[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 105.815450][ T32] audit: type=1800 audit(1582494734.878:25): pid=11072 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 105.843502][ T32] audit: type=1800 audit(1582494734.898:26): pid=11072 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 105.883354][ T32] audit: type=1800 audit(1582494734.928:27): pid=11072 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 '10.128.1.10' (ECDSA) to the list of known hosts. syzkaller login: [ 119.383705][T11224] IPVS: ftp: loaded support on port[0] = 21 [ 119.485367][T11224] chnl_net:caif_netlink_parms(): no params data found [ 119.560067][T11224] bridge0: port 1(bridge_slave_0) entered blocking state [ 119.567482][T11224] bridge0: port 1(bridge_slave_0) entered disabled state [ 119.576061][T11224] device bridge_slave_0 entered promiscuous mode [ 119.585179][T11224] bridge0: port 2(bridge_slave_1) entered blocking state [ 119.592299][T11224] bridge0: port 2(bridge_slave_1) entered disabled state [ 119.600996][T11224] device bridge_slave_1 entered promiscuous mode [ 119.626936][T11224] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 119.638637][T11224] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 119.664675][T11224] team0: Port device team_slave_0 added [ 119.673134][T11224] team0: Port device team_slave_1 added [ 119.694887][T11224] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 119.701866][T11224] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 119.727865][T11224] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 119.739834][T11224] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 119.746985][T11224] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 119.773241][T11224] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 119.846175][T11224] device hsr_slave_0 entered promiscuous mode [ 119.893520][T11224] device hsr_slave_1 entered promiscuous mode [ 120.039567][T11224] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 120.097053][T11224] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 120.157167][T11224] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 120.216834][T11224] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 120.299756][T11224] bridge0: port 2(bridge_slave_1) entered blocking state [ 120.307208][T11224] bridge0: port 2(bridge_slave_1) entered forwarding state [ 120.315103][T11224] bridge0: port 1(bridge_slave_0) entered blocking state [ 120.322289][T11224] bridge0: port 1(bridge_slave_0) entered forwarding state [ 120.386041][T11224] 8021q: adding VLAN 0 to HW filter on device bond0 [ 120.402460][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 120.413879][ T27] bridge0: port 1(bridge_slave_0) entered disabled state [ 120.423041][ T27] bridge0: port 2(bridge_slave_1) entered disabled state [ 120.433565][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 120.450050][T11224] 8021q: adding VLAN 0 to HW filter on device team0 [ 120.466087][ T2727] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 120.475431][ T2727] bridge0: port 1(bridge_slave_0) entered blocking state [ 120.482789][ T2727] bridge0: port 1(bridge_slave_0) entered forwarding state [ 120.496426][ T3392] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 120.505552][ T3392] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 120.515036][ T3392] bridge0: port 2(bridge_slave_1) entered blocking state [ 120.522218][ T3392] bridge0: port 2(bridge_slave_1) entered forwarding state [ 120.555546][ T3392] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 120.565580][ T3392] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 120.575492][ T3392] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 120.586016][ T3392] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 120.596237][ T3392] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 120.606797][ T3392] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 120.616261][ T3392] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 120.625073][ T3392] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 120.634314][ T3392] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 120.643507][ T3392] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 