Commit 19d28668 authored by Jialin Zhang's avatar Jialin Zhang
Browse files

Revert "modules: only allow symbol_get of EXPORT_SYMBOL_GPL modules" 

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I95JOC



--------------------------------

This reverts commit c51cbcde.

Signed-off-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
parent 1ac2d747

kernel/module.c

+2 −13
Original line number Diff line number Diff line
@@ -2289,26 +2289,15 @@ static void free_module(struct module *mod) 
void *__symbol_get(const char *symbol)

{

	struct module *owner;

	enum mod_license license;

	const struct kernel_symbol *sym;



	preempt_disable();

	sym = find_symbol(symbol, &owner, NULL, &license, true, true);

	if (!sym)

		goto fail;

	if (license != GPL_ONLY) {

		pr_warn("failing symbol_get of non-GPLONLY symbol %s.\n",

			symbol);

		goto fail;

	}

	if (strong_try_module_get(owner))

	sym = find_symbol(symbol, &owner, NULL, NULL, true, true);

	if (sym && strong_try_module_get(owner))

		sym = NULL;

	preempt_enable();



	return sym ? (void *)kernel_symbol_value(sym) : NULL;

fail:

	preempt_enable();

	return NULL;

}

EXPORT_SYMBOL_GPL(__symbol_get);