Re: [Linux-ia64] Re: patch for IA64: fix do_sys32_msgrcv bad address error.

From: Don Dugger <n0ano_at_n0ano.com>
Date: 2002-09-06 02:43:12
Yes, but Dave Millier claims that this patch is still broken, he says the
fix needs to be in `ipc_kludge'.  I don't have access to my source tree
until this evening, have you looked at this?

On Thu, Sep 05, 2002 at 09:51:48AM -0700, David Mosberger wrote:
> >>>>> On Thu, 5 Sep 2002 19:46:40 +0530, "R Sreelatha" <rsreelat@in.ibm.com> said:
> 
>   R> In sys_ia32.c file, in the do_sys32_msgrcv() function call, the
>   R> value of ipck.msgp is interpreted as a 64 bit address, whereas it
>   R> is a 32 bit address.  Hence, do_sys32_msgrcv() finally returns
>   R> EFAULT(bad address) error.  The patch below takes care of this by
>   R> type casting ipck.msgp to type u32.  The patch is created for
>   R> 2.5.32 version of the kernel.
> 
> Yes, this was obviously broken.  I committed the attached patch to my 2.5
> tree.
> 
> 	--david
> 
> # This is a BitKeeper generated patch for the following project:
> # Project Name: Linux kernel tree
> # This patch format is intended for GNU patch command version 2.5 or higher.
> # This patch includes the following deltas:
> #	           ChangeSet	1.532   -> 1.533  
> #	arch/ia64/ia32/sys_ia32.c	1.18    -> 1.19   
> #
> # The following is the BitKeeper ChangeSet Log
> # --------------------------------------------
> # 02/09/05	davidm@tiger.hpl.hp.com	1.533
> # ia64: Fix x86 struct ipc_kludge (reported by R Sreelatha, fix proposed by
> # 	Dave Miller).
> # --------------------------------------------
> #
> diff -Nru a/arch/ia64/ia32/sys_ia32.c b/arch/ia64/ia32/sys_ia32.c
> --- a/arch/ia64/ia32/sys_ia32.c	Thu Sep  5 09:51:05 2002
> +++ b/arch/ia64/ia32/sys_ia32.c	Thu Sep  5 09:51:05 2002
> @@ -2111,8 +2111,8 @@
>  };
>  
>  struct ipc_kludge {
> -	struct msgbuf *msgp;
> -	long msgtyp;
> +	u32 msgp;
> +	s32 msgtyp;
>  };
>  
>  #define SEMOP		 1
> 
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> Linux-IA64@linuxia64.org
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-- 
Don Dugger
"Censeo Toto nos in Kansa esse decisse." - D. Gale
n0ano@n0ano.com
Received on Thu Sep 05 09:59:32 2002

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