[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 81.299860][ T31] audit: type=1800 audit(1575346722.347:25): pid=11945 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 81.322968][ T31] audit: type=1800 audit(1575346722.377:26): pid=11945 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 81.358548][ T31] audit: type=1800 audit(1575346722.397:27): pid=11945 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 '10.128.1.56' (ECDSA) to the list of known hosts. syzkaller login: [ 90.618256][T12099] IPVS: ftp: loaded support on port[0] = 21 [ 90.618842][T12105] IPVS: ftp: loaded support on port[0] = 21 [ 90.638277][T12102] IPVS: ftp: loaded support on port[0] = 21 [ 90.643489][T12106] IPVS: ftp: loaded support on port[0] = 21 [ 90.657456][T12107] IPVS: ftp: loaded support on port[0] = 21 [ 90.659613][T12108] IPVS: ftp: loaded support on port[0] = 21 [ 90.967346][T12105] chnl_net:caif_netlink_parms(): no params data found [ 91.086771][T12106] chnl_net:caif_netlink_parms(): no params data found [ 91.194548][T12105] bridge0: port 1(bridge_slave_0) entered blocking state [ 91.201924][T12105] bridge0: port 1(bridge_slave_0) entered disabled state [ 91.210541][T12105] device bridge_slave_0 entered promiscuous mode [ 91.226445][T12105] bridge0: port 2(bridge_slave_1) entered blocking state [ 91.233716][T12105] bridge0: port 2(bridge_slave_1) entered disabled state [ 91.242129][T12105] device bridge_slave_1 entered promiscuous mode [ 91.276950][T12105] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 91.286435][T12099] chnl_net:caif_netlink_parms(): no params data found [ 91.313591][T12105] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 91.351602][T12102] chnl_net:caif_netlink_parms(): no params data found [ 91.393163][T12106] bridge0: port 1(bridge_slave_0) entered blocking state [ 91.400316][T12106] bridge0: port 1(bridge_slave_0) entered disabled state [ 91.409288][T12106] device bridge_slave_0 entered promiscuous mode [ 91.419766][T12105] team0: Port device team_slave_0 added [ 91.425940][T12106] bridge0: port 2(bridge_slave_1) entered blocking state [ 91.433212][T12106] bridge0: port 2(bridge_slave_1) entered disabled state [ 91.441650][T12106] device bridge_slave_1 entered promiscuous mode [ 91.524238][T12105] team0: Port device team_slave_1 added [ 91.533291][T12106] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 91.580586][T12106] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 91.636243][T12099] bridge0: port 1(bridge_slave_0) entered blocking state [ 91.643448][T12099] bridge0: port 1(bridge_slave_0) entered disabled state [ 91.651888][T12099] device bridge_slave_0 entered promiscuous mode [ 91.663885][T12099] bridge0: port 2(bridge_slave_1) entered blocking state [ 91.671116][T12099] bridge0: port 2(bridge_slave_1) entered disabled state [ 91.679787][T12099] device bridge_slave_1 entered promiscuous mode [ 91.708870][T12106] team0: Port device team_slave_0 added [ 91.738357][T12107] chnl_net:caif_netlink_parms(): no params data found [ 91.767164][T12106] team0: Port device team_slave_1 added [ 91.814733][T12105] device hsr_slave_0 entered promiscuous mode [ 91.862868][T12105] device hsr_slave_1 entered promiscuous mode [ 91.902880][T12108] chnl_net:caif_netlink_parms(): no params data found [ 91.912894][T12102] bridge0: port 1(bridge_slave_0) entered blocking state [ 91.920040][T12102] bridge0: port 1(bridge_slave_0) entered disabled state [ 91.928560][T12102] device bridge_slave_0 entered promiscuous mode [ 91.958195][T12099] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 91.971194][T12099] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 91.994397][T12102] bridge0: port 2(bridge_slave_1) entered blocking state [ 92.001580][T12102] bridge0: port 2(bridge_slave_1) entered disabled state [ 92.010129][T12102] device bridge_slave_1 entered promiscuous mode [ 92.096567][T12106] device hsr_slave_0 entered promiscuous mode [ 92.122587][T12106] device hsr_slave_1 entered promiscuous mode [ 92.233218][T12106] debugfs: Directory 'hsr0' with parent '/' already present! [ 92.296353][T12107] bridge0: port 1(bridge_slave_0) entered blocking state [ 92.303721][T12107] bridge0: port 1(bridge_slave_0) entered disabled state [ 92.312184][T12107] device bridge_slave_0 entered promiscuous mode [ 92.357548][T12099] team0: Port device team_slave_0 added [ 92.422247][T12099] team0: Port device team_slave_1 added [ 92.433467][T12102] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 92.466152][T12107] bridge0: port 2(bridge_slave_1) entered blocking state [ 92.473468][T12107] bridge0: port 2(bridge_slave_1) entered disabled state [ 92.482248][T12107] device bridge_slave_1 entered promiscuous mode [ 92.524617][T12108] bridge0: port 1(bridge_slave_0) entered blocking state [ 92.531935][T12108] bridge0: port 1(bridge_slave_0) entered disabled state [ 92.540508][T12108] device bridge_slave_0 entered promiscuous mode [ 92.556917][T12102] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 92.753126][T12099] device hsr_slave_0 entered promiscuous mode [ 92.782821][T12099] device hsr_slave_1 entered promiscuous mode [ 92.833801][T12099] debugfs: Directory 'hsr0' with parent '/' already present! [ 92.873107][T12108] bridge0: port 2(bridge_slave_1) entered blocking state [ 92.880345][T12108] bridge0: port 2(bridge_slave_1) entered disabled state [ 92.889172][T12108] device bridge_slave_1 entered promiscuous mode [ 92.935670][T12102] team0: Port device team_slave_0 added [ 92.947805][T12107] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 93.036413][T12102] team0: Port device team_slave_1 added [ 93.085616][T12107] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 93.222723][T12108] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 93.245712][T12105] 8021q: adding VLAN 0 to HW filter on device bond0 [ 93.387560][T12102] device hsr_slave_0 entered promiscuous mode [ 93.453382][T12102] device hsr_slave_1 entered promiscuous mode [ 93.504048][T12102] debugfs: Directory 'hsr0' with parent '/' already present! [ 93.526885][T12107] team0: Port device team_slave_0 added [ 93.535857][T12108] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 93.565707][T12107] team0: Port device team_slave_1 added [ 93.626042][T12106] 8021q: adding VLAN 0 to HW filter on device bond0 [ 93.693097][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 93.701770][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 93.737980][T12105] 8021q: adding VLAN 0 to HW filter on device team0 [ 93.903287][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 93.912216][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 93.920529][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 93.930069][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 93.938962][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 93.946269][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 93.954613][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 93.964000][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 93.973197][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 93.980412][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 94.044310][T12108] team0: Port device team_slave_0 added [ 94.097454][T12107] device hsr_slave_0 entered promiscuous mode [ 94.265217][T12107] device hsr_slave_1 entered promiscuous mode [ 94.364203][T12107] debugfs: Directory 'hsr0' with parent '/' already present! [ 94.385830][T12106] 8021q: adding VLAN 0 to HW filter on device team0 [ 94.417561][T12108] team0: Port device team_slave_1 added [ 94.634499][T12099] 8021q: adding VLAN 0 to HW filter on device bond0 [ 94.723383][T12105] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 94.733931][T12105] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 94.877985][T12099] 8021q: adding VLAN 0 to HW filter on device team0 [ 94.945089][T12108] device hsr_slave_0 entered promiscuous mode [ 95.007699][T12108] device hsr_slave_1 entered promiscuous mode [ 95.044121][T12108] debugfs: Directory 'hsr0' with parent '/' already present! [ 95.067984][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 95.076978][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 95.086892][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 95.096779][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 95.106600][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 95.116067][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 95.125480][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 95.134451][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 95.141593][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 95.150007][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 95.159821][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 95.169438][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 95.178717][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 95.188397][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 95.197842][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 95.206931][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 95.214146][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 95.222632][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 95.231773][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 95.240923][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 95.250928][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 95.260938][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 95.269471][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 95.277909][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 95.287754][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 95.297173][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 95.306900][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 95.316482][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 95.325660][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 95.420224][T12106] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 95.432686][T12106] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 95.719916][T12105] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 95.755730][T12102] 8021q: adding VLAN 0 to HW filter on device bond0 [ 96.134307][T12099] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 