Re: 2.5.63 accesses below %esp (was: Re: ntfs OOPS (2.5.63))

Alan Cox (alan@lxorguk.ukuu.org.uk)
11 Mar 2003 17:01:00 +0000

On Mon, 2003-03-10 at 07:22, Szakacsits Szabolcs wrote:
> The question is if we want to support the buggy 2.9[56] compilers or
> not. I checked Red Hat 7.3 and the latest errata gcc fixes this issue,
> the generated code is ok. But your complier didn't and probably many
> more out there don't.

I don't think gcc 2.96 had that problem. I've not seen it there, but
gcc 3.0.x certainly does and a gcc 3.0.x early 3.1.x built kernels seems
to explode randomly under load probably for this reason.

I've also not seen any problemd with this on gcc 3.2. Valgrind has some
notes on affected compilers as the valgrind app also picks up this
violation by the compiler.

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