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BUG: KASAN: slab-out-of-bounds in eth_header_parse_protocol+0xad/0xd0 net/ethernet/eth.c:282
Read of size 2 at addr ffff8881e97c600b by task syz-executor319/343

CPU: 1 PID: 343 Comm: syz-executor319 Not tainted 5.4.108-syzkaller-00848-g4a75e4d41639 #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:2984 [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]
 aio_write+0x47b/0x610 fs/aio.c:1587
 __io_submit_one fs/aio.c:1846 [inline]
 io_submit_one+0xa59/0x2300 fs/aio.c:1889
 __do_sys_io_submit fs/aio.c:1948 [inline]
 __se_sys_io_submit+0x189/0x3d0 fs/aio.c:1918
 do_syscall_64+0xcb/0x1e0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x440579
Code: 28 c3 e8 4a 15 00 00 66 2e 0f 1f 84 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdd057ef78 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 00007ffdd057efa0 RCX: 0000000000440579
RDX: 0000000020000080 RSI: 0000000000000001 RDI: 00007f54b85a8000
RBP: 0000000000000003 R08: bb1414acd057efa7 R09: bb1414acd057efa7
R10: bb1414acd057efa7 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdd057ef90 R14: 00007ffdd057ef88 R15: 00007ffdd057ef84

Allocated by task 339:
 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
 alloc_skb include/linux/skbuff.h:1057 [inline]
 netlink_dump+0x203/0x12d0 net/netlink/af_netlink.c:2219
 netlink_recvmsg+0x6bb/0x11a0 net/netlink/af_netlink.c:2001
 sock_recvmsg_nosec net/socket.c:872 [inline]
 sock_recvmsg net/socket.c:890 [inline]
 ____sys_recvmsg net/socket.c:2530 [inline]
 ___sys_recvmsg net/socket.c:2571 [inline]
 __sys_recvmsg+0x563/0x800 net/socket.c:2618
 do_syscall_64+0xcb/0x1e0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Freed by task 339:
 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
 skb_free_datagram+0x24/0xd0 net/core/datagram.c:329
 netlink_recvmsg+0x619/0x11a0 net/netlink/af_netlink.c:1997
 sock_recvmsg_nosec net/socket.c:872 [inline]
 sock_recvmsg net/socket.c:890 [inline]
 ____sys_recvmsg net/socket.c:2530 [inline]
 ___sys_recvmsg net/socket.c:2571 [inline]
 __sys_recvmsg+0x563/0x800 net/socket.c:2618
 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 ffff8881e97c4000
 which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 11 bytes to the right of
 8192-byte region [ffff8881e97c4000, ffff8881e97c6000)
The buggy address belongs to the page:
page:ffffea0007a5f000 refcount:1 mapcount:0 mapping:ffff8881f5c0c500 index:0x0 compound_mapcount: 0
flags: 0x8000000000010200(slab|head)
raw: 8000000000010200 dead000000000100 dead000000000122 ffff8881f5c0c500
raw: 0000000000000000 0000000080020002 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881e97c5f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881e97c5f80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8881e97c6000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                      ^
 ffff8881e97c6080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8881e97c6100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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