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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 ffff8881e13a400b by task syz-executor.5/453

CPU: 1 PID: 453 Comm: syz-executor.5 Not tainted 5.4.111-syzkaller-00138-g3c5dbcf40ba8 #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]
 kernel_sendmsg+0xf5/0x130 net/socket.c:678
 sock_no_sendpage+0x143/0x1b0 net/core/sock.c:2763
 kernel_sendpage net/socket.c:3764 [inline]
 sock_sendpage+0xd0/0x120 net/socket.c:936
 pipe_to_sendpage+0x23b/0x300 fs/splice.c:449
 splice_from_pipe_feed fs/splice.c:500 [inline]
 __splice_from_pipe+0x2d3/0x870 fs/splice.c:624
 splice_from_pipe fs/splice.c:659 [inline]
 generic_splice_sendpage+0x181/0x210 fs/splice.c:829
 do_splice_from fs/splice.c:848 [inline]
 do_splice fs/splice.c:1156 [inline]
 __do_sys_splice fs/splice.c:1433 [inline]
 __se_sys_splice+0x7a8/0x1b00 fs/splice.c:1413
 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:00007ff631092188 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 000000000056c008 RCX: 0000000000466459
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00000000004bf9fb R08: 000000000004ffe0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c008
R13: 00007ffc9c7fd30f R14: 00007ff631092300 R15: 0000000000022000

Allocated by task 16:
 save_stack mm/kasan/common.c:70 [inline]
 set_track mm/kasan/common.c:78 [inline]
 __kasan_kmalloc+0x137/0x1e0 mm/kasan/common.c:517
 slab_post_alloc_hook mm/slab.h:584 [inline]
 slab_alloc_node mm/slub.c:2821 [inline]
 slab_alloc mm/slub.c:2829 [inline]
 __kmalloc_track_caller+0x13a/0x2e0 mm/slub.c:4439
 __kmalloc_reserve net/core/skbuff.c:142 [inline]
 __alloc_skb+0xaf/0x4d0 net/core/skbuff.c:210
 __napi_alloc_skb+0x11f/0x540 net/core/skbuff.c:516
 napi_alloc_skb include/linux/skbuff.h:2850 [inline]
 page_to_skb+0x3e/0x7f0 drivers/net/virtio_net.c:389
 receive_mergeable+0x7f8/0x2940 drivers/net/virtio_net.c:929
 receive_buf+0x144/0x1730 drivers/net/virtio_net.c:1038
 virtnet_receive drivers/net/virtio_net.c:1330 [inline]
 virtnet_poll+0x5b3/0xe40 drivers/net/virtio_net.c:1435
 napi_poll+0x195/0x670 net/core/dev.c:6315
 net_rx_action+0x41c/0xb90 net/core/dev.c:6383
 __do_softirq+0x23e/0x615 kernel/softirq.c:292

Freed by task 341:
 save_stack mm/kasan/common.c:70 [inline]
 set_track mm/kasan/common.c:78 [inline]
 kasan_set_free_info mm/kasan/common.c:333 [inline]
 __kasan_slab_free+0x18a/0x240 mm/kasan/common.c:475
 slab_free_hook mm/slub.c:1454 [inline]
 slab_free_freelist_hook+0x7b/0x150 mm/slub.c:1492
 slab_free mm/slub.c:3072 [inline]
 kfree+0xe0/0x660 mm/slub.c:4061
 skb_release_all net/core/skbuff.c:675 [inline]
 __kfree_skb+0x55/0x170 net/core/skbuff.c:689
 sk_eat_skb include/net/sock.h:2482 [inline]
 tcp_recvmsg+0x16cd/0x3790 net/ipv4/tcp.c:2176
 inet_recvmsg+0x157/0x500 net/ipv4/af_inet.c:842
 sock_recvmsg_nosec net/socket.c:872 [inline]
 sock_recvmsg net/socket.c:890 [inline]
 sock_read_iter+0x34a/0x430 net/socket.c:968
 call_read_iter include/linux/fs.h:1965 [inline]
 new_sync_read fs/read_write.c:414 [inline]
 __vfs_read+0x5e9/0x770 fs/read_write.c:427
 vfs_read+0x161/0x370 fs/read_write.c:461
 ksys_read+0x186/0x2b0 fs/read_write.c:587
 do_syscall_64+0xcb/0x1e0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

The buggy address belongs to the object at ffff8881e13a4000
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 11 bytes inside of
 512-byte region [ffff8881e13a4000, ffff8881e13a4200)
The buggy address belongs to the page:
page:ffffea000784e900 refcount:1 mapcount:0 mapping:ffff8881f5c02500 index:0x0 compound_mapcount: 0
flags: 0x8000000000010200(slab|head)
raw: 8000000000010200 dead000000000100 dead000000000122 ffff8881f5c02500
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881e13a3f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8881e13a3f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8881e13a4000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff8881e13a4080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881e13a4100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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