[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [ 83.237412][ T31] audit: type=1800 audit(1574802757.286:25): pid=11962 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 83.260030][ T31] audit: type=1800 audit(1574802757.306:26): pid=11962 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 83.326320][ T31] audit: type=1800 audit(1574802757.336:27): pid=11962 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[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.128' (ECDSA) to the list of known hosts. syzkaller login: [ 93.925931][T12114] IPVS: ftp: loaded support on port[0] = 21 [ 93.996444][T12114] chnl_net:caif_netlink_parms(): no params data found [ 94.029677][T12114] bridge0: port 1(bridge_slave_0) entered blocking state [ 94.036920][T12114] bridge0: port 1(bridge_slave_0) entered disabled state [ 94.045315][T12114] device bridge_slave_0 entered promiscuous mode [ 94.053584][T12114] bridge0: port 2(bridge_slave_1) entered blocking state [ 94.060661][T12114] bridge0: port 2(bridge_slave_1) entered disabled state [ 94.068892][T12114] device bridge_slave_1 entered promiscuous mode [ 94.089359][T12114] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 94.100687][T12114] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 94.122873][T12114] team0: Port device team_slave_0 added [ 94.130413][T12114] team0: Port device team_slave_1 added [ 94.184878][T12114] device hsr_slave_0 entered promiscuous mode [ 94.222370][T12114] device hsr_slave_1 entered promiscuous mode [ 94.394469][T12114] bridge0: port 2(bridge_slave_1) entered blocking state [ 94.401757][T12114] bridge0: port 2(bridge_slave_1) entered forwarding state [ 94.409479][T12114] bridge0: port 1(bridge_slave_0) entered blocking state [ 94.416701][T12114] bridge0: port 1(bridge_slave_0) entered forwarding state [ 94.558640][T12114] 8021q: adding VLAN 0 to HW filter on device bond0 [ 94.626037][ T3942] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 94.654252][ T3942] bridge0: port 1(bridge_slave_0) entered disabled state [ 94.673086][ T3942] bridge0: port 2(bridge_slave_1) entered disabled state [ 94.704437][ T3942] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 94.740219][T12114] 8021q: adding VLAN 0 to HW filter on device team0 [ 94.814195][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 94.823618][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 94.830779][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 94.925250][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 94.934576][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 94.941840][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 94.951785][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 94.961956][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 94.971470][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 94.980564][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 94.995423][T12114] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 95.069559][T12114] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 95.112769][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 95.120412][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 95.129437][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready executing program [ 95.332235][ C0] protocol 88fb is buggy, dev hsr_slave_0 [ 95.335931][T12114] ===================================================== [ 95.338428][ C0] protocol 88fb is buggy, dev hsr_slave_1 [ 95.345007][T12114] BUG: KMSAN: uninit-value in ip_tunnel_xmit+0x3c6/0x3320 [ 95.345023][T12114] CPU: 1 PID: 12114 Comm: syz-executor999 Not tainted 5.4.0-rc8-syzkaller #0 [ 95.345030][T12114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 95.345035][T12114] Call Trace: [ 95.345053][T12114] dump_stack+0x1c9/0x220 [ 95.345074][T12114] kmsan_report+0x128/0x220 [ 95.345151][T12114] __msan_warning+0x64/0xc0 [ 95.393250][T12114] ip_tunnel_xmit+0x3c6/0x3320 [ 95.397995][T12114] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 95.404070][T12114] ? skb_push+0x15b/0x250 [ 95.408382][T12114] ? gre_build_header+0x3ec/0x9f0 [ 95.413389][T12114] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 95.419261][T12114] ipgre_xmit+0xff3/0x1120 [ 95.423667][T12114] ? ipgre_close+0x240/0x240 [ 95.428232][T12114] dev_hard_start_xmit+0x51a/0xab0 [ 95.433326][T12114] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 95.439196][T12114] __dev_queue_xmit+0x35b6/0x4200 [ 95.444248][T12114] dev_queue_xmit+0x4b/0x60 [ 95.448728][T12114] ? netdev_core_pick_tx+0x4d0/0x4d0 [ 95.452248][ C0] protocol 88fb is buggy, dev hsr_slave_0 [ 95.454121][T12114] packet_sendmsg+0x8234/0x9100 [ 95.460166][ C0] protocol 88fb is buggy, dev hsr_slave_1 [ 95.464656][T12114] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 95.464672][T12114] ? aa_label_sk_perm+0x6d6/0x940 [ 95.464699][T12114] ? kmsan_get_metadata+0x51/0x350 [ 95.464716][T12114] ? kmsan_internal_set_origin+0x6a/0xb0 [ 95.464782][T12114] ? metadata_is_contiguous+0x270/0x270 [ 95.497696][T12114] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 95.503743][T12114] ? aa_sk_perm+0x730/0xaf0 [ 95.508245][T12114] ? compat_packet_setsockopt+0x360/0x360 [ 95.513941][T12114] ___sys_sendmsg+0x14ff/0x1590 [ 95.518784][T12114] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 95.524659][T12114] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 95.530701][T12114] ? __fget_light+0x1b8/0x710 [ 95.535362][T12114] __se_sys_sendmsg+0x305/0x460 [ 95.540198][T12114] __x64_sys_sendmsg+0x4a/0x70 [ 95.544947][T12114] do_syscall_64+0xb6/0x160 [ 95.549432][T12114] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 95.555333][T12114] RIP: 0033:0x441fb9 [ 95.559203][T12114] 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 [ 95.578796][T12114] RSP: 002b:00007ffecb349738 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 95.587182][T12114] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441fb9 [ 95.595146][T12114] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 [ 95.603095][T12114] RBP: 0000000000000004 R08: 0000000000000025 R09: 0000000000000025 [ 95.611045][T12114] R10: 0000000000000025 R11: 0000000000000246 R12: 0000000000000000 [ 95.618996][T12114] R13: 0000000000403530 R14: 0000000000000000 R15: 0000000000000000 [ 95.626967][T12114] [ 95.629279][T12114] Uninit was created at: [ 95.633508][T12114] kmsan_internal_poison_shadow+0x60/0x120 [ 95.639298][T12114] kmsan_slab_alloc+0x97/0x100 [ 95.644041][T12114] __kmalloc_node_track_caller+0xe27/0x11a0 [ 95.649922][T12114] __alloc_skb+0x306/0xa10 [ 95.654316][T12114] alloc_skb_with_frags+0x18c/0xa80 [ 95.659488][T12114] sock_alloc_send_pskb+0xafd/0x10a0 [ 95.664746][T12114] packet_sendmsg+0x63a6/0x9100 [ 95.669570][T12114] ___sys_sendmsg+0x14ff/0x1590 [ 95.674393][T12114] __se_sys_sendmsg+0x305/0x460 [ 95.679225][T12114] __x64_sys_sendmsg+0x4a/0x70 [ 95.683983][T12114] do_syscall_64+0xb6/0x160 [ 95.688463][T12114] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 95.694325][T12114] ===================================================== [ 95.701229][T12114] Disabling lock debugging due to kernel taint [ 95.707351][T12114] Kernel panic - not syncing: panic_on_warn set ... [ 95.713916][T12114] CPU: 1 PID: 12114 Comm: syz-executor999 Tainted: G B 5.4.0-rc8-syzkaller #0 [ 95.724046][T12114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 95.734078][T12114] Call Trace: [ 95.737349][T12114] dump_stack+0x1c9/0x220 [ 95.741672][T12114] panic+0x3c9/0xc1e [ 95.745572][T12114] kmsan_report+0x215/0x220 [ 95.750067][T12114] __msan_warning+0x64/0xc0 [ 95.754555][T12114] ip_tunnel_xmit+0x3c6/0x3320 [ 95.759297][T12114] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 95.765342][T12114] ? skb_push+0x15b/0x250 [ 95.769656][T12114] ? gre_build_header+0x3ec/0x9f0 [ 95.774662][T12114] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 95.780542][T12114] ipgre_xmit+0xff3/0x1120 [ 95.784942][T12114] ? ipgre_close+0x240/0x240 [ 95.789512][T12114] dev_hard_start_xmit+0x51a/0xab0 [ 95.794606][T12114] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 95.800474][T12114] __dev_queue_xmit+0x35b6/0x4200 [ 95.805487][T12114] dev_queue_xmit+0x4b/0x60 [ 95.809968][T12114] ? netdev_core_pick_tx+0x4d0/0x4d0 [ 95.815231][T12114] packet_sendmsg+0x8234/0x9100 [ 95.820067][T12114] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 95.826112][T12114] ? aa_label_sk_perm+0x6d6/0x940 [ 95.831124][T12114] ? kmsan_get_metadata+0x51/0x350 [ 95.836214][T12114] ? kmsan_internal_set_origin+0x6a/0xb0 [ 95.841824][T12114] ? metadata_is_contiguous+0x270/0x270 [ 95.847357][T12114] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 95.853413][T12114] ? aa_sk_perm+0x730/0xaf0 [ 95.857915][T12114] ? compat_packet_setsockopt+0x360/0x360 [ 95.863629][T12114] ___sys_sendmsg+0x14ff/0x1590 [ 95.868481][T12114] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 95.874364][T12114] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 95.880438][T12114] ? __fget_light+0x1b8/0x710 [ 95.885106][T12114] __se_sys_sendmsg+0x305/0x460 [ 95.889979][T12114] __x64_sys_sendmsg+0x4a/0x70 [ 95.894735][T12114] do_syscall_64+0xb6/0x160 [ 95.899222][T12114] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 95.905092][T12114] RIP: 0033:0x441fb9 [ 95.909001][T12114] 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 [ 95.928587][T12114] RSP: 002b:00007ffecb349738 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 95.936983][T12114] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441fb9 [ 95.944941][T12114] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 [ 95.952895][T12114] RBP: 0000000000000004 R08: 0000000000000025 R09: 0000000000000025 [ 95.960848][T12114] R10: 0000000000000025 R11: 0000000000000246 R12: 0000000000000000 [ 95.968798][T12114] R13: 0000000000403530 R14: 0000000000000000 R15: 0000000000000000 [ 95.978128][T12114] Kernel Offset: 0x22600000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 95.989750][T12114] Rebooting in 86400 seconds..