Warning: Permanently added '10.128.0.187' (ECDSA) to the list of known hosts.
2020/05/26 17:15:58 fuzzer started
2020/05/26 17:15:58 dialing manager at 10.128.0.105:37123
2020/05/26 17:15:58 syscalls: 3055
2020/05/26 17:15:58 code coverage: enabled
2020/05/26 17:15:58 comparison tracing: enabled
2020/05/26 17:15:58 extra coverage: enabled
2020/05/26 17:15:58 setuid sandbox: enabled
2020/05/26 17:15:58 namespace sandbox: enabled
2020/05/26 17:15:58 Android sandbox: /sys/fs/selinux/policy does not exist
2020/05/26 17:15:58 fault injection: enabled
2020/05/26 17:15:58 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/05/26 17:15:58 net packet injection: enabled
2020/05/26 17:15:58 net device setup: enabled
2020/05/26 17:15:58 concurrency sanitizer: enabled
2020/05/26 17:15:58 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/05/26 17:15:58 USB emulation: enabled
2020/05/26 17:15:59 adding functions to KCSAN blacklist: 'blk_mq_dispatch_rq_list' 'ext4_mark_iloc_dirty' 'page_counter_charge' 'find_get_pages_range_tag' 'copy_process' '__ext4_new_inode' 'mod_timer' 
syzkaller login: [   52.983653][ T8909] ==================================================================
[   52.991794][ T8909] BUG: KCSAN: data-race in ep_poll / ep_poll_callback
[   52.998541][ T8909] 
[   53.000871][ T8909] write to 0xffff88812aec9290 of 8 bytes by interrupt on cpu 1:
[   53.008499][ T8909]  ep_poll_callback+0x5f2/0x6c0
[   53.013340][ T8909]  __wake_up_common+0x76/0x180
[   53.018098][ T8909]  __wake_up_common_lock+0x77/0xb0
[   53.023246][ T8909]  sock_def_readable+0x9d/0x130
[   53.028119][ T8909]  tcp_data_ready+0x76/0xc0
[   53.032600][ T8909]  tcp_rcv_established+0xcb8/0xee0
[   53.037697][ T8909]  tcp_v4_do_rcv+0x396/0x4f0
[   53.042276][ T8909]  tcp_v4_rcv+0x1c55/0x1e10
[   53.046754][ T8909]  ip_protocol_deliver_rcu+0x4b/0x410
[   53.052103][ T8909]  ip_local_deliver_finish+0xf3/0x120
[   53.057483][ T8909]  ip_local_deliver+0x135/0x220
[   53.062307][ T8909]  ip_sublist_rcv_finish+0xf0/0x140
[   53.067480][ T8909]  ip_sublist_rcv+0x3f8/0x530
[   53.072132][ T8909]  ip_list_rcv+0x2f3/0x321
[   53.076528][ T8909]  __netif_receive_skb_list_core+0x368/0x5c0
[   53.082500][ T8909]  netif_receive_skb_list_internal+0x5c7/0x810
[   53.088631][ T8909]  gro_normal_list.part.0+0x37/0xa0
[   53.093821][ T8909]  gro_normal_one+0x14c/0x160
[   53.098491][ T8909]  napi_gro_receive+0x27d/0x2f0
[   53.103339][ T8909]  receive_buf+0x24c/0x3420
[   53.107819][ T8909]  virtnet_poll+0x343/0x790
[   53.112398][ T8909]  net_rx_action+0x3ad/0xac0
[   53.116967][ T8909]  __do_softirq+0x118/0x34a
[   53.121463][ T8909]  run_ksoftirqd+0x41/0x60
[   53.125854][ T8909]  smpboot_thread_fn+0x374/0x4a0
[   53.130778][ T8909]  kthread+0x203/0x230
[   53.134834][ T8909]  ret_from_fork+0x1f/0x30
[   53.139216][ T8909] 
[   53.141521][ T8909] read to 0xffff88812aec9290 of 8 bytes by task 8909 on cpu 0:
[   53.149036][ T8909]  ep_poll+0x473/0x910
[   53.153081][ T8909]  do_epoll_wait+0x15a/0x180
[   53.157645][ T8909]  __x64_sys_epoll_pwait+0xc6/0x170
[   53.162836][ T8909]  do_syscall_64+0xc7/0x3b0
[   53.167315][ T8909]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   53.173173][ T8909] 
[   53.175472][ T8909] Reported by Kernel Concurrency Sanitizer on:
[   53.181601][ T8909] CPU: 0 PID: 8909 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0
[   53.189807][ T8909] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   53.199834][ T8909] ==================================================================
[   53.207880][ T8909] Kernel panic - not syncing: panic_on_warn set ...
[   53.214441][ T8909] CPU: 0 PID: 8909 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0
[   53.222660][ T8909] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   53.232705][ T8909] Call Trace:
[   53.235976][ T8909]  dump_stack+0x11d/0x187
[   53.240299][ T8909]  panic+0x210/0x640
[   53.244184][ T8909]  ? vprintk_func+0x89/0x13a
[   53.248753][ T8909]  kcsan_report.cold+0xc/0x1a
[   53.253409][ T8909]  kcsan_setup_watchpoint+0x3fb/0x440
[   53.258756][ T8909]  ep_poll+0x473/0x910
[   53.262806][ T8909]  ? __fget_light+0xc0/0x1a0
[   53.267372][ T8909]  do_epoll_wait+0x15a/0x180
[   53.271937][ T8909]  ? fput+0x20/0x30
[   53.275719][ T8909]  __x64_sys_epoll_pwait+0xc6/0x170
[   53.280909][ T8909]  do_syscall_64+0xc7/0x3b0
[   53.285387][ T8909]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   53.291250][ T8909] RIP: 0033:0x45b300
[   53.295127][ T8909] 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
[   53.314715][ T8909] RSP: 002b:000000c420141860 EFLAGS: 00000246 ORIG_RAX: 0000000000000119
[   53.323098][ T8909] RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 000000000045b300
[   53.331044][ T8909] RDX: 0000000000000080 RSI: 000000c4201418a0 RDI: 0000000000000004
[   53.338989][ T8909] RBP: 000000c420141ea0 R08: 0000000000000000 R09: 0000000000000000
[   53.346937][ T8909] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000008
[   53.354885][ T8909] R13: ffffffffffffffff R14: 0000000000000002 R15: ffffffffffffffff
[   53.364067][ T8909] Kernel Offset: disabled
[   53.368419][ T8909] Rebooting in 86400 seconds..