syzkaller login: [ 59.128660][ T3139] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 59.144985][ T3139] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 62.212271][ T3139] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:51727' (ECDSA) to the list of known hosts. 1970/01/01 00:01:17 fuzzer started 1970/01/01 00:01:19 connecting to host at localhost:40927 1970/01/01 00:01:19 checking machine... 1970/01/01 00:01:19 checking revisions... 1970/01/01 00:01:19 testing simple program... executing program [ 83.035288][ T3301] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 83.057522][ T3301] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 84.169628][ T3301] device hsr_slave_0 entered promiscuous mode [ 84.213935][ T3301] device hsr_slave_1 entered promiscuous mode [ 85.186197][ T3301] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 85.246295][ T3301] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 85.313573][ T3301] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 85.399292][ T3301] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 86.484797][ T3301] 8021q: adding VLAN 0 to HW filter on device bond0 [ 86.557637][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 86.565955][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 87.151589][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 87.156373][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 87.194337][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 87.199408][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 87.237000][ T3484] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 87.287061][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 87.412568][ T2913] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 87.417666][ T2913] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 87.455579][ T3506] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 87.463630][ T3506] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 87.497954][ T3301] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 87.630187][ T3506] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 87.636436][ T3506] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 88.874744][ T2913] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 88.879982][ T2913] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 89.487140][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 89.497858][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 89.521756][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 89.527406][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 89.546813][ T3301] device veth0_vlan entered promiscuous mode [ 89.616499][ T3301] device veth1_vlan entered promiscuous mode [ 89.798734][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 89.804558][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 89.809502][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 89.819843][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 89.854904][ T3301] device veth0_macvtap entered promiscuous mode [ 89.895435][ T3301] device veth1_macvtap entered promiscuous mode [ 89.904908][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 89.913707][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 90.041001][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 90.046699][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 90.096379][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 90.104530][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 90.138609][ T3301] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 90.139544][ T3301] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 90.140362][ T3301] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 90.147825][ T3301] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 90.647070][ T3301] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation 1970/01/01 00:01:30 building call list... [ 91.138648][ T46] ------------[ cut here ]------------ [ 91.139174][ T46] hook not found, pf 3 num 0 [ 91.139686][ T46] WARNING: CPU: 1 PID: 46 at net/netfilter/core.c:480 __nf_unregister_net_hook+0xac/0x1d0 [ 91.141836][ T46] Modules linked in: [ 91.142557][ T46] CPU: 