linux-kernel - Re: linux-next: Tree for August 19 (mfd/ucb)

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Date:	Tue, 19 Aug 2008 17:26:57 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Randy Dunlap <randy.dunlap@...cle.com>
Cc:	sfr@...b.auug.org.au, sam@...nborg.org, linux-next@...r.kernel.org,
	linux-kernel@...r.kernel.org, sameo@...nedhand.com
Subject: Re: linux-next: Tree for August 19 (mfd/ucb)

On Tue, 19 Aug 2008 17:05:17 -0700
Randy Dunlap <randy.dunlap@...cle.com> wrote:

> drivers/mfd/ucb1400 is a sound (AC97) driver, so it should depend
> on AC97_BUS, like in the patch below.  However, with that patch in
> place, oldconfig goes belly up on me:
> 
> 
> linux-next-20080819> make ARCH=x86_64  O=X64  V=1 oldconfig
> make -C /local/linsrc/linux-next-20080819/X64 \
> 	KBUILD_SRC=/local/linsrc/linux-next-20080819 \
> 	KBUILD_EXTMOD="" -f /local/linsrc/linux-next-20080819/Makefile \
> 	oldconfig
> make -f /local/linsrc/linux-next-20080819/scripts/Makefile.build obj=scripts/basic
> /bin/sh /local/linsrc/linux-next-20080819/scripts/mkmakefile \
> 	    /local/linsrc/linux-next-20080819 /local/linsrc/linux-next-20080819/X64 2 6
>   GEN     /local/linsrc/linux-next-20080819/X64/Makefile
> mkdir -p include/linux include/config
> make -f /local/linsrc/linux-next-20080819/scripts/Makefile.build obj=scripts/kconfig oldconfig
> scripts/kconfig/conf -o arch/x86/Kconfig
> make[2]: *** [oldconfig] Segmentation fault (core dumped)
> make[1]: *** [oldconfig] Error 2

I'm hitting that segfault as well:

akpm2:/usr/src/25> scripts/kconfig/conf -o arch/ia64/Kconfig
init/Kconfig:5:warning: environment variable KERNELVERSION undefined
zsh: segmentation fault (core dumped)  scripts/kconfig/conf -o arch/ia64/Kconfig


Can't find the core file - wtf?  Plan B:


akpm2:/usr/src/25> gdb scripts/kconfig/conf
...
This GDB was configured as "x86_64-redhat-linux-gnu"...(no debugging symbols found)

why don't we build these things with -g by default?  grump.

(gdb) r -o arch/ia64/Kconfig 
Starting program: /usr/src/devel/scripts/kconfig/conf -o arch/ia64/Kconfig
Failed to read a valid object file image from memory.
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
init/Kconfig:5:warning: environment variable KERNELVERSION undefined

Program received signal SIGSEGV, Segmentation fault.
0x000000000040419c in sym_check_deps ()
(gdb) bt
#0  0x000000000040419c in sym_check_deps ()
#1  0x0000000000404099 in sym_check_expr_deps ()
#2  0x000000000040412c in sym_check_sym_deps ()
#3  0x00000000004042f5 in sym_check_deps ()
#4  0x0000000000404099 in sym_check_expr_deps ()
#5  0x000000000040412c in sym_check_sym_deps ()
#6  0x00000000004042f5 in sym_check_deps ()
#7  0x0000000000404099 in sym_check_expr_deps ()
#8  0x0000000000404099 in sym_check_expr_deps ()
#9  0x0000000000404099 in sym_check_expr_deps ()
#10 0x0000000000404099 in sym_check_expr_deps ()
#11 0x0000000000404099 in sym_check_expr_deps ()
#12 0x0000000000404099 in sym_check_expr_deps ()
#13 0x00000000004040f2 in sym_check_sym_deps ()
#14 0x00000000004042f5 in sym_check_deps ()
#15 0x000000000040412c in sym_check_sym_deps ()
#16 0x00000000004042f5 in sym_check_deps ()
#17 0x000000000040412c in sym_check_sym_deps ()
#18 0x00000000004042f5 in sym_check_deps ()
#19 0x000000000040bb83 in conf_parse ()
#20 0x000000000040269c in main ()
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