Re: [PATCH v2] module: Add CONFIG_MODULE_LOAD_IN_SEQUENCE option

From: kernel test robot
Date: Wed Oct 11 2023 - 07:01:57 EST

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Hi Joey,

kernel test robot noticed the following build warnings:

[auto build test WARNING on mcgrof/modules-next]
[also build test WARNING on linus/master v6.6-rc5 next-20231011]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url: https://github.com/intel-lab-lkp/linux/commits/Joey-Jiao/module-Add-CONFIG_MODULE_LOAD_IN_SEQUENCE-option/20231011-154640
base: https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux.git modules-next
patch link: https://lore.kernel.org/r/20231011074438.6098-1-quic_jiangenj%40quicinc.com
patch subject: [PATCH v2] module: Add CONFIG_MODULE_LOAD_IN_SEQUENCE option
config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20231011/202310111840.ufGoxyfM-lkp@xxxxxxxxx/config)
compiler: m68k-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231011/202310111840.ufGoxyfM-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202310111840.ufGoxyfM-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

kernel/module/main.c: In function 'do_init_module':
kernel/module/main.c:2627:12: error: invalid storage class for function 'may_init_module'
2627 | static int may_init_module(void)
| ^~~~~~~~~~~~~~~
kernel/module/main.c:2636:13: error: invalid storage class for function 'finished_loading'
2636 | static bool finished_loading(const char *name)
| ^~~~~~~~~~~~~~~~
kernel/module/main.c:2657:12: error: invalid storage class for function 'module_patient_check_exists'
2657 | static int module_patient_check_exists(const char *name,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
kernel/module/main.c:2701:12: error: invalid storage class for function 'add_unformed_module'
2701 | static int add_unformed_module(struct module *mod)
| ^~~~~~~~~~~~~~~~~~~
kernel/module/main.c:2722:12: error: invalid storage class for function 'complete_formation'
2722 | static int complete_formation(struct module *mod, struct load_info *info)
| ^~~~~~~~~~~~~~~~~~
kernel/module/main.c:2755:12: error: invalid storage class for function 'prepare_coming_module'
2755 | static int prepare_coming_module(struct module *mod)
| ^~~~~~~~~~~~~~~~~~~~~
kernel/module/main.c:2773:12: error: invalid storage class for function 'unknown_module_param_cb'
2773 | static int unknown_module_param_cb(char *param, char *val, const char *modname,
| ^~~~~~~~~~~~~~~~~~~~~~~
kernel/module/main.c:2793:12: error: invalid storage class for function 'early_mod_check'
2793 | static int early_mod_check(struct load_info *info, int flags)
| ^~~~~~~~~~~~~~~
kernel/module/main.c:2829:12: error: invalid storage class for function 'load_module'
2829 | static int load_module(struct load_info *info, const char __user *uargs,
| ^~~~~~~~~~~
In file included from include/linux/compiler_types.h:125,
from <command-line>:
>> include/linux/compiler-gcc.h:132:33: warning: 'alias' attribute ignored [-Wattributes]
132 | #define __diag(s) _Pragma(__diag_str(GCC diagnostic s))
| ^~~~~~~
include/linux/compiler-gcc.h:135:33: note: in expansion of macro '__diag'
135 | #define __diag_GCC_8(s) __diag(s)
| ^~~~~~
include/linux/compiler-gcc.h:123:9: note: in expansion of macro '__diag_GCC_8'
123 | __diag_GCC_ ## version(__diag_GCC_ ## severity s)
| ^~~~~~~~~~~
include/linux/compiler_types.h:416:9: note: in expansion of macro '__diag_GCC'
416 | __diag_ ## compiler(version, ignore, option)
| ^~~~~~~
include/linux/syscalls.h:242:9: note: in expansion of macro '__diag_ignore'
242 | __diag_ignore(GCC, 8, "-Wattribute-alias", \
| ^~~~~~~~~~~~~
