==================================================================
BUG: KASAN: invalid-access in __packet_get_status+0x70/0xe0 net/packet/af_packet.c:438
Read at addr f2ff000008f80000 by task kworker/u4:19/2930
Pointer tag: [f2], memory tag: [f0]

CPU: 1 PID: 2930 Comm: kworker/u4:19 Not tainted 6.4.0-rc5-syzkaller-00002-gf8dba31b0a82 #0
Hardware name: linux,dummy-virt (DT)
Workqueue: wg-kex-wg0 wg_packet_handshake_send_worker
Call trace:
 dump_backtrace+0x94/0xec arch/arm64/kernel/stacktrace.c:233
 show_stack+0x18/0x24 arch/arm64/kernel/stacktrace.c:240
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x48/0x60 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:351 [inline]
 print_report+0xd8/0x5f4 mm/kasan/report.c:462
 kasan_report+0x7c/0x9c mm/kasan/report.c:572
 __do_kernel_fault+0x174/0x1c0 arch/arm64/mm/fault.c:320
 do_bad_area arch/arm64/mm/fault.c:479 [inline]
 do_tag_check_fault+0x78/0x8c arch/arm64/mm/fault.c:791
 do_mem_abort+0x44/0x94 arch/arm64/mm/fault.c:867
 el1_abort+0x40/0x60 arch/arm64/kernel/entry-common.c:367
 el1h_64_sync_handler+0xd8/0xe4 arch/arm64/kernel/entry-common.c:427
 el1h_64_sync+0x64/0x68 arch/arm64/kernel/entry.S:586
 __packet_get_status+0x70/0xe0 net/packet/af_packet.c:438
 packet_lookup_frame net/packet/af_packet.c:524 [inline]
 __tpacket_has_room net/packet/af_packet.c:1255 [inline]
 __packet_rcv_has_room net/packet/af_packet.c:1296 [inline]
 __packet_rcv_has_room+0xf8/0x188 net/packet/af_packet.c:1271
 tpacket_rcv+0x144/0xbbc net/packet/af_packet.c:2285
 dev_queue_xmit_nit+0x284/0x2c8 net/core/dev.c:2281
 xmit_one net/core/dev.c:3574 [inline]
 dev_hard_start_xmit+0x78/0x148 net/core/dev.c:3594
 __dev_queue_xmit+0xaa0/0xd40 net/core/dev.c:4244
 dev_queue_xmit include/linux/netdevice.h:3085 [inline]
 neigh_hh_output include/net/neighbour.h:528 [inline]
 neigh_output include/net/neighbour.h:542 [inline]
 ip6_finish_output2+0x268/0x7b8 net/ipv6/ip6_output.c:134
 __ip6_finish_output net/ipv6/ip6_output.c:195 [inline]
 ip6_finish_output+0x220/0x360 net/ipv6/ip6_output.c:206
 NF_HOOK_COND include/linux/netfilter.h:292 [inline]
 ip6_output+0x74/0x1d4 net/ipv6/ip6_output.c:227
 dst_output include/net/dst.h:458 [inline]
 ip6_local_out+0x48/0x5c net/ipv6/output_core.c:155
 ip6tunnel_xmit include/net/ip6_tunnel.h:161 [inline]
 udp_tunnel6_xmit_skb+0x170/0x2ac net/ipv6/ip6_udp_tunnel.c:109
 send6+0x130/0x29c drivers/net/wireguard/socket.c:152
 wg_socket_send_skb_to_peer+0x60/0xcc drivers/net/wireguard/socket.c:178
 wg_socket_send_buffer_to_peer+0x88/0xbc drivers/net/wireguard/socket.c:200
 wg_packet_send_handshake_initiation+0xd0/0xe0 drivers/net/wireguard/send.c:40
 wg_packet_handshake_send_worker+0x1c/0x34 drivers/net/wireguard/send.c:51
 process_one_work+0x1c0/0x30c kernel/workqueue.c:2405
 worker_thread+0x70/0x418 kernel/workqueue.c:2552
 kthread+0x118/0x11c kernel/kthread.c:379
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870

The buggy address belongs to the physical page:
page:0000000090fef9b6 refcount:9 mapcount:1 mapping:0000000000000000 index:0x0 pfn:0x48f80
head:0000000090fef9b6 order:3 entire_mapcount:0 nr_pages_mapped:8 pincount:0
flags: 0x1ffc34006010000(head|arch_2|arch_3|node=0|zone=0|lastcpupid=0x7ff|kasantag=0xd)
page_type: 0x0()
raw: 01ffc34006010000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 0000000900000000 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff000008f7fe00: f3 f3 f3 f3 f3 f3 f3 f3 f3 f3 f3 f3 f3 f3 f3 f3
 ffff000008f7ff00: f3 f3 f3 f3 f3 f3 f3 f3 f3 f3 f3 f3 f3 f3 f3 f3
>ffff000008f80000: f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0
                   ^
 ffff000008f80100: f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0
 ffff000008f80200: f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0
==================================================================