Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758963AbXIRWmc (ORCPT ); Tue, 18 Sep 2007 18:42:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756049AbXIRWmZ (ORCPT ); Tue, 18 Sep 2007 18:42:25 -0400 Received: from ug-out-1314.google.com ([66.249.92.168]:63624 "EHLO ug-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751631AbXIRWmY (ORCPT ); Tue, 18 Sep 2007 18:42:24 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=beta; h=received:message-id:date:from:user-agent:mime-version:to:cc:subject:references:in-reply-to:content-type:content-transfer-encoding; b=ML8xZYhk2J4Ue05GSK1z6rDHruoHXD6p8gzqDMwEtrBnLXFTpz88AZFC8FMfGXNRjrxiwovU5yTLehhEFtBOwueYBxYCRLVTmAJh9HBploObUmAxgKyybzjljqOaFLDRuc1IIMJ+nr/oGBHnEUJ1XLqUWrwNfTcOIrOZRbysLhE= Message-ID: <46F05378.8020907@googlemail.com> Date: Wed, 19 Sep 2007 00:38:48 +0200 From: Gabriel C User-Agent: Thunderbird 2.0.0.6 (X11/20070803) MIME-Version: 1.0 To: Sam Ravnborg CC: Miles Lane , Andrew Morton , linux-kernel@vger.kernel.org, Roman Zippel Subject: Re: 2.6.23-rc6-mm1 References: <20070918011841.2381bd93.akpm@linux-foundation.org> <20070918191741.GA27725@uranus.ravnborg.org> <20070918202654.GA27836@uranus.ravnborg.org> In-Reply-To: <20070918202654.GA27836@uranus.ravnborg.org> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3833 Lines: 67 Sam Ravnborg wrote: > On Tue, Sep 18, 2007 at 03:42:58PM -0400, Miles Lane wrote: >> On 9/18/07, Sam Ravnborg 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'. Hi Sam, I can reproduce this bug on Frugalware Linux. Here the bt: Program received signal SIGSEGV, Segmentation fault. 0xb7dc4143 in strlen () from /lib/libc.so.6 (gdb) bt #0 0xb7dc4143 in strlen () from /lib/libc.so.6 #1 0x0804fd60 in str_append (gs=0xbfe4f6e8, s=0x0) at scripts/kconfig/util.c:87 #2 0x0804e0cb in expr_print (e=0x8e22df8, fn=0x804fda0 , data=0xbfe4f6e8, prevtoken=0) at scripts/kconfig/expr.c:1037 #3 0x0804e1e7 in expr_gstr_print (e=0x8e22df8, gs=0xbfe4f6e8) at scripts/kconfig/expr.c:1099 #4 0x0804a07e in get_symbol_str (r=0xbfe4f6e8, sym=0x8b54ee8) at scripts/kconfig/mconf.c:334 #5 0x0804a363 in show_help (menu=0x8b54f88) at scripts/kconfig/mconf.c:738 #6 0x0804acec in conf (menu=0x8b69480) at scripts/kconfig/mconf.c:781 #7 0x0804a971 in conf (menu=0x8063c40) at scripts/kconfig/mconf.c:703 #8 0x0804af8a in main (ac=Cannot access memory at address 0x0 ) at scripts/kconfig/mconf.c:917 Looks somewhat strange -> http://194.231.229.228/menuconfig.png PS: Is without the patch you posted , I'll try with in a bit > > Thanks, > Sam Gabriel - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/