Warning: Permanently added '10.128.0.231' (ECDSA) to the list of known hosts.
2019/12/02 18:04:18 fuzzer started
2019/12/02 18:04:19 dialing manager at 10.128.0.105:39819
2019/12/02 18:04:19 syscalls: 2682
2019/12/02 18:04:19 code coverage: enabled
2019/12/02 18:04:19 comparison tracing: enabled
2019/12/02 18:04:19 extra coverage: extra coverage is not supported by the kernel
2019/12/02 18:04:19 setuid sandbox: enabled
2019/12/02 18:04:19 namespace sandbox: enabled
2019/12/02 18:04:19 Android sandbox: /sys/fs/selinux/policy does not exist
2019/12/02 18:04:19 fault injection: enabled
2019/12/02 18:04:19 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/12/02 18:04:19 net packet injection: enabled
2019/12/02 18:04:19 net device setup: enabled
2019/12/02 18:04:19 concurrency sanitizer: enabled
2019/12/02 18:04:19 devlink PCI setup: PCI device 0000:00:10.0 is not available
2019/12/02 18:04:20 adding functions to KCSAN blacklist: '__hrtimer_run_queues' 'pipe_poll' 'tick_sched_do_timer' 'copy_process' 'pid_update_inode' 
syzkaller login: [   57.947270][ T7533] ==================================================================
[   57.955528][ T7533] BUG: KCSAN: data-race in tcp_add_backlog / tcp_recvmsg
[   57.962672][ T7533] 
[   57.967332][ T7533] write to 0xffff8881261849f8 of 8 bytes by interrupt on cpu 1:
[   57.976327][ T7533]  tcp_add_backlog+0x476/0xce0
[   57.981075][ T7533]  tcp_v4_rcv+0x1a70/0x1bd0
[   57.985665][ T7533]  ip_protocol_deliver_rcu+0x4d/0x420
[   57.991551][ T7533]  ip_local_deliver_finish+0x110/0x140
[   57.997612][ T7533]  ip_local_deliver+0x133/0x210
[   58.002550][ T7533]  ip_rcv_finish+0x121/0x160
[   58.007758][ T7533]  ip_rcv+0x18f/0x1a0
[   58.011725][ T7533]  __netif_receive_skb_one_core+0xa7/0xe0
[   58.017533][ T7533]  __netif_receive_skb+0x37/0xf0
[   58.022466][ T7533]  netif_receive_skb_internal+0x59/0x190
[   58.028178][ T7533]  napi_gro_receive+0x28f/0x330
[   58.033032][ T7533]  receive_buf+0x284/0x30b0
[   58.037520][ T7533]  virtnet_poll+0x436/0x7d0
[   58.042177][ T7533]  net_rx_action+0x3ae/0xa90
[   58.046759][ T7533]  __do_softirq+0x115/0x33f
[   58.051241][ T7533]  run_ksoftirqd+0x46/0x60
[   58.055656][ T7533]  smpboot_thread_fn+0x37d/0x4a0
[   58.060568][ T7533]  kthread+0x1d4/0x200
[   58.065957][ T7533]  ret_from_fork+0x1f/0x30
[   58.071973][ T7533] 
[   58.077025][ T7533] read to 0xffff8881261849f8 of 8 bytes by task 7533 on cpu 0:
[   58.084694][ T7533]  tcp_recvmsg+0x46e/0x1b40
[   58.089194][ T7533]  inet_recvmsg+0xbb/0x250
[   58.093610][ T7533]  sock_recvmsg+0x92/0xb0
[   58.098638][ T7533]  sock_read_iter+0x15f/0x1e0
[   58.103324][ T7533]  new_sync_read+0x389/0x4f0
[   58.108390][ T7533]  __vfs_read+0xb1/0xc0
[   58.112556][ T7533]  vfs_read+0x143/0x2c0
[   58.119585][ T7533]  ksys_read+0xd5/0x1b0
[   58.123721][ T7533]  __x64_sys_read+0x4c/0x60
[   58.128220][ T7533]  do_syscall_64+0xcc/0x370
[   58.132733][ T7533]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   58.138620][ T7533] 
[   58.140932][ T7533] Reported by Kernel Concurrency Sanitizer on:
[   58.147069][ T7533] CPU: 0 PID: 7533 Comm: syz-fuzzer Not tainted 5.4.0-syzkaller #0
[   58.154949][ T7533] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   58.167608][ T7533] ==================================================================
[   58.177858][ T7533] Kernel panic - not syncing: panic_on_warn set ...
[   58.184697][ T7533] CPU: 0 PID: 7533 Comm: syz-fuzzer Not tainted 5.4.0-syzkaller #0
[   58.192564][ T7533] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   58.202622][ T7533] Call Trace:
[   58.205907][ T7533]  dump_stack+0x11d/0x181
[   58.210221][ T7533]  panic+0x210/0x640
[   58.214098][ T7533]  ? vprintk_func+0x8d/0x140
[   58.218677][ T7533]  kcsan_report.cold+0xc/0xd
[   58.223266][ T7533]  kcsan_setup_watchpoint+0x3fe/0x460
[   58.228624][ T7533]  __tsan_read8+0xc6/0x100
[   58.233024][ T7533]  tcp_recvmsg+0x46e/0x1b40
[   58.237520][ T7533]  inet_recvmsg+0xbb/0x250
[   58.241930][ T7533]  ? apparmor_socket_recvmsg+0x3b/0x50
[   58.247718][ T7533]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   58.253941][ T7533]  ? security_socket_recvmsg+0x92/0xb0
[   58.259401][ T7533]  ? inet_sendpage+0x100/0x100
[   58.264164][ T7533]  sock_recvmsg+0x92/0xb0
[   58.268475][ T7533]  sock_read_iter+0x15f/0x1e0
[   58.273584][ T7533]  new_sync_read+0x389/0x4f0
[   58.278157][ T7533]  __vfs_read+0xb1/0xc0
[   58.282306][ T7533]  vfs_read+0x143/0x2c0
[   58.286444][ T7533]  ksys_read+0xd5/0x1b0
[   58.290579][ T7533]  __x64_sys_read+0x4c/0x60
[   58.295064][ T7533]  do_syscall_64+0xcc/0x370
[   58.299551][ T7533]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   58.305768][ T7533] RIP: 0033:0x47c530
[   58.309646][ T7533] Code: 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 49 c7 c2 00 00 00 00 49 c7 c0 00 00 00 00 49 c7 c1 00 00 00 00 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30
[   58.329248][ T7533] RSP: 002b:000000c4204f17d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   58.337638][ T7533] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   58.345598][ T7533] RDX: 0000000000001000 RSI: 000000c42015e000 RDI: 0000000000000003
[   58.353547][ T7533] RBP: 000000c4204f1830 R08: 0000000000000000 R09: 0000000000000000
[   58.361511][ T7533] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000004
[   58.369462][ T7533] R13: ffffffffffffffff R14: 0000000000000004 R15: ffffffffffffffff
[   58.381109][ T7533] Kernel Offset: disabled
[   58.385453][ T7533] Rebooting in 86400 seconds..