[ 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 '10.128.0.112' (ECDSA) to the list of known hosts. 2021/05/06 00:30:22 parsed 1 programs 2021/05/06 00:30:29 executed programs: 0 syzkaller login: [ 307.768777][ T8422] chnl_net:caif_netlink_parms(): no params data found [ 307.818956][ T8422] bridge0: port 1(bridge_slave_0) entered blocking state [ 307.826219][ T8422] bridge0: port 1(bridge_slave_0) entered disabled state [ 307.833416][ T8422] device bridge_slave_0 entered promiscuous mode [ 307.840881][ T8422] bridge0: port 2(bridge_slave_1) entered blocking state [ 307.847971][ T8422] bridge0: port 2(bridge_slave_1) entered disabled state [ 307.855277][ T8422] device bridge_slave_1 entered promiscuous mode [ 307.865508][ T8422] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 307.875102][ T8422] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 307.888046][ T8422] team0: Port device team_slave_0 added [ 307.894189][ T8422] team0: Port device team_slave_1 added [ 307.902899][ T8422] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 307.909860][ T8422] 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. [ 307.935823][ T8422] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 307.946872][ T8422] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 307.953792][ T8422] 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. [ 307.979844][ T8422] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 307.995014][ T8422] device hsr_slave_0 entered promiscuous mode [ 308.001221][ T8422] device hsr_slave_1 entered promiscuous mode [ 308.030889][ T8422] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 308.038344][ T8422] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 308.051725][ T8422] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 308.059616][ T8422] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 308.070741][ T8422] bridge0: port 2(bridge_slave_1) entered blocking state [ 308.077766][ T8422] bridge0: port 2(bridge_slave_1) entered forwarding state [ 308.084989][ T8422] bridge0: port 1(bridge_slave_0) entered blocking state [ 308.092004][ T8422] bridge0: port 1(bridge_slave_0) entered forwarding state [ 308.110845][ T8422] 8021q: adding VLAN 0 to HW filter on device bond0 [ 308.119756][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 308.127688][ T4824] bridge0: port 1(bridge_slave_0) entered disabled state [ 308.135156][ T4824] bridge0: port 2(bridge_slave_1) entered disabled state [ 308.142551][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 308.151361][ T8422] 8021q: adding VLAN 0 to HW filter on device team0 [ 308.164804][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 308.172986][ T4824] bridge0: port 1(bridge_slave_0) entered blocking state [ 308.180030][ T4824] bridge0: port 1(bridge_slave_0) entered forwarding state [ 308.187404][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 308.195810][ T4824] bridge0: port 2(bridge_slave_1) entered blocking state [ 308.202822][ T4824] bridge0: port 2(bridge_slave_1) entered forwarding state [ 308.210557][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 308.218709][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 308.227111][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 308.235556][ T4838] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 308.245431][ T8422] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 308.256185][ T8422] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 308.263486][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 308.275128][ T8095] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 308.282590][ T8095] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 308.292021][ T8422] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 308.304233][ T8095] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 308.315189][ T4838] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 308.323226][ T4838] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 308.330667][ T4838] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 308.338877][ T8422] device veth0_vlan entered promiscuous mode [ 308.346937][ T8422] device veth1_vlan entered promiscuous mode [ 308.359021][ T8422] device veth0_macvtap entered promiscuous mode [ 308.365739][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 308.373344][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 308.381377][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 308.389586][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 