96.144827][T12099] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 96.184771][T12102] 8021q: adding VLAN 0 to HW filter on device team0 [ 96.257746][T12106] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 96.490998][T12107] 8021q: adding VLAN 0 to HW filter on device bond0 [ 96.829109][T12107] 8021q: adding VLAN 0 to HW filter on device team0 [ 96.905447][T12099] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 96.918789][T12102] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 96.929760][T12102] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network executing program executing program [ 97.218382][T12108] 8021q: adding VLAN 0 to HW filter on device bond0 executing program [ 97.410865][T12280] batman_adv: batadv0: Adding interface: gretap0 [ 97.417796][T12280] batman_adv: batadv0: The MTU of interface gretap0 is too small (1462) 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. [ 97.443288][T12280] batman_adv: batadv0: Interface activated: gretap0 executing program [ 97.467294][T12107] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 97.477824][T12107] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network executing program [ 97.584512][T12102] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 97.679101][T12108] 8021q: adding VLAN 0 to HW filter on device team0 [ 97.768633][T12287] batman_adv: batadv0: Adding interface: gretap0 [ 97.775369][T12287] batman_adv: batadv0: The MTU of interface gretap0 is too small (1462) 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. [ 97.801373][T12287] batman_adv: batadv0: Interface activated: gretap0 [ 97.934672][T12107] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program executing program [ 98.082662][T12294] batman_adv: batadv0: Adding interface: erspan0 [ 98.089093][T12294] batman_adv: batadv0: The MTU of interface erspan0 is too small (1450) 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. [ 98.114500][T12294] batman_adv: batadv0: Interface activated: erspan0 executing program [ 98.130085][T12108] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 98.140888][T12108] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network executing program executing program [ 98.294746][T12301] batman_adv: batadv0: Adding interface: erspan0 [ 98.301170][T12301] batman_adv: batadv0: The MTU of interface erspan0 is too small (1450) 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. [ 98.326564][T12301] batman_adv: batadv0: Interface activated: erspan0 [ 98.356802][T12303] batman_adv: batadv0: Adding interface: gretap0 [ 98.363273][T12303] batman_adv: batadv0: The MTU of interface gretap0 is too small (1462) 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. [ 98.389061][T12303] batman_adv: batadv0: Interface activated: gretap0 executing program executing program executing program executing program executing program executing program executing program [ 98.668353][T12108] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 98.730932][T12319] batman_adv: batadv0: Adding interface: gretap0 [ 98.738034][T12319] batman_adv: batadv0: The MTU of interface gretap0 is too small (1462) 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. [ 98.763484][T12319] batman_adv: batadv0: Interface activated: gretap0 executing program [ 98.788812][T12323] batman_adv: batadv0: Adding interface: erspan0 [ 98.795662][T12323] batman_adv: batadv0: The MTU of interface erspan0 is too small (1450) 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. [ 98.821177][T12323] batman_adv: batadv0: Interface activated: erspan0 [ 98.847700][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 98.856857][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 98.865783][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 98.874354][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 98.883946][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 98.894641][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 98.903701][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 98.910847][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 98.919276][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 98.928498][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 98.937625][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 98.947079][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 98.956172][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 98.963391][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 98.971885][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 98.982000][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 98.989667][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 98.997378][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 99.007432][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 99.017253][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 99.026856][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 99.036728][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 99.046244][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 99.055387][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 99.064985][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 