include/linux/syscalls.h:230:9: note: in expansion of macro '__SYSCALL_DEFINEx'
230 | __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
| ^~~~~~~~~~~~~~~~~
include/linux/syscalls.h:221:36: note: in expansion of macro 'SYSCALL_DEFINEx'
221 | #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
kernel/module/main.c:3039:1: note: in expansion of macro 'SYSCALL_DEFINE3'
3039 | SYSCALL_DEFINE3(init_module, void __user *, umod,
| ^~~~~~~~~~~~~~~
In file included from kernel/module/main.c:26:
include/linux/syscalls.h:247:28: error: invalid storage class for function '__do_sys_init_module'
247 | static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
| ^~~~~~~~
include/linux/syscalls.h:230:9: note: in expansion of macro '__SYSCALL_DEFINEx'
230 | __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
| ^~~~~~~~~~~~~~~~~
include/linux/syscalls.h:221:36: note: in expansion of macro 'SYSCALL_DEFINEx'
221 | #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
kernel/module/main.c:3039:1: note: in expansion of macro 'SYSCALL_DEFINE3'
3039 | SYSCALL_DEFINE3(init_module, void __user *, umod,
| ^~~~~~~~~~~~~~~
include/linux/syscalls.h:249:25: error: static declaration of '__se_sys_init_module' follows non-static declaration
249 | asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
| ^~~~~~~~
include/linux/syscalls.h:230:9: note: in expansion of macro '__SYSCALL_DEFINEx'
230 | __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
| ^~~~~~~~~~~~~~~~~
include/linux/syscalls.h:221:36: note: in expansion of macro 'SYSCALL_DEFINEx'
221 | #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
kernel/module/main.c:3039:1: note: in expansion of macro 'SYSCALL_DEFINE3'
3039 | SYSCALL_DEFINE3(init_module, void __user *, umod,
| ^~~~~~~~~~~~~~~
include/linux/syscalls.h:248:25: note: previous declaration of '__se_sys_init_module' with type 'long int(long int, long int, long int)'
248 | asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \
| ^~~~~~~~
include/linux/syscalls.h:230:9: note: in expansion of macro '__SYSCALL_DEFINEx'
230 | __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
| ^~~~~~~~~~~~~~~~~
include/linux/syscalls.h:221:36: note: in expansion of macro 'SYSCALL_DEFINEx'
221 | #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
kernel/module/main.c:3039:1: note: in expansion of macro 'SYSCALL_DEFINE3'
3039 | SYSCALL_DEFINE3(init_module, void __user *, umod,
| ^~~~~~~~~~~~~~~
kernel/module/main.c: In function '__se_sys_init_module':
include/linux/syscalls.h:251:28: error: implicit declaration of function '__do_sys_init_module'; did you mean '__se_sys_init_module'? [-Werror=implicit-function-declaration]
251 | long ret = __do_sys##name(__MAP(x,__SC_CAST,__VA_ARGS__));\
| ^~~~~~~~
include/linux/syscalls.h:230:9: note: in expansion of macro '__SYSCALL_DEFINEx'
230 | __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
| ^~~~~~~~~~~~~~~~~
include/linux/syscalls.h:221:36: note: in expansion of macro 'SYSCALL_DEFINEx'
221 | #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
kernel/module/main.c:3039:1: note: in expansion of macro 'SYSCALL_DEFINE3'
3039 | SYSCALL_DEFINE3(init_module, void __user *, umod,
| ^~~~~~~~~~~~~~~
kernel/module/main.c: In function 'do_init_module':
include/linux/syscalls.h:257:28: error: invalid storage class for function '__do_sys_init_module'
257 | static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
| ^~~~~~~~
include/linux/syscalls.h:230:9: note: in expansion of macro '__SYSCALL_DEFINEx'
230 | __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
| ^~~~~~~~~~~~~~~~~
include/linux/syscalls.h:221:36: note: in expansion of macro 'SYSCALL_DEFINEx'
