[ 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 '10.128.0.228' (ECDSA) to the list of known hosts. syzkaller login: [ 51.807498][ T8465] IPVS: ftp: loaded support on port[0] = 21 [ 51.835418][ T8465] chnl_net:caif_netlink_parms(): no params data found [ 51.856094][ T8465] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.863539][ T8465] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.871725][ T8465] device bridge_slave_0 entered promiscuous mode [ 51.879045][ T8465] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.886698][ T8465] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.894640][ T8465] device bridge_slave_1 entered promiscuous mode [ 51.905718][ T8465] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 51.916147][ T8465] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 51.931809][ T8465] team0: Port device team_slave_0 added [ 51.938468][ T8465] team0: Port device team_slave_1 added [ 51.948346][ T8465] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 51.955380][ T8465] 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. [ 51.984193][ T8465] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 51.996096][ T8465] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 52.003989][ T8465] 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. [ 52.033108][ T8465] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 52.049752][ T8465] device hsr_slave_0 entered promiscuous mode [ 52.057678][ T8465] device hsr_slave_1 entered promiscuous mode [ 52.089244][ T8465] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 52.098614][ T8465] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 52.106946][ T8465] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 52.115579][ T8465] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 52.128057][ T8465] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.135797][ T8465] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.144213][ T8465] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.152397][ T8465] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.172143][ T8465] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.181903][ T3737] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.190837][ T3737] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.198675][ T3737] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.207072][ T3737] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 52.216544][ T8465] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.225136][ T8386] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.234113][ T8386] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.241282][ T8386] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.258331][ T8465] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 52.271068][ T8465] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 52.283003][ T8386] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.292196][ T8386] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.299737][ T8386] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.307686][ T8386] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.317361][ T8386] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.326334][ T8386] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.334658][ T8386] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.344117][ T8386] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 52.352026][ T8386] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 52.364543][ T8465] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 52.372789][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 52.380528][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 52.394200][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 52.407387][ T8465] device veth0_vlan entered promiscuous mode [ 52.414435][ T8386] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 52.422782][ T8386] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 52.431689][ T8386] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 52.441538][ T8465] device veth1_vlan entered promiscuous mode [ 52.454067][ T8386] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 52.462048][ T8386] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 52.470643][ T8386] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 52.480526][ T8465] device veth0_macvtap entered promiscuous mode [ 52.488705][ T8465] device veth1_macvtap entered promiscuous mode [ 52.500279][ T8465] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 52.507681][ T8386] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 52.517242][ T8386] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 52.526591][ T8465] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 52.534550][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 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 [ 52.544579][ T8465] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.554246][ T8465] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.563130][ T8465] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.572896][ T8465] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.593034][ T8672] netlink: 'syz-executor721': attribute type 4 has an invalid length. 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 [ 58.304499][ T8673] netlink: 'syz-executor721': attribute type 4 has an invalid length. [ 59.557982][ T8465] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff888113a351a0 (size 32): comm "syz-executor721", pid 8672, jiffies 4294942526 (age 13.680s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 01 00 00 00 00 00 00 00 00 00 00 00 00 00 02 00 ................ backtrace: [<00000000fe3f8ac7>] ip_mc_add_src+0x348/0x450 [<000000000fc21bd2>] ip_mc_source+0x3d4/0x610 [<00000000d7861f1c>] ip_setsockopt+0x15d8/0x1f70 [<000000000e92c561>] tcp_setsockopt+0x70/0x13f0 [<000000004b9c6f8a>] __sys_setsockopt+0x1b0/0x360 [<0000000077006b74>] __x64_sys_setsockopt+0x22/0x30 [<00000000eaff8cfa>] do_syscall_64+0x2d/0x70 [<00000000ee0ce4f4>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 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