99.072703][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 99.080334][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 99.089648][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready executing program [ 99.098949][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 99.107640][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 99.116345][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 99.125815][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 99.134803][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 99.142088][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 99.150495][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 99.159979][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 99.169094][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 99.176351][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 99.184827][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 99.194689][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 99.204625][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 99.213222][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 99.221600][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 99.231464][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 99.241009][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 99.248776][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 99.256513][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 99.266337][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 99.275901][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 99.285082][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 99.294741][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 99.303963][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 99.313380][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 99.322820][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 99.331733][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 99.338998][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 99.347479][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 99.356915][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 99.365957][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 99.373209][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 99.381635][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 99.391675][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 99.401735][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 99.411614][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 99.421369][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 99.431231][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 99.440738][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready executing program [ 99.449932][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 99.459582][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 99.468810][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 99.477981][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 99.485722][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 99.493421][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 99.501927][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 99.510450][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 99.519872][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 99.528879][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 99.536126][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 99.544629][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready executing program [ 99.552376][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 99.560054][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 99.569531][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 99.578627][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 99.585899][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 99.594400][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 99.607717][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 99.617857][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 99.627682][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 99.637279][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 99.647225][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 99.656737][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 99.665944][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 99.675559][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 99.684746][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 99.694147][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready executing program [ 99.701900][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 99.729985][T12338] batman_adv: batadv0: Adding interface: erspan0 [ 99.736913][T12338] batman_adv: batadv0: The MTU of interface erspan0 is too small (1450) 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. [ 99.762524][T12338] batman_adv: batadv0: Interface activated: erspan0 [ 99.786435][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 99.795867][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 99.808425][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 