120.654527][ T3392] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 120.669394][T11224] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 120.697687][ T2727] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 120.706279][ T2727] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 120.721568][T11224] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 120.746313][ T3392] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 120.756394][ T3392] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 120.781907][ T2727] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 120.791947][ T2727] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 120.804189][ T2727] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 120.813987][ T2727] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 120.825008][T11224] device veth0_vlan entered promiscuous mode [ 120.840866][T11224] device veth1_vlan entered promiscuous mode [ 120.869351][ T3392] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 120.879015][ T3392] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 120.887997][ T3392] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 120.897039][ T3392] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 120.911075][T11224] device veth0_macvtap entered promiscuous mode [ 120.925217][T11224] device veth1_macvtap entered promiscuous mode [ 120.949023][T11224] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 120.956616][ T2727] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 120.966187][ T2727] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 120.975351][ T2727] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 120.984709][ T2727] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 120.999437][T11224] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 121.007095][ T3392] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 121.016796][ T3392] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 121.226528][T11224] ===================================================== [ 121.233507][T11224] BUG: KMSAN: uninit-value in ethnl_update_bitset32+0x2c85/0x3860 [ 121.241339][T11224] CPU: 1 PID: 11224 Comm: syz-executor343 Not tainted 5.6.0-rc2-syzkaller #0 [ 121.250071][T11224] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 121.260104][T11224] Call Trace: [ 121.263388][T11224] dump_stack+0x1c9/0x220 [ 121.267719][T11224] kmsan_report+0xf7/0x1e0 [ 121.272117][T11224] __msan_warning+0x58/0xa0 [ 121.276606][T11224] ethnl_update_bitset32+0x2c85/0x3860 [ 121.282070][T11224] ? kmsan_get_metadata+0x11d/0x180 [ 121.287267][T11224] ? kmsan_memcpy_memmove_metadata+0x10c/0x2e0 [ 121.293455][T11224] ? kmsan_memcpy_metadata+0xb/0x10 [ 121.298661][T11224] ? __msan_memcpy+0x43/0x50 [ 121.303240][T11224] ethnl_update_bitset+0x11c/0x130 [ 121.308340][T11224] ethnl_set_linkmodes+0x9f9/0x1430 [ 121.313584][T11224] ? kmsan_get_metadata+0x11d/0x180 [ 121.318796][T11224] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 121.324750][T11224] ? linkmodes_fill_reply+0x5c0/0x5c0 [ 121.330112][T11224] genl_rcv_msg+0x205e/0x2460 [ 121.334789][T11224] netlink_rcv_skb+0x451/0x650 [ 121.339530][T11224] ? genl_unbind+0x380/0x380 [ 121.344103][T11224] genl_rcv+0x63/0x80 [ 121.348065][T11224] netlink_unicast+0xf9e/0x1100 [ 121.352908][T11224] ? genl_pernet_exit+0x90/0x90 [ 121.357750][T11224] netlink_sendmsg+0x1246/0x14d0 [ 121.362678][T11224] ? netlink_getsockopt+0x1440/0x1440 [ 121.368025][T11224] ____sys_sendmsg+0x12b6/0x1350 [ 121.372955][T11224] __sys_sendmsg+0x451/0x5f0 [ 121.377537][T11224] ? __fpregs_load_activate+0x38c/0x3c0 [ 121.383063][T11224] ? kmsan_get_metadata+0x11d/0x180 [ 121.388237][T11224] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 121.394024][T11224] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 121.400066][T11224] ? prepare_exit_to_usermode+0x1ca/0x520 [ 121.405783][T11224] __se_sys_sendmsg+0x97/0xb0 [ 121.410443][T11224] __x64_sys_sendmsg+0x4a/0x70 [ 121.415200][T11224] do_syscall_64+0xb8/0x160 [ 121.419695][T11224] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 121.425562][T11224] RIP: 0033:0x447859 [ 121.429432][T11224] 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 8b d2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 