linux-kernel - Re: [PATCH] arm: Blacklist gcc 4.8.[012] and 4.9.0 with CONFIG_FRAME

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Date:	Fri, 10 Oct 2014 17:36:13 +0100
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Peter Hurley <peter@...leysoftware.com>
Cc:	Aaro Koskinen <aaro.koskinen@....fi>,
	Johannes Weiner <hannes@...xchg.org>,
	linux-kernel@...r.kernel.org, Felipe Balbi <balbi@...com>,
	Rabin Vincent <rabin@....in>
Subject: Re: [PATCH] arm: Blacklist gcc 4.8.[012] and 4.9.0 with
	CONFIG_FRAME_POINTER

On Fri, Oct 10, 2014 at 12:26:14PM -0400, Peter Hurley wrote:
> gcc versions 4.8.[012] and 4.9.0 generates code that prematurely
> adjusts the stack pointer such that still-to-be-referenced locals
> are below the stack pointer, which allows them to be overwritten
> by interrupts.

I would much rather do this in asm-offsets.c, along side the other ARM
specific buggy compiler test(s).  I'm presently putting together such
a patch.

The information in the thread on linux-omap says only GCC 4.8.1 and
GCC 4.8.2.  Where do you get the other versions from?

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