Warning: Permanently added '10.128.0.38' (ECDSA) to the list of known hosts.
2020/07/21 00:53:48 fuzzer started
2020/07/21 00:53:49 dialing manager at 10.128.0.105:40171
2020/07/21 00:53:49 syscalls: 3189
2020/07/21 00:53:49 code coverage: enabled
2020/07/21 00:53:49 comparison tracing: enabled
2020/07/21 00:53:49 extra coverage: enabled
2020/07/21 00:53:49 setuid sandbox: enabled
2020/07/21 00:53:49 namespace sandbox: enabled
2020/07/21 00:53:49 Android sandbox: /sys/fs/selinux/policy does not exist
2020/07/21 00:53:49 fault injection: enabled
2020/07/21 00:53:49 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/07/21 00:53:49 net packet injection: enabled
2020/07/21 00:53:49 net device setup: enabled
2020/07/21 00:53:49 concurrency sanitizer: enabled
2020/07/21 00:53:49 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/07/21 00:53:49 USB emulation: enabled
2020/07/21 00:53:50 suppressing KCSAN reports in functions: 'ext4_free_inode' 'ext4_writepages' 'blk_mq_dispatch_rq_list' 'ext4_free_inodes_count' 'generic_write_end' 
syzkaller login: [   33.736112][ T8631] ==================================================================
[   33.744195][ T8631] BUG: KCSAN: data-race in do_epoll_wait / ep_poll_callback
[   33.751439][ T8631] 
[   33.753740][ T8631] write to 0xffff888120ed3410 of 8 bytes by interrupt on cpu 1:
[   33.761335][ T8631]  ep_poll_callback+0x29c/0x510
[   33.766153][ T8631]  __wake_up_common+0xbc/0x130
[   33.770879][ T8631]  __wake_up_sync_key+0x83/0xc0
[   33.775693][ T8631]  sock_def_readable+0x61/0xe0
[   33.780434][ T8631]  tcp_rcv_established+0x13c0/0x1520
[   33.785684][ T8631]  tcp_v4_do_rcv+0x25e/0x480
[   33.790241][ T8631]  tcp_v4_rcv+0x219b/0x2420
[   33.794714][ T8631]  ip_protocol_deliver_rcu+0x1f9/0x400
[   33.800136][ T8631]  ip_local_deliver+0x1d6/0x2a0
[   33.804951][ T8631]  ip_sublist_rcv+0x4d4/0x5a0
[   33.809592][ T8631]  ip_list_rcv+0x262/0x290
[   33.813974][ T8631]  __netif_receive_skb_list_core+0x34b/0x450
[   33.819918][ T8631]  __netif_receive_skb_list+0x298/0x310
[   33.825431][ T8631]  netif_receive_skb_list_internal+0xda/0x330
[   33.831459][ T8631]  napi_gro_receive+0x329/0x5a0
[   33.836274][ T8631]  receive_buf+0x7a4/0xcf0
[   33.840652][ T8631]  virtnet_poll+0x2fa/0x780
[   33.845164][ T8631]  napi_poll+0x178/0x4a0
[   33.849372][ T8631]  net_rx_action+0x1ba/0x530
[   33.853928][ T8631]  __do_softirq+0x198/0x360
[   33.858418][ T8631]  run_ksoftirqd+0x2f/0x60
[   33.862799][ T8631]  smpboot_thread_fn+0x347/0x530
[   33.867700][ T8631]  kthread+0x20d/0x230
[   33.871828][ T8631]  ret_from_fork+0x1f/0x30
[   33.876205][ T8631] 
[   33.878505][ T8631] read to 0xffff888120ed3410 of 8 bytes by task 8631 on cpu 0:
[   33.886010][ T8631]  do_epoll_wait+0x2e2/0x870
[   33.890563][ T8631]  __x64_sys_epoll_pwait+0x92/0x150
[   33.895725][ T8631]  do_syscall_64+0x51/0xb0
[   33.900105][ T8631]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   33.905967][ T8631] 
[   33.908260][ T8631] Reported by Kernel Concurrency Sanitizer on:
[   33.914380][ T8631] CPU: 0 PID: 8631 Comm: syz-fuzzer Not tainted 5.8.0-rc6-syzkaller #0
[   33.922578][ T8631] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   33.932598][ T8631] ==================================================================
[   33.940621][ T8631] Kernel panic - not syncing: panic_on_warn set ...
[   33.947172][ T8631] CPU: 0 PID: 8631 Comm: syz-fuzzer Not tainted 5.8.0-rc6-syzkaller #0
[   33.955370][ T8631] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   33.965391][ T8631] Call Trace:
[   33.968647][ T8631]  dump_stack+0x10f/0x19d
[   33.972942][ T8631]  panic+0x207/0x64a
[   33.976805][ T8631]  ? vprintk_emit+0x44a/0x4f0
[   33.981450][ T8631]  kcsan_report+0x684/0x690
[   33.985959][ T8631]  ? kcsan_setup_watchpoint+0x453/0x4d0
[   33.991469][ T8631]  ? do_epoll_wait+0x2e2/0x870
[   33.996199][ T8631]  ? __x64_sys_epoll_pwait+0x92/0x150
[   34.001537][ T8631]  ? do_syscall_64+0x51/0xb0
[   34.006130][ T8631]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   34.012167][ T8631]  ? ep_send_events_proc+0x4fd/0x620
[   34.017419][ T8631]  kcsan_setup_watchpoint+0x453/0x4d0
[   34.022759][ T8631]  do_epoll_wait+0x2e2/0x870
[   34.027317][ T8631]  ? debug_smp_processor_id+0x18/0x20
[   34.032654][ T8631]  __x64_sys_epoll_pwait+0x92/0x150
[   34.037848][ T8631]  do_syscall_64+0x51/0xb0
[   34.042230][ T8631]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   34.048086][ T8631] RIP: 0033:0x469240
[   34.051944][ T8631] Code: Bad RIP value.
[   34.055973][ T8631] RSP: 002b:000000c0001017f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000119
[   34.064350][ T8631] RAX: ffffffffffffffda RBX: 0000000000000203 RCX: 0000000000469240
[   34.072288][ T8631] RDX: 0000000000000080 RSI: 000000c000101840 RDI: 0000000000000003
[   34.080225][ T8631] RBP: 000000c000101e40 R08: 0000000000000000 R09: 0000000000000000
[   34.088168][ T8631] R10: 0000000000000203 R11: 0000000000000246 R12: 0000000000000003
[   34.096105][ T8631] R13: 000000c000001800 R14: 0000000000000002 R15: 0000000000000002
[   34.105071][ T8631] Kernel Offset: disabled
[   34.109375][ T8631] Rebooting in 86400 seconds..