221 | #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
kernel/module/main.c:3039:1: note: in expansion of macro 'SYSCALL_DEFINE3'
3039 | SYSCALL_DEFINE3(init_module, void __user *, umod,
| ^~~~~~~~~~~~~~~
kernel/module/main.c:3073:13: error: invalid storage class for function 'idempotent'
3073 | static bool idempotent(struct idempotent *u, const void *cookie)
| ^~~~~~~~~~
kernel/module/main.c:3104:12: error: invalid storage class for function 'idempotent_complete'
3104 | static int idempotent_complete(struct idempotent *u, int ret)
| ^~~~~~~~~~~~~~~~~~~
kernel/module/main.c:3124:12: error: invalid storage class for function 'init_module_from_file'
3124 | static int init_module_from_file(struct file *f, const char __user * uargs, int flags)
| ^~~~~~~~~~~~~~~~~~~~~
kernel/module/main.c:3152:12: error: invalid storage class for function 'idempotent_init_module'
3152 | static int idempotent_init_module(struct file *f, const char __user * uargs, int flags)
| ^~~~~~~~~~~~~~~~~~~~~~
>> include/linux/compiler-gcc.h:132:33: warning: 'alias' attribute ignored [-Wattributes]
132 | #define __diag(s) _Pragma(__diag_str(GCC diagnostic s))
| ^~~~~~~
include/linux/compiler-gcc.h:135:33: note: in expansion of macro '__diag'
135 | #define __diag_GCC_8(s) __diag(s)
| ^~~~~~
include/linux/compiler-gcc.h:123:9: note: in expansion of macro '__diag_GCC_8'
123 | __diag_GCC_ ## version(__diag_GCC_ ## severity s)
| ^~~~~~~~~~~
include/linux/compiler_types.h:416:9: note: in expansion of macro '__diag_GCC'
416 | __diag_ ## compiler(version, ignore, option)
| ^~~~~~~
include/linux/syscalls.h:242:9: note: in expansion of macro '__diag_ignore'
242 | __diag_ignore(GCC, 8, "-Wattribute-alias", \
| ^~~~~~~~~~~~~
include/linux/syscalls.h:230:9: note: in expansion of macro '__SYSCALL_DEFINEx'
230 | __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
| ^~~~~~~~~~~~~~~~~
include/linux/syscalls.h:221:36: note: in expansion of macro 'SYSCALL_DEFINEx'
221 | #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
kernel/module/main.c:3170:1: note: in expansion of macro 'SYSCALL_DEFINE3'
3170 | SYSCALL_DEFINE3(finit_module, int, fd, const char __user *, uargs, int, flags)
| ^~~~~~~~~~~~~~~
include/linux/syscalls.h:247:28: error: invalid storage class for function '__do_sys_finit_module'
247 | static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
| ^~~~~~~~
include/linux/syscalls.h:230:9: note: in expansion of macro '__SYSCALL_DEFINEx'
230 | __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
| ^~~~~~~~~~~~~~~~~
include/linux/syscalls.h:221:36: note: in expansion of macro 'SYSCALL_DEFINEx'
221 | #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
kernel/module/main.c:3170:1: note: in expansion of macro 'SYSCALL_DEFINE3'
3170 | SYSCALL_DEFINE3(finit_module, int, fd, const char __user *, uargs, int, flags)
| ^~~~~~~~~~~~~~~
include/linux/syscalls.h:249:25: error: static declaration of '__se_sys_finit_module' follows non-static declaration
249 | asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
| ^~~~~~~~
include/linux/syscalls.h:230:9: note: in expansion of macro '__SYSCALL_DEFINEx'
230 | __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
| ^~~~~~~~~~~~~~~~~
include/linux/syscalls.h:221:36: note: in expansion of macro 'SYSCALL_DEFINEx'
221 | #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
kernel/module/main.c:3170:1: note: in expansion of macro 'SYSCALL_DEFINE3'
3170 | SYSCALL_DEFINE3(finit_module, int, fd, const char __user *, uargs, int, flags)
| ^~~~~~~~~~~~~~~
include/linux/syscalls.h:248:25: note: previous declaration of '__se_sys_finit_module' with type 'long int(long int, long int, long int)'