99.817104][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 99.825890][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 99.834870][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 99.843482][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready executing program executing program executing program executing program executing program [ 99.852232][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 99.861038][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 99.869560][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 99.878226][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 99.887226][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 99.896775][T12347] batman_adv: batadv0: Adding interface: syz_tun executing program executing program executing program executing program executing program executing program [ 99.903494][T12347] batman_adv: batadv0: The MTU of interface syz_tun 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. [ 99.929364][T12347] batman_adv: batadv0: Interface activated: syz_tun executing program executing program executing program executing program [ 99.998158][T12359] batman_adv: batadv0: Adding interface: gretap0 [ 100.004655][T12359] batman_adv: batadv0: The MTU of interface gretap0 is too small (1462) 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. [ 100.031625][T12359] batman_adv: batadv0: Interface activated: gretap0 executing program executing program [ 100.078178][T12363] batman_adv: batadv0: Adding interface: syz_tun [ 100.084664][T12363] batman_adv: batadv0: The MTU of interface syz_tun 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. [ 100.110872][T12363] batman_adv: batadv0: Interface activated: syz_tun executing program executing program executing program [ 100.126452][T12364] batman_adv: batadv0: Adding interface: ip6gretap0 [ 100.133206][T12364] batman_adv: batadv0: The MTU of interface ip6gretap0 is too small (1434) 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. [ 100.164014][T12364] batman_adv: batadv0: Interface activated: ip6gretap0 [ 100.181135][T12368] batman_adv: batadv0: Adding interface: erspan0 [ 100.187899][T12368] batman_adv: batadv0: The MTU of interface erspan0 is too small (1450) 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. [ 100.213311][T12368] batman_adv: batadv0: Interface activated: erspan0 executing program executing program executing program executing program [ 100.226530][T12369] batman_adv: batadv0: Adding interface: ip6gretap0 [ 100.233795][T12369] batman_adv: batadv0: The MTU of interface ip6gretap0 is too small (1434) 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. [ 100.259497][T12369] batman_adv: batadv0: Interface activated: ip6gretap0 [ 100.275412][T12371] batman_adv: batadv0: Adding interface: bridge0 executing program executing program [ 100.282797][T12371] batman_adv: batadv0: The MTU of interface bridge0 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. [ 100.308221][T12371] batman_adv: batadv0: Interface activated: bridge0 [ 100.316635][T12370] batman_adv: batadv0: Adding interface: syz_tun executing program [ 100.323101][T12370] batman_adv: batadv0: The MTU of interface syz_tun 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. [ 100.348750][T12370] batman_adv: batadv0: Interface activated: syz_tun [ 100.364693][T12374] batman_adv: batadv0: Adding interface: bridge0 executing program executing program executing program [ 100.371098][T12374] batman_adv: batadv0: The MTU of interface bridge0 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. [ 100.396485][T12374] batman_adv: batadv0: Interface activated: bridge0 executing program executing program executing program [ 100.427861][T12379] batman_adv: batadv0: Adding interface: gretap0 [ 100.434765][T12379] batman_adv: batadv0: The MTU of interface gretap0 is too small (1462) 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. [ 100.460216][T12379] batman_adv: batadv0: Interface activated: gretap0 executing program [ 100.478327][T12378] batman_adv: batadv0: Adding interface: ip6gretap0 [ 100.485064][T12378] batman_adv: batadv0: The MTU of interface ip6gretap0 is too small (1434) 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. [ 100.510840][T12378] batman_adv: batadv0: Interface activated: ip6gretap0 [ 100.519273][T12377] batman_adv: batadv0: Adding interface: syz_tun executing program [ 100.525755][T12377] batman_adv: batadv0: The MTU of interface syz_tun 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. [ 100.551114][T12377] batman_adv: batadv0: Interface activated: syz_tun [ 100.559238][T12380] batman_adv: batadv0: Adding interface: bond0 executing program executing program executing program [ 100.565477][T12380] batman_adv: batadv0: The MTU of interface bond0 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. [ 100.590678][T12380] batman_adv: batadv0: Interface activated: bond0 [ 100.599130][T12383] batman_adv: batadv0: Adding interface: erspan0 executing program executing program [ 100.605698][T12383] batman_adv: batadv0: The MTU of interface erspan0 is too small (1450) 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. [ 