[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 84.488952][ T31] audit: type=1800 audit(1574950970.537:25): pid=11891 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 84.512889][ T31] audit: type=1800 audit(1574950970.567:26): pid=11891 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 84.548735][ T31] audit: type=1800 audit(1574950970.587:27): pid=11891 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 '10.128.15.209' (ECDSA) to the list of known hosts. syzkaller login: [ 98.503560][T12044] IPVS: ftp: loaded support on port[0] = 21 [ 98.577341][T12044] chnl_net:caif_netlink_parms(): no params data found [ 98.613830][T12044] bridge0: port 1(bridge_slave_0) entered blocking state [ 98.621183][T12044] bridge0: port 1(bridge_slave_0) entered disabled state [ 98.629734][T12044] device bridge_slave_0 entered promiscuous mode [ 98.638089][T12044] bridge0: port 2(bridge_slave_1) entered blocking state [ 98.645373][T12044] bridge0: port 2(bridge_slave_1) entered disabled state [ 98.653496][T12044] device bridge_slave_1 entered promiscuous mode [ 98.675371][T12044] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 98.686883][T12044] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 98.709593][T12044] team0: Port device team_slave_0 added [ 98.717626][T12044] team0: Port device team_slave_1 added [ 98.775110][T12044] device hsr_slave_0 entered promiscuous mode [ 98.822619][T12044] device hsr_slave_1 entered promiscuous mode [ 98.986496][T12044] bridge0: port 2(bridge_slave_1) entered blocking state [ 98.993805][T12044] bridge0: port 2(bridge_slave_1) entered forwarding state [ 99.001673][T12044] bridge0: port 1(bridge_slave_0) entered blocking state [ 99.009031][T12044] bridge0: port 1(bridge_slave_0) entered forwarding state [ 99.259272][T12044] 8021q: adding VLAN 0 to HW filter on device bond0 [ 99.300257][ T3901] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 99.323754][ T3901] bridge0: port 1(bridge_slave_0) entered disabled state [ 99.342290][ T3901] bridge0: port 2(bridge_slave_1) entered disabled state [ 99.374337][ T3901] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 99.418482][T12044] 8021q: adding VLAN 0 to HW filter on device team0 [ 99.461029][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 99.470234][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 99.477516][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 99.564591][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 99.573882][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 99.581018][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 99.591326][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 99.642026][T12044] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 99.652535][T12044] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 99.682867][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 99.692495][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 99.702401][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 99.712020][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 99.723155][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 99.733114][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 99.742603][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 99.808830][T12044] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 99.847493][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 99.856133][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 99.863890][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 99.979628][T12044] ===================================================== [ 99.986649][T12044] BUG: KMSAN: uninit-value in ip_tunnel_xmit+0x3c6/0x3320 [ 99.993792][T12044] CPU: 0 PID: 12044 Comm: syz-executor993 Not tainted 5.4.0-rc8-syzkaller #0 [ 100.002612][T12044] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 100.012644][T12044] Call Trace: [ 100.015929][T12044] dump_stack+0x1c9/0x220 [ 100.020240][T12044] kmsan_report+0x128/0x220 [ 100.024852][T12044] __msan_warning+0x64/0xc0 [ 100.029360][T12044] ip_tunnel_xmit+0x3c6/0x3320 [ 100.034116][T12044] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 100.040233][T12044] ? skb_push+0x15b/0x250 [ 100.044554][T12044] ? gre_build_header+0x3ec/0x9f0 [ 100.049561][T12044] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 100.055436][T12044] ipgre_xmit+0xff3/0x1120 [ 100.059836][T12044] ? ipgre_close+0x240/0x240 [ 100.064451][T12044] dev_hard_start_xmit+0x51a/0xab0 [ 100.069546][T12044] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 100.075423][T12044] __dev_queue_xmit+0x35b6/0x4200 [ 100.080461][T12044] dev_queue_xmit+0x4b/0x60 [ 100.084957][T12044] ? netdev_core_pick_tx+0x4d0/0x4d0 [ 100.090234][T12044] packet_sendmsg+0x8234/0x9100 [ 100.095092][T12044] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 100.101158][T12044] ? aa_label_sk_perm+0x6d6/0x940 [ 100.106187][T12044] ? kmsan_get_metadata+0x51/0x350 [ 100.111343][T12044] ? kmsan_internal_set_origin+0x6a/0xb0 [ 100.116966][T12044] ? metadata_is_contiguous+0x270/0x270 [ 