linux-kernel - Re: [PATCH] Fix markup_oops to work with 32-bit userspace on a 64-bit kernel

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Message-ID: <4A7AC6FD.6080600@pardus.org.tr>
Date:	Thu, 06 Aug 2009 15:05:17 +0300
From:	Ozan Çağlayan <ozan@...dus.org.tr>
To:	Matthew Wilcox <matthew@....cx>
CC:	Arjan van de Ven <arjan@...radead.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Fix markup_oops to work with 32-bit userspace on a 64-bit
 kernel

Matthew Wilcox wrote On 13-07-2009 17:18:
> A 32-bit perl can't handle 64-bit addresses without using the BigInt package.
>
>  
> -my $decodestart = hex($target) - hex($func_offset);
> -my $decodestop = hex($target) + 8192;
> +my $decodestart = Math::BigInt->from_hex("0x$target") - Math::BigInt->from_hex("0x$func_offset");
> +my $decodestop = Math::BigInt->from_hex("0x$target") + 8192;
>  if ($target eq "0") {
>  	print "No oops found!\n";
>  	print "Usage: \n";
>   

$func_offset has already "0x" so this commit prepends another "0x"
causing decodestart to be NaN.

Regards,
Ozan
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