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Message-ID: <81083a450512120444v56038320k6feffa34257a933d@mail.gmail.com>
Date: Mon, 12 Dec 2005 18:14:08 +0530
From: Ashutosh Naik <ashutosh.naik@gmail.com>
To: linux-kernel@vger.kernel.org, rusty@rustcorp.com.au, rth@redhat.com,
       akpm@osdl.org, Greg KH <greg@kroah.com>
Subject: Re: [RFC][PATCH] Prevent overriding of Symbols in the Kernel, avoiding Undefined behaviour
Cc: anandhkrishnan@yahoo.co.in
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Updating the correct email id of Anand Krishnan
Signed-off-by: Anand Krishnan <anandhkrishnan@yahoo.co.in>

On 12/12/05, Ashutosh Naik <ashutosh.naik@gmail.com> wrote:
> This patch is the next logical step after the following two  threads
>
> http://www.uwsg.iu.edu/hypermail/linux/kernel/0511.2/2505.html
> http://www.ussg.iu.edu/hypermail/linux/kernel/0511.3/0036.html
>
> When a symbol is exported from the kernel, and say, a module would
> export the same symbol, there currently exists no mechanism to prevent
> the module from exporting this symbol. The module would still go ahead
> and export the symbol, the symbol table would now contain two copies
> of the exported symbol, and hell would break loose.
>
> This patch prevents that from happening, by checking the symbol table
> before relocation for all occurences of the Exported Symbol. If the
> symbol already exists, we branch out with -ENOEXEC. Currently, this
> search is sequential.
>
>
> Signed-off-by: Ashutosh Naik <ashutosh.naik@gmail.com>
> Signed-off-by: Anand Krishnan <anandhkrishnan@yahoo.com>
>
>
>
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