248 | asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \
| ^~~~~~~~
include/linux/syscalls.h:230:9: note: in expansion of macro '__SYSCALL_DEFINEx'
230 | __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
| ^~~~~~~~~~~~~~~~~
include/linux/syscalls.h:221:36: note: in expansion of macro 'SYSCALL_DEFINEx'
221 | #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
kernel/module/main.c:3170:1: note: in expansion of macro 'SYSCALL_DEFINE3'
3170 | SYSCALL_DEFINE3(finit_module, int, fd, const char __user *, uargs, int, flags)
| ^~~~~~~~~~~~~~~
kernel/module/main.c: In function '__se_sys_finit_module':
include/linux/syscalls.h:251:28: error: implicit declaration of function '__do_sys_finit_module'; did you mean '__do_sys_init_module'? [-Werror=implicit-function-declaration]
251 | long ret = __do_sys##name(__MAP(x,__SC_CAST,__VA_ARGS__));\
| ^~~~~~~~
include/linux/syscalls.h:230:9: note: in expansion of macro '__SYSCALL_DEFINEx'
230 | __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
| ^~~~~~~~~~~~~~~~~
include/linux/syscalls.h:221:36: note: in expansion of macro 'SYSCALL_DEFINEx'
221 | #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
kernel/module/main.c:3170:1: note: in expansion of macro 'SYSCALL_DEFINE3'
3170 | SYSCALL_DEFINE3(finit_module, int, fd, const char __user *, uargs, int, flags)
| ^~~~~~~~~~~~~~~
kernel/module/main.c: In function 'do_init_module':
include/linux/syscalls.h:257:28: error: invalid storage class for function '__do_sys_finit_module'
257 | static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
| ^~~~~~~~
include/linux/syscalls.h:230:9: note: in expansion of macro '__SYSCALL_DEFINEx'
230 | __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
| ^~~~~~~~~~~~~~~~~
include/linux/syscalls.h:221:36: note: in expansion of macro 'SYSCALL_DEFINEx'
221 | #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
kernel/module/main.c:3170:1: note: in expansion of macro 'SYSCALL_DEFINE3'
3170 | SYSCALL_DEFINE3(finit_module, int, fd, const char __user *, uargs, int, flags)
| ^~~~~~~~~~~~~~~
kernel/module/main.c:3361:12: error: invalid storage class for function 'module_debugfs_init'
3361 | static int module_debugfs_init(void)
| ^~~~~~~~~~~~~~~~~~~
In file included from include/linux/printk.h:6,
from include/asm-generic/bug.h:22,
from arch/m68k/include/asm/bug.h:32,
from include/linux/bug.h:5,
from include/linux/thread_info.h:13,
from include/asm-generic/preempt.h:5,
from ./arch/m68k/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:79,
from arch/m68k/include/asm/irqflags.h:6,
from include/linux/irqflags.h:17,
from arch/m68k/include/asm/atomic.h:6,
from include/linux/atomic.h:7,
from include/linux/mm_types_task.h:13,
from include/linux/mm_types.h:5,
from include/linux/buildid.h:5,
from include/linux/module.h:14,
from include/linux/moduleloader.h:6,
from kernel/module/main.c:12:
kernel/module/main.c:3366:13: error: initializer element is not constant
3366 | module_init(module_debugfs_init);
| ^~~~~~~~~~~~~~~~~~~
include/linux/init.h:270:55: note: in definition of macro '____define_initcall'
270 | __attribute__((__section__(__sec))) = fn;
| ^~
include/linux/init.h:280:9: note: in expansion of macro '__unique_initcall'
280 | __unique_initcall(fn, id, __sec, __initcall_id(fn))
| ^~~~~~~~~~~~~~~~~
include/linux/init.h:282:35: note: in expansion of macro '___define_initcall'
282 | #define __define_initcall(fn, id) ___define_initcall(fn, id, .initcall##id)
| ^~~~~~~~~~~~~~~~~~
include/linux/init.h:311:41: note: in expansion of macro '__define_initcall'
311 | #define device_initcall(fn) __define_initcall(fn, 6)
| ^~~~~~~~~~~~~~~~~