100.122504][T12044] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 100.128660][T12044] ? aa_sk_perm+0x730/0xaf0 [ 100.133164][T12044] ? compat_packet_setsockopt+0x360/0x360 [ 100.138860][T12044] ___sys_sendmsg+0x14ff/0x1590 [ 100.143724][T12044] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 100.149599][T12044] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 100.155643][T12044] ? __fget_light+0x1b8/0x710 [ 100.160312][T12044] __se_sys_sendmsg+0x305/0x460 [ 100.165150][T12044] __x64_sys_sendmsg+0x4a/0x70 [ 100.169892][T12044] do_syscall_64+0xb6/0x160 [ 100.174389][T12044] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 100.180270][T12044] RIP: 0033:0x441fb9 [ 100.184157][T12044] 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 [ 100.203757][T12044] RSP: 002b:00007ffd42a19558 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 100.212174][T12044] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441fb9 [ 100.220173][T12044] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000004 [ 100.228122][T12044] RBP: 0000000000000004 R08: 0000000000000025 R09: 0000000000000025 [ 100.236076][T12044] R10: 0000000000000025 R11: 0000000000000246 R12: 0000000000000000 [ 100.244027][T12044] R13: 0000000000403530 R14: 0000000000000000 R15: 0000000000000000 [ 100.252227][T12044] [ 100.254545][T12044] Uninit was created at: [ 100.258908][T12044] kmsan_internal_poison_shadow+0x5c/0x110 [ 100.264714][T12044] kmsan_slab_alloc+0x97/0x100 [ 100.269466][T12044] __kmalloc_node_track_caller+0xe27/0x11a0 [ 100.275358][T12044] __alloc_skb+0x306/0xa10 [ 100.279782][T12044] alloc_skb_with_frags+0x18c/0xa80 [ 100.284978][T12044] sock_alloc_send_pskb+0xafd/0x10a0 [ 100.290253][T12044] packet_sendmsg+0x63a6/0x9100 [ 100.295088][T12044] ___sys_sendmsg+0x14ff/0x1590 [ 100.299916][T12044] __se_sys_sendmsg+0x305/0x460 [ 100.304745][T12044] __x64_sys_sendmsg+0x4a/0x70 [ 100.309520][T12044] do_syscall_64+0xb6/0x160 [ 100.314002][T12044] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 100.319885][T12044] ===================================================== [ 100.326804][T12044] Disabling lock debugging due to kernel taint [ 100.332931][T12044] Kernel panic - not syncing: panic_on_warn set ... [ 100.339546][T12044] CPU: 0 PID: 12044 Comm: syz-executor993 Tainted: G B 5.4.0-rc8-syzkaller #0 [ 100.349677][T12044] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 100.359723][T12044] Call Trace: [ 100.363001][T12044] dump_stack+0x1c9/0x220 [ 100.367335][T12044] panic+0x3c9/0xc1e [ 100.371230][T12044] kmsan_report+0x215/0x220 [ 100.375739][T12044] __msan_warning+0x64/0xc0 [ 100.380247][T12044] ip_tunnel_xmit+0x3c6/0x3320 [ 100.385008][T12044] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 100.391058][T12044] ? skb_push+0x15b/0x250 [ 100.395377][T12044] ? gre_build_header+0x3ec/0x9f0 [ 100.400384][T12044] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 100.406258][T12044] ipgre_xmit+0xff3/0x1120 [ 100.410657][T12044] ? ipgre_close+0x240/0x240 [ 100.415250][T12044] dev_hard_start_xmit+0x51a/0xab0 [ 100.420346][T12044] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 100.426221][T12044] __dev_queue_xmit+0x35b6/0x4200 [ 100.431248][T12044] dev_queue_xmit+0x4b/0x60 [ 100.435756][T12044] ? netdev_core_pick_tx+0x4d0/0x4d0 [ 100.441021][T12044] packet_sendmsg+0x8234/0x9100 [ 100.445860][T12044] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 100.451927][T12044] ? aa_label_sk_perm+0x6d6/0x940 [ 100.456940][T12044] ? kmsan_get_metadata+0x51/0x350 [ 100.462040][T12044] ? kmsan_internal_set_origin+0x6a/0xb0 [ 100.467652][T12044] ? metadata_is_contiguous+0x270/0x270 [ 100.473181][T12044] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 100.479225][T12044] ? aa_sk_perm+0x730/0xaf0 [ 100.483746][T12044] ? compat_packet_setsockopt+0x360/0x360 [ 100.489456][T12044] ___sys_sendmsg+0x14ff/0x1590 [ 100.494300][T12044] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 100.500171][T12044] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 100.506239][T12044] ? __fget_light+0x1b8/0x710 [ 100.510926][T12044] __se_sys_sendmsg+0x305/0x460 [ 100.515795][T12044] __x64_sys_sendmsg+0x4a/0x70 [ 100.520539][T12044] do_syscall_64+0xb6/0x160 [ 100.525023][T12044] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 100.530907][T12044] RIP: 0033:0x441fb9 [ 100.534798][T12044] 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 [ 100.554391][T12044] RSP: 002b:00007ffd42a19558 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 100.562800][T12044] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441fb9 [ 100.570748][T12044] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000004 [ 100.578698][T12044] RBP: 0000000000000004 R08: 0000000000000025 R09: 0000000000000025 [ 100.586658][T12044] R10: 0000000000000025 R11: 0000000000000246 R12: 0000000000000000 [ 100.594628][T12044] R13: 0000000000403530 R14: 0000000000000000 R15: 0000000000000000 [ 100.604029][T12044] Kernel Offset: 0x7000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 100.615562][T12044] Rebooting in 86400 seconds..