Warning: Permanently added '10.128.0.195' (ECDSA) to the list of known hosts.
2019/12/09 13:40:20 fuzzer started
2019/12/09 13:40:21 dialing manager at 10.128.0.105:38603
2019/12/09 13:40:22 syscalls: 2689
2019/12/09 13:40:22 code coverage: enabled
2019/12/09 13:40:22 comparison tracing: enabled
2019/12/09 13:40:22 extra coverage: extra coverage is not supported by the kernel
2019/12/09 13:40:22 setuid sandbox: enabled
2019/12/09 13:40:22 namespace sandbox: enabled
2019/12/09 13:40:22 Android sandbox: /sys/fs/selinux/policy does not exist
2019/12/09 13:40:22 fault injection: enabled
2019/12/09 13:40:22 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/12/09 13:40:22 net packet injection: enabled
2019/12/09 13:40:22 net device setup: enabled
2019/12/09 13:40:22 concurrency sanitizer: enabled
2019/12/09 13:40:22 devlink PCI setup: PCI device 0000:00:10.0 is not available
2019/12/09 13:40:23 adding functions to KCSAN blacklist: 'xas_clear_mark' 'add_timer' 'common_perm_cond' 'find_next_bit' 'tomoyo_supervisor' '__hrtimer_run_queues' 'dd_has_work' 
syzkaller login: [   67.415497][ T7519] ==================================================================
[   67.423652][ T7519] BUG: KCSAN: data-race in tcp_add_backlog / tcp_recvmsg
[   67.430788][ T7519] 
[   67.433121][ T7519] write to 0xffff888126b9d338 of 8 bytes by interrupt on cpu 1:
[   67.440744][ T7519]  tcp_add_backlog+0x476/0xce0
[   67.445491][ T7519]  tcp_v4_rcv+0x1a70/0x1bd0
[   67.449980][ T7519]  ip_protocol_deliver_rcu+0x4d/0x420
[   67.455335][ T7519]  ip_local_deliver_finish+0x110/0x140
[   67.460773][ T7519]  ip_local_deliver+0x133/0x210
[   67.465604][ T7519]  ip_rcv_finish+0x121/0x160
[   67.470181][ T7519]  ip_rcv+0x18f/0x1a0
[   67.474151][ T7519]  __netif_receive_skb_one_core+0xa7/0xe0
[   67.479860][ T7519]  __netif_receive_skb+0x37/0xf0
[   67.484778][ T7519]  netif_receive_skb_internal+0x59/0x190
[   67.490390][ T7519]  napi_gro_receive+0x28f/0x330
[   67.495221][ T7519]  receive_buf+0x284/0x30b0
[   67.499703][ T7519]  virtnet_poll+0x436/0x7d0
[   67.504180][ T7519]  net_rx_action+0x3ae/0xa90
[   67.508747][ T7519]  __do_softirq+0x115/0x33f
[   67.513247][ T7519]  run_ksoftirqd+0x46/0x60
[   67.517645][ T7519]  smpboot_thread_fn+0x37d/0x4a0
[   67.522584][ T7519]  kthread+0x1d4/0x200
[   67.526630][ T7519]  ret_from_fork+0x1f/0x30
[   67.531031][ T7519] 
[   67.533340][ T7519] read to 0xffff888126b9d338 of 8 bytes by task 7519 on cpu 0:
[   67.540870][ T7519]  tcp_recvmsg+0x46e/0x1b40
[   67.545363][ T7519]  inet_recvmsg+0xbb/0x250
[   67.549765][ T7519]  sock_recvmsg+0x92/0xb0
[   67.554075][ T7519]  sock_read_iter+0x15f/0x1e0
[   67.558741][ T7519]  new_sync_read+0x389/0x4f0
[   67.563345][ T7519]  __vfs_read+0xb1/0xc0
[   67.567475][ T7519]  vfs_read+0x143/0x2c0
[   67.571609][ T7519]  ksys_read+0xd5/0x1b0
[   67.575754][ T7519]  __x64_sys_read+0x4c/0x60
[   67.580234][ T7519]  do_syscall_64+0xcc/0x370
[   67.584715][ T7519]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   67.590574][ T7519] 
[   67.592873][ T7519] Reported by Kernel Concurrency Sanitizer on:
[   67.599025][ T7519] CPU: 0 PID: 7519 Comm: syz-fuzzer Not tainted 5.4.0-syzkaller #0
[   67.606886][ T7519] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   67.616918][ T7519] ==================================================================
[   67.624952][ T7519] Kernel panic - not syncing: panic_on_warn set ...
[   67.631517][ T7519] CPU: 0 PID: 7519 Comm: syz-fuzzer Not tainted 5.4.0-syzkaller #0
[   67.639391][ T7519] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   67.649422][ T7519] Call Trace:
[   67.652695][ T7519]  dump_stack+0x11d/0x181
[   67.657020][ T7519]  panic+0x210/0x640
[   67.660895][ T7519]  ? vprintk_func+0x8d/0x140
[   67.665466][ T7519]  kcsan_report.cold+0xc/0xd
[   67.670050][ T7519]  kcsan_setup_watchpoint+0x3fe/0x460
[   67.675426][ T7519]  __tsan_read8+0xc6/0x100
[   67.679822][ T7519]  tcp_recvmsg+0x46e/0x1b40
[   67.684312][ T7519]  inet_recvmsg+0xbb/0x250
[   67.688706][ T7519]  ? apparmor_socket_recvmsg+0x3b/0x50
[   67.694144][ T7519]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   67.700364][ T7519]  ? security_socket_recvmsg+0x92/0xb0
[   67.705799][ T7519]  ? inet_sendpage+0x100/0x100
[   67.710543][ T7519]  sock_recvmsg+0x92/0xb0
[   67.714853][ T7519]  sock_read_iter+0x15f/0x1e0
[   67.719533][ T7519]  new_sync_read+0x389/0x4f0
[   67.724118][ T7519]  __vfs_read+0xb1/0xc0
[   67.728252][ T7519]  vfs_read+0x143/0x2c0
[   67.732403][ T7519]  ksys_read+0xd5/0x1b0
[   67.736538][ T7519]  __x64_sys_read+0x4c/0x60
[   67.741023][ T7519]  do_syscall_64+0xcc/0x370
[   67.745506][ T7519]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   67.751375][ T7519] RIP: 0033:0x47c530
[   67.755251][ T7519] 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
[   67.774841][ T7519] RSP: 002b:000000c4203177d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   67.783228][ T7519] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   67.791189][ T7519] RDX: 0000000000001000 RSI: 000000c420324000 RDI: 0000000000000003
[   67.799138][ T7519] RBP: 000000c420317830 R08: 0000000000000000 R09: 0000000000000000
[   67.807086][ T7519] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000010
[   67.815041][ T7519] R13: ffffffffffffffff R14: 0000000000000004 R15: ffffffffffffffff
[   67.824274][ T7519] Kernel Offset: disabled
[   67.828599][ T7519] Rebooting in 86400 seconds..