From 4f6de4d51f4a3ab06a85e91e708cc89a513ef30c Mon Sep 17 00:00:00 2001
From: Mathias Krause <minipli@googlemail.com>
Date: Tue, 2 Jul 2013 15:35:11 +0930
Subject: [PATCH] module: don't modify argument of
 module_kallsyms_lookup_name()

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@googlemail.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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