include/linux/init.h:316:24: note: in expansion of macro 'device_initcall'
316 | #define __initcall(fn) device_initcall(fn)
| ^~~~~~~~~~~~~~~
include/linux/module.h:88:25: note: in expansion of macro '__initcall'
88 | #define module_init(x) __initcall(x);
| ^~~~~~~~~~
kernel/module/main.c:3366:1: note: in expansion of macro 'module_init'
3366 | module_init(module_debugfs_init);
| ^~~~~~~~~~~
kernel/module/main.c:3366:1: error: expected declaration or statement at end of input
>> kernel/module/main.c:3359:16: warning: variable 'mod_debugfs_root' set but not used [-Wunused-but-set-variable]
3359 | struct dentry *mod_debugfs_root;
| ^~~~~~~~~~~~~~~~
kernel/module/main.c: At top level:
>> kernel/module/main.c:3336:6: warning: 'print_modules' defined but not used [-Wunused-function]
3336 | void print_modules(void)
| ^~~~~~~~~~~~~
>> kernel/module/main.c:3323:16: warning: '__module_text_address' defined but not used [-Wunused-function]
3323 | struct module *__module_text_address(unsigned long addr)
| ^~~~~~~~~~~~~~~~~~~~~
>> kernel/module/main.c:3305:6: warning: 'is_module_text_address' defined but not used [-Wunused-function]
3305 | bool is_module_text_address(unsigned long addr)
| ^~~~~~~~~~~~~~~~~~~~~~
>> kernel/module/main.c:3253:6: warning: 'is_module_address' defined but not used [-Wunused-function]
3253 | bool is_module_address(unsigned long addr)
| ^~~~~~~~~~~~~~~~~
>> kernel/module/main.c:3220:37: warning: 'search_module_extables' defined but not used [-Wunused-function]
3220 | const struct exception_table_entry *search_module_extables(unsigned long addr)
| ^~~~~~~~~~~~~~~~~~~~~~
>> include/linux/syscalls.h:249:25: warning: '__se_sys_finit_module' defined but not used [-Wunused-function]
249 | asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
| ^~~~~~~~
include/linux/syscalls.h:230:9: note: in expansion of macro '__SYSCALL_DEFINEx'
230 | __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
| ^~~~~~~~~~~~~~~~~
include/linux/syscalls.h:221:36: note: in expansion of macro 'SYSCALL_DEFINEx'
221 | #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
kernel/module/main.c:3170:1: note: in expansion of macro 'SYSCALL_DEFINE3'
3170 | SYSCALL_DEFINE3(finit_module, int, fd, const char __user *, uargs, int, flags)
| ^~~~~~~~~~~~~~~
>> include/linux/syscalls.h:249:25: warning: '__se_sys_init_module' defined but not used [-Wunused-function]
249 | asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
| ^~~~~~~~
include/linux/syscalls.h:230:9: note: in expansion of macro '__SYSCALL_DEFINEx'
230 | __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
| ^~~~~~~~~~~~~~~~~
include/linux/syscalls.h:221:36: note: in expansion of macro 'SYSCALL_DEFINEx'
221 | #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
kernel/module/main.c:3039:1: note: in expansion of macro 'SYSCALL_DEFINE3'
3039 | SYSCALL_DEFINE3(init_module, void __user *, umod,
| ^~~~~~~~~~~~~~~
cc1: some warnings being treated as errors

vim +/mod_debugfs_root +3359 kernel/module/main.c

fa3ba2e81ea23416 kernel/module.c Florin Malita 2006-10-11 3218
^1da177e4c3f4152 kernel/module.c Linus Torvalds 2005-04-16 3219 /* Given an address, look for it in the module exception tables. */
^1da177e4c3f4152 kernel/module.c Linus Torvalds 2005-04-16 @3220 const struct exception_table_entry *search_module_extables(unsigned long addr)
^1da177e4c3f4152 kernel/module.c Linus Torvalds 2005-04-16 3221 {
^1da177e4c3f4152 kernel/module.c Linus Torvalds 2005-04-16 3222 const struct exception_table_entry *e = NULL;
^1da177e4c3f4152 kernel/module.c Linus Torvalds 2005-04-16 3223 struct module *mod;
^1da177e4c3f4152 kernel/module.c Linus Torvalds 2005-04-16 3224
