linux-kernel - Re: [PATCH] SUNRPC: Prevent kernel stack corruption on long values of flush

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Message-ID: <507EF918.5030004@panasas.com>
Date:	Wed, 17 Oct 2012 11:29:44 -0700
From:	Boaz Harrosh <bharrosh@...asas.com>
To:	Jim Rees <rees@...ch.edu>
CC:	Dave Jones <davej@...hat.com>,
	"J. Bruce Fields" <bfields@...ldses.org>,
	Sasha Levin <levinsasha928@...il.com>,
	<Trond.Myklebust@...app.com>, <davem@...emloft.net>,
	<linux-nfs@...r.kernel.org>, <netdev@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] SUNRPC: Prevent kernel stack corruption on long values
 of flush

On 07/18/2012 01:55 PM, Jim Rees wrote:
> Dave Jones wrote:
> 
>   
>   Unsigned long isn't necessarily 32 bits.
>   On 64-bit systems %lu can be up to 18446744073709551615
> 
> Thanks.  You caught me thinking "Intel."  How embarrassing.

What? why even on Intel-64 long is 64bit. long is always the
same or bigger then a pointer (A pointer must always fit
in a long)

On the other hand int is 32bit in Intel-64 unlike some
other CPUs where int(s) may get to be 64bit as well.

Cheers
Boaz
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