linux-kernel - Re: build #343 issue for v2.6.24-rc8-29-g03bbe08 : Section mismatch: reference to .init.text.1:start_kernel (between 'is386' and 'check

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Message-ID: <20080118124627.GA17918@uranus.ravnborg.org>
Date:	Fri, 18 Jan 2008 13:46:27 +0100
From:	Sam Ravnborg <sam@...nborg.org>
To:	WANG Cong <xiyou.wangcong@...il.com>
Cc:	Toralf Förster <toralf.foerster@....de>,
	linux-kernel@...r.kernel.org, rusty@...tcorp.com.au
Subject: Re: build #343 issue for v2.6.24-rc8-29-g03bbe08 : Section mismatch: reference to .init.text.1:start_kernel (between 'is386' and 'check_x87')

On Fri, Jan 18, 2008 at 08:29:17PM +0800, WANG Cong wrote:
> On Fri, Jan 18, 2008 at 01:18:27PM +0100, Toralf Förster wrote:
> >Hello,
> >
> >the build with the attached .config was successful however I got during make :
> >  AS      .tmp_kallsyms2.o
> >  LD      vmlinux.o
> >  MODPOST vmlinux.o
> >WARNING: vmlinux.o(.text.head+0x247): Section mismatch: reference to .init.text.1:start_kernel (between 'is386' and 'check_x87')
> >  CHK     include/linux/version.h
> >  HOSTCC  scripts/unifdef
> >  MKDIR   include
> >
> >Does it help / make sense to report such warning ?
> >
> >The build was made with :
> >$> make mrproper && make rndconfig && <tweak config file> && make oldconfig && make
> >
> >Here's the config:
> 
> Thanks. You have reported this. ;)
> 
> I can't solve this problem. Let's Cc Rusty and Sam to see
> if they can solve this.

modpost gets confused by the section named ".init.text.1" - the additional '.1'
is unexpected.

Following untested patch should fix it.

	Sam

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 93ac52a..b5f1cff 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -736,8 +736,8 @@ static int secref_whitelist(const char *modname, const char *tosec,
 
 	/* Check for pattern 3 */
 	if ((strcmp(fromsec, ".text.head") == 0) &&
-		((strcmp(tosec, ".init.data") == 0) ||
-		(strcmp(tosec, ".init.text") == 0)))
+		((strncmp(tosec, ".init.data", strlen(".init.data")) == 0) ||
+		(strncmp(tosec, ".init.text", strlen(".init.text")) == 0)))
 	return 1;
 
 	/* Check for pattern 4 */
--
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