------------[ cut here ]------------ hook not found, pf 3 num 0 WARNING: CPU: 1 PID: 118 at net/netfilter/core.c:480 __nf_unregister_net_hook+0xac/0x1d0 net/netfilter/core.c:480 Modules linked in: CPU: 1 PID: 118 Comm: kworker/u4:3 Not tainted 5.12.0-syzkaller-13661-gd835ff6c96ae #0 Hardware name: linux,dummy-virt (DT) Workqueue: netns cleanup_net pstate: 60400009 (nZCv daif +PAN -UAO -TCO BTYPE=--) pc : __nf_unregister_net_hook+0xac/0x1d0 net/netfilter/core.c:480 lr : __nf_unregister_net_hook+0xac/0x1d0 net/netfilter/core.c:480 sp : ffff800012d8bc80 x29: ffff800012d8bc80 x28: f2ff000003018000 x27: ffff800012739810 x26: ffff8000128f3cc0 x25: ffff8000128f3e40 x24: fdff000009841c00 x23: faff000005f809f0 x22: faff000005f80000 x21: ffff8000128fbe10 x20: 0000000000000003 x19: fdff0000056d5300 x18: 00000000fffffffe x17: 0000000000000000 x16: 0000000000000001 x15: 0000000000000020 x14: ffffffffffffffff x13: 00000000000002fa x12: ffff800012d8b950 x11: ffff8000127f0d90 x10: ffff80001274cc10 x9 : ffff8000127ec620 x8 : ffff80001273c620 x7 : ffff8000127ec620 x6 : fffffffffffcbde0 x5 : ffff00007fbd0948 x4 : 0000000000015ff5 x3 : 0000000000000001 x2 : 0000000000000000 x1 : 0000000000000000 x0 : f3ff0000032fbd00 Call trace: __nf_unregister_net_hook+0xac/0x1d0 net/netfilter/core.c:480 nf_unregister_net_hook net/netfilter/core.c:502 [inline] nf_unregister_net_hooks+0x88/0xac net/netfilter/core.c:576 arpt_unregister_table_pre_exit+0x40/0x50 net/ipv4/netfilter/arp_tables.c:1565 arptable_filter_net_pre_exit+0x20/0x2c net/ipv4/netfilter/arptable_filter.c:57 ops_pre_exit_list net/core/net_namespace.c:165 [inline] cleanup_net+0x200/0x410 net/core/net_namespace.c:583 process_one_work+0x1d8/0x364 kernel/workqueue.c:2275 worker_thread+0x70/0x434 kernel/workqueue.c:2421 kthread+0x174/0x180 kernel/kthread.c:313 ret_from_fork+0x10/0x34 arch/arm64/kernel/entry.S:1006 ---[ end trace 093053272213063c ]--- netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 device hsr_slave_0 left promiscuous mode device hsr_slave_1 left promiscuous mode device veth1_macvtap left promiscuous mode device veth0_macvtap left promiscuous mode device veth1_vlan left promiscuous mode device veth0_vlan left promiscuous mode bond0 (unregistering): (slave bond_slave_1): Releasing backup interface bond0 (unregistering): (slave bond_slave_0): Releasing backup interface bond0 (unregistering): Released all slaves ================================================================== BUG: KASAN: invalid-access in hooks_validate+0x38/0x7c net/netfilter/core.c:174 Read at addr fcff000005a2b048 by task kworker/u4:3/118 Pointer tag: [fc], memory tag: [fe] CPU: 1 PID: 118 Comm: kworker/u4:3 Tainted: G W 5.12.0-syzkaller-13661-gd835ff6c96ae #0 Hardware name: linux,dummy-virt (DT) Workqueue: netns cleanup_net Call trace: dump_backtrace+0x0/0x1b0 arch/arm64/kernel/stacktrace.c:136 show_stack+0x18/0x24 arch/arm64/kernel/stacktrace.c:215 __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0xd0/0x12c lib/dump_stack.c:120 print_address_description+0x70/0x2ac mm/kasan/report.c:233 __kasan_report mm/kasan/report.c:419 [inline] kasan_report+0x134/0x380 mm/kasan/report.c:436 report_tag_fault arch/arm64/mm/fault.c:324 [inline] do_tag_recovery arch/arm64/mm/fault.c:336 [inline] __do_kernel_fault+0x1a8/0x1dc arch/arm64/mm/fault.c:378 do_bad_area arch/arm64/mm/fault.c:474 [inline] do_tag_check_fault+0x74/0x90 arch/arm64/mm/fault.c:745 do_mem_abort+0x44/0xbc arch/arm64/mm/fault.c:821 el1_abort+0x40/0x60 arch/arm64/kernel/entry-common.c:171 el1_sync_handler+0xac/0xd0 arch/arm64/kernel/entry-common.c:263 el1_sync+0x70/0x100 arch/arm64/kernel/entry.S:719 hooks_validate+0x38/0x7c net/netfilter/core.c:174 __nf_unregister_net_hook+0x114/0x1d0 