Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _LINUX_PANIC_H
3#define _LINUX_PANIC_H
4
5#include <linux/compiler_attributes.h>
6#include <linux/types.h>
7
8struct pt_regs;
9
10extern long (*panic_blink)(int state);
11__printf(1, 2)
12void panic(const char *fmt, ...) __noreturn __cold;
13void nmi_panic(struct pt_regs *regs, const char *msg);
14void check_panic_on_warn(const char *origin);
15extern void oops_enter(void);
16extern void oops_exit(void);
17extern bool oops_may_print(void);
18
19extern bool panic_triggering_all_cpu_backtrace;
20extern int panic_timeout;
21extern unsigned long panic_print;
22extern int panic_on_oops;
23extern int panic_on_warn;
24
25extern unsigned long panic_on_taint;
26extern bool panic_on_taint_nousertaint;
27
28extern int sysctl_panic_on_rcu_stall;
29extern int sysctl_max_rcu_stall_to_panic;
30extern int sysctl_panic_on_stackoverflow;
31
32extern bool crash_kexec_post_notifiers;
33
34extern void __stack_chk_fail(void);
35void abort(void);
36
37/*
38 * panic_cpu is used for synchronizing panic() and crash_kexec() execution. It
39 * holds a CPU number which is executing panic() currently. A value of
40 * PANIC_CPU_INVALID means no CPU has entered panic() or crash_kexec().
41 */
42extern atomic_t panic_cpu;
43#define PANIC_CPU_INVALID -1
44
45/*
46 * Only to be used by arch init code. If the user over-wrote the default
47 * CONFIG_PANIC_TIMEOUT, honor it.
48 */
49static inline void set_arch_panic_timeout(int timeout, int arch_default_timeout)
50{
51 if (panic_timeout == arch_default_timeout)
52 panic_timeout = timeout;
53}
54
55/* This cannot be an enum because some may be used in assembly source. */
56#define TAINT_PROPRIETARY_MODULE 0
57#define TAINT_FORCED_MODULE 1
58#define TAINT_CPU_OUT_OF_SPEC 2
59#define TAINT_FORCED_RMMOD 3
60#define TAINT_MACHINE_CHECK 4
61#define TAINT_BAD_PAGE 5
62#define TAINT_USER 6
63#define TAINT_DIE 7
64#define TAINT_OVERRIDDEN_ACPI_TABLE 8
65#define TAINT_WARN 9
66#define TAINT_CRAP 10
67#define TAINT_FIRMWARE_WORKAROUND 11
68#define TAINT_OOT_MODULE 12
69#define TAINT_UNSIGNED_MODULE 13
70#define TAINT_SOFTLOCKUP 14
71#define TAINT_LIVEPATCH 15
72#define TAINT_AUX 16
73#define TAINT_RANDSTRUCT 17
74#define TAINT_TEST 18
75#define TAINT_FWCTL 19
76#define TAINT_FLAGS_COUNT 20
77#define TAINT_FLAGS_MAX ((1UL << TAINT_FLAGS_COUNT) - 1)
78
79struct taint_flag {
80 char c_true; /* character printed when tainted */
81 char c_false; /* character printed when not tainted */
82 bool module; /* also show as a per-module taint flag */
83 const char *desc; /* verbose description of the set taint flag */
84};
85
86extern const struct taint_flag taint_flags[TAINT_FLAGS_COUNT];
87
88enum lockdep_ok {
89 LOCKDEP_STILL_OK,
90 LOCKDEP_NOW_UNRELIABLE,
91};
92
93extern const char *print_tainted(void);
94extern const char *print_tainted_verbose(void);
95extern void add_taint(unsigned flag, enum lockdep_ok);
96extern int test_taint(unsigned flag);
97extern unsigned long get_taint(void);
98
99#endif /* _LINUX_PANIC_H */