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Date:	Sun, 12 Oct 2014 13:06:35 -0400
From:	Andev <>
To:	Willy Tarreau <>
Cc:	Bertrand Jacquin <>,
	Rusty Russell <>,, LKML <>
Subject: Re: [PATCH 2/3] kbuild: handle module compression while running 'make modules_install'.

On Sun, Oct 12, 2014 at 12:40 PM, Willy Tarreau <> wrote:
> Hi,
> On Sun, Oct 12, 2014 at 11:50:59AM -0400, Andev wrote:
>> Hello Bertrand,
>> Does this need any user space support? Cos currently on a debian
>> testing box(powerpc) enabling this options causes a boot hang while
>> mounting the root file system.
> I suspect that your module-ini-tools/kmod are built without support for
> compressed modules. One method to verify this is to run it against ldd :
> $ ldd /sbin/modprobe
> (0x00007fff918ed000)
> => /lib64/ (0x00007ff9317f1000)
> => /lib64/ (0x00007ff9315d5000)
> => /lib64/ (0x00007ff931214000)
> => /lib64/ (0x00007ff930ff2000)
> => /usr/lib64/ (0x00007ff930ddd000)
>         /lib64/ (0x00007ff931a06000)
> As you can see, mine depends on liblzma and libz so it was clearly built
> with support for both of them.

Yes, that indeed seems to be the problem. On my machine:

$ ldd /sbin/modprobe (0x00100000) => /lib/powerpc-linux-gnu/ (0x6fe17000)
/lib/ (0x20229000)

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