100.631918][T12383] batman_adv: batadv0: Interface activated: erspan0 [ 100.641516][T12385] batman_adv: batadv0: Adding interface: bridge0 [ 100.648003][T12385] batman_adv: batadv0: The MTU of interface bridge0 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. executing program [ 100.674118][T12385] batman_adv: batadv0: Interface activated: bridge0 [ 100.683404][T12386] batman_adv: batadv0: Adding interface: ip6gretap0 [ 100.690057][T12386] batman_adv: batadv0: The MTU of interface ip6gretap0 is too small (1434) 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. [ 100.717701][T12386] batman_adv: batadv0: Interface activated: ip6gretap0 executing program executing program [ 100.732851][T12387] batman_adv: batadv0: Adding interface: bond0 [ 100.739079][T12387] batman_adv: batadv0: The MTU of interface bond0 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. [ 100.764436][T12387] batman_adv: batadv0: Interface activated: bond0 [ 100.772227][T12388] batman_adv: batadv0: Adding interface: team0 [ 100.778433][T12388] batman_adv: batadv0: The MTU of interface team0 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. [ 100.803761][T12388] batman_adv: batadv0: Interface activated: team0 [ 100.823783][T12392] batman_adv: batadv0: Adding interface: bridge0 executing program executing program executing program executing program executing program [ 100.830232][T12392] batman_adv: batadv0: The MTU of interface bridge0 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. [ 100.856237][T12392] batman_adv: batadv0: Interface activated: bridge0 [ 100.873478][T12393] batman_adv: batadv0: Adding interface: bond0 executing program executing program [ 100.879713][T12393] batman_adv: batadv0: The MTU of interface bond0 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. [ 100.904971][T12393] batman_adv: batadv0: Interface activated: bond0 [ 100.912878][T12397] batman_adv: batadv0: Adding interface: team0 [ 100.919220][T12397] batman_adv: batadv0: The MTU of interface team0 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. [ 100.944622][T12397] batman_adv: batadv0: Interface activated: team0 [ 100.953424][T12395] batman_adv: batadv0: Adding interface: dummy0 executing program [ 100.959731][T12395] batman_adv: batadv0: The MTU of interface dummy0 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. [ 100.986409][T12395] batman_adv: batadv0: Interface activated: dummy0 [ 101.002879][T12399] batman_adv: batadv0: Adding interface: team0 [ 101.009113][T12399] batman_adv: batadv0: The MTU of interface team0 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. executing program executing program executing program executing program executing program [ 101.034411][T12399] batman_adv: batadv0: Interface activated: team0 [ 101.043391][T12401] batman_adv: batadv0: Adding interface: dummy0 [ 101.049689][T12401] batman_adv: batadv0: The MTU of interface dummy0 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. [ 101.075120][T12401] batman_adv: batadv0: Interface activated: dummy0 [ 101.090345][T12405] batman_adv: batadv0: Adding interface: dummy0 [ 101.096709][T12405] batman_adv: batadv0: The MTU of interface dummy0 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. [ 101.122691][T12405] batman_adv: batadv0: Interface activated: dummy0 [ 101.131047][T12400] batman_adv: batadv0: Adding interface: syz_tun executing program executing program executing program executing program [ 101.138262][T12400] batman_adv: batadv0: The MTU of interface syz_tun 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. [ 101.163746][T12400] batman_adv: batadv0: Interface activated: syz_tun [ 101.175788][T12404] batman_adv: batadv0: Adding interface: bond0 executing program executing program [ 101.182086][T12404] batman_adv: batadv0: The MTU of interface bond0 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. [ 101.207334][T12404] batman_adv: batadv0: Interface activated: bond0 executing program executing program executing program executing program executing program [ 101.240080][T12410] batman_adv: batadv0: Adding interface: ip6gretap0 [ 101.247320][T12410] batman_adv: batadv0: The MTU of interface ip6gretap0 is too small (1434) 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. [ 101.273096][T12410] batman_adv: batadv0: Interface activated: ip6gretap0 executing program executing program executing program executing program [ 101.303791][T12416] batman_adv: batadv0: Adding interface: team0 [ 101.310703][T12416] batman_adv: batadv0: The MTU of interface team0 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. [ 101.336442][T12416] batman_adv: batadv0: Interface activated: team0 [ 101.353650][T12418] batman_adv: batadv0: Adding interface: syz_tun [ 101.360065][T12418] batman_adv: batadv0: The MTU of interface syz_tun 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. [ 101.385585][T12418] batman_adv: batadv0: Interface activated: syz_tun [ 101.397713][T12419] batman_adv: batadv0: Adding interface: bridge0 executing program executing program executing program executing program [ 101.404293][T12419] batman_adv: batadv0: The MTU of interface bridge0 