Warning: Permanently added '10.128.1.5' (ECDSA) to the list of known hosts.
2019/10/25 11:41:55 fuzzer started
2019/10/25 11:41:57 dialing manager at 10.128.0.105:33971
2019/10/25 11:41:57 syscalls: 2529
2019/10/25 11:41:57 code coverage: enabled
2019/10/25 11:41:57 comparison tracing: enabled
2019/10/25 11:41:57 extra coverage: extra coverage is not supported by the kernel
2019/10/25 11:41:57 setuid sandbox: enabled
2019/10/25 11:41:57 namespace sandbox: enabled
2019/10/25 11:41:57 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/25 11:41:57 fault injection: enabled
2019/10/25 11:41:57 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/25 11:41:57 net packet injection: enabled
2019/10/25 11:41:57 net device setup: enabled
2019/10/25 11:41:57 concurrency sanitizer: enabled
2019/10/25 11:42:00 adding functions to KCSAN blacklist: 'generic_write_end' 'pid_update_inode' 'ep_poll' '__hrtimer_run_queues' '__tcp_select_window' 'rcu_gp_fqs_check_wake' 'find_next_bit' 'tomoyo_supervisor' 'pipe_poll' 'echo_char' 'ktime_get_real_seconds' 'ext4_free_inodes_count' 'tcp_add_backlog' 'ext4_setattr' '__nf_ct_refresh_acct' 'generic_permission' 'run_timer_softirq' 
syzkaller login: [   57.392043][ T7233] ==================================================================
[   57.400165][ T7233] BUG: KCSAN: data-race in tcp_poll / tcp_queue_rcv
[   57.406732][ T7233] 
[   57.409055][ T7233] write to 0xffff88811cca0e78 of 4 bytes by interrupt on cpu 1:
[   57.416675][ T7233]  tcp_queue_rcv+0xe9/0x380
[   57.421170][ T7233]  tcp_rcv_established+0xbf1/0xf50
[   57.426278][ T7233]  tcp_v4_do_rcv+0x381/0x4e0
[   57.430858][ T7233]  tcp_v4_rcv+0x19dc/0x1bb0
[   57.435352][ T7233]  ip_protocol_deliver_rcu+0x4d/0x420
[   57.440714][ T7233]  ip_local_deliver_finish+0x110/0x140
[   57.446165][ T7233]  ip_local_deliver+0x133/0x210
[   57.451006][ T7233]  ip_rcv_finish+0x121/0x160
[   57.455593][ T7233]  ip_rcv+0x18f/0x1a0
[   57.459615][ T7233]  __netif_receive_skb_one_core+0xa7/0xe0
[   57.465309][ T7233]  __netif_receive_skb+0x37/0xf0
[   57.470223][ T7233]  netif_receive_skb_internal+0x59/0x190
[   57.475828][ T7233]  napi_gro_receive+0x28f/0x330
[   57.480655][ T7233]  receive_buf+0x284/0x30b0
[   57.485124][ T7233] 
[   57.487429][ T7233] read to 0xffff88811cca0e78 of 4 bytes by task 7233 on cpu 0:
[   57.494952][ T7233]  tcp_poll+0x204/0x6b0
[   57.499094][ T7233]  sock_poll+0xed/0x250
[   57.503232][ T7233]  ep_item_poll.isra.0+0x90/0x190
[   57.508287][ T7233]  ep_send_events_proc+0x113/0x590
[   57.513375][ T7233]  ep_scan_ready_list.constprop.0+0x189/0x500
[   57.519414][ T7233]  ep_poll+0xe3/0x900
[   57.523369][ T7233]  do_epoll_wait+0x162/0x180
[   57.527944][ T7233]  __x64_sys_epoll_pwait+0xcd/0x180
[   57.533117][ T7233]  do_syscall_64+0xcc/0x370
[   57.537594][ T7233]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   57.543451][ T7233] 
[   57.545752][ T7233] Reported by Kernel Concurrency Sanitizer on:
[   57.551880][ T7233] CPU: 0 PID: 7233 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   57.559326][ T7233] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   57.569362][ T7233] ==================================================================
[   57.577406][ T7233] Kernel panic - not syncing: panic_on_warn set ...
[   57.583966][ T7233] CPU: 0 PID: 7233 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   57.591403][ T7233] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   57.601427][ T7233] Call Trace:
[   57.604704][ T7233]  dump_stack+0xf5/0x159
[   57.608932][ T7233]  panic+0x210/0x640
[   57.612806][ T7233]  ? do_syscall_64+0xcc/0x370
[   57.617459][ T7233]  ? vprintk_func+0x8d/0x140
[   57.622027][ T7233]  kcsan_report.cold+0xc/0x10
[   57.626680][ T7233]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   57.632200][ T7233]  __tsan_read4+0x2c/0x30
[   57.636522][ T7233]  tcp_poll+0x204/0x6b0
[   57.640657][ T7233]  ? tcp_alloc_md5sig_pool+0x320/0x320
[   57.646104][ T7233]  sock_poll+0xed/0x250
[   57.650247][ T7233]  ? sock_read_iter+0x1e0/0x1e0
[   57.655083][ T7233]  ep_item_poll.isra.0+0x90/0x190
[   57.660085][ T7233]  ep_send_events_proc+0x113/0x590
[   57.665187][ T7233]  ? __schedule+0x319/0x640
[   57.669665][ T7233]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   57.675276][ T7233]  ep_scan_ready_list.constprop.0+0x189/0x500
[   57.681324][ T7233]  ? ep_loop_check_proc+0x2f0/0x2f0
[   57.686514][ T7233]  ep_poll+0xe3/0x900
[   57.690474][ T7233]  ? wake_up_q+0x70/0x70
[   57.694706][ T7233]  do_epoll_wait+0x162/0x180
[   57.699273][ T7233]  __x64_sys_epoll_pwait+0xcd/0x180
[   57.704449][ T7233]  do_syscall_64+0xcc/0x370
[   57.708932][ T7233]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   57.714795][ T7233] RIP: 0033:0x45b300
[   57.718705][ T7233] 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
[   57.738321][ T7233] RSP: 002b:000000c42014b860 EFLAGS: 00000246 ORIG_RAX: 0000000000000119
[   57.746732][ T7233] RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 000000000045b300
[   57.754677][ T7233] RDX: 0000000000000080 RSI: 000000c42014b8a0 RDI: 0000000000000004
[   57.762632][ T7233] RBP: 000000c42014bea0 R08: 0000000000000000 R09: 0000000000000000
[   57.770586][ T7233] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000008
[   57.778532][ T7233] R13: ffffffffffffffff R14: 0000000000000008 R15: ffffffffffffffff
[   57.787772][ T7233] Kernel Offset: disabled
[   57.792088][ T7233] Rebooting in 86400 seconds..