linux-kernel - Re: 2.6.32 regression: unable to handle kernel paging request

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Date:	Thu, 17 Dec 2009 21:26:26 +0100
From:	Tim Blechmann <tim@...ngt.org>
To:	linux-kernel@...r.kernel.org, Tejun Heo <tj@...nel.org>
CC:	stern@...land.harvard.edu, x86@...nel.org
Subject: Re: 2.6.32 regression: unable to handle kernel paging request

>> i cannot boot any 2.6.32 kernel (i tested back until -rc5) on my nehalem
>> machine (x86_64, 12gb ram).
>>
>> there are bug messages in various (mostly module loader) functions,
>> stating "unable to handle kernel paging request". 2.6.31 on the same
>> machine works like charm. i haven't been able to save a boot log, but it
>> didn't look too different from this:
>>
>> http://lkml.org/lkml/2009/12/8/207
> 
> trying to bisect the kernel tree,
> 405d967dc70002991f8fc35c20e0d3cbc7614f63 seems to be the first bad commit.
> during bisecting, i recorded several boot logs, which are attached.

removing module-common.lds from LDFLAGS_MODULE, my machine boots fine
and without any error messages:

--- a/Makefile
+++ b/Makefile
@@ -326,7 +326,7 @@ CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
 MODFLAGS       = -DMODULE
 CFLAGS_MODULE   = $(MODFLAGS)
 AFLAGS_MODULE   = $(MODFLAGS)
-LDFLAGS_MODULE  = -T $(srctree)/scripts/module-common.lds
+LDFLAGS_MODULE  =
 CFLAGS_KERNEL  =
 AFLAGS_KERNEL  =
 CFLAGS_GCOV    = -fprofile-arcs -ftest-coverage

i hope someone with more insights in these parts of the kernel can have
a closer look into this issue.

thanks, tim

-- 
tim@...ngt.org
http://tim.klingt.org

Wherever we are, what we hear is mostly noise. When we ignore it, it
disturbs us. When we listen to it, we find it fascinating.
  John Cage


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