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