Bug#815125: Boot failure with Debian linux 4.4.2 package

From	Matt Fleming <matt@codeblueprint.co.uk>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#815125: Boot failure with Debian linux 4.4.2 package
Date	2016-03-10 17:50 +0100
Message-ID	<rbbWG-1kz-3@gated-at.bofh.it> (permalink)
References	(5 earlier) <r92Xx-2wT-47@gated-at.bofh.it> <razRo-8nN-13@gated-at.bofh.it> <raNrk-Hp-3@gated-at.bofh.it> <raUsP-5Y7-33@gated-at.bofh.it> <raVoS-6Iz-9@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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On Wed, 09 Mar, at 10:56:07PM, Matt Fleming wrote:
> On Wed, 09 Mar, at 11:01:18PM, Alexis Murzeau wrote:
> > 
> > Indeed I get the "Could not reserve range" message, and with a kernel
> > v4.3 the physical address 0x1 contains the value 1.
> > And this patch works and make a unmodified + this patch 4.4 debian
> > kernel boots, nice well found :)
>  
> Great, thanks for testing.
> 
> > However, now a bad page state is reported in dmesg (which doesn't seem
> > to affect the kernel to me as a user but might hide something buggy) :
> > [    0.030096] BUG: Bad page state in process swapper/0  pfn:00000
> > [    0.030100] page:ffffea0000000000 count:0 mapcount:1 mapping:
> >    (null) index:0x0
> > [    0.030102] flags: 0x0()
> > 
> > The efi_free_boot_services function seems to expect size == 0 to not
> > free non reserved memory according to commit 7d68dc3.
> > Not sure if this bad page state is related to this patch though, but I
> > don't get this with the 4.3 kernel.
> 
> Yeah, it's definitely related to my quick and dirty patch. I'll have a
> think about how to fix it properly tomorrow morning.

Alexis, could you, and anybody else that hit this bug, please try out
the attached patch? If it works for you I'll pull it into the EFI tree
ASAP - the merge window is approaching fast.

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Bug#815125: Boot failure with Debian linux 4.4.2 package Matt Fleming <matt@codeblueprint.co.uk> - 2016-02-29 13:30 +0100
  Bug#815125: Boot failure with Debian linux 4.4.2 package Matt Fleming <matt@codeblueprint.co.uk> - 2016-03-04 19:50 +0100
    Bug#815125: Boot failure with Debian linux 4.4.2 package Matt Fleming <matt@codeblueprint.co.uk> - 2016-03-10 17:50 +0100

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