121.449025][T11224] RSP: 002b:00007ffd924af4a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 121.457424][T11224] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000447859 [ 121.465431][T11224] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 121.473387][T11224] RBP: 00007ffd924af4f0 R08: 0000000000000000 R09: 00000000bb1414ac [ 121.481337][T11224] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 121.489286][T11224] R13: 0000000000405000 R14: 0000000000000000 R15: 0000000000000000 [ 121.497247][T11224] [ 121.499555][T11224] Uninit was created at: [ 121.503922][T11224] kmsan_internal_poison_shadow+0x66/0xd0 [ 121.509616][T11224] kmsan_slab_alloc+0x8a/0xe0 [ 121.514273][T11224] __kmalloc_node_track_caller+0xb40/0x1200 [ 121.520140][T11224] __alloc_skb+0x2fd/0xac0 [ 121.524579][T11224] netlink_sendmsg+0x7d3/0x14d0 [ 121.529405][T11224] ____sys_sendmsg+0x12b6/0x1350 [ 121.534315][T11224] __sys_sendmsg+0x451/0x5f0 [ 121.538881][T11224] __se_sys_sendmsg+0x97/0xb0 [ 121.543532][T11224] __x64_sys_sendmsg+0x4a/0x70 [ 121.548316][T11224] do_syscall_64+0xb8/0x160 [ 121.552806][T11224] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 121.558789][T11224] ===================================================== [ 121.565693][T11224] Disabling lock debugging due to kernel taint [ 121.571838][T11224] Kernel panic - not syncing: panic_on_warn set ... [ 121.578405][T11224] CPU: 1 PID: 11224 Comm: syz-executor343 Tainted: G B 5.6.0-rc2-syzkaller #0 [ 121.588524][T11224] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 121.598557][T11224] Call Trace: [ 121.601827][T11224] dump_stack+0x1c9/0x220 [ 121.606140][T11224] panic+0x3d5/0xc3e [ 121.610034][T11224] kmsan_report+0x1df/0x1e0 [ 121.614520][T11224] __msan_warning+0x58/0xa0 [ 121.619018][T11224] ethnl_update_bitset32+0x2c85/0x3860 [ 121.624630][T11224] ? kmsan_get_metadata+0x11d/0x180 [ 121.629825][T11224] ? kmsan_memcpy_memmove_metadata+0x10c/0x2e0 [ 121.638149][T11224] ? kmsan_memcpy_metadata+0xb/0x10 [ 121.643329][T11224] ? __msan_memcpy+0x43/0x50 [ 121.647906][T11224] ethnl_update_bitset+0x11c/0x130 [ 121.653007][T11224] ethnl_set_linkmodes+0x9f9/0x1430 [ 121.658202][T11224] ? kmsan_get_metadata+0x11d/0x180 [ 121.663384][T11224] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 121.669171][T11224] ? linkmodes_fill_reply+0x5c0/0x5c0 [ 121.674522][T11224] genl_rcv_msg+0x205e/0x2460 [ 121.679199][T11224] netlink_rcv_skb+0x451/0x650 [ 121.683942][T11224] ? genl_unbind+0x380/0x380 [ 121.688516][T11224] genl_rcv+0x63/0x80 [ 121.692484][T11224] netlink_unicast+0xf9e/0x1100 [ 121.697323][T11224] ? genl_pernet_exit+0x90/0x90 [ 121.702199][T11224] netlink_sendmsg+0x1246/0x14d0 [ 121.707125][T11224] ? netlink_getsockopt+0x1440/0x1440 [ 121.712531][T11224] ____sys_sendmsg+0x12b6/0x1350 [ 121.717472][T11224] __sys_sendmsg+0x451/0x5f0 [ 121.722073][T11224] ? __fpregs_load_activate+0x38c/0x3c0 [ 121.727617][T11224] ? kmsan_get_metadata+0x11d/0x180 [ 121.732805][T11224] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 121.738590][T11224] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 121.744636][T11224] ? prepare_exit_to_usermode+0x1ca/0x520 [ 121.750342][T11224] __se_sys_sendmsg+0x97/0xb0 [ 121.755004][T11224] __x64_sys_sendmsg+0x4a/0x70 [ 121.759807][T11224] do_syscall_64+0xb8/0x160 [ 121.764294][T11224] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 121.770197][T11224] RIP: 0033:0x447859 [ 121.774073][T11224] 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 8b d2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 121.793666][T11224] RSP: 002b:00007ffd924af4a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 121.802053][T11224] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000447859 [ 121.810006][T11224] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 121.817954][T11224] RBP: 00007ffd924af4f0 R08: 0000000000000000 R09: 00000000bb1414ac [ 121.825902][T11224] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 121.833962][T11224] R13: 0000000000405000 R14: 0000000000000000 R15: 0000000000000000 [ 121.843264][T11224] Kernel Offset: 0x2c00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 121.854799][T11224] Rebooting in 86400 seconds..