0x347/0x530
[   31.971906][ T8644]  kthread+0x20d/0x230
[   31.975947][ T8644]  ret_from_fork+0x1f/0x30
[   31.980329][ T8644] 
[   31.982633][ T8644] read to 0xffff8881218247d0 of 8 bytes by task 8644 on cpu 1:
[   31.990158][ T8644]  do_epoll_wait+0x2e2/0x870
[   31.994722][ T8644]  __x64_sys_epoll_pwait+0x92/0x150
[   31.999899][ T8644]  do_syscall_64+0x51/0xb0
[   32.004297][ T8644]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   32.010257][ T8644] 
[   32.012560][ T8644] Reported by Kernel Concurrency Sanitizer on:
[   32.018688][ T8644] CPU: 1 PID: 8644 Comm: syz-fuzzer Not tainted 5.8.0-rc6-syzkaller #0
[   32.026893][ T8644] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   32.036924][ T8644] ==================================================================
[   32.044957][ T8644] Kernel panic - not syncing: panic_on_warn set ...
[   32.051518][ T8644] CPU: 1 PID: 8644 Comm: syz-fuzzer Not tainted 5.8.0-rc6-syzkaller #0
[   32.059722][ T8644] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   32.069746][ T8644] Call Trace:
[   32.073013][ T8644]  dump_stack+0x10f/0x19d
[   32.077320][ T8644]  panic+0x207/0x64a
[   32.081214][ T8644]  ? vprintk_emit+0x44a/0x4f0
[   32.085867][ T8644]  kcsan_report+0x684/0x690
[   32.090375][ T8644]  ? kcsan_setup_watchpoint+0x453/0x4d0
[   32.095892][ T8644]  ? do_epoll_wait+0x2e2/0x870
[   32.100627][ T8644]  ? __x64_sys_epoll_pwait+0x92/0x150
[   32.105968][ T8644]  ? do_syscall_64+0x51/0xb0
[   32.110533][ T8644]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   32.116576][ T8644]  ? ep_send_events_proc+0x4fd/0x620
[   32.121835][ T8644]  kcsan_setup_watchpoint+0x453/0x4d0
[   32.127185][ T8644]  do_epoll_wait+0x2e2/0x870
[   32.131749][ T8644]  ? debug_smp_processor_id+0x18/0x20
[   32.137112][ T8644]  __x64_sys_epoll_pwait+0x92/0x150
[   32.142282][ T8644]  do_syscall_64+0x51/0xb0
[   32.146674][ T8644]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   32.152537][ T8644] RIP: 0033:0x469240
[   32.156409][ T8644] 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
[   32.180089][ T8644] RSP: 002b:000000c0001617f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000119
[   32.188475][ T8644] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000469240
[   32.196420][ T8644] RDX: 0000000000000080 RSI: 000000c000161840 RDI: 0000000000000003
[   32.204362][ T8644] RBP: 000000c000161e40 R08: 0000000000000000 R09: 0000000000000000
[   32.212305][ T8644] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000003
[   32.220250][ T8644] R13: 000000c000157380 R14: 0000004d4143a1f7 R15: 0000000000000002
[   32.229475][ T8644] Kernel Offset: disabled
[   32.233781][ T8644] Rebooting in 86400 seconds..