Messages in this thread | | | Date | Wed, 10 Sep 2014 11:38:47 -0400 | From | Vivek Goyal <> | Subject | Re: [PATCH 1/4] kaslr: check user's config too when handle relocations |
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On Wed, Sep 10, 2014 at 11:27:16PM +0800, Baoquan He wrote: > On 09/10/14 at 11:05am, Vivek Goyal wrote: > > On Wed, Sep 10, 2014 at 07:41:38AM -0700, Kees Cook wrote: > > > On Wed, Sep 10, 2014 at 7:30 AM, Vivek Goyal <vgoyal@redhat.com> wrote: > > > > So I would suggest that test and repost the other patch with proper changelog > > > > and that might be sufficient for now. Only other thing we will need is > > > > Kees's patch for avoiding setup data regions in kaslr. > > > > > > If someone can confirm that my patch works, I can request x86 pull it. > > > > > > Currently living here: > > > https://git.kernel.org/cgit/linux/kernel/git/kees/linux.git/log/?h=kaslr > > > > > > > Bao, > > > > Can you please test Kees's patch and provide feedback. > > I can only use a trick by setting the E820_MAX to a very small number, > say 10 in kexec-tools. Then extra memory regions will be added into > setup data. Sufficient real test can't be taken by me since lack of > machine.
I think modifying kexec-tools test should be good. Also we prepare an kexec specific data blob for EFI machines and pass to second kernel through setup_data. We can put some printk and make sure this patch avoids that region.
Thanks Vivek
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