Bug#464953: ptpatch2008.c does not work

["Nikita V. Youshchenko" <yoush@cs.msu.su>]

> but seems to be another solution which apparently compiles to a kernel
> module which will catch and report attempts to (ab)use vmsplice at
> http://home.powertech.no/oystein/ptpatch2008/ptpatch2008.c

I've just tried to compile this module.
It successfully insmod'ed:

Feb 11 12:54:29 zigzag kernel: ptpatch2008: init, (c) 2008 
oystein@powertech.no
Feb 11 12:54:29 zigzag kernel: ptpatch2008: syscalls c02ea3c0
Feb 11 12:54:29 zigzag kernel: hooked sys_vmsplice

However exploit code from the top of 
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=464953 still works:

nikita@zigzag:~/adm/hotfix> ./exploit
-----------------------------------
 Linux vmsplice Local Root Exploit
 By qaaz
-----------------------------------
[+] mmap: 0x0 .. 0x1000
[+] page: 0x0
[+] page: 0x20
[+] mmap: 0x4000 .. 0x5000
[+] page: 0x4000
[+] page: 0x4020
[+] mmap: 0x1000 .. 0x2000
[+] page: 0x1000
[+] mmap: 0xb7d97000 .. 0xb7dc9000
[+] root
root@zigzag:~/adm/hotfix> whoami
root