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. [ 101.430991][T12419] batman_adv: batadv0: Interface activated: bridge0 executing program executing program [ 101.455048][T12421] batman_adv: batadv0: Adding interface: dummy0 [ 101.461379][T12421] batman_adv: batadv0: The MTU of interface dummy0 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. [ 101.487440][T12421] batman_adv: batadv0: Interface activated: dummy0 [ 101.498498][T12424] batman_adv: batadv0: Adding interface: ip6gretap0 executing program executing program [ 101.505280][T12424] batman_adv: batadv0: The MTU of interface ip6gretap0 is too small (1434) 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. [ 101.532077][T12424] batman_adv: batadv0: Interface activated: ip6gretap0 executing program [ 101.553122][T12427] batman_adv: batadv0: Adding interface: veth0 [ 101.559435][T12427] batman_adv: batadv0: The MTU of interface veth0 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. [ 101.571281][T12429] ===================================================== [ 101.586021][T12427] batman_adv: batadv0: Interface activated: veth0 [ 101.591493][T12429] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0xa9/0xb0 [ 101.591524][T12429] CPU: 1 PID: 12429 Comm: syz-executor087 Not tainted 5.4.0-rc8-syzkaller #0 [ 101.614101][T12429] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 101.622073][T12431] batman_adv: batadv0: Adding interface: bridge0 [ 101.624177][T12429] Call Trace: [ 101.630520][T12431] batman_adv: batadv0: The MTU of interface bridge0 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. [ 101.633772][T12429] dump_stack+0x1c9/0x220 [ 101.633792][T12429] kmsan_report+0x128/0x220 [ 101.633818][T12429] kmsan_internal_check_memory+0x178/0x440 [ 101.633848][T12429] kmsan_copy_to_user+0xa9/0xb0 [ 101.633866][T12429] copyout+0x16b/0x1f0 [ 101.633889][T12429] _copy_to_iter+0x35f/0x26f0 [ 101.633907][T12429] ? __kernel_text_address+0x24f/0x350 [ 101.633936][T12429] ? stack_trace_save+0x1b0/0x1b0 [ 101.633964][T12429] simple_copy_to_iter+0x92/0xb0 executing program executing program [ 101.633988][T12429] __skb_datagram_iter+0x24d/0xee0 [ 101.634006][T12429] ? skb_copy_datagram_iter+0x2b0/0x2b0 [ 101.634023][T12429] ? kmsan_internal_poison_shadow+0xac/0x110 [ 101.634037][T12429] ? kmem_cache_free+0x5ce/0x2c00 [ 101.634051][T12429] ? __fput+0x8b2/0xba0 [ 101.634066][T12429] ? do_syscall_64+0xdc/0x160 [ 101.634079][T12429] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 101.634103][T12429] skb_copy_datagram_iter+0x29c/0x2b0 [ 101.634132][T12429] tun_do_read+0x2522/0x2eb0 [ 101.634152][T12429] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 executing program [ 101.634197][T12429] ? arch_local_irq_disable+0x10/0x10 [ 101.634217][T12429] tun_chr_read_iter+0x229/0x460 [ 101.634245][T12429] ? tun_cleanup+0x60/0x60 [ 101.634260][T12429] __vfs_read+0xa67/0xc90 [ 101.634298][T12429] vfs_read+0x359/0x6f0 [ 101.634322][T12429] ksys_read+0x265/0x430 [ 101.634348][T12429] __se_sys_read+0x92/0xb0 [ 101.634370][T12429] __x64_sys_read+0x4a/0x70 [ 101.634387][T12429] do_syscall_64+0xb6/0x160 [ 101.634405][T12429] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 101.634418][T12429] RIP: 0033:0x402ac0 [ 101.634434][T12429] Code: 01 f0 ff ff 0f 83 a0 0d 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d ed 94 2d 00 00 75 14 b8 00 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 74 0d 00 00 c3 48 83 ec 08 e8 da 02 00 00 [ 101.634442][T12429] RSP: 002b:00007ffef5eb0418 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 101.634457][T12429] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000402ac0 [ 101.634467][T12429] RDX: 00000000000003e8 RSI: 00007ffef5eb0420 RDI: 00000000000000f0 executing program executing program [ 101.634475][T12429] RBP: 0000000000018c80 R08: 0000000000000000 R09: 0000000000000004 [ 101.634484][T12429] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 101.634492][T12429] R13: 0000000000403d50 R14: 0000000000000000 R15: 0000000000000000 [ 101.634511][T12429] [ 101.634516][T12429] Uninit was stored to memory at: [ 101.634531][T12429] kmsan_internal_chain_origin+0xb9/0x170 [ 101.634545][T12429] kmsan_memcpy_memmove_metadata+0x25c/0x2e0 [ 101.634559][T12429] kmsan_memcpy_metadata+0xb/0x10 [ 101.634572][T12429] __msan_memcpy+0x56/0x70 [ 101.634606][T12429] pskb_expand_head+0x38a/0x19f0 [ 101.659914][T12431] batman_adv: batadv0: Interface activated: bridge0 [ 101.664159][T12429] batadv_skb_head_push+0x23c/0x360 [ 101.664173][T12429] batadv_send_skb_packet+0x1a7/0x8c0 [ 101.664185][T12429] batadv_send_broadcast_skb+0x76/0x90 [ 101.664215][T12429] batadv_iv_send_outstanding_bat_ogm_packet+0x993/0xd50 [ 101.737716][T12432] batman_adv: batadv0: Adding interface: bond0 [ 101.739929][T12429] process_one_work+0x1572/0x1ef0 [ 101.745375][T12432] batman_adv: batadv0: The MTU of interface bond0 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. [ 101.749860][T12429] worker_thread+0x111b/0x2460 [ 101.756210][T12432] batman_adv: batadv0: Interface activated: bond0 [ 101.761194][T12429] kthread+0x4b5/0x4f0 [ 101.794564][T12434] batman_adv: batadv0: Adding interface: team0 [ 