linux-kernel - Re: BUG? atleast >=2.6.19-rc5, x86 chroot on x86

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Date:	Sun, 26 Nov 2006 19:52:11 +0000
From:	Alistair John Strachan <s0348365@....ed.ac.uk>
To:	Kasper Sandberg <lkml@...anurb.dk>
Cc:	Andrew Morton <akpm@...l.org>,
	LKML Mailinglist <linux-kernel@...r.kernel.org>
Subject: Re: BUG? atleast >=2.6.19-rc5, x86 chroot on x86_64| perhaps duplicate bug report?

On Sunday 26 November 2006 18:07, Kasper Sandberg wrote:
> On Wed, 2006-11-22 at 15:25 -0800, Andrew Morton wrote:
> > On Wed, 22 Nov 2006 15:29:02 +0100
> >
> > Kasper Sandberg <lkml@...anurb.dk> wrote:
> > > it appears some sort of bug has gotten into .19, in regards to x86
> > > emulation on x86_64.
> > >
> > > i have only tested with >=rc5, thw folling, as an example, appears in
> > > dmesg:
> > > ioctl32(regedit.exe:11801): Unknown cmd fd(9) cmd(82187201){02}
> > > arg(00221000) on /home/redeeman
> > > ioctl32(regedit.exe:11801): Unknown cmd fd(9) cmd(82187201){02}
> > > arg(00221000) on /home/redeeman/.wine/drive_c/windows/system32
> >
> > Try
> >
> > 	echo 0 > /proc/sys/kernel/compat-log
> >
> > I don't _think_ we did anything to change the logging in there.  Which
> > kernel version were you using previously (the one which didn't do this)?
>
> it just struck me, that this may be the same bug Jesper Juhl has
> discovered (atleast the hardlock part), as i read that thread, it strike
> me that whenever i have hardlocks from this, its when i in wine runs
> stuff that uses basically all my ram, and MAY even touch my swap.

I see this same ioctl32 warning on a few apps running inside Wine, but I've 
not had any hard locks. On the contrary, everything works fine.

I guess it would be nice to know which ioctl it is that doesn't have a compat 
wrapper on x86-64, 82187201 is a bit cryptic.

HTH.

-- 
Cheers,
Alistair.

Final year Computer Science undergraduate.
1F2 55 South Clerk Street, Edinburgh, UK.
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