Date: Thu, 7 Dec 2017 15:32:03 +1100 From: "Tobin C. Harding" <me@...in.cc> To: kaiwan.billimoria@...il.com Cc: Alexander Kapshuk <alexander.kapshuk@...il.com>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, "kernel-hardening@...ts.openwall.com" <kernel-hardening@...ts.openwall.com> Subject: Re: [PATCH v4] leaking_addresses: add support for x86 32-bit kernel addresses On Thu, Dec 07, 2017 at 08:47:36AM +0530, kaiwan.billimoria@...il.com wrote: > Currently, leaking_addresses.pl only supports scanning 64 bit > architectures. This is due to how the regular expressions are formed. We > can do better than this. 32 architectures can be supported if we take > into consideration the kernel virtual address split (via the PAGE_OFFSET > kernel configurable). > > Add support for ix86 32 bit architectures. > - Add command line option for page offset. > - Add command line option for kernel configuration file. > - Parse kernel config file for page offset (CONFIG_PAGE_OFFSET). > - Use page offset when checking for kernel virtual addresses. > > > Signed-off-by: Kaiwan N Billimoria <kaiwan.billimoria@...il.com> > --- > > Ok, this patch is the same as the previous v3, with suggestions from Tobin incorporated: > - newline in sub is_false_positive_ix86_32 > - refactoring of code to remove the temp file in sub get_page_offset > - git short desc delibrately modified to make it more appropriate. Cool, this is all good. I'm not going to apply it because of our previous discussion on doing a general 32 bit implementation. I've just finished doing some work to lay the ground for that. Posting the patch set now. thanks, Tobin.
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