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* segmentation fault of modpost
@ 2012-02-22  7:17 Hitoshi Mitake
  2012-02-23  0:13 ` H. Peter Anvin
  0 siblings, 1 reply; 2+ messages in thread
From: Hitoshi Mitake @ 2012-02-22  7:17 UTC (permalink / raw)
  To: Rusty Russell, Ingo Molnar; +Cc: LKML

Hi,

I tried to build tip-tree with allmodconfig and ARCH=i386 on x86_64 machine.
And modpost caused segmentation fault like this:
modpost[23652]: segfault at 2b53bece3000 ip 00000000004030bb sp
00007ffffad8d260 error 4 in modpost[400000+d000]
# from dmesg

The commit of -tip tree is 64256eb8e9f8cd53100ee6142968df336c54eb32.

Is this problem already reported or solved?
If not, I'd like to solve this because I need to build all{mod,yes}config
kernel for testing readq/writeq of x86.

Thanks,

-- 
Hitoshi Mitake
h.mitake@gmail.com

^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: segmentation fault of modpost
  2012-02-22  7:17 segmentation fault of modpost Hitoshi Mitake
@ 2012-02-23  0:13 ` H. Peter Anvin
  0 siblings, 0 replies; 2+ messages in thread
From: H. Peter Anvin @ 2012-02-23  0:13 UTC (permalink / raw)
  To: Hitoshi Mitake; +Cc: Rusty Russell, Ingo Molnar, LKML

On 02/21/2012 11:17 PM, Hitoshi Mitake wrote:
> Hi,
> 
> I tried to build tip-tree with allmodconfig and ARCH=i386 on x86_64 machine.
> And modpost caused segmentation fault like this:
> modpost[23652]: segfault at 2b53bece3000 ip 00000000004030bb sp
> 00007ffffad8d260 error 4 in modpost[400000+d000]
> # from dmesg
> 
> The commit of -tip tree is 64256eb8e9f8cd53100ee6142968df336c54eb32.
> 
> Is this problem already reported or solved?
> If not, I'd like to solve this because I need to build all{mod,yes}config
> kernel for testing readq/writeq of x86.
> 

I cannot reproduce this on a Fedora 15 development system.  I have to
turn off two modules:

CONFIG_SCx200HR_TIMER=n
CONFIG_ANDROID_BINDER_IPC=n

... but modpost runs just fine.  It would be good if you could compile
modpost with -g and see where in the code the failure happens.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.


^ permalink raw reply	[flat|nested] 2+ messages in thread

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