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module: pull out add_taint_module() to be public

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Other kernel code might want to call add_taint_module() so pull it out
and make it global.  If modules are not enabled, this defaults to a call
to add_taint(), so all is fine.

Reviewed-by: Johan Hovold <johan@kernel.org>
Tested-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Bradley Morgan <brads@mainlining.org>
Reviewed-by: Petr Pavlu <petr.pavlu@suse.com>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260914-bind_taint-v4-1-eadf8a090903@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2026-09-14 16:30:31 +02:00
parent ae324a7192
commit 10dde2bd66
2 changed files with 23 additions and 3 deletions
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10
include/linux/module.h
View File

@ -29,6 +29,7 @@
#include <linux/srcu.h>
#include <linux/static_call_types.h>
#include <linux/dynamic_debug.h>
#include <linux/panic.h>
#include <linux/percpu.h>
#include <asm/module.h>
@ -770,6 +771,9 @@ static inline bool is_livepatch_module(struct module *mod)
void module_for_each_mod(int(*func)(struct module *mod, void *data), void *data);
void add_taint_module(struct module *mod, unsigned flag,
enum lockdep_ok lockdep_ok);
#else /* !CONFIG_MODULES... */
static inline struct module *__module_address(unsigned long addr)
@ -877,6 +881,12 @@ static inline bool module_is_coming(struct module *mod)
static inline void module_for_each_mod(int(*func)(struct module *mod, void *data), void *data)
{
}
static inline void add_taint_module(struct module *mod, unsigned flag,
enum lockdep_ok lockdep_ok)
{
add_taint(flag, lockdep_ok);
}
#endif /* CONFIG_MODULES */
#ifdef CONFIG_SYSFS

16
kernel/module/main.c
View File

@ -191,11 +191,21 @@ static inline int strong_try_module_get(struct module *mod)
return -ENOENT;
}
static inline void add_taint_module(struct module *mod, unsigned flag,
enum lockdep_ok lockdep_ok)
/**
* add_taint_module: add a taint flag if not already set for a specific module
* @mod: pointer to the module that caused the problem
* @flag: one of the TAINT_* constants.
* @lockdep_ok: whether lock debugging is still OK.
*
* If something bad has gone wrong, you'll want @lockdebug_ok = false, but for
* some noteworthy-but-not-corrupting cases, it can be set to true.
*/
void add_taint_module(struct module *mod, unsigned flag,
enum lockdep_ok lockdep_ok)
{
add_taint(flag, lockdep_ok);
set_bit(flag, &mod->taints);
if (mod)
set_bit(flag, &mod->taints);
}
/*