On Mon, 28 Apr 2008 14:23:58 -0500
Russ Anderson <rja@xxxxxxx> wrote:
> --- test.orig/include/linux/kernel.h 2008-04-25 15:22:07.640501421 -0500
> +++ test/include/linux/kernel.h 2008-04-25 15:42:02.826266036 -0500
> @@ -412,6 +412,7 @@ struct sysinfo {
> unsigned long totalhigh; /* Total high memory size */
> unsigned long freehigh; /* Available high memory size */
> unsigned int mem_unit; /* Memory unit size in bytes */
> + unsigned int badpages; /* Number of bad (PG_memerror) pages */
> char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding: libc5 uses this.. */
> };
eek. sys_sysinfo() copies this structure out to userspace verbatim.
Increasing its size by four bytes will cause memory scribbles in userspace
applications.
That's fixable by suitably adjusting sysinfo._f, but given the lack of
version information in the sysinfo struct, I'm not sure how useful this
change really is.
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