24da1cbff9cfce50 kernel/module.c Rusty Russell 2007-07-15 3225 preempt_disable();
5ff22646d246e23b kernel/module.c Peter Zijlstra 2017-02-08 3226 mod = __module_address(addr);
5ff22646d246e23b kernel/module.c Peter Zijlstra 2017-02-08 3227 if (!mod)
5ff22646d246e23b kernel/module.c Peter Zijlstra 2017-02-08 3228 goto out;
5ff22646d246e23b kernel/module.c Peter Zijlstra 2017-02-08 3229
5ff22646d246e23b kernel/module.c Peter Zijlstra 2017-02-08 3230 if (!mod->num_exentries)
5ff22646d246e23b kernel/module.c Peter Zijlstra 2017-02-08 3231 goto out;
^1da177e4c3f4152 kernel/module.c Linus Torvalds 2005-04-16 3232
^1da177e4c3f4152 kernel/module.c Linus Torvalds 2005-04-16 3233 e = search_extable(mod->extable,
a94c33dd1f677d16 kernel/module.c Thomas Meyer 2017-07-10 3234 mod->num_exentries,
^1da177e4c3f4152 kernel/module.c Linus Torvalds 2005-04-16 3235 addr);
5ff22646d246e23b kernel/module.c Peter Zijlstra 2017-02-08 3236 out:
24da1cbff9cfce50 kernel/module.c Rusty Russell 2007-07-15 3237 preempt_enable();
^1da177e4c3f4152 kernel/module.c Linus Torvalds 2005-04-16 3238
5ff22646d246e23b kernel/module.c Peter Zijlstra 2017-02-08 3239 /*
5ff22646d246e23b kernel/module.c Peter Zijlstra 2017-02-08 3240 * Now, if we found one, we are running inside it now, hence
5ff22646d246e23b kernel/module.c Peter Zijlstra 2017-02-08 3241 * we cannot unload the module, hence no refcnt needed.
5ff22646d246e23b kernel/module.c Peter Zijlstra 2017-02-08 3242 */
^1da177e4c3f4152 kernel/module.c Linus Torvalds 2005-04-16 3243 return e;
^1da177e4c3f4152 kernel/module.c Linus Torvalds 2005-04-16 3244 }
^1da177e4c3f4152 kernel/module.c Linus Torvalds 2005-04-16 3245
2541743e99c301f9 kernel/module.c Sergey Shtylyov 2020-11-04 3246 /**
2541743e99c301f9 kernel/module.c Sergey Shtylyov 2020-11-04 3247 * is_module_address() - is this address inside a module?
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3248 * @addr: the address to check.
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3249 *
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3250 * See is_module_text_address() if you simply want to see if the address
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3251 * is code (not data).
4d435f9d8ff01ae7 kernel/module.c Ingo Molnar 2006-07-03 3252 */
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 @3253 bool is_module_address(unsigned long addr)
4d435f9d8ff01ae7 kernel/module.c Ingo Molnar 2006-07-03 3254 {
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3255 bool ret;
4d435f9d8ff01ae7 kernel/module.c Ingo Molnar 2006-07-03 3256
24da1cbff9cfce50 kernel/module.c Rusty Russell 2007-07-15 3257 preempt_disable();
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3258 ret = __module_address(addr) != NULL;
24da1cbff9cfce50 kernel/module.c Rusty Russell 2007-07-15 3259 preempt_enable();
4d435f9d8ff01ae7 kernel/module.c Ingo Molnar 2006-07-03 3260
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3261 return ret;
4d435f9d8ff01ae7 kernel/module.c Ingo Molnar 2006-07-03 3262 }
4d435f9d8ff01ae7 kernel/module.c Ingo Molnar 2006-07-03 3263
2541743e99c301f9 kernel/module.c Sergey Shtylyov 2020-11-04 3264 /**
2541743e99c301f9 kernel/module.c Sergey Shtylyov 2020-11-04 3265 * __module_address() - get the module which contains an address.
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3266 * @addr: the address.
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3267 *
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3268 * Must be called with preempt disabled or module mutex held so that
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3269 * module doesn't get freed during this.
