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BUG: KASAN: use-after-free in nf_hook_entries_grow+0x63a/0x900 net/netfilter/core.c:142
Read of size 4 at addr ffff88801da79e38 by task syz-executor463/5956

CPU: 1 PID: 5956 Comm: syz-executor463 Not tainted 5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x9a/0xcc lib/dump_stack.c:120
 print_address_description.constprop.0.cold+0x5b/0x2f8 mm/kasan/report.c:230
 __kasan_report mm/kasan/report.c:396 [inline]
 kasan_report.cold+0x79/0xd5 mm/kasan/report.c:413
 nf_hook_entries_grow+0x63a/0x900 net/netfilter/core.c:142
 __nf_register_net_hook+0xe1/0x4c0 net/netfilter/core.c:407
 nf_register_net_hook+0xb1/0xf0 net/netfilter/core.c:541
 nft_register_flowtable_net_hooks+0x3bc/0x7a0 net/netfilter/nf_tables_api.c:6795
 nf_tables_newflowtable+0x1377/0x1f80 net/netfilter/nf_tables_api.c:6979
 nfnetlink_rcv_batch+0x68c/0x2050 net/netfilter/nfnetlink.c:456
 nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:580 [inline]
 nfnetlink_rcv+0x2bc/0x340 net/netfilter/nfnetlink.c:598
 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]
 netlink_unicast+0x42e/0x700 net/netlink/af_netlink.c:1338
 netlink_sendmsg+0x70e/0xbe0 net/netlink/af_netlink.c:1927
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xab/0xe0 net/socket.c:672
 ____sys_sendmsg+0x5bf/0x7a0 net/socket.c:2345
 ___sys_sendmsg+0xd3/0x150 net/socket.c:2399
 __sys_sendmsg+0xb2/0x140 net/socket.c:2432
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f6244c997e9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe4afb03d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f6244c997e9
RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003
RBP: 0000000000000000 R08: 000000000000000d R09: 000000000000000d
R10: 000000000000000d R11: 0000000000000246 R12: 00007ffe4afb03f0
R13: 00000000000f4240 R14: 0000000000014ea8 R15: 00007ffe4afb03e4

Allocated by task 5955:
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:401 [inline]
 ____kasan_kmalloc.constprop.0+0x82/0xa0 mm/kasan/common.c:429
 kmalloc include/linux/slab.h:552 [inline]
 nft_netdev_hook_alloc+0x8a/0x190 net/netfilter/nf_tables_api.c:1735
 nf_tables_parse_netdev_hooks+0x107/0x730 net/netfilter/nf_tables_api.c:1789
 nft_flowtable_parse_hook+0x235/0x990 net/netfilter/nf_tables_api.c:6702
 nf_tables_newflowtable+0x123d/0x1f80 net/netfilter/nf_tables_api.c:6970
 nfnetlink_rcv_batch+0x68c/0x2050 net/netfilter/nfnetlink.c:456
 nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:580 [inline]
 nfnetlink_rcv+0x2bc/0x340 net/netfilter/nfnetlink.c:598
 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]
 netlink_unicast+0x42e/0x700 net/netlink/af_netlink.c:1338
 netlink_sendmsg+0x70e/0xbe0 net/netlink/af_netlink.c:1927
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xab/0xe0 net/socket.c:672
 ____sys_sendmsg+0x5bf/0x7a0 net/socket.c:2345
 ___sys_sendmsg+0xd3/0x150 net/socket.c:2399
 __sys_sendmsg+0xb2/0x140 net/socket.c:2432
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Freed by task 5955:
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
 kasan_set_track+0x1c/0x30 mm/kasan/common.c:46
 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:356
 ____kasan_slab_free+0xe1/0x110 mm/kasan/common.c:362
 kasan_slab_free include/linux/kasan.h:192 [inline]
 slab_free_hook mm/slub.c:1547 [inline]
 slab_free_freelist_hook+0x5d/0x150 mm/slub.c:1580
 slab_free mm/slub.c:3143 [inline]
 kfree+0xdb/0x3b0 mm/slub.c:4139
 nf_tables_flowtable_destroy+0x1c8/0x380 net/netfilter/nf_tables_api.c:7380
 __nft_release_table+0x579/0xe60 net/netfilter/nf_tables_api.c:9054
 nft_rcv_nl_event+0x3ac/0x510 net/netfilter/nf_tables_api.c:9113
 notifier_call_chain+0x94/0x170 kernel/notifier.c:83
 blocking_notifier_call_chain kernel/notifier.c:337 [inline]
 blocking_notifier_call_chain+0x5d/0x80 kernel/notifier.c:325
 netlink_release+0xa1f/0x17d0 net/netlink/af_netlink.c:783
 __sock_release+0xbb/0x270 net/socket.c:597
 sock_close+0xf/0x20 net/socket.c:1256
 __fput+0x204/0x870 fs/file_table.c:280
 task_work_run+0xc0/0x160 kernel/task_work.c:140
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:174 [inline]
 exit_to_user_mode_prepare+0x249/0x250 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