101.796749][T12429] ret_from_fork+0x35/0x40 [ 101.803237][T12434] batman_adv: batadv0: The MTU of interface team0 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. [ 101.806501][T12429] [ 101.826200][T12434] batman_adv: batadv0: Interface activated: team0 [ 101.834474][T12429] Uninit was created at: [ 101.834495][T12429] kmsan_save_stack_with_flags+0x3c/0x90 [ 101.834507][T12429] kmsan_alloc_page+0x140/0x330 [ 101.834522][T12429] __alloc_pages_nodemask+0x1421/0x5fd0 [ 101.834550][T12429] page_frag_alloc+0x3ae/0x910 [ 101.905623][T12435] batman_adv: batadv0: Adding interface: dummy0 [ 101.907809][T12429] __netdev_alloc_skb+0x672/0xb20 [ 101.914861][T12435] batman_adv: batadv0: The MTU of interface dummy0 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. [ 101.919659][T12429] batadv_iv_ogm_queue_add+0xf42/0x17b0 [ 101.925083][T12435] batman_adv: batadv0: Interface activated: dummy0 [ 101.930450][T12429] batadv_iv_ogm_schedule+0xc1c/0x1080 [ 101.966609][T12436] batman_adv: batadv0: Adding interface: veth0 [ 101.973759][T12429] batadv_iv_iface_enabled+0x37/0x40 [ 101.973772][T12429] batadv_hardif_enable_interface+0x1400/0x1720 [ 101.973787][T12429] batadv_softif_slave_add+0x15a/0x240 [ 101.973802][T12429] do_setlink+0x19e3/0x5e70 [ 101.973815][T12429] rtnl_newlink+0x2d60/0x38c0 [ 101.973828][T12429] rtnetlink_rcv_msg+0x115a/0x1580 [ 101.973841][T12429] netlink_rcv_skb+0x431/0x620 [ 101.973871][T12429] rtnetlink_rcv+0x50/0x60 [ 101.978651][T12436] batman_adv: batadv0: The MTU of interface veth0 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. [ 101.985011][T12429] netlink_unicast+0xf3e/0x1020 [ 101.985024][T12429] netlink_sendmsg+0x110f/0x1330 [ 101.985035][T12429] ___sys_sendmsg+0x14ff/0x1590 [ 101.985046][T12429] __se_sys_sendmsg+0x305/0x460 [ 101.985059][T12429] __x64_sys_sendmsg+0x4a/0x70 [ 101.985072][T12429] do_syscall_64+0xb6/0x160 [ 101.985086][T12429] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 101.985089][T12429] [ 101.985111][T12429] Bytes 52-53 of 146 are uninitialized [ 101.989162][T12436] batman_adv: batadv0: Interface activated: veth0 [ 101.995276][T12429] Memory access of size 146 starts at ffff8d5d768b2040 [ 101.995283][T12429] Data copied to user address 00007ffef5eb0420 [ 101.995288][T12429] ===================================================== [ 101.995293][T12429] Disabling lock debugging due to kernel taint [ 101.995302][T12429] Kernel panic - not syncing: panic_on_warn set ... [ 101.995318][T12429] CPU: 1 PID: 12429 Comm: syz-executor087 Tainted: G B 5.4.0-rc8-syzkaller #0 [ 101.995324][T12429] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 101.995329][T12429] Call Trace: [ 101.995348][T12429] dump_stack+0x1c9/0x220 [ 101.995370][T12429] panic+0x3c9/0xc1e [ 101.995411][T12429] kmsan_report+0x215/0x220 [ 101.995436][T12429] kmsan_internal_check_memory+0x178/0x440 [ 101.995463][T12429] kmsan_copy_to_user+0xa9/0xb0 [ 101.995478][T12429] copyout+0x16b/0x1f0 [ 101.995502][T12429] _copy_to_iter+0x35f/0x26f0 [ 101.995519][T12429] ? __kernel_text_address+0x24f/0x350 [ 101.995546][T12429] ? stack_trace_save+0x1b0/0x1b0 [ 101.995576][T12429] simple_copy_to_iter+0x92/0xb0 [ 101.995599][T12429] __skb_datagram_iter+0x24d/0xee0 [ 101.995616][T12429] ? skb_copy_datagram_iter+0x2b0/0x2b0 [ 101.995630][T12429] ? kmsan_internal_poison_shadow+0xac/0x110 [ 101.995644][T12429] ? kmem_cache_free+0x5ce/0x2c00 [ 101.995657][T12429] ? __fput+0x8b2/0xba0 [ 101.995670][T12429] ? do_syscall_64+0xdc/0x160 [ 101.995683][T12429] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 101.995708][T12429] skb_copy_datagram_iter+0x29c/0x2b0 [ 101.995736][T12429] tun_do_read+0x2522/0x2eb0 [ 101.995749][T12429] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 101.995795][T12429] ? arch_local_irq_disable+0x10/0x10 [ 101.995815][T12429] tun_chr_read_iter+0x229/0x460 [ 101.995843][T12429] ? tun_cleanup+0x60/0x60 [ 101.995857][T12429] __vfs_read+0xa67/0xc90 [ 101.995896][T12429] vfs_read+0x359/0x6f0 [ 101.995920][T12429] ksys_read+0x265/0x430 [ 101.995945][T12429] __se_sys_read+0x92/0xb0 [ 101.995967][T12429] __x64_sys_read+0x4a/0x70 [ 101.995983][T12429] do_syscall_64+0xb6/0x160 [ 101.996002][T12429] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 101.996014][T12429] RIP: 0033:0x402ac0 [ 101.996029][T12429] Code: 01 f0 ff ff 0f 83 a0 0d 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d ed 94 2d 00 00 75 14 b8 00 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 74 0d 00 00 c3 48 83 ec 08 e8 da 02 00 00 [ 101.996037][T12429] RSP: 002b:00007ffef5eb0418 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 101.996051][T12429] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000402ac0 [ 101.996060][T12429] RDX: 00000000000003e8 RSI: 00007ffef5eb0420 RDI: 00000000000000f0 [ 101.996069][T12429] RBP: 0000000000018c80 R08: 0000000000000000 R09: 0000000000000004 [ 101.996077][T12429] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 101.996086][T12429] R13: 0000000000403d50 R14: 0000000000000000 R15: 0000000000000000 [ 101.997370][T12429] Kernel Offset: 0x13400000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 102.527797][T12429] Rebooting in 86400 seconds..