From: Ustyugov Roman <dr_unique@ymg.ru>
To: linux-kernel@vger.kernel.org
Subject: [BUG] module-init-tools
Date: Mon, 19 Sep 2005 14:32:58 +0400
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Hello!

I found a bug in module-init-tools.

'lsmod' shows a wrong module name, when module name complied with some 
"define" at one of kernel header files.

For example,

File "current.c"
=======================
#include <linux/kernel.h>
#include <linux/module.h>

int init_module(void) {

? ? return 0;
}

void cleanup_module() {
}

MODULE_LICENSE("GPL");
=======================

Makefile:

=======================
obj-m ? += current.o
=======================

Make this module and type commands:

insmod current.ko
lsmod

And we can see:

Module ? ? ? ? ? ? ? ? ?Size ?Used by
get_current() ? ? ? ? ? 1152 ?0 ? ? ? ? ? ? <---- Oops, ?must be 'current'
smbfs ? ? ? ? ? ? ? ? ?61432 ?2
hfsplus ? ? ? ? ? ? ? ?56708 ?0
nls_cp866 ? ? ? ? ? ? ? 5120 ?1
nls_iso8859_1 ? ? ? ? ? 4096 ?0
nls_cp437 ? ? ? ? ? ? ? 5760 ?0
vfat ? ? ? ? ? ? ? ? ? 12800 ?0
fat ? ? ? ? ? ? ? ? ? ?37916 ?1 vfat
nls_utf8 ? ? ? ? ? ? ? ?2048 ?1
? ? ? ? ? ?.....

File <asm/current.h>: 

===================
? ? ? ? ? ...
#define ? ?current ? ?get_current()
? ? ? ? ? ...
===================

Try to remove module:

romanu:/current # rmmod current
ERROR: Module current does not exist in /proc/modules
romanu:/current # rmmod -v "get_current()"
rmmod get_current(), wait=no
romanu:/current # 

I can't remove module with 'rmmod current', 
but can with 
????????rmmod "get_current()"

Is it a bug?

Then, next example.

File 'init_stack.c'
=================
#include <linux/kernel.h>
#include <linux/module.h>

int init_module(void) {

? ? return 0;
}

void cleanup_module() {
}

MODULE_LICENSE("GPL");
=================

Make and insert module 'init_stack.ko':

lsmod:

Module ? ? ? ? ? ? ? ? ?Size ?Used by
get_current() ? ? ? ? ? 1152 ?0
(init_thread_union.stack) ? ? 1152 ?0 ? ?<---- Oops, ?must be 'init_stack'
smbfs ? ? ? ? ? ? ? ? ?61432 ?2
hfsplus ? ? ? ? ? ? ? ?56708 ?0
nls_cp866 ? ? ? ? ? ? ? 5120 ?1
nls_iso8859_1 ? ? ? ? ? 4096 ?0

Now I can't to remove it at all ! :(:(

>From <asm/thread_info.h>

====================
????????...
#define init_stack ? ? ? ? ? ? ?(init_thread_union.stack)
????????...
====================

Some information about software:

OS: SuSE Pro 9.3
kernel version: ?2.6.11.4-21.8-default
module-init-tools version: 3.2_pre1-7

--
WBR, Roman.
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