308.398186][ T8422] device veth1_macvtap entered promiscuous mode [ 308.408255][ T8422] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 308.415551][ T4838] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 308.425309][ T8422] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 308.433430][ T8422] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 308.442338][ T8422] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 308.451172][ T8422] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 308.460008][ T8422] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 308.469296][ T4838] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 308.500362][ T58] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 308.508449][ T58] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 308.516171][ T8143] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 308.524131][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 308.524862][ T8143] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 308.539230][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 308.624864][ T782] ------------[ cut here ]------------ [ 308.630453][ T782] hook not found, pf 3 num 0 [ 308.630713][ T782] WARNING: CPU: 0 PID: 782 at net/netfilter/core.c:480 __nf_unregister_net_hook+0xef/0x280 [ 308.646016][ T782] Modules linked in: [ 308.649907][ T782] CPU: 0 PID: 782 Comm: kworker/u4:3 Not tainted 5.12.0-syzkaller #0 [ 308.658394][ T782] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 308.668726][ T782] Workqueue: netns cleanup_net [ 308.673505][ T782] RIP: 0010:__nf_unregister_net_hook+0xef/0x280 [ 308.680347][ T782] Code: a0 b2 fd 84 db 0f 85 9b 00 00 00 e8 2b 99 b2 fd 41 8b 54 24 1c 89 ee 48 c7 c7 a9 dc 50 85 c6 05 1e 48 c6 02 01 e8 1c 59 93 00 <0f> 0b eb 78 e8 08 99 b2 fd 48 8b 04 24 48 c1 e3 04 89 ee 4c 01 f3 [ 308.700298][ T782] RSP: 0018:ffffc90002417d80 EFLAGS: 00010282 [ 308.706577][ T782] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 308.714892][ T782] RDX: ffff888102472000 RSI: ffffffff812af093 RDI: 0000000000000003 [ 308.722858][ T782] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 308.731236][ T782] R10: ffffffff812ae4f0 R11: 0000000000000000 R12: ffff8881431b7b00 [ 308.739395][ T782] R13: ffff8881018a4a40 R14: ffff888119643d00 R15: 0000000000000001 [ 308.747540][ T782] FS: 0000000000000000(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000 [ 308.756651][ T782] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 308.763228][ T782] CR2: 00007f508a9d3000 CR3: 000000010ca6c000 CR4: 00000000001506f0 [ 308.771509][ T782] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 308.780249][ T782] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 308.788503][ T782] Call Trace: [ 308.791780][ T782] nf_unregister_net_hooks+0xb8/0xe0 [ 308.797343][ T782] arpt_unregister_table_pre_exit+0x46/0x60 [ 308.803238][ T782] ? arptable_filter_net_exit+0x20/0x20 [ 308.809327][ T782] cleanup_net+0x277/0x4d0 [ 308.813752][ T782] process_one_work+0x2c9/0x600 [ 308.818909][ T782] worker_thread+0x59/0x5d0 [ 308.823415][ T782] ? rescuer_thread+0x560/0x560 [ 308.828730][ T782] kthread+0x178/0x1b0 [ 308.832806][ T782] ? __kthread_bind_mask+0x90/0x90 [ 308.838367][ T782] ret_from_fork+0x1f/0x30 [ 308.842789][ T782] ---[ end trace 549c72a638278aaf ]--- [ 308.855388][ T782] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 311.657530][ T782] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 2021/05/06 00:30:37 executed programs: 1 [ 314.257355][ T782] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 314.317609][ T782] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 315.105384][ T782] device hsr_slave_0 left promiscuous mode [ 315.111526][ T782] device hsr_slave_1 left promiscuous mode [ 315.117821][ T782] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 315.125200][ T782] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 315.132457][ T782] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 315.139909][ T782] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 315.147206][ T782] device bridge_slave_1 left promiscuous mode [ 315.153356][ T782] bridge0: port 2(bridge_slave_1) entered disabled state [ 315.160749][ T782] device bridge_slave_0 left promiscuous mode [ 315.166899][ T782] bridge0: port 1(bridge_slave_0) entered disabled state [ 315.174630][ T782] device veth1_macvtap left promiscuous mode [ 315.180723][ T782] device veth0_macvtap left promiscuous mode [ 315.186771][ T782] device