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dynamic debug: move ddebug_remove_module() down into free_module()

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commit b82bab4bbe upstream.

The command

	echo "file ec.c +p" >/sys/kernel/debug/dynamic_debug/control

causes an oops.

Move the call to ddebug_remove_module() down into free_module().  In this
way it should be called from all error paths.  Currently, we are missing
the remove if the module init routine fails.

Signed-off-by: Jason Baron <jbaron@redhat.com>
Reported-by: Thomas Renninger <trenn@suse.de>
Tested-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jason Baron
2010-07-27 13:18:01 -07:00
committed by Greg Kroah-Hartman
parent f9550546e1
commit 73213a0735
1 changed files with 3 additions and 1 deletions
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4
kernel/module.c
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@@ -870,7 +870,6 @@ SYSCALL_DEFINE2(delete_module, const char __user *, name_user,
mutex_lock(&module_mutex);
/* Store the name of the last unloaded module for diagnostic purposes */
strlcpy(last_unloaded_module, mod->name, sizeof(last_unloaded_module));
ddebug_remove_module(mod->name);
free_module(mod);
out:
@@ -1533,6 +1532,9 @@ static void free_module(struct module *mod)
remove_sect_attrs(mod);
mod_kobject_remove(mod);
/* Remove dynamic debug info */
ddebug_remove_module(mod->name);
/* Arch-specific cleanup. */
module_arch_cleanup(mod);