[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.164' (ECDSA) to the list of known hosts. syzkaller login: [ 67.120038][ T24] audit: type=1400 audit(1597614717.761:8): avc: denied { execmem } for pid=6493 comm="syz-executor831" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 74.354888][ T6494] IPVS: ftp: loaded support on port[0] = 21 [ 74.376439][ T6494] chnl_net:caif_netlink_parms(): no params data found [ 74.417568][ T6494] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.424821][ T6494] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.432262][ T6494] device bridge_slave_0 entered promiscuous mode [ 74.438941][ T6494] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.446519][ T6494] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.453863][ T6494] device bridge_slave_1 entered promiscuous mode [ 74.463307][ T6494] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.472795][ T6494] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.484889][ T6494] team0: Port device team_slave_0 added [ 74.490992][ T6494] team0: Port device team_slave_1 added [ 74.499299][ T6494] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.506415][ T6494] 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. [ 74.532382][ T6494] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.543380][ T6494] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.550285][ T6494] 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. [ 74.576341][ T6494] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 74.590777][ T6494] device hsr_slave_0 entered promiscuous mode [ 74.596932][ T6494] device hsr_slave_1 entered promiscuous mode [ 74.623053][ T6494] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 74.630412][ T6494] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 74.639952][ T6494] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 74.647886][ T6494] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 74.659165][ T6494] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.666270][ T6494] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.673480][ T6494] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.680467][ T6494] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.695629][ T6494] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.704355][ T6695] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 74.712527][ T6695] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.719619][ T6695] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.727072][ T6695] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 74.735582][ T6494] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.743374][ T2910] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.751566][ T2910] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.758563][ T2910] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.771334][ T6695] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 74.779440][ T6695] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.786454][ T6695] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.794273][ T6695] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 74.802566][ T6695] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 74.810494][ T6695] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.819683][ T6494] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 74.830310][ T6494] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 74.837911][ T3724] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 74.845368][ T3724] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.855823][ T2910] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.863300][ T2910] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.872108][ T6494] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.881992][ T3724] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 74.893514][ T6494] device veth0_vlan entered promiscuous mode [ 74.900807][ T2910] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 74.908632][ T2910] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 74.916219][ T2910] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 74.923727][ T6494] device veth1_vlan entered promiscuous mode [ 74.929852][ T2910] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 74.941282][ T3724] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 74.948916][ T3724] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 74.957789][ T6494] device veth0_macvtap entered promiscuous mode [ 74.965095][ T6494] device veth1_macvtap entered promiscuous mode [ 74.974238][ T6494] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 74.981479][ T2910] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 74.989812][ T2910] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 74.998618][ T6494] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 75.005966][ T3724] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 75.014991][ T6494] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 75.023831][ T6494] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.032485][ T6494] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.041149][ T6494] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.079237][ T6715] device vlan2 entered promiscuous mode [ 75.084855][ T6715] device batadv0 entered promiscuous mode [ 75.090947][ T6715] device batadv0 left promiscuous mode executing program [ 80.482212][ T6720] device vlan2 entered promiscuous mode [ 80.487775][ T6720] device batadv0 entered promiscuous mode [ 80.494152][ T6720] device batadv0 left promiscuous mode [ 81.630885][ T6494] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff888115118700 (size 64): comm "syz-executor831", pid 6715, jiffies 4294944782 (age 12.980s) hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 08 00 00 00 01 02 0b 00 ................ backtrace: [<00000000382a36c7>] garp_request_join+0x119/0x200 [<000000007d455044>] vlan_gvrp_request_join+0x85/0x90 [<00000000464ea25d>] vlan_dev_open+0x14e/0x260 [<000000004a50aab2>] __dev_open+0x12e/0x1f0 [<000000008778eb73>] __dev_change_flags+0x25a/0x2e0 [<00000000374812fd>] rtnl_configure_link+0x51/0x100 [<00000000f22c7bbe>] __rtnl_newlink+0x90d/0xbc0 [<00000000c469c322>] rtnl_newlink+0x49/0x70 [<0000000055a15941>] rtnetlink_rcv_msg+0x17e/0x460 [<00000000274ae768>] netlink_rcv_skb+0x5b/0x180 [<00000000d5bf5f0c>] netlink_unicast+0x2b6/0x3c0 [<000000008f615fb9>] netlink_sendmsg+0x2ba/0x570 [<00000000c78bce06>] sock_sendmsg+0x4c/0x60 [<00000000a9e590f3>] ____sys_sendmsg+0x2c4/0x2f0 [<00000000dc299a72>] ___sys_sendmsg+0x81/0xc0 [<00000000957c5cfc>] __sys_sendmsg+0x77/0xe0