net/netfilter/core.c:483 nf_unregister_net_hook+0x64/0x74 net/netfilter/core.c:502 clusterip_net_exit+0x60/0x7c net/ipv4/netfilter/ipt_CLUSTERIP.c:853 ops_exit_list+0x44/0x80 net/core/net_namespace.c:175 cleanup_net+0x23c/0x410 net/core/net_namespace.c:595 process_one_work+0x1d8/0x364 kernel/workqueue.c:2275 worker_thread+0x70/0x434 kernel/workqueue.c:2421 kthread+0x174/0x180 kernel/kthread.c:313 ret_from_fork+0x10/0x34 arch/arm64/kernel/entry.S:1006 Allocated by task 3436: kasan_save_stack+0x28/0x5c mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:428 [inline] ____kasan_kmalloc mm/kasan/common.c:507 [inline] ____kasan_kmalloc mm/kasan/common.c:466 [inline] __kasan_kmalloc+0xc8/0x100 mm/kasan/common.c:516 kasan_kmalloc include/linux/kasan.h:246 [inline] kmem_cache_alloc_trace include/linux/slab.h:454 [inline] kmalloc include/linux/slab.h:556 [inline] dst_cow_metrics_generic+0x4c/0x160 net/core/dst.c:201 dst_metrics_write_ptr include/net/dst.h:118 [inline] dst_metric_set include/net/dst.h:179 [inline] icmp6_dst_alloc+0x134/0x200 net/ipv6/route.c:3164 mld_sendpack+0x204/0x404 net/ipv6/mcast.c:1812 mld_send_initial_cr.part.0.isra.0+0x5c/0x70 net/ipv6/mcast.c:2242 mld_send_initial_cr net/ipv6/mcast.c:1227 [inline] ipv6_mc_dad_complete+0x78/0x190 net/ipv6/mcast.c:2250 addrconf_dad_completed+0x2ac/0x2e4 net/ipv6/addrconf.c:4175 addrconf_dad_work+0x254/0x4ec net/ipv6/addrconf.c:4105 process_one_work+0x1d8/0x364 kernel/workqueue.c:2275 worker_thread+0x70/0x434 kernel/workqueue.c:2421 kthread+0x174/0x180 kernel/kthread.c:313 ret_from_fork+0x10/0x34 arch/arm64/kernel/entry.S:1006 Freed by task 118: kasan_save_stack+0x28/0x5c mm/kasan/common.c:38 kasan_set_track+0x28/0x40 mm/kasan/common.c:46 kasan_set_free_info+0x20/0x30 mm/kasan/hw_tags.c:226 ____kasan_slab_free.constprop.0+0x1dc/0x254 mm/kasan/common.c:360 __kasan_slab_free+0x10/0x1c mm/kasan/common.c:368 kasan_slab_free include/linux/kasan.h:212 [inline] slab_free_hook mm/slub.c:1581 [inline] slab_free_freelist_hook+0xc0/0x220 mm/slub.c:1606 slab_free mm/slub.c:3166 [inline] kfree+0x350/0x4c4 mm/slub.c:4225 xt_unregister_table+0x8c/0xcc net/netfilter/x_tables.c:1501 __arpt_unregister_table+0x2c/0xcc net/ipv4/netfilter/arp_tables.c:1488 arpt_unregister_table+0x30/0x40 net/ipv4/netfilter/arp_tables.c:1574 arptable_filter_net_exit+0x18/0x24 net/ipv4/netfilter/arptable_filter.c:62 ops_exit_list+0x44/0x80 net/core/net_namespace.c:175 cleanup_net+0x23c/0x410 net/core/net_namespace.c:595 process_one_work+0x1d8/0x364 kernel/workqueue.c:2275 worker_thread+0x70/0x434 kernel/workqueue.c:2421 kthread+0x174/0x180 kernel/kthread.c:313 ret_from_fork+0x10/0x34 arch/arm64/kernel/entry.S:1006 The buggy address belongs to the object at ffff000005a2b000 which belongs to the cache kmalloc-128 of size 128 The buggy address is located 72 bytes inside of 128-byte region [ffff000005a2b000, ffff000005a2b080) The buggy address belongs to the page: page:00000000fad7cdc1 refcount:1 mapcount:0 mapping:0000000000000000 index:0xfcff000005a2b000 pfn:0x45a2b flags: 0x1ffc00000000200(slab|node=0|zone=0|lastcpupid=0x7ff|kasantag=0x0) raw: 01ffc00000000200 fffffc00002630c8 fffffc0000179c88 fdff000003001200 raw: fcff000005a2b000 000000000010000d 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff000005a2ae00: f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 fe f0 f0 ffff000005a2af00: f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 fe fe fe fe fe >ffff000005a2b000: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe ^ ffff000005a2b100: f2 f2 f2 f2 f2 f2 f2 f2 fe fe fe fe fe fe fe fe ffff000005a2b200: f0 f0 f0 f0 fe fe fe fe fe fe fe fe fe fe fe fe ==================================================================