linux-kernel - Re: unaligned accesses in SLAB etc.

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Date:	Mon, 20 Oct 2014 14:57:46 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	mroos@...ux.ee
Cc:	linux-kernel@...r.kernel.org, sparclinux@...r.kernel.org
Subject: Re: unaligned accesses in SLAB etc.

From: Meelis Roos <mroos@...ux.ee>
Date: Sun, 19 Oct 2014 10:07:03 +0300 (EEST)

>> From: Meelis Roos <mroos@...ux.ee>
>> Date: Fri, 17 Oct 2014 00:38:20 +0300 (EEST)
>> 
>> > arch/sparc/kernel/setup_64.c is the only culprit.
>> > 
>> > Attached are 2 versions of the object file as of v3.17-rc1-22-g480cadc 
>> > that I tested.
>> 
>> Just to confirm, a gcc-4.9 compiled kernel works if just setup_64.c
>> is built with gcc-4.6, is that correct?
> 
> Yes, exactly.

Just an update, I have an environment where I can perfectly reproduce
this.  I have a gcc-4.9 SVN built that compiles kernels which crash
the same way it does for you.

I'll let you know when I make more progress.
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