| 1 | /* SPDX-License-Identifier: GPL-2.0 */ | 
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| 2 | #ifndef _LINUX_PANIC_H | 
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| 3 | #define _LINUX_PANIC_H | 
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| 4 |  | 
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| 5 | #include <linux/compiler_attributes.h> | 
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| 6 | #include <linux/stdarg.h> | 
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| 7 | #include <linux/types.h> | 
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| 8 |  | 
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| 9 | struct pt_regs; | 
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| 10 |  | 
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| 11 | extern long (*panic_blink)(int state); | 
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| 12 | __printf(1, 2) | 
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| 13 | void panic(const char *fmt, ...) __noreturn __cold; | 
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| 14 | __printf(1, 0) | 
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| 15 | void vpanic(const char *fmt, va_list args) __noreturn __cold; | 
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| 16 | void nmi_panic(struct pt_regs *regs, const char *msg); | 
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| 17 | void check_panic_on_warn(const char *origin); | