[info] Using makefile-style concurrent boot in runlevel 2. [ 24.206945] audit: type=1800 audit(1539442152.109:21): pid=5171 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 24.235797] audit: type=1800 audit(1539442152.119:22): pid=5171 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2447 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.106' (ECDSA) to the list of known hosts. 2018/10/13 14:56:30 parsed 1 programs 2018/10/13 14:56:32 executed programs: 0 syzkaller login: [ 464.364842] IPVS: ftp: loaded support on port[0] = 21 [ 464.617942] bridge0: port 1(bridge_slave_0) entered blocking state [ 464.624613] bridge0: port 1(bridge_slave_0) entered disabled state [ 464.632143] device bridge_slave_0 entered promiscuous mode [ 464.650118] bridge0: port 2(bridge_slave_1) entered blocking state [ 464.656664] bridge0: port 2(bridge_slave_1) entered disabled state [ 464.663984] device bridge_slave_1 entered promiscuous mode [ 464.682130] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 464.701001] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 464.750581] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 464.770840] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 464.846685] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 464.854243] team0: Port device team_slave_0 added [ 464.872087] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 464.879271] team0: Port device team_slave_1 added [ 464.896308] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 464.914724] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 464.933115] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 464.953348] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 465.098844] bridge0: port 2(bridge_slave_1) entered blocking state [ 465.105446] bridge0: port 2(bridge_slave_1) entered forwarding state [ 465.112389] bridge0: port 1(bridge_slave_0) entered blocking state [ 465.118763] bridge0: port 1(bridge_slave_0) entered forwarding state [ 465.621814] 8021q: adding VLAN 0 to HW filter on device bond0 [ 465.673146] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 465.725835] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 465.732033] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 465.739761] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 465.782602] 8021q: adding VLAN 0 to HW filter on device team0 2018/10/13 14:56:37 executed programs: 42 2018/10/13 14:56:42 executed programs: 106 2018/10/13 14:56:47 executed programs: 171 2018/10/13 14:56:52 executed programs: 237 2018/10/13 14:56:57 executed programs: 303 2018/10/13 14:57:02 executed programs: 368 2018/10/13 14:57:07 executed programs: 433 2018/10/13 14:57:12 executed programs: 499 2018/10/13 14:57:17 executed programs: 563 2018/10/13 14:57:22 executed programs: 628 2018/10/13 14:57:27 executed programs: 692 2018/10/13 14:57:32 executed programs: 757 2018/10/13 14:57:37 executed programs: 823 2018/10/13 14:57:42 executed programs: 889 2018/10/13 14:57:47 executed programs: 955 2018/10/13 14:57:52 executed programs: 1021 2018/10/13 14:57:57 executed programs: 1087 2018/10/13 14:58:02 executed programs: 1152 2018/10/13 14:58:07 executed programs: 1218 2018/10/13 14:58:13 executed programs: 1284 2018/10/13 14:58:18 executed programs: 1349 2018/10/13 14:58:23 executed programs: 1413 2018/10/13 14:58:28 executed programs: 1478 2018/10/13 14:58:33 executed programs: 1543 2018/10/13 14:58:38 executed programs: 1608 2018/10/13 14:58:43 executed programs: 1674 2018/10/13 14:58:48 executed programs: 1739 2018/10/13 14:58:53 executed programs: 1805 2018/10/13 14:58:58 executed programs: 1871 2018/10/13 14:59:03 executed programs: 1937 2018/10/13 14:59:08 executed programs: 2004 2018/10/13 14:59:13 executed programs: 2070 2018/10/13 14:59:18 executed programs: 2136 2018/10/13 14:59:23 executed programs: 2200 2018/10/13 14:59:28 executed programs: 2264 2018/10/13 14:59:33 executed programs: 2330 2018/10/13 14:59:38 executed programs: 2396 2018/10/13 14:59:43 executed programs: 2461 2018/10/13 14:59:48 executed programs: 2527 2018/10/13 14:59:53 executed programs: 2593 2018/10/13 14:59:58 executed programs: 2659 2018/10/13 15:00:03 executed programs: 2724 2018/10/13 15:00:08 executed programs: 2789 [ 682.725495] ================================================================== [ 682.733462] BUG: KASAN: use-after-free in vhost_work_queue+0xc3/0xe0 [ 682.739970] Read of size 8 at addr ffff8801c7ac82e8 by task syz-executor0/18745 [ 682.747552] [ 682.749184] CPU: 0 PID: 18745 Comm: syz-executor0 Not tainted 4.19.0-rc7+ #281 [ 