veth1_vlan left promiscuous mode [ 315.192477][ T782] device veth0_vlan left promiscuous mode [ 315.357517][ T782] team0 (unregistering): Port device team_slave_1 removed [ 315.365598][ T782] team0 (unregistering): Port device team_slave_0 removed [ 315.373281][ T782] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 315.383123][ T782] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 315.396762][ T782] bond0 (unregistering): Released all slaves [ 315.723853][ T3239] ieee802154 phy0 wpan0: encryption failed: -22 [ 315.730106][ T3239] ieee802154 phy1 wpan1: encryption failed: -22 [ 316.016824][ T8709] chnl_net:caif_netlink_parms(): no params data found [ 316.035363][ T8709] bridge0: port 1(bridge_slave_0) entered blocking state [ 316.042400][ T8709] bridge0: port 1(bridge_slave_0) entered disabled state [ 316.049803][ T8709] device bridge_slave_0 entered promiscuous mode [ 316.057264][ T8709] bridge0: port 2(bridge_slave_1) entered blocking state [ 316.064349][ T8709] bridge0: port 2(bridge_slave_1) entered disabled state [ 316.071569][ T8709] device bridge_slave_1 entered promiscuous mode [ 316.082055][ T8709] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 316.092068][ T8709] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 316.104940][ T8709] team0: Port device team_slave_0 added [ 316.111227][ T8709] team0: Port device team_slave_1 added [ 316.120566][ T8709] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 316.127533][ T8709] 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. [ 316.153502][ T8709] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 316.164817][ T8709] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 316.171742][ T8709] 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. [ 316.197721][ T8709] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 316.213321][ T8709] device hsr_slave_0 entered promiscuous mode [ 316.219591][ T8709] device hsr_slave_1 entered promiscuous mode [ 316.259316][ T8709] 8021q: adding VLAN 0 to HW filter on device bond0 [ 316.268768][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 316.277403][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 316.284941][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 316.293350][ T8709] 8021q: adding VLAN 0 to HW filter on device team0 [ 316.301552][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 316.309916][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 316.318132][ T4824] bridge0: port 1(bridge_slave_0) entered blocking state [ 316.325155][ T4824] bridge0: port 1(bridge_slave_0) entered forwarding state [ 316.332815][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 316.341216][ T4838] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 316.349603][ T4838] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 316.357838][ T4838] bridge0: port 2(bridge_slave_1) entered blocking state [ 316.364869][ T4838] bridge0: port 2(bridge_slave_1) entered forwarding state [ 316.380950][ T8709] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 316.391303][ T8709] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 316.403090][ T4838] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 316.411282][ T4838] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 316.419389][ T4838] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 316.427380][ T4838] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 316.436159][ T4838] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 316.443404][ T4838] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 316.456448][ T8709] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 316.463841][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 316.471148][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 316.533607][ T4838] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 316.544339][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 316.552269][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 316.560092][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 316.568718][ T8709] device veth0_vlan entered promiscuous mode [ 316.577606][ T8709] device veth1_vlan entered promiscuous mode [ 316.590235][ T4838] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 316.598050][ T4838] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 316.605955][ T4838] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 316.615144][ T8709] device veth0_macvtap entered promiscuous mode [ 316.622812][ T8709] device veth1_macvtap entered