[ 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 syzkaller login: [ 36.207514][ T8306] sshd (8306) used greatest stack depth: 11128 bytes left Warning: Permanently added '10.128.0.127' (ECDSA) to the list of known hosts. [ 178.895656][ T8479] IPVS: ftp: loaded support on port[0] = 21 [ 178.926539][ T8479] chnl_net:caif_netlink_parms(): no params data found [ 178.946287][ T8479] bridge0: port 1(bridge_slave_0) entered blocking state [ 178.954387][ T8479] bridge0: port 1(bridge_slave_0) entered disabled state [ 178.961745][ T8479] device bridge_slave_0 entered promiscuous mode [ 178.969018][ T8479] bridge0: port 2(bridge_slave_1) entered blocking state [ 178.976104][ T8479] bridge0: port 2(bridge_slave_1) entered disabled state [ 178.983542][ T8479] device bridge_slave_1 entered promiscuous mode [ 178.994341][ T8479] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 179.004315][ T8479] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 179.017376][ T8479] team0: Port device team_slave_0 added [ 179.023670][ T8479] team0: Port device team_slave_1 added [ 179.032821][ T8479] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 179.039889][ T8479] 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. [ 179.065800][ T8479] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 179.077355][ T8479] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 179.084371][ T8479] 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. [ 179.110301][ T8479] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 179.125960][ T8479] device hsr_slave_0 entered promiscuous mode [ 179.132171][ T8479] device hsr_slave_1 entered promiscuous mode [ 179.162712][ T8479] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 179.170679][ T8479] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 179.178482][ T8479] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 179.186292][ T8479] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 179.198149][ T8479] bridge0: port 2(bridge_slave_1) entered blocking state [ 179.205223][ T8479] bridge0: port 2(bridge_slave_1) entered forwarding state [ 179.212424][ T8479] bridge0: port 1(bridge_slave_0) entered blocking state [ 179.219455][ T8479] bridge0: port 1(bridge_slave_0) entered forwarding state [ 179.239341][ T8479] 8021q: adding VLAN 0 to HW filter on device bond0 [ 179.248354][ T3777] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 179.256625][ T3777] bridge0: port 1(bridge_slave_0) entered disabled state [ 179.264203][ T3777] bridge0: port 2(bridge_slave_1) entered disabled state [ 179.271587][ T3777] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 179.280913][ T8479] 8021q: adding VLAN 0 to HW filter on device team0 [ 179.289322][ T3777] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 179.297845][ T3777] bridge0: port 1(bridge_slave_0) entered blocking state [ 179.304888][ T3777] bridge0: port 1(bridge_slave_0) entered forwarding state [ 179.314210][ T3777] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 179.322345][ T3777] bridge0: port 2(bridge_slave_1) entered blocking state [ 179.329378][ T3777] bridge0: port 2(bridge_slave_1) entered forwarding state [ 179.343840][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 179.352037][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 179.360414][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 179.368845][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 179.377115][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 179.386472][ T8479] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 179.397677][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 179.405181][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 179.414898][ T8479] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 179.431406][ T8479] device veth0_vlan entered promiscuous mode [ 179.437970][ T3254] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 179.446454][ T3254] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 179.454807][ T3254] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 179.462227][ T3254] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 179.472193][ T8479] device veth1_vlan entered promiscuous mode [ 179.484542][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 179.492284][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 179.500160][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 179.509482][ T8479] device veth0_macvtap entered promiscuous mode [ 179.517306][ T8479] device veth1_macvtap entered promiscuous mode [ 179.528227][ T8479] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 179.535630][ T3254] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 179.544187][ T3254] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 179.553723][ T8479] batman_adv: batadv0: Interface activated: batadv_slave_1 executing program [ 179.561008][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 179.570680][ T8479] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 179.579554][ T8479] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 179.588363][ T8479] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 179.597222][ T8479] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory executing program [ 232.987326][ T8736] device bridge_slave_1 left promiscuous mode [ 232.993493][ T8736] bridge0: port 2(bridge_slave_1) entered disabled state [ 233.000798][ T8736] device bridge_slave_0 left promiscuous mode [ 233.006981][ T8736] bridge0: port 1(bridge_slave_0) entered disabled state write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 234.095365][ T8479] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) [ 239.108261][ T8479] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff888113f35440 (size 64): comm "syz-executor683", pid 8729, jiffies 4294960051 (age 13.510s) 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 01 00 00 00 01 02 00 04 ................ backtrace: [<00000000815375e7>] mrp_request_join+0x153/0x260 [<0000000088eb4b90>] vlan_mvrp_request_join+0x96/0xa0 [<0000000060dfce19>] vlan_dev_open+0x1e7/0x330 [<00000000b87859c5>] __dev_open+0x175/0x260 [<00000000ff948be9>] __dev_change_flags+0x2fd/0x390 [<0000000062ee3833>] rtnl_configure_link+0x64/0x130 [<00000000a19edecf>] __rtnl_newlink+0xa7e/0xdc0 [<0000000085a4c7a0>] rtnl_newlink+0x49/0x70 [<000000001f83ca0d>] rtnetlink_rcv_msg+0x1fc/0x520 [<00000000a28aabae>] netlink_rcv_skb+0x87/0x1d0 [<00000000481e9b96>] netlink_unicast+0x392/0x4c0 [<000000002b9af0bd>] netlink_sendmsg+0x368/0x6a0 [<00000000a2c6e234>] sock_sendmsg+0x56/0x80 [<0000000002b4efeb>] ____sys_sendmsg+0x36c/0x390 [<000000001973710c>] ___sys_sendmsg+0x8b/0xd0 [<000000000441c39b>] __sys_sendmsg+0x88/0x100 BUG: memory leak unreferenced object 0xffff888113cb6180 (size 64): comm "syz-executor683", pid 8736, jiffies 4294960571 (age 8.310s) 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 01 00 00 00 01 02 00 04 ................ backtrace: [<00000000815375e7>] mrp_request_join+0x153/0x260 [<0000000088eb4b90>] vlan_mvrp_request_join+0x96/0xa0 [<0000000060dfce19>] vlan_dev_open+0x1e7/0x330 [<00000000b87859c5>] __dev_open+0x175/0x260 [<00000000ff948be9>] __dev_change_flags+0x2fd/0x390 [<0000000062ee3833>] rtnl_configure_link+0x64/0x130 [<00000000a19edecf>] __rtnl_newlink+0xa7e/0xdc0 [<0000000085a4c7a0>] rtnl_newlink+0x49/0x70 [<000000001f83ca0d>] rtnetlink_rcv_msg+0x1fc/0x520 [<00000000a28aabae>] netlink_rcv_skb+0x87/0x1d0 [<00000000481e9b96>] netlink_unicast+0x392/0x4c0 [<000000002b9af0bd>] netlink_sendmsg+0x368/0x6a0 [<00000000a2c6e234>] sock_sendmsg+0x56/0x80 [<0000000002b4efeb>] ____sys_sendmsg+0x36c/0x390 [<000000001973710c>] ___sys_sendmsg+0x8b/0xd0 [<000000000441c39b>] __sys_sendmsg+0x88/0x100 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory