[Crash-utility] [PATCH] Fix module size and num_symtab for 2.6.27

[Dave Anderson]

----- "Bernhard Walle" <bwalle at suse.de> wrote:

> This patch implements the kernel change
> 
>     commit 2f0f2a334bc38b61a9afca951185cd3844ee709d
>     Author: Denys Vlasenko <vda.linux at googlemail.com>
>     Date:   Tue Jul 22 19:24:27 2008 -0500
> 
>     module: turn longs into ints for module sizes
> 
>     This shrinks module.o and each *.ko file.
> 
>     And finally, structure members which hold length of module
>     code (four such members there) and count of symbols
>     are converted from longs to ints.
> 
>     We cannot possibly have a module where 32 bits won't
>     be enough to hold such counts.
> 
>     For one, module loading checks module size for sanity
>     before loading, so such insanely big module will fail
>     that test first.
> 
>     Signed-off-by: Denys Vlasenko <vda.linux at googlemail.com>
>     Signed-off-by: Rusty Russell <rusty at rustcorp.com.au>
> 
> in crash. Without the patch I was not able to open a core dump created
> with
> 2.6.27 on POWER. I think it's mostly a problem on big endian
> architectures,
> because on little endian you can have luck and read zeros which don't
> change
> the value of a number while on big endian you cannot have luck. ;-)
> 
> 
> Signed-off-by: Bernhard Walle <bwalle at suse.de>

I first thought these might be better served using MEMBER_SIZE(),
but I see that it's most definitely a 2.6.27 (and later) change,
and it's highly unlikely they'll ever go back to the larger sizes.

Queued for the next release.

Thanks,
  Dave