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3270 */
714f83d5d9f7c785 kernel/module.c Linus Torvalds 2009-04-05 3271 struct module *__module_address(unsigned long addr)
^1da177e4c3f4152 kernel/module.c Linus Torvalds 2005-04-16 3272 {
^1da177e4c3f4152 kernel/module.c Linus Torvalds 2005-04-16 3273 struct module *mod;
^1da177e4c3f4152 kernel/module.c Linus Torvalds 2005-04-16 3274
01dc0386efb76905 kernel/module/main.c Christophe Leroy 2022-02-23 3275 if (addr >= mod_tree.addr_min && addr <= mod_tree.addr_max)
ac3b432839234409 kernel/module/main.c Song Liu 2023-02-06 3276 goto lookup;
ac3b432839234409 kernel/module/main.c Song Liu 2023-02-06 3277
01dc0386efb76905 kernel/module/main.c Christophe Leroy 2022-02-23 3278 #ifdef CONFIG_ARCH_WANTS_MODULES_DATA_IN_VMALLOC
ac3b432839234409 kernel/module/main.c Song Liu 2023-02-06 3279 if (addr >= mod_tree.data_addr_min && addr <= mod_tree.data_addr_max)
ac3b432839234409 kernel/module/main.c Song Liu 2023-02-06 3280 goto lookup;
01dc0386efb76905 kernel/module/main.c Christophe Leroy 2022-02-23 3281 #endif
ac3b432839234409 kernel/module/main.c Song Liu 2023-02-06 3282
3a642e99babe0617 kernel/module.c Rusty Russell 2008-07-22 3283 return NULL;
3a642e99babe0617 kernel/module.c Rusty Russell 2008-07-22 3284
ac3b432839234409 kernel/module/main.c Song Liu 2023-02-06 3285 lookup:
0be964be0d450842 kernel/module.c Peter Zijlstra 2015-05-27 3286 module_assert_mutex_or_preempt();
0be964be0d450842 kernel/module.c Peter Zijlstra 2015-05-27 3287
ac3b432839234409 kernel/module/main.c Song Liu 2023-02-06 3288 mod = mod_find(addr, &mod_tree);
93c2e105f6bcee23 kernel/module.c Peter Zijlstra 2015-05-27 3289 if (mod) {
93c2e105f6bcee23 kernel/module.c Peter Zijlstra 2015-05-27 3290 BUG_ON(!within_module(addr, mod));
0d21b0e3477395e7 kernel/module.c Rusty Russell 2013-01-12 3291 if (mod->state == MODULE_STATE_UNFORMED)
93c2e105f6bcee23 kernel/module.c Peter Zijlstra 2015-05-27 3292 mod = NULL;
0d21b0e3477395e7 kernel/module.c Rusty Russell 2013-01-12 3293 }
93c2e105f6bcee23 kernel/module.c Peter Zijlstra 2015-05-27 3294 return mod;
^1da177e4c3f4152 kernel/module.c Linus Torvalds 2005-04-16 3295 }
^1da177e4c3f4152 kernel/module.c Linus Torvalds 2005-04-16 3296
2541743e99c301f9 kernel/module.c Sergey Shtylyov 2020-11-04 3297 /**
2541743e99c301f9 kernel/module.c Sergey Shtylyov 2020-11-04 3298 * is_module_text_address() - is this address inside module code?
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3299 * @addr: the address to check.
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3300 *
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3301 * See is_module_address() if you simply want to see if the address is
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3302 * anywhere in a module. See kernel_text_address() for testing if an
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3303 * address corresponds to kernel or module code.
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3304 */
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 @3305 bool is_module_text_address(unsigned long addr)
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3306 {
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3307 bool ret;
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3308
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3309 preempt_disable();
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3310 ret = __module_text_address(addr) != NULL;
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3311 preempt_enable();
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3312
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3313 return ret;
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3314 }
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3315
2541743e99c301f9 kernel/module.c Sergey Shtylyov 2020-11-04 3316 /**
2541743e99c301f9 kernel/module.c Sergey Shtylyov 2020-11-04 3317 * __module_text_address() - get the module whose code contains an address.
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3318 * @addr: the address.
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3319 *
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3320 * Must be called with preempt disabled or module mutex held so that
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3321 * module doesn't get freed during this.
