linux-kernel - Re: 2.6.23-rc6-mm1

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Message-ID: <20070918202654.GA27836@uranus.ravnborg.org>
Date:	Tue, 18 Sep 2007 22:26:54 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Miles Lane <miles.lane@...il.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Roman Zippel <zippel@...ux-m68k.org>
Subject: Re: 2.6.23-rc6-mm1

On Tue, Sep 18, 2007 at 03:42:58PM -0400, Miles Lane wrote:
> On 9/18/07, Sam Ravnborg <sam@...nborg.org> wrote:
> > Hi Miles.
> > On Tue, Sep 18, 2007 at 11:27:23AM -0400, Miles Lane wrote:
> > > Selecting Help for "Subarchitecture Type" causes "make menuconfig" to
> > > crash, and the bash display settings have to be reset.
> >
> > Not reproduceable here.
> > But I noticed that we pass a null pointer to a vsprintf function which
> > in the cases you pointed out printed a (null) at my system.
> > Could you plase try if attached patch fix your system.
> 
> Sorry, it still crashes.  I am running Ubuntu pre-6.10 (Gutsy -- the
> development version of the distro).  Maybe I should try "make
> mrproper" first?

make mrproper should not do any difference here.
I rather think you hit some ncurses bug.

If you could add '-g' to HOSTCFLAGS in top-level Makefile
and then do:
rm scripts/kconfig/mconf.o scripts/kconfig/mconf
make menuconfig

(to build mconf and to check that the error is still reproduceable).
And then run it in a debugger like this:
gdb scripts/kconfig/mconf
run arch/x86_64/Kconfig
         ^^^^^^ replace with your actual arch

Provoke the error and get a back-trace with 'bt'.

Thanks,
	Sam
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