MagicRB
diff --git a/‎kernel/module.c‎
Lines changed: 6 additions & 2 deletions b/‎kernel/module.c‎
Lines changed: 6 additions & 2 deletions
@@ -602,13 +602,16 @@ const struct kernel_symbol *find_symbol(const char *name,
 }
 EXPORT_SYMBOL_GPL(find_symbol);
 
-/* Search for module by name: must hold module_mutex. */
+/*
+ * Search for module by name: must hold module_mutex (or preempt disabled
+ * for read-only access).
+ */
 static struct module *find_module_all(const char *name, size_t len,
 				      bool even_unformed)
 {
 	struct module *mod;
 
-	module_assert_mutex();
+	module_assert_mutex_or_preempt();
 
 	list_for_each_entry(mod, &modules, list) {
 		if (!even_unformed && mod->state == MODULE_STATE_UNFORMED)
@@ -621,6 +624,7 @@ static struct module *find_module_all(const char *name, size_t len,
 
 struct module *find_module(const char *name)
 {
+	module_assert_mutex();
 	return find_module_all(name, strlen(name), false);
 }
 EXPORT_SYMBOL_GPL(find_module);
Original file line number	Diff line number	Diff line change
`@@ -602,13 +602,16 @@ const struct kernel_symbol find_symbol(const char name,`
`602`	`602`	`}`
`603`	`603`	`EXPORT_SYMBOL_GPL(find_symbol);`
`604`	`604`
`605`		`-/* Search for module by name: must hold module_mutex. */`
	`605`	`+/*`
	`606`	`+ * Search for module by name: must hold module_mutex (or preempt disabled`
	`607`	`+ * for read-only access).`
	`608`	`+ */`
`606`	`609`	`static struct module find_module_all(const char name, size_t len,`
`607`	`610`	`bool even_unformed)`
`608`	`611`	`{`
`609`	`612`	`struct module *mod;`
`610`	`613`
`611`		`- module_assert_mutex();`
	`614`	`+ module_assert_mutex_or_preempt();`
`612`	`615`
`613`	`616`	`list_for_each_entry(mod, &modules, list) {`
`614`	`617`	`if (!even_unformed && mod->state == MODULE_STATE_UNFORMED)`
`@@ -621,6 +624,7 @@ static struct module find_module_all(const char name, size_t len,`
`621`	`624`
`622`	`625`	`struct module find_module(const char name)`
`623`	`626`	`{`
	`627`	`+ module_assert_mutex();`
`624`	`628`	`return find_module_all(name, strlen(name), false);`
`625`	`629`	`}`
`626`	`630`	`EXPORT_SYMBOL_GPL(find_module);`