promiscuous mode [ 316.633689][ T8709] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 316.640894][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 316.649845][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 316.658905][ T8709] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 316.666306][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 316.697994][ T782] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 316.707150][ T782] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 316.711751][ T58] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 316.722234][ T35] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 316.728778][ T58] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 316.737560][ T8856] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 317.388187][ T58] device hsr_slave_0 left promiscuous mode [ 317.399141][ T58] device hsr_slave_1 left promiscuous mode [ 317.412397][ T58] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 317.419897][ T58] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 317.428723][ T58] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 317.436658][ T58] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 317.444278][ T58] device bridge_slave_1 left promiscuous mode [ 317.450395][ T58] bridge0: port 2(bridge_slave_1) entered disabled state [ 317.458270][ T58] device bridge_slave_0 left promiscuous mode [ 317.464549][ T58] bridge0: port 1(bridge_slave_0) entered disabled state [ 317.472762][ T58] device veth1_macvtap left promiscuous mode [ 317.478959][ T58] device veth0_macvtap left promiscuous mode [ 317.485265][ T58] device veth1_vlan left promiscuous mode [ 317.490978][ T58] device veth0_vlan left promiscuous mode [ 317.751536][ T58] team0 (unregistering): Port device team_slave_1 removed [ 317.761312][ T58] team0 (unregistering): Port device team_slave_0 removed [ 317.770120][ T58] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 317.780021][ T58] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 317.801546][ T58] bond0 (unregistering): Released all slaves [ 321.909402][ T8961] kmemleak: 3 new suspected memory leaks (see /sys/kernel/debug/kmemleak) [ 323.929980][ T8961] kmemleak: 2 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff888119643d00 (size 64): comm "syz-executor.0", pid 8422, jiffies 4294968114 (age 15.440s) hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 90 be a5 83 ff ff ff ff ................ 80 05 0d 19 81 88 ff ff 00 94 ac 13 81 88 ff ff ................ backtrace: [] kvmalloc_node+0x61/0xf0 [] nf_hook_entries_grow+0x31b/0x370 [] __nf_register_net_hook+0x8d/0x290 [] nf_register_net_hook+0xbf/0x100 [] nf_register_net_hooks+0x59/0xc0 [] arpt_register_table+0x152/0x1e0 [] arptable_filter_table_init+0x3d/0x60 [] xt_find_table_lock+0x189/0x290 [] xt_request_find_table_lock+0x27/0xb0 [] get_info+0xd2/0x430 [] do_arpt_get_ctl+0x224/0x520 [] nf_getsockopt+0x57/0x80 [] ip_getsockopt+0xfa/0x140 [] tcp_getsockopt+0x4b/0x80 [] __sys_getsockopt+0x133/0x2f0 [] __x64_sys_getsockopt+0x22/0x30 BUG: memory leak unreferenced object 0xffff8881196438c0 (size 64): comm "syz-executor.0", pid 8422, jiffies 4294968114 (age 15.440s) hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 90 be a5 83 ff ff ff ff ................ 80 05 0d 19 81 88 ff ff 50 94 ac 13 81 88 ff ff ........P....... backtrace: [] kvmalloc_node+0x61/0xf0 [] nf_hook_entries_grow+0x31b/0x370 [] __nf_register_net_hook+0x8d/0x290 [] nf_register_net_hook+0xbf/0x100 [] nf_register_net_hooks+0x59/0xc0 [] arpt_register_table+0x152/0x1e0 [] arptable_filter_table_init+0x3d/0x60 [] xt_find_table_lock+0x189/0x290 [] xt_request_find_table_lock+0x27/0xb0 [] get_info+0xd2/0x430 [] do_arpt_get_ctl+0x224/0x520 [] nf_getsockopt+0x57/0x80 [] ip_getsockopt+0xfa/0x140 [] tcp_getsockopt+0x4b/0x80 [] __sys_getsockopt+0x133/0x2f0 [] __x64_sys_getsockopt+0x22/0x30 BUG: memory leak unreferenced object 0xffff8881110dbb00 (size 64): comm "kworker/u4:3", pid 782, jiffies 4294968847 (age 8.110s) hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 90 be a5 83 ff ff ff ff ................ 80 05 0d 19 81 88 ff ff 28 94 ac 13 81 88 ff ff ........(....... backtrace: [] kvmalloc_node+0x61/0xf0 [] __nf_hook_entries_try_shrink+0xfd/0x210 [] __nf_unregister_net_hook+0x17b/0x280 [] nf_unregister_net_hook+0x82/0xb0 [] ops_exit_list+0x41/0x80 [] cleanup_net+0x2c1/0x4d0 [] process_one_work+0x2c9/0x600 [] worker_thread+0x59/0x5d0 [] kthread+0x178/0x1b0 [] ret_from_fork+0x1f/0x30