linux-kernel - [Patch 4/4] module: trim exception table in module

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Message-Id: <20090526083751.5050.60959.sendpatchset@localhost.localdomain>
Date:	Tue, 26 May 2009 04:35:39 -0400
From:	Amerigo Wang <amwang@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	akpm@...ux-foundation.org, rusty@...tcorp.com.au,
	jdike@...toit.com, mingo@...e.hu, Amerigo Wang <amwang@...hat.com>
Subject: [Patch 4/4] module: trim exception table in module_free()


Just as the comment said, trim the exception table entries when
module_free() mod->module_init.

Signed-off-by: WANG Cong <amwang@...hat.com>
Cc: Rusty Russell <rusty@...tcorp.com.au>

---
Index: linux-2.6/arch/x86/kernel/module.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/module.c
+++ linux-2.6/arch/x86/kernel/module.c
@@ -64,8 +64,8 @@ void *module_alloc(unsigned long size)
 void module_free(struct module *mod, void *module_region)
 {
 	vfree(module_region);
-	/* FIXME: If module_region == mod->init_region, trim exception
-	   table entries. */
+	if (module_region == mod->module_init)
+		mod->num_exentries = 0;
 }
 
 /* We don't need anything special. */
--
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