1 PID: 46 Comm: kworker/u4:2 Not tainted 5.12.0-syzkaller-13670-g5e321ded302d #0 [ 91.143301][ T46] Hardware name: linux,dummy-virt (DT) [ 91.144874][ T46] Workqueue: netns cleanup_net [ 91.146413][ T46] pstate: 60400009 (nZCv daif +PAN -UAO -TCO BTYPE=--) [ 91.147219][ T46] pc : __nf_unregister_net_hook+0xac/0x1d0 [ 91.147696][ T46] lr : __nf_unregister_net_hook+0xac/0x1d0 [ 91.148161][ T46] sp : ffff800012cdbc80 [ 91.148518][ T46] x29: ffff800012cdbc80 x28: f0ff000003018000 [ 91.149164][ T46] x27: ffff800012739810 x26: ffff8000128f3cc0 [ 91.149758][ T46] x25: ffff8000128f3e40 x24: f6ff000009724800 [ 91.150792][ T46] x23: fcff0000061a09f0 x22: fcff0000061a0000 [ 91.151675][ T46] x21: ffff8000128fbe10 x20: 0000000000000003 [ 91.152322][ T46] x19: fcff000005a34400 x18: 00000000fffffffe [ 91.153103][ T46] x17: 0000000000000000 x16: 0000000000000000 [ 91.153704][ T46] x15: 0000000000000020 x14: ffffffffffffffff [ 91.154303][ T46] x13: 00000000000002fa x12: ffff800012cdb950 [ 91.154965][ T46] x11: ffff8000127f0d90 x10: ffff80001274cc10 [ 91.155640][ T46] x9 : ffff8000127ec620 x8 : ffff80001273c620 [ 91.156329][ T46] x7 : ffff8000127ec620 x6 : fffffffffffcbde0 [ 91.156923][ T46] x5 : ffff00007fbd0948 x4 : 0000000000015ff5 [ 91.157509][ T46] x3 : 0000000000000001 x2 : 0000000000000000 [ 91.158104][ T46] x1 : 0000000000000000 x0 : f4ff0000032f2dc0 [ 91.158860][ T46] Call trace: [ 91.159210][ T46] __nf_unregister_net_hook+0xac/0x1d0 [ 91.159676][ T46] nf_unregister_net_hooks+0x88/0xac [ 91.160126][ T46] arpt_unregister_table_pre_exit+0x40/0x50 [ 91.160861][ T46] arptable_filter_net_pre_exit+0x20/0x2c [ 91.161742][ T46] cleanup_net+0x200/0x410 [ 91.162225][ T46] process_one_work+0x1d8/0x364 [ 91.162652][ T46] worker_thread+0x70/0x434 [ 91.163056][ T46] kthread+0x174/0x180 [ 91.163454][ T46] ret_from_fork+0x10/0x34 [ 91.163997][ T46] ---[ end trace 997a7117f1883f90 ]--- [ 91.271881][ T46] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 91.507513][ T46] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 91.728991][ T46] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 92.004239][ T46] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 94.332576][ T46] device hsr_slave_0 left promiscuous mode [ 94.383670][ T46] device hsr_slave_1 left promiscuous mode [ 94.485803][ T46] device veth1_macvtap left promiscuous mode [ 94.486912][ T46] device veth0_macvtap left promiscuous mode [ 94.488616][ T46] device veth1_vlan left promiscuous mode [ 94.489337][ T46] device veth0_vlan left promiscuous mode executing program [ 96.017378][ T46] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 96.097141][ T46] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 96.472928][ T46] bond0 (unregistering): Released all slaves [ 97.514848][ T46] ================================================================== [ 97.515530][ T46] BUG: KASAN: invalid-access in hooks_validate+0x38/0x7c [ 97.516206][ T46] Read at addr f6ff000009724748 by task kworker/u4:2/46 [ 97.516783][ T46] Pointer tag: [f6], memory tag: [fe] [ 97.517243][ T46] [ 97.517856][ T46] CPU: 1 PID: 46 Comm: kworker/u4:2 Tainted: G W 5.12.0-syzkaller-13670-g5e321ded302d #0 [ 97.518622][ T46] Hardware name: linux,dummy-virt (DT) [ 97.519082][ T46] Workqueue: netns cleanup_net [ 97.519612][ T46] Call trace: [ 97.519918][ T46] dump_backtrace+0x0/0x1b0 [ 97.520576][ T46] show_stack+0x18/0x24 [ 97.521077][ T46] dump_stack+0xd0/0x12c [ 97.521471][ T46] print_address_description+0x70/0x2ac [ 97.522045][ T46] kasan_report+0x134/0x380 [ 97.522501][ T46] __do_kernel_fault+0x1a8/0x1dc [ 97.522939][ T46] do_tag_check_fault+0x74/0x90 [ 97.523506][ T46] do_mem_abort+0x44/0xbc [ 97.523916][ T46] el1_abort+0x40/0x60 [ 97.524332][ T46] el1_sync_handler+0xac/0xd0 [ 97.524742][ T46] el1_sync+0x70/0x100 [ 97.525256][ T46] hooks_validate+0x38/0x7c [ 97.525727][ T46] __nf_unregister_net_hook+0x114/0x1d0 [ 97.526222][ T46] nf_unregister_net_hook+0x64/0x74 [ 97.526747][ T46] clusterip_net_exit+0x60/0x7c [ 97.527220][ T46] ops_exit_list+0x44/0x80 [ 97.527821][ T46] cleanup_net+0x23c/0x410 [ 97.528249][ T46] process_one_work+0x1d8/0x364 [ 97.528675][ T46] worker_thread+0x70/0x434 [ 97.529085][ T46] kthread+0x174/0x180 [ 97.529476][ T46] ret_from_fork+0x10/0x34 [ 97.529971][ T46] [ 97.530447][ T46] Allocated by task 3301: [ 97.531011][ T46] kasan_save_stack+0x28/0x5c [ 97.531542][ T46] __kasan_kmalloc+0xc8/0x100 [ 97.531967][ T46] allocate_cgrp_cset_links+0x98/0x100 [ 97.532507][ T46] find_css_set+0x210/0x640 [ 97.532916][ T46] cgroup_migrate_prepare_dst+0x5c/0x234 [ 97.533363][ T46] cgroup_attach_task+0xbc/0x11c [ 97.533781][ T46] __cgroup1_procs_write.constprop.0+0x128/0x170 [ 97.534257][ T46] cgroup1_procs_write+0x14/0x20 [ 97.534677][ T46] cgroup_file_write+0x94/0x1a0 [ 97.535098][ T46] kernfs_fop_write_iter+0x128/0x1c0 [ 97.535546][ T46] new_sync_write+0xe8/0x184 [ 97.535965][ T46] vfs_write+0x244/0x2a4 [ 97.536390][ T46] ksys_write+0x68/0xf4 [ 97.536775][ T46] __arm64_sys_write+0x20/0x2c [ 97.537183][ T46] invoke_syscall+0x48/0x110 [ 97.537587][ T46] el0_svc_common.constprop.0+0x44/0xd0 [ 97.538040][ T46] do_el0_svc+0x74/0x90 [ 97.538427][ T46] el0_svc+0x2c/0x54 [ 97.538818][ T46] el0_sync_handler+0x1a4/0x1b0 [ 97.539232][ T46] el0_sync+0x1a8/0x1c0 [ 97.539676][ T46] [ 97.539985][ T46] Freed by task 46: [ 97.540497][ T46] kasan_save_stack+0x28/0x5c [ 97.541142][ T46] kasan_set_track+0x28/0x40 [ 97.541551][ T46] kasan_set_free_info+0x20/0x30 [ 97.541981][ T46] ____kasan_slab_free.constprop.0+0x1dc/0x254 [ 97.542454][ T46] __kasan_slab_free+0x10/0x1c [ 97.542885][ T46] slab_free_freelist_hook+0xc0/0x220 [ 97.543367][ T46] kfree+0x350/0x4c4 [ 97.543869][ T46] xt_unregister_table+0x8c/0xcc [ 97.544313][ T46] __arpt_unregister_table+0x2c/0xcc [ 97.544747][ T46] arpt_unregister_table+0x30/0x40 [ 97.545176][ T46] arptable_filter_net_exit+0x18/0x24 [ 97.545609][ T46] ops_exit_list+0x44/0x80 [ 97.546010][ T46] cleanup_net+0x23c/0x410 [ 97.546407][ T46] process_one_work+0x1d8/0x364 [ 97.546833][ T46] worker_thread+0x70/0x434 [ 97.547233][ T46] kthread+0x174/0x180 [ 97.547609][ T46] ret_from_fork+0x10/0x34 [ 97.548039][ T46] [ 97.548333][ T46] The buggy address belongs to the object at ffff000009724700 [ 97.548333][ T46] which belongs to the cache kmalloc-128 of size 128 [ 97.549197][ T46] The buggy address is located 72 bytes inside of [ 97.549197][ T46] 128-byte region [ffff000009724700, ffff000009724780) [ 97.550035][ T46] The buggy address belongs to the page: [ 97.550896][ T46] page:000000002526946d refcount:1 mapcount:0 mapping:0000000000000000 index:0xf4ff000009724600 pfn:0x49724 [ 97.551819][ T46] flags: 0x1ffc00000000200(slab|node=0|zone=0|lastcpupid=0x7ff|kasantag=0x0) [ 97.552905][ T46] raw: 01ffc00000000200 fffffc0000189400 0000000500000005 faff000003001200 [ 97.553533][ T46] raw: f4ff000009724600 000000008010000e 00000001ffffffff 0000000000000000 [ 97.554140][ T46] page dumped because: kasan: bad access detected [ 97.554637][ T46] [ 97.554917][ T46] Memory state around the buggy address: [ 97.555464][ T46] ffff000009724500: f4 f4 f4 f4 f4 f4 f4 f4 fe fe fe fe fe fe fe fe [ 97.556066][ T46] ffff000009724600: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 97.556630][ T46] >ffff000009724700: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe [ 97.557173][ T46] ^ [ 97.557625][ T46] ffff000009724800: f6 f6 f6 f6 fe fe fe fe fe fe fe fe fe fe fe fe [ 97.558165][ T46] ffff000009724900: f5 f5 f5 f5 f5 f5 f5 f5 fe fe fe fe fe fe fe fe [ 97.558722][ T46] ================================================================== [ 97.559250][ T46] Disabling lock debugging due to kernel taint executing program executing program executing program [ 105.353937][ T3294] can: request_module (can-proto-0) failed. [ 105.446770][ T3294] can: request_module (can-proto-0) failed. [ 105.525268][ T3294] can: request_module (can-proto-0) failed. executing program executing program [ 114.896937][ T3139] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 114.904241][ T3139] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 114.909406][ T3139] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 114.916168][ T3139] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. VM DIAGNOSIS: 13:22:43 Registers: info registers vcpu 0 PC=ffff800011709fdc X00=00000000000000e0 X01=000000000000a02c X02=ffff00007fbc42a0 