linux-kernel - Re: [PATCH v2] module: don't modify argument of module_kallsyms_lookup

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Message-ID: <87fvwirdej.fsf@rustcorp.com.au>
Date:	Sun, 16 Jun 2013 12:05:16 +0930
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Mathias Krause <minipli@...glemail.com>
Cc:	Mathias Krause <minipli@...glemail.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] module: don't modify argument of module_kallsyms_lookup_name()

Mathias Krause <minipli@...glemail.com> writes:
> If we pass a pointer to a const string in the form "module:symbol"
> module_kallsyms_lookup_name() will try to split the string at the colon,
> i.e., will try to modify r/o data. That will, in fact, fail on a kernel
> with enabled CONFIG_DEBUG_RODATA.
>
> Avoid modifying the passed string in module_kallsyms_lookup_name(),
> modify find_module_all() instead to pass it the module name length.
>
> Signed-off-by: Mathias Krause <minipli@...glemail.com>

Applied, thanks.

Cheers,
Rusty.
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