The buggy address belongs to the object at ffff88801da79e00
 which belongs to the cache kmalloc-96 of size 96
The buggy address is located 56 bytes inside of
 96-byte region [ffff88801da79e00, ffff88801da79e60)
The buggy address belongs to the page:
page:000000000f99545d refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1da79
flags: 0xfff00000000200(slab)
raw: 00fff00000000200 dead000000000100 dead000000000122 ffff88800f441780
raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL), pid 4769, ts 85692928283
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x144/0x1c0 mm/page_alloc.c:2297
 prep_new_page mm/page_alloc.c:2306 [inline]
 get_page_from_freelist+0x1c6e/0x3f80 mm/page_alloc.c:3945
 __alloc_pages_nodemask+0x2d6/0x730 mm/page_alloc.c:4995
 alloc_pages include/linux/gfp.h:547 [inline]
 alloc_slab_page mm/slub.c:1618 [inline]
 allocate_slab+0x2b6/0x4a0 mm/slub.c:1758
 new_slab mm/slub.c:1821 [inline]
 new_slab_objects mm/slub.c:2578 [inline]
 ___slab_alloc+0x476/0x790 mm/slub.c:2741
 __slab_alloc.constprop.0+0x95/0xe0 mm/slub.c:2781
 slab_alloc_node mm/slub.c:2857 [inline]
 slab_alloc mm/slub.c:2900 [inline]
 kmem_cache_alloc_trace+0x2cc/0x360 mm/slub.c:2917
 kmalloc include/linux/slab.h:552 [inline]
 __hw_addr_create_ex+0x56/0x2e0 net/core/dev_addr_lists.c:30
 __dev_mc_add net/core/dev_addr_lists.c:775 [inline]
 dev_mc_add+0xb1/0xf0 net/core/dev_addr_lists.c:792
 igmp6_group_added+0x3c9/0x4c0 net/ipv6/mcast.c:669
 __ipv6_dev_mc_inc+0x67d/0xa60 net/ipv6/mcast.c:928
 addrconf_join_solict net/ipv6/addrconf.c:2170 [inline]
 addrconf_join_solict net/ipv6/addrconf.c:2162 [inline]
 addrconf_dad_begin net/ipv6/addrconf.c:3937 [inline]
 addrconf_dad_work+0xaa4/0x10f0 net/ipv6/addrconf.c:4064
 process_one_work+0x828/0x1390 kernel/workqueue.c:2275
 worker_thread+0x598/0xf80 kernel/workqueue.c:2421
 kthread+0x36f/0x450 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1271 [inline]
 free_pcp_prepare+0x2cb/0x410 mm/page_alloc.c:1306
 free_unref_page_prepare mm/page_alloc.c:3200 [inline]
 free_unref_page+0x12/0x1b0 mm/page_alloc.c:3248
 unfreeze_partials+0x16c/0x1b0 mm/slub.c:2359
 put_cpu_partial+0x129/0x200 mm/slub.c:2395
 qlink_free mm/kasan/quarantine.c:146 [inline]
 qlist_free_all+0x5a/0xc0 mm/kasan/quarantine.c:165
 quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:272
 ____kasan_kmalloc.constprop.0+0x98/0xa0 mm/kasan/common.c:412
 kasan_slab_alloc include/linux/kasan.h:209 [inline]
 slab_post_alloc_hook mm/slab.h:512 [inline]
 slab_alloc_node mm/slub.c:2892 [inline]
 slab_alloc mm/slub.c:2900 [inline]
 kmem_cache_alloc_trace+0x1be/0x360 mm/slub.c:2917
 kmalloc include/linux/slab.h:552 [inline]
 kzalloc include/linux/slab.h:682 [inline]
 keypair_create drivers/net/wireguard/noise.c:100 [inline]
 wg_noise_handshake_begin_session+0xc8/0xcc0 drivers/net/wireguard/noise.c:794
 wg_packet_send_handshake_response+0x1b9/0x2a0 drivers/net/wireguard/send.c:96
 wg_receive_handshake_packet+0x199/0x9b0 drivers/net/wireguard/receive.c:161
 wg_packet_handshake_receive_worker+0x3b/0x80 drivers/net/wireguard/receive.c:220
 process_one_work+0x828/0x1390 kernel/workqueue.c:2275
 worker_thread+0x598/0xf80 kernel/workqueue.c:2421
 kthread+0x36f/0x450 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296

Memory state around the buggy address:
 ffff88801da79d00: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc
 ffff88801da79d80: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
>ffff88801da79e00: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
                                        ^
 ffff88801da79e80: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc
 ffff88801da79f00: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc
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