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3322 */
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 @3323 struct module *__module_text_address(unsigned long addr)
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3324 {
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3325 struct module *mod = __module_address(addr);
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3326 if (mod) {
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3327 /* Make sure it's within the text section. */
ac3b432839234409 kernel/module/main.c Song Liu 2023-02-06 3328 if (!within_module_mem_type(addr, mod, MOD_TEXT) &&
ac3b432839234409 kernel/module/main.c Song Liu 2023-02-06 3329 !within_module_mem_type(addr, mod, MOD_INIT_TEXT))
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3330 mod = NULL;
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3331 }
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3332 return mod;
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3333 }
e610499e2656e619 kernel/module.c Rusty Russell 2009-03-31 3334
^1da177e4c3f4152 kernel/module.c Linus Torvalds 2005-04-16 3335 /* Don't grab lock, we're oopsing. */
^1da177e4c3f4152 kernel/module.c Linus Torvalds 2005-04-16 @3336 void print_modules(void)
^1da177e4c3f4152 kernel/module.c Linus Torvalds 2005-04-16 3337 {
^1da177e4c3f4152 kernel/module.c Linus Torvalds 2005-04-16 3338 struct module *mod;
7fd8329ba502ef76 kernel/module.c Petr Mladek 2016-09-21 3339 char buf[MODULE_FLAGS_BUF_SIZE];
^1da177e4c3f4152 kernel/module.c Linus Torvalds 2005-04-16 3340
b231125af7811a2f kernel/module.c Linus Torvalds 2009-06-16 3341 printk(KERN_DEFAULT "Modules linked in:");
d72b37513cdfbd3f kernel/module.c Andi Kleen 2008-08-30 3342 /* Most callers should already have preempt disabled, but make sure */
d72b37513cdfbd3f kernel/module.c Andi Kleen 2008-08-30 3343 preempt_disable();
0d21b0e3477395e7 kernel/module.c Rusty Russell 2013-01-12 3344 list_for_each_entry_rcu(mod, &modules, list) {
0d21b0e3477395e7 kernel/module.c Rusty Russell 2013-01-12 3345 if (mod->state == MODULE_STATE_UNFORMED)
0d21b0e3477395e7 kernel/module.c Rusty Russell 2013-01-12 3346 continue;
17dd25c29cda98c3 kernel/module/main.c Aaron Tomlin 2022-07-14 3347 pr_cont(" %s%s", mod->name, module_flags(mod, buf, true));
0d21b0e3477395e7 kernel/module.c Rusty Russell 2013-01-12 3348 }
99bd9956551b27cb kernel/module/main.c Aaron Tomlin 2022-05-02 3349
99bd9956551b27cb kernel/module/main.c Aaron Tomlin 2022-05-02 3350 print_unloaded_tainted_modules();
d72b37513cdfbd3f kernel/module.c Andi Kleen 2008-08-30 3351 preempt_enable();
6f1dae1d84b6d085 kernel/module/main.c Aaron Tomlin 2022-07-14 3352 if (last_unloaded_module.name[0])
6f1dae1d84b6d085 kernel/module/main.c Aaron Tomlin 2022-07-14 3353 pr_cont(" [last unloaded: %s%s]", last_unloaded_module.name,
6f1dae1d84b6d085 kernel/module/main.c Aaron Tomlin 2022-07-14 3354 last_unloaded_module.taints);
27bba4d6bb3779a6 kernel/module.c Jiri Slaby 2014-02-03 3355 pr_cont("\n");
^1da177e4c3f4152 kernel/module.c Linus Torvalds 2005-04-16 3356 }
df3e764d8e5cd416 kernel/module/main.c Luis Chamberlain 2023-03-28 3357
df3e764d8e5cd416 kernel/module/main.c Luis Chamberlain 2023-03-28 3358 #ifdef CONFIG_MODULE_DEBUGFS
df3e764d8e5cd416 kernel/module/main.c Luis Chamberlain 2023-03-28 @3359 struct dentry *mod_debugfs_root;
df3e764d8e5cd416 kernel/module/main.c Luis Chamberlain 2023-03-28 3360
df3e764d8e5cd416 kernel/module/main.c Luis Chamberlain 2023-03-28 3361 static int module_debugfs_init(void)
df3e764d8e5cd416 kernel/module/main.c Luis Chamberlain 2023-03-28 3362 {
df3e764d8e5cd416 kernel/module/main.c Luis Chamberlain 2023-03-28 3363 mod_debugfs_root = debugfs_create_dir("modules", NULL);
df3e764d8e5cd416 kernel/module/main.c Luis Chamberlain 2023-03-28 3364 return 0;
df3e764d8e5cd416 kernel/module/main.c Luis Chamberlain 2023-03-28 3365 }
df3e764d8e5cd416 kernel/module/main.c Luis Chamberlain 2023-03-28 @3366 module_init(module_debugfs_init);

--
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