682.756544] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 682.765963] Call Trace: [ 682.768622] dump_stack+0x1c4/0x2b4 [ 682.772248] ? dump_stack_print_info.cold.2+0x52/0x52 [ 682.777481] ? printk+0xa7/0xcf [ 682.780754] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 682.785572] print_address_description.cold.8+0x9/0x1ff [ 682.791045] kasan_report.cold.9+0x242/0x309 [ 682.795502] ? vhost_work_queue+0xc3/0xe0 [ 682.799647] __asan_report_load8_noabort+0x14/0x20 [ 682.804566] vhost_work_queue+0xc3/0xe0 [ 682.808534] vhost_transport_send_pkt+0x28a/0x380 [ 682.813392] ? vhost_vsock_dev_open+0x5a0/0x5a0 [ 682.818071] ? virtio_transport_send_pkt_info+0x2e7/0x460 [ 682.823665] ? __local_bh_enable_ip+0x160/0x260 [ 682.828340] virtio_transport_send_pkt_info+0x31d/0x460 [ 682.833705] virtio_transport_connect+0x17c/0x220 [ 682.838553] ? virtio_transport_send_pkt_info+0x460/0x460 [ 682.844475] ? vsock_auto_bind+0xa9/0xe0 [ 682.848596] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 682.854185] vsock_stream_connect+0x4ed/0xe40 [ 682.858751] ? vsock_dgram_connect+0x500/0x500 [ 682.863388] ? finish_wait+0x430/0x430 [ 682.867399] ? aa_af_perm+0x5a0/0x5a0 [ 682.871224] ? apparmor_socket_connect+0xb6/0x160 [ 682.876064] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 682.881654] ? security_socket_connect+0x94/0xc0 [ 682.886439] __sys_connect+0x37d/0x4c0 [ 682.890317] ? __ia32_sys_accept+0xb0/0xb0 [ 682.894554] ? kasan_check_read+0x11/0x20 [ 682.898750] ? _copy_to_user+0xc8/0x110 [ 682.902729] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 682.908399] ? put_timespec64+0x10f/0x1b0 [ 682.912585] ? do_syscall_64+0x9a/0x820 [ 682.916559] ? do_syscall_64+0x9a/0x820 [ 682.920564] ? lockdep_hardirqs_on+0x421/0x5c0 [ 682.925183] ? trace_hardirqs_on+0xbd/0x310 [ 682.929500] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 682.935106] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 682.940478] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 682.945937] __x64_sys_connect+0x73/0xb0 [ 682.950002] do_syscall_64+0x1b9/0x820 [ 682.953896] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 682.959346] ? syscall_return_slowpath+0x5e0/0x5e0 [ 682.964289] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 682.969137] ? trace_hardirqs_on_caller+0x310/0x310 [ 682.974160] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 682.979280] ? prepare_exit_to_usermode+0x291/0x3b0 [ 682.984298] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 682.989146] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 682.994989] RIP: 0033:0x457569 [ 682.998179] Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 683.017189] RSP: 002b:00007f8398aabc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 683.024914] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 [ 683.032186] RDX: 0000000000000010 RSI: 0000000020000200 RDI: 0000000000000008 [ 683.039448] RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 [ 683.046705] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8398aac6d4 [ 683.053971] R13: 00000000004bdb06 R14: 00000000004cc658 R15: 00000000ffffffff [ 683.061812] [ 683.064416] Allocated by task 18745: [ 683.068850] save_stack+0x43/0xd0 [ 683.072290] kasan_kmalloc+0xc7/0xe0 [ 683.076035] __kmalloc_node+0x47/0x70 [ 683.079878] kvmalloc_node+0xb9/0xf0 [ 683.083592] vhost_vsock_dev_open+0xa2/0x5a0 [ 683.088045] misc_open+0x3ca/0x560 [ 683.091606] chrdev_open+0x25a/0x710 [ 683.095308] do_dentry_open+0x499/0x1250 [ 683.099358] vfs_open+0xa0/0xd0 [ 683.102637] path_openat+0x12bf/0x5160 [ 683.106509] do_filp_open+0x255/0x380 [ 683.110294] do_sys_open+0x568/0x700 [ 683.114007] __x64_sys_openat+0x9d/0x100 [ 683.118065] do_syscall_64+0x1b9/0x820 [ 683.121944] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 683.127118] [ 683.128735] Freed by task 18743: [ 683.132095] save_stack+0x43/0xd0 [ 683.135632] __kasan_slab_free+0x102/0x150 [ 683.139855] kasan_slab_free+0xe/0x10 [ 683.143754] kfree+0xcf/0x230 [ 683.146855] kvfree+0x61/0x70 [ 683.149949] vhost_vsock_dev_release+0x4f4/0x720 [ 683.154688] __fput+0x385/0xa30 [ 683.157950] ____fput+0x15/0x20 [ 683.161272] task_work_run+0x1e8/0x2a0 [ 683.165608] exit_to_usermode_loop+0x318/0x380 [ 683.170189] do_syscall_64+0x6be/0x820 [ 683.174068] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 683.179362] [ 683.180990] The buggy address belongs to the object at ffff8801c7ac8240 [ 683.180990] which belongs to the cache kmalloc-65536 of size 65536 [ 683.194000] The buggy address is located 168 bytes inside of [ 683.194000] 65536-byte region [ffff8801c7ac8240, ffff8801c7ad8240) [ 