Re: [PATCH] arm: Blacklist gcc 4.8.[012] and 4.9.0 with CONFIG_FRAME_POINTER

[Peter Hurley]

On 10/10/2014 12:36 PM, Russell King - ARM Linux wrote:
> 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?

The gcc PR linked in the commit message; see the "Known to fail" field.

Regards,
Peter Hurley
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/