mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-01-11 09:00:12 +00:00
37ade54f38
The TAINT_RANDSTRUCT and TAINT_FWCTL flags are mistakenly set in the
taint_flags table as per-module flags. While this can be trivially
corrected, the issue can be avoided altogether by removing the
taint_flag.module field.
This is possible because, since commit 7fd8329ba502 ("taint/module: Clean
up global and module taint flags handling") in 2016, the handling of
module taint flags has been fully generic. Specifically,
module_flags_taint() can print all flags, and the required output buffer
size is properly defined in terms of TAINT_FLAGS_COUNT. The actual
per-module flags are always those added to module.taints by calls to
add_taint_module().
Link: https://lkml.kernel.org/r/20251022082938.26670-1-petr.pavlu@suse.com
Signed-off-by: Petr Pavlu <petr.pavlu@suse.com>
Acked-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Aaron Tomlin <atomlin@atomlin.com>
Cc: Luis Chamberalin <mcgrof@kernel.org>
Cc: Petr Pavlu <petr.pavlu@suse.com>
Cc: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
106 lines
2.9 KiB
C
106 lines
2.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _LINUX_PANIC_H
|
|
#define _LINUX_PANIC_H
|
|
|
|
#include <linux/compiler_attributes.h>
|
|
#include <linux/stdarg.h>
|
|
#include <linux/types.h>
|
|
|
|
struct pt_regs;
|
|
|
|
extern long (*panic_blink)(int state);
|
|
__printf(1, 2)
|
|
void panic(const char *fmt, ...) __noreturn __cold;
|
|
__printf(1, 0)
|
|
void vpanic(const char *fmt, va_list args) __noreturn __cold;
|
|
void nmi_panic(struct pt_regs *regs, const char *msg);
|
|
void check_panic_on_warn(const char *origin);
|
|
extern void oops_enter(void);
|
|
extern void oops_exit(void);
|
|
extern bool oops_may_print(void);
|
|
|
|
extern bool panic_triggering_all_cpu_backtrace;
|
|
extern int panic_timeout;
|
|
extern unsigned long panic_print;
|
|
extern int panic_on_oops;
|
|
extern int panic_on_warn;
|
|
|
|
extern unsigned long panic_on_taint;
|
|
extern bool panic_on_taint_nousertaint;
|
|
|
|
extern int sysctl_panic_on_stackoverflow;
|
|
|
|
extern bool crash_kexec_post_notifiers;
|
|
|
|
extern void __stack_chk_fail(void);
|
|
void abort(void);
|
|
|
|
/*
|
|
* panic_cpu is used for synchronizing panic() and crash_kexec() execution. It
|
|
* holds a CPU number which is executing panic() currently. A value of
|
|
* PANIC_CPU_INVALID means no CPU has entered panic() or crash_kexec().
|
|
*/
|
|
extern atomic_t panic_cpu;
|
|
#define PANIC_CPU_INVALID -1
|
|
|
|
bool panic_try_start(void);
|
|
void panic_reset(void);
|
|
bool panic_in_progress(void);
|
|
bool panic_on_this_cpu(void);
|
|
bool panic_on_other_cpu(void);
|
|
|
|
/*
|
|
* Only to be used by arch init code. If the user over-wrote the default
|
|
* CONFIG_PANIC_TIMEOUT, honor it.
|
|
*/
|
|
static inline void set_arch_panic_timeout(int timeout, int arch_default_timeout)
|
|
{
|
|
if (panic_timeout == arch_default_timeout)
|
|
panic_timeout = timeout;
|
|
}
|
|
|
|
/* This cannot be an enum because some may be used in assembly source. */
|
|
#define TAINT_PROPRIETARY_MODULE 0
|
|
#define TAINT_FORCED_MODULE 1
|
|
#define TAINT_CPU_OUT_OF_SPEC 2
|
|
#define TAINT_FORCED_RMMOD 3
|
|
#define TAINT_MACHINE_CHECK 4
|
|
#define TAINT_BAD_PAGE 5
|
|
#define TAINT_USER 6
|
|
#define TAINT_DIE 7
|
|
#define TAINT_OVERRIDDEN_ACPI_TABLE 8
|
|
#define TAINT_WARN 9
|
|
#define TAINT_CRAP 10
|
|
#define TAINT_FIRMWARE_WORKAROUND 11
|
|
#define TAINT_OOT_MODULE 12
|
|
#define TAINT_UNSIGNED_MODULE 13
|
|
#define TAINT_SOFTLOCKUP 14
|
|
#define TAINT_LIVEPATCH 15
|
|
#define TAINT_AUX 16
|
|
#define TAINT_RANDSTRUCT 17
|
|
#define TAINT_TEST 18
|
|
#define TAINT_FWCTL 19
|
|
#define TAINT_FLAGS_COUNT 20
|
|
#define TAINT_FLAGS_MAX ((1UL << TAINT_FLAGS_COUNT) - 1)
|
|
|
|
struct taint_flag {
|
|
char c_true; /* character printed when tainted */
|
|
char c_false; /* character printed when not tainted */
|
|
const char *desc; /* verbose description of the set taint flag */
|
|
};
|
|
|
|
extern const struct taint_flag taint_flags[TAINT_FLAGS_COUNT];
|
|
|
|
enum lockdep_ok {
|
|
LOCKDEP_STILL_OK,
|
|
LOCKDEP_NOW_UNRELIABLE,
|
|
};
|
|
|
|
extern const char *print_tainted(void);
|
|
extern const char *print_tainted_verbose(void);
|
|
extern void add_taint(unsigned flag, enum lockdep_ok);
|
|
extern int test_taint(unsigned flag);
|
|
extern unsigned long get_taint(void);
|
|
|
|
#endif /* _LINUX_PANIC_H */
|