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Removed the MODULE_SIG_FORCE-means-no-MODULE_FORCE_LOAD patch.

Browse source 
Only interesting thing here is Jessica's patch to add ro_after_init support
 to modules.  The rest are all trivia.
 
 Cheers,
 Rusty.
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Merge tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux

Pull module updates from Rusty Russell:
 "The only interesting thing here is Jessica's patch to add
  ro_after_init support to modules.  The rest are all trivia"

* tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
  extable.h: add stddef.h so "NULL" definition is not implicit
  modules: add ro_after_init support
  jump_label: disable preemption around __module_text_address().
  exceptions: fork exception table content from module.h into extable.h
  modules: Add kernel parameter to blacklist modules
  module: Do a WARN_ON_ONCE() for assert module mutex not held
  Documentation/module-signing.txt: Note need for version info if reusing a key
  module: Invalidate signatures on force-loaded modules
  module: Issue warnings when tainting kernel
  module: fix redundant test.
  module: fix noreturn attribute for __module_put_and_exit()
This commit is contained in:
Linus Torvalds 2016-08-04 09:14:38 -04:00
commit fb1b83d3ff
8 changed files with 155 additions and 52 deletions
Download patch file Download diff file Expand all files Collapse all files

32
include/linux/extable.h Normal file
View file

@ -0,0 +1,32 @@
#ifndef _LINUX_EXTABLE_H
#define _LINUX_EXTABLE_H
#include <linux/stddef.h> /* for NULL */
struct module;
struct exception_table_entry;
const struct exception_table_entry *
search_extable(const struct exception_table_entry *first,
const struct exception_table_entry *last,
unsigned long value);
void sort_extable(struct exception_table_entry *start,
struct exception_table_entry *finish);
void sort_main_extable(void);
void trim_init_extable(struct module *m);
/* Given an address, look for it in the exception tables */
const struct exception_table_entry *search_exception_tables(unsigned long add);
#ifdef CONFIG_MODULES
/* For extable.c to search modules' exception tables. */
const struct exception_table_entry *search_module_extables(unsigned long addr);
#else
static inline const struct exception_table_entry *
search_module_extables(unsigned long addr)
{
return NULL;
}
#endif /*CONFIG_MODULES*/
#endif /* _LINUX_EXTABLE_H */

37
include/linux/module.h
View file

@ -18,6 +18,7 @@
#include <linux/moduleparam.h>
#include <linux/jump_label.h>
#include <linux/export.h>
#include <linux/extable.h> /* only as arch move module.h -> extable.h */
#include <linux/rbtree_latch.h>
#include <linux/percpu.h>
@ -37,6 +38,7 @@ struct modversion_info {
};
struct module;
struct exception_table_entry;
struct module_kobject {
struct kobject kobj;
@ -155,18 +157,6 @@ extern void cleanup_module(void);
#define __INITRODATA_OR_MODULE __INITRODATA
#endif /*CONFIG_MODULES*/
/* Archs provide a method of finding the correct exception table. */
struct exception_table_entry;
const struct exception_table_entry *
search_extable(const struct exception_table_entry *first,
const struct exception_table_entry *last,
unsigned long value);
void sort_extable(struct exception_table_entry *start,
struct exception_table_entry *finish);
void sort_main_extable(void);
void trim_init_extable(struct module *m);
/* Generic info of form tag = "info" */
#define MODULE_INFO(tag, info) __MODULE_INFO(tag, tag, info)
@ -268,9 +258,6 @@ extern const typeof(name) __mod_##type##__##name##_device_table \
* files require multiple MODULE_FIRMWARE() specifiers */
#define MODULE_FIRMWARE(_firmware) MODULE_INFO(firmware, _firmware)
/* Given an address, look for it in the exception tables */
const struct exception_table_entry *search_exception_tables(unsigned long add);
struct notifier_block;
#ifdef CONFIG_MODULES
@ -311,6 +298,8 @@ struct module_layout {
unsigned int text_size;
/* Size of RO section of the module (text+rodata) */
unsigned int ro_size;
/* Size of RO after init section */
unsigned int ro_after_init_size;
#ifdef CONFIG_MODULES_TREE_LOOKUP
struct mod_tree_node mtn;
@ -575,8 +564,8 @@ int module_kallsyms_on_each_symbol(int (*fn)(void *, const char *,
struct module *, unsigned long),
void *data);
extern void __module_put_and_exit(struct module *mod, long code)
__attribute__((noreturn));
extern void __noreturn __module_put_and_exit(struct module *mod,
long code);
#define module_put_and_exit(code) __module_put_and_exit(THIS_MODULE, code)
#ifdef CONFIG_MODULE_UNLOAD
@ -630,9 +619,6 @@ const char *module_address_lookup(unsigned long addr,
int lookup_module_symbol_name(unsigned long addr, char *symname);
int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name);
/* For extable.c to search modules' exception tables. */
const struct exception_table_entry *search_module_extables(unsigned long addr);
int register_module_notifier(struct notifier_block *nb);
int unregister_module_notifier(struct notifier_block *nb);
@ -657,13 +643,6 @@ static inline bool is_livepatch_module(struct module *mod)
#else /* !CONFIG_MODULES... */
/* Given an address, look for it in the exception tables. */
static inline const struct exception_table_entry *
search_module_extables(unsigned long addr)
{
return NULL;
}
static inline struct module *__module_address(unsigned long addr)
{
return NULL;
@ -788,12 +767,12 @@ extern int module_sysfs_initialized;
#ifdef CONFIG_DEBUG_SET_MODULE_RONX
extern void set_all_modules_text_rw(void);
extern void set_all_modules_text_ro(void);
extern void module_enable_ro(const struct module *mod);
extern void module_enable_ro(const struct module *mod, bool after_init);
extern void module_disable_ro(const struct module *mod);
#else
static inline void set_all_modules_text_rw(void) { }
static inline void set_all_modules_text_ro(void) { }
static inline void module_enable_ro(const struct module *mod) { }
static inline void module_enable_ro(const struct module *mod, bool after_init) { }
static inline void module_disable_ro(const struct module *mod) { }
#endif