linux-kernel - Re: aranym bug, manifests as "ida_remove called for id=13" on recent kernels

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Message-ID: <20101011024103.GH19804@ZenIV.linux.org.uk>
Date:	Mon, 11 Oct 2010 03:41:03 +0100
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	linux-m68k@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: aranym bug, manifests as "ida_remove called for id=13" on recent
 kernels

On Mon, Oct 11, 2010 at 12:52:56AM +0100, Al Viro wrote:
> On Sun, Oct 10, 2010 at 10:18:03PM +0200, Geert Uytterhoeven wrote:
> > >> This is on aranym-0.9.9-1 from Ubuntu/amd64.
> > >
> > > stat -L /proc/2/exec, otherwise you'll hit lstat() instead of stat().
> > > And FWIW 0.9.10-1 squeeze/amd64 also triggers here...
> > 
> > Still, just "stat: cannot stat `proc/2/exe': No such file or directory" here...
> 
> Interesting...  Which gcc version is used?

Argh...  OK, going through aranym with debugger has exhonorated it.  My
apologies ;-/  It *is* gcc in sid.  Testcase:

extern int foo(int);
void *bar(int n)
{
        return (void *)foo(n);
}

and gcc -S -O2 turns that into
bar:
        link.w %fp,#0
        unlk %fp
        jra foo

Spot the obvious bug...  BTW, why on the Earth does debian-ports m68k tree
use gcc-4.3 with Cthulhu-scaring 700Kb gzipped patch and does *not* have
gcc-4.4?
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