Re: [patch 0/5] Support for sanitization flag in low-level page allocator

Pekka Enberg
2009-05-31T06:34:15Z

Larry H. wrote:
> OK, I'm going to squeeze some time and provide patches that perform the
> same my original page bit ones did, but using kzfree. Behold code like
> in the tty buffer management, which uses the page allocator directly for
> allocations greater than PAGE_SIZE in length. That needs special
> treatment, and is exactly the reason I've proposed unconditional
> sanitization since the original patches were rejected.

You might want to also do the patch Alan suggested for the security
conscious people. That is, do a memset() in every page free and wrap
that under CONFIG_SECURITY_PARANOIA or something. There's no reason the
kzfree() patches and that can't co-exist.

Pekka