[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 83.045571][ T32] audit: type=1800 audit(1574915241.107:25): pid=11901 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 83.069810][ T32] audit: type=1800 audit(1574915241.127:26): pid=11901 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 83.102560][ T32] audit: type=1800 audit(1574915241.157:27): pid=11901 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] 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 '10.128.1.3' (ECDSA) to the list of known hosts. syzkaller login: [ 94.628216][T12053] IPVS: ftp: loaded support on port[0] = 21 [ 94.701894][T12053] chnl_net:caif_netlink_parms(): no params data found [ 94.737959][T12053] bridge0: port 1(bridge_slave_0) entered blocking state [ 94.747073][T12053] bridge0: port 1(bridge_slave_0) entered disabled state [ 94.755471][T12053] device bridge_slave_0 entered promiscuous mode [ 94.764279][T12053] bridge0: port 2(bridge_slave_1) entered blocking state [ 94.771399][T12053] bridge0: port 2(bridge_slave_1) entered disabled state [ 94.779871][T12053] device bridge_slave_1 entered promiscuous mode [ 94.800985][T12053] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 94.814695][T12053] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 94.837228][T12053] team0: Port device team_slave_0 added [ 94.845156][T12053] team0: Port device team_slave_1 added [ 94.905108][T12053] device hsr_slave_0 entered promiscuous mode [ 94.952939][T12053] device hsr_slave_1 entered promiscuous mode [ 95.128393][T12053] bridge0: port 2(bridge_slave_1) entered blocking state [ 95.135728][T12053] bridge0: port 2(bridge_slave_1) entered forwarding state [ 95.143535][T12053] bridge0: port 1(bridge_slave_0) entered blocking state [ 95.150727][T12053] bridge0: port 1(bridge_slave_0) entered forwarding state [ 95.327457][T12053] 8021q: adding VLAN 0 to HW filter on device bond0 [ 95.375372][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 95.387341][ T12] bridge0: port 1(bridge_slave_0) entered disabled state [ 95.422577][ T12] bridge0: port 2(bridge_slave_1) entered disabled state [ 95.454870][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 95.490218][T12053] 8021q: adding VLAN 0 to HW filter on device team0 [ 95.523315][ T2872] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 95.532561][ T2872] bridge0: port 1(bridge_slave_0) entered blocking state [ 95.539741][ T2872] bridge0: port 1(bridge_slave_0) entered forwarding state [ 95.620798][T12053] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 95.631990][T12053] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 95.650025][ T2872] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 95.659255][ T2872] bridge0: port 2(bridge_slave_1) entered blocking state [ 95.666825][ T2872] bridge0: port 2(bridge_slave_1) entered forwarding state [ 95.677714][ T2872] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 95.688008][ T2872] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 95.698026][ T2872] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 95.708021][ T2872] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 95.799823][T12053] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 95.834430][ T2872] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 95.842223][ T2872] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 95.850475][ T2872] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 95.859408][ T2872] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready executing program [ 96.078357][T12053] ===================================================== [ 96.085375][T12053] BUG: KMSAN: uninit-value in ip_tunnel_xmit+0x3c6/0x3320 [ 96.092476][T12053] CPU: 1 PID: 12053 Comm: syz-executor456 Not tainted 5.4.0-rc8-syzkaller #0 [ 96.101208][T12053] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 96.111317][T12053] Call Trace: [ 96.114602][T12053] dump_stack+0x1c9/0x220 [ 96.118990][T12053] kmsan_report+0x128/0x220 [ 96.123495][T12053] __msan_warning+0x64/0xc0 [ 96.127994][T12053] ip_tunnel_xmit+0x3c6/0x3320 [ 96.132813][T12053] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 96.138993][T12053] ? skb_push+0x15b/0x250 [ 96.142792][ C0] protocol 88fb is buggy, dev hsr_slave_0 [ 96.143548][T12053] ? gre_build_header+0x3ec/0x9f0 [ 96.149600][ C0] protocol 88fb is buggy, dev hsr_slave_1 [ 96.154732][T12053] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 96.154749][T12053] ipgre_xmit+0xff3/0x1120 [ 96.154772][T12053] ? ipgre_close+0x240/0x240 [ 96.154787][T12053] dev_hard_start_xmit+0x51a/0xab0 [ 96.154810][T12053] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 96.154882][T12053] __dev_queue_xmit+0x35b6/0x4200 [ 96.191944][T12053] dev_queue_xmit+0x4b/0x60 [ 96.196449][T12053] ? netdev_core_pick_tx+0x4d0/0x4d0 [ 96.201881][T12053] packet_sendmsg+0x8234/0x9100 [ 96.206862][T12053] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 96.213885][T12053] ? aa_label_sk_perm+0x6d6/0x940 [ 96.218901][T12053] ? kmsan_get_metadata+0x51/0x350 [ 96.226728][T12053] ? kmsan_internal_set_origin+0x6a/0xb0 [ 96.232447][T12053] ? metadata_is_contiguous+0x270/0x270 [ 96.237981][T12053] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 96.244226][T12053] ? aa_sk_perm+0x730/0xaf0 [ 96.248741][T12053] ? compat_packet_setsockopt+0x360/0x360 [ 96.254465][T12053] ___sys_sendmsg+0x14ff/0x1590 [ 96.259330][T12053] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 96.265224][T12053] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 96.271278][T12053] ? __fget_light+0x1b8/0x710 [ 96.290113][T12053] __se_sys_sendmsg+0x305/0x460 [ 96.294981][T12053] __x64_sys_sendmsg+0x4a/0x70 [ 96.299793][T12053] do_syscall_64+0xb6/0x160 [ 96.304466][T12053] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 96.310541][T12053] RIP: 0033:0x441fb9 [ 96.314467][T12053] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 5b 10 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 96.334074][T12053] RSP: 002b:00007ffce8baee08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 96.342495][T12053] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441fb9 [ 96.350452][T12053] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000004 [ 96.358631][T12053] RBP: 0000000000000004 R08: 0000000000000025 R09: 0000000000000025 [ 96.366771][T12053] R10: 0000000000000025 R11: 0000000000000246 R12: 0000000000000000 [ 96.375021][T12053] R13: 0000000000403530 R14: 0000000000000000 R15: 0000000000000000 [ 96.383163][T12053] [ 96.385573][T12053] Uninit was created at: [ 96.390043][T12053] kmsan_internal_poison_shadow+0x5c/0x110 [ 96.395945][T12053] kmsan_slab_alloc+0x97/0x100 [ 96.400694][T12053] __kmalloc_node_track_caller+0xe27/0x11a0 [ 96.406884][T12053] __alloc_skb+0x306/0xa10 [ 96.411446][T12053] alloc_skb_with_frags+0x18c/0xa80 [ 96.416816][T12053] sock_alloc_send_pskb+0xafd/0x10a0 [ 96.422113][T12053] packet_sendmsg+0x63a6/0x9100 [ 96.426963][T12053] ___sys_sendmsg+0x14ff/0x1590 [ 96.431795][T12053] __se_sys_sendmsg+0x305/0x460 [ 96.436625][T12053] __x64_sys_sendmsg+0x4a/0x70 [ 96.441366][T12053] do_syscall_64+0xb6/0x160 [ 96.445860][T12053] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 96.451858][T12053] ===================================================== [ 96.459442][T12053] Disabling lock debugging due to kernel taint [ 96.465605][T12053] Kernel panic - not syncing: panic_on_warn set ... [ 96.472287][T12053] CPU: 1 PID: 12053 Comm: syz-executor456 Tainted: G B 5.4.0-rc8-syzkaller #0 [ 96.482748][T12053] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 96.492917][T12053] Call Trace: [ 96.496224][T12053] dump_stack+0x1c9/0x220 [ 96.500648][T12053] panic+0x3c9/0xc1e [ 96.504691][T12053] kmsan_report+0x215/0x220 [ 96.509193][T12053] __msan_warning+0x64/0xc0 [ 96.513709][T12053] ip_tunnel_xmit+0x3c6/0x3320 [ 96.518627][T12053] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 96.524692][T12053] ? skb_push+0x15b/0x250 [ 96.529210][T12053] ? gre_build_header+0x3ec/0x9f0 [ 96.534265][T12053] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 96.540147][T12053] ipgre_xmit+0xff3/0x1120 [ 96.544574][T12053] ? ipgre_close+0x240/0x240 [ 96.549261][T12053] dev_hard_start_xmit+0x51a/0xab0 [ 96.554368][T12053] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 96.560284][T12053] __dev_queue_xmit+0x35b6/0x4200 [ 96.565328][T12053] dev_queue_xmit+0x4b/0x60 [ 96.569814][T12053] ? netdev_core_pick_tx+0x4d0/0x4d0 [ 96.575109][T12053] packet_sendmsg+0x8234/0x9100 [ 96.580075][T12053] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 96.586139][T12053] ? aa_label_sk_perm+0x6d6/0x940 [ 96.591171][T12053] ? kmsan_get_metadata+0x51/0x350 [ 96.596365][T12053] ? kmsan_internal_set_origin+0x6a/0xb0 [ 96.601989][T12053] ? metadata_is_contiguous+0x270/0x270 [ 96.607727][T12053] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 96.613795][T12053] ? aa_sk_perm+0x730/0xaf0 [ 96.618305][T12053] ? compat_packet_setsockopt+0x360/0x360 [ 96.624087][T12053] ___sys_sendmsg+0x14ff/0x1590 [ 96.628941][T12053] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 96.634868][T12053] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 96.641306][T12053] ? __fget_light+0x1b8/0x710 [ 96.646135][T12053] __se_sys_sendmsg+0x305/0x460 [ 96.651547][T12053] __x64_sys_sendmsg+0x4a/0x70 [ 96.656653][T12053] do_syscall_64+0xb6/0x160 [ 96.661285][T12053] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 96.667619][T12053] RIP: 0033:0x441fb9 [ 96.671566][T12053] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 5b 10 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 96.691511][T12053] RSP: 002b:00007ffce8baee08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 96.699998][T12053] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441fb9 [ 96.708197][T12053] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000004 [ 96.718349][T12053] RBP: 0000000000000004 R08: 0000000000000025 R09: 0000000000000025 [ 96.726679][T12053] R10: 0000000000000025 R11: 0000000000000246 R12: 0000000000000000 [ 96.734833][T12053] R13: 0000000000403530 R14: 0000000000000000 R15: 0000000000000000 [ 96.744565][T12053] Kernel Offset: 0xb200000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 96.756176][T12053] Rebooting in 86400 seconds..