X03=000000000000a02a X04=0000000000000000 X05=000000000000000a X06=0000040108005c00 X07=000000000000000c X08=ffff80001272a2b8 X09=010a27154b1b8d1b X10=b973f7d222505712 X11=ffff800011d4a128 X12=0000000000000000 X13=0000000000000001 X14=000000000000029e X15=0000000000000000 X16=0000000000000000 X17=0000000000000000 X18=0000000000000000 X19=0000000000000000 X20=ffff80001270fe08 X21=ffff80001270fe88 X22=ffff8000126eed68 X23=ffff80001270febc X24=0000000000000000 X25=0000000000000000 X26=ffff800012729400 X27=0000000000000000 X28=0000000042810018 X29=ffff800012703ec0 X30=b5e3800011709ff4 SP=ffff800012703ec0 PSTATE=604000c9 -ZC- EL2h BTYPE=0 FPCR=00000000 FPSR=00000010 P00=0000 P01=0000 P02=0000 P03=0000 P04=0000 P05=0000 P06=0000 P07=0000 P08=0000 P09=0000 P10=0000 P11=0000 P12=0000 P13=0000 P14=0000 P15=0000 FFR=0000 Z00=0000000000000000:0000000000000004 Z01=0000000000000000:c1162e42fefa39ef Z02=c1d5da98d96506ae:cb855a9eedfb63d9 Z03=0000000040000000:0000000000000000 Z04=4010040140100401:4000000000000000 Z05=4010040140100401:4010040140100401 Z06=5555400000400000:5555400000400000 Z07=0000000000000000:0000000000000000 Z08=0000000000000000:0000000000000000 Z09=0000000000000000:0000000000000000 Z10=0000000000000000:0000000000000000 Z11=0000000000000000:0000000000000000 Z12=0000000000000000:0000000000000000 Z13=0000000000000000:0000000000000000 Z14=0000000000000000:0000000000000000 Z15=0000000000000000:0000000000000000 Z16=0000000000000000:0000000000000000 Z17=0000000000000000:0000000000000000 Z18=0000000000000000:0000000000000000 Z19=0000000000000000:0000000000000000 Z20=0000000000000000:0000000000000000 Z21=0000000000000000:0000000000000000 Z22=0000000000000000:0000000000000000 Z23=0000000000000000:0000000000000000 Z24=0000000000000000:0000000000000000 Z25=0000000000000000:0000000000000000 Z26=0000000000000000:0000000000000000 Z27=0000000000000000:0000000000000000 Z28=0000000000000000:0000000000000000 Z29=0000000000000000:0000000000000000 Z30=0000000000000010:00000011eb048410 Z31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff8000116e62f0 X00=0000000000000000 X01=0000000060400009 X02=000000000000006e X03=0000000040000000 X04=0000000020000000 X05=000000000000004e X06=0000000000000000 X07=ffff8000127ec620 X08=ffff80001273c620 X09=0000000000000000 X10=0000000000000000 X11=0000000000000000 X12=0000000000000000 X13=0000000000000300 X14=ffffffffffffffff X15=0000000000000020 X16=0000000000000000 X17=0000000000000000 X18=00000000fffffffd X19=ffff800012cdbb30 X20=000000000000001d X21=ffff800012cdbc80 X22=ffff8000113be0cc X23=0000000000000001 X24=ffff8000113be0cc X25=ffff8000128f3e40 X26=ffff8000128f3cc0 X27=ffff800012739810 X28=f4ff0000032f2dc0 X29=ffff800012cdb960 X30=ffff8000116e61f0 SP=ffff800012cdb930 PSTATE=804003c9 N--- EL2h BTYPE=0 FPCR=00000000 FPSR=00000010 P00=0000 P01=0000 P02=0000 P03=0000 P04=0000 P05=0000 P06=0000 P07=0000 P08=0000 P09=0000 P10=0000 P11=0000 P12=0000 P13=0000 P14=0000 P15=0000 FFR=0000 Z00=0000000000000000:0000000000000000 Z01=006b63616d732c6f:796f6d6f742c6469 Z02=0000000000000000:0000000000000000 Z03=0000000000100000:0000000000000000 Z04=0000000000000000:0000000000000000 Z05=4010040140100401:4010040140100401 Z06=0000000000100000:0000000000100000 Z07=0000000000000000:3fee3d7c74208662 Z08=0000000000000000:3fc7f5cf61c6b554 Z09=0000000000000000:3fe2eb71fddc2755 Z10=0000000000000000:3fe0000000000000 Z11=0000000000000000:dbb159fa0e819abc Z12=0000000000000000:f264373a79aa8402 Z13=0000000000000000:9a2e35f48b72098a Z14=0000000000000000:ecd87e16fe7ff407 Z15=0000000000000000:ab6142ecfad1e518 Z16=0000000000000000:0000000000000000 Z17=0000000000000000:0000000000000000 Z18=0000000000000000:0000000000000000 Z19=0000000000000000:0000000000000000 Z20=0000000000000000:0000000000000000 Z21=0000000000000000:0000000000000000 Z22=0000000000000000:0000000000000000 Z23=0000000000000000:0000000000000000 Z24=0000000000000000:0000000000000000 Z25=0000000000000000:0000000000000000 Z26=0000000000000000:0000000000000000 Z27=0000000000000000:0000000000000000 Z28=0000000000000000:0000000000000000 Z29=0000000000000000:0000000000000000 Z30=0000000000000008:0000000084d28af4 Z31=0000000000000000:0000000000000000