683.206049] The buggy address belongs to the page: [ 683.210985] page:ffffea00071eb000 count:1 mapcount:0 mapping:ffff8801da802500 index:0x0 compound_mapcount: 0 [ 683.221064] flags: 0x2fffc0000008100(slab|head) [ 683.225830] raw: 02fffc0000008100 ffffea0006ca6808 ffffea0006e91008 ffff8801da802500 [ 683.233929] raw: 0000000000000000 ffff8801c7ac8240 0000000100000001 0000000000000000 [ 683.241807] page dumped because: kasan: bad access detected [ 683.247514] [ 683.249130] Memory state around the buggy address: [ 683.254049] ffff8801c7ac8180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 683.261412] ffff8801c7ac8200: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb [ 683.268876] >ffff8801c7ac8280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 683.276243] ^ [ 683.282993] ffff8801c7ac8300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 683.290452] ffff8801c7ac8380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 683.297871] ================================================================== [ 683.305230] Disabling lock debugging due to kernel taint [ 683.311092] Kernel panic - not syncing: panic_on_warn set ... [ 683.311092] [ 683.318466] CPU: 0 PID: 18745 Comm: syz-executor0 Tainted: G B 4.19.0-rc7+ #281 [ 683.327210] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 683.336554] Call Trace: [ 683.339139] dump_stack+0x1c4/0x2b4 [ 683.342753] ? dump_stack_print_info.cold.2+0x52/0x52 [ 683.347936] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 683.352685] panic+0x238/0x4e7 [ 683.355863] ? add_taint.cold.5+0x16/0x16 [ 683.360004] ? preempt_schedule+0x4d/0x60 [ 683.364158] ? ___preempt_schedule+0x16/0x18 [ 683.368558] ? trace_hardirqs_on+0xb4/0x310 [ 683.372869] kasan_end_report+0x47/0x4f [ 683.376837] kasan_report.cold.9+0x76/0x309 [ 683.381154] ? vhost_work_queue+0xc3/0xe0 [ 683.385292] __asan_report_load8_noabort+0x14/0x20 [ 683.390207] vhost_work_queue+0xc3/0xe0 [ 683.394166] vhost_transport_send_pkt+0x28a/0x380 [ 683.398999] ? vhost_vsock_dev_open+0x5a0/0x5a0 [ 683.403656] ? virtio_transport_send_pkt_info+0x2e7/0x460 [ 683.409183] ? __local_bh_enable_ip+0x160/0x260 [ 683.413841] virtio_transport_send_pkt_info+0x31d/0x460 [ 683.419203] virtio_transport_connect+0x17c/0x220 [ 683.424036] ? virtio_transport_send_pkt_info+0x460/0x460 [ 683.429674] ? vsock_auto_bind+0xa9/0xe0 [ 683.433728] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 683.439327] vsock_stream_connect+0x4ed/0xe40 [ 683.443820] ? vsock_dgram_connect+0x500/0x500 [ 683.448389] ? finish_wait+0x430/0x430 [ 683.452263] ? aa_af_perm+0x5a0/0x5a0 [ 683.456053] ? apparmor_socket_connect+0xb6/0x160 [ 683.460882] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 683.466411] ? security_socket_connect+0x94/0xc0 [ 683.471225] __sys_connect+0x37d/0x4c0 [ 683.475109] ? __ia32_sys_accept+0xb0/0xb0 [ 683.479337] ? kasan_check_read+0x11/0x20 [ 683.483473] ? _copy_to_user+0xc8/0x110 [ 683.487433] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 683.492965] ? put_timespec64+0x10f/0x1b0 [ 683.497103] ? do_syscall_64+0x9a/0x820 [ 683.501057] ? do_syscall_64+0x9a/0x820 [ 683.505015] ? lockdep_hardirqs_on+0x421/0x5c0 [ 683.509585] ? trace_hardirqs_on+0xbd/0x310 [ 683.513899] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 683.519433] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 683.524791] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 683.531027] __x64_sys_connect+0x73/0xb0 [ 683.535083] do_syscall_64+0x1b9/0x820 [ 683.538957] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 683.544598] ? syscall_return_slowpath+0x5e0/0x5e0 [ 683.549523] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 683.554360] ? trace_hardirqs_on_caller+0x310/0x310 [ 683.559379] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 683.564396] ? prepare_exit_to_usermode+0x291/0x3b0 [ 683.569407] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 683.574398] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 683.579579] RIP: 0033:0x457569 [ 683.582896] Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 683.601951] RSP: 002b:00007f8398aabc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 683.609659] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 [ 683.616925] RDX: 0000000000000010 RSI: 0000000020000200 RDI: 0000000000000008 [ 683.624193] RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 [ 683.631809] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8398aac6d4 [ 683.639074] R13: 00000000004bdb06 R14: 00000000004cc658 R15: 00000000ffffffff [ 683.647405] Kernel Offset: disabled [ 683.651041] Rebooting in 86400 seconds..