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Message-ID: <950448.6018.qm@web32607.mail.mud.yahoo.com>
Date: Tue, 19 May 2009 10:52:38 -0700 (PDT)
From: Martin Knoblauch <spamtrap@...bisoft.de>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Matt Mackall <mpm@...enic.com>, Ingo Molnar <mingo@...e.hu>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Rgeression: 2.6.30-rc6-git3 build error - ICE from drivers/char/random.c
----- Original Message ----
> From: Linus Torvalds <torvalds@...ux-foundation.org>
> To: Martin Knoblauch <spamtrap@...bisoft.de>
> Cc: Matt Mackall <mpm@...enic.com>; Ingo Molnar <mingo@...e.hu>; Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
> Sent: Tuesday, May 19, 2009 5:09:40 PM
> Subject: Re: Rgeression: 2.6.30-rc6-git3 build error - ICE from drivers/char/random.c
>
>
>
> On Tue, 19 May 2009, Martin Knoblauch wrote:
> >
> > With your patch, the problem still remains. Line 1685 is the end of the
> patched routine now.
>
> Ok, so can you do two other simple tests:
>
> - just remove the "+ (long)&ret" entirely.
>
> Now, usually gcc doesn't have issues with non-asm things, but that's an
> odd way of getting the current stack address by lookin gat the address
> of a variable that hasn't even been used, so maybe it triggers some
> untested codepath in gcc (and thus the bug).
>
Removing above fixes the ICE. It does so in both the original and the patched version.
Removing get_cycles() has no effect wrt. the ICE.
Cheers
Martin
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