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BUG: KASAN: use-after-free in eth_header_parse_protocol+0xad/0xd0 net/ethernet/eth.c:282
Read of size 2 at addr ffff88819baca80b by task syz-executor.3/8546

CPU: 0 PID: 8546 Comm: syz-executor.3 Not tainted 5.4.111-syzkaller-00141-gce6a5172613f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1d8/0x24e lib/dump_stack.c:118
 print_address_description+0x9b/0x650 mm/kasan/report.c:384
 __kasan_report+0x182/0x260 mm/kasan/report.c:516
 kasan_report+0x30/0x60 mm/kasan/common.c:641
 eth_header_parse_protocol+0xad/0xd0 net/ethernet/eth.c:282
 dev_parse_header_protocol include/linux/netdevice.h:3016 [inline]
 virtio_net_hdr_to_skb+0x6de/0xd70 include/linux/virtio_net.h:83
 packet_snd net/packet/af_packet.c:2976 [inline]
 packet_sendmsg+0x483a/0x6780 net/packet/af_packet.c:3013
 sock_sendmsg_nosec net/socket.c:638 [inline]
 sock_sendmsg net/socket.c:658 [inline]
 sock_write_iter+0x330/0x450 net/socket.c:990
 call_write_iter include/linux/fs.h:1971 [inline]
 new_sync_write fs/read_write.c:483 [inline]
 __vfs_write+0x5ec/0x780 fs/read_write.c:496
 vfs_write+0x212/0x4e0 fs/read_write.c:558
 ksys_write+0x186/0x2b0 fs/read_write.c:611
 do_syscall_64+0xcb/0x1e0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x466459
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f43cddbb188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459
RDX: 0000000000000122 RSI: 0000000020000740 RDI: 0000000000000003
RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007fffef55b75f R14: 00007f43cddbb300 R15: 0000000000022000

The buggy address belongs to the page:
page:ffffea00066eb280 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0
flags: 0x8000000000000000()
raw: 8000000000000000 dead000000000100 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88819baca700: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88819baca780: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88819baca800: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                      ^
 ffff88819baca880: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88819baca900: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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