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BUG: KASAN: invalid-access in __packet_get_status+0xb0/0x12c net/packet/af_packet.c:439
Read at addr f6ff000026d28000 by task kworker/u4:6/1456
Pointer tag: [f6], memory tag: [f0]

CPU: 1 PID: 1456 Comm: kworker/u4:6 Not tainted 6.8.0-rc4-syzkaller-00180-g4f5e5092fdbf #0
Hardware name: linux,dummy-virt (DT)
Workqueue: wg-kex-wg1 wg_packet_handshake_send_worker
Call trace:
 dump_backtrace+0x94/0xec arch/arm64/kernel/stacktrace.c:291
 show_stack+0x18/0x24 arch/arm64/kernel/stacktrace.c:298
 __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:377 [inline]
 print_report+0x108/0x618 mm/kasan/report.c:488
 kasan_report+0x88/0xac mm/kasan/report.c:601
 report_tag_fault arch/arm64/mm/fault.c:334 [inline]
 do_tag_recovery arch/arm64/mm/fault.c:346 [inline]
 __do_kernel_fault+0x17c/0x1e8 arch/arm64/mm/fault.c:393
 do_bad_area arch/arm64/mm/fault.c:493 [inline]
 do_tag_check_fault+0x78/0x8c arch/arm64/mm/fault.c:772
 do_mem_abort+0x44/0x94 arch/arm64/mm/fault.c:848
 el1_abort+0x40/0x60 arch/arm64/kernel/entry-common.c:398
 el1h_64_sync_handler+0xd8/0xe4 arch/arm64/kernel/entry-common.c:458
 el1h_64_sync+0x64/0x68 arch/arm64/kernel/entry.S:593
 __packet_get_status+0xb0/0x12c net/packet/af_packet.c:439
 packet_lookup_frame net/packet/af_packet.c:528 [inline]
 packet_current_rx_frame net/packet/af_packet.c:1121 [inline]
 tpacket_rcv+0x2b0/0xbcc net/packet/af_packet.c:2356
 dev_queue_xmit_nit+0x27c/0x2c0 net/core/dev.c:2312
 xmit_one net/core/dev.c:3543 [inline]
 dev_hard_start_xmit+0x74/0x110 net/core/dev.c:3563
 __dev_queue_xmit+0x1c0/0xe5c net/core/dev.c:4351
 dev_queue_xmit include/linux/netdevice.h:3171 [inline]
 neigh_hh_output include/net/neighbour.h:526 [inline]
 neigh_output include/net/neighbour.h:540 [inline]
 ip_finish_output2+0x310/0x64c net/ipv4/ip_output.c:235
 __ip_finish_output net/ipv4/ip_output.c:313 [inline]
 __ip_finish_output+0xa4/0x19c net/ipv4/ip_output.c:295
 ip_finish_output+0x34/0x108 net/ipv4/ip_output.c:323
 NF_HOOK_COND include/linux/netfilter.h:303 [inline]
 ip_output+0x68/0x100 net/ipv4/ip_output.c:433
 dst_output include/net/dst.h:451 [inline]
 ip_local_out+0x48/0x5c net/ipv4/ip_output.c:129
 iptunnel_xmit+0x138/0x330 net/ipv4/ip_tunnel_core.c:82
 udp_tunnel_xmit_skb+0xe8/0x11c net/ipv4/udp_tunnel_core.c:172
 send4+0x120/0x2ac drivers/net/wireguard/socket.c:85
 wg_socket_send_skb_to_peer+0xb0/0xcc drivers/net/wireguard/socket.c:175
 wg_socket_send_buffer_to_peer+0x88/0xbc drivers/net/wireguard/socket.c:200
 wg_packet_send_handshake_initiation+0xe0/0xf0 drivers/net/wireguard/send.c:40
 wg_packet_handshake_send_worker+0x1c/0x34 drivers/net/wireguard/send.c:51
 process_one_work+0x148/0x258 kernel/workqueue.c:2633
 process_scheduled_works kernel/workqueue.c:2706 [inline]
 worker_thread+0x2b4/0x3cc kernel/workqueue.c:2787
 kthread+0x114/0x118 kernel/kthread.c:388
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860

The buggy address belongs to the physical page:
page:00000000e6f749ff refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x66d28
head:00000000e6f749ff order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x1ffc24006000040(head|arch_2|arch_3|node=0|zone=0|lastcpupid=0x7ff|kasantag=0x9)
page_type: 0xffffffff()
raw: 01ffc24006000040 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff000026d27e00: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
 ffff000026d27f00: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
>ffff000026d28000: f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0
                   ^
 ffff000026d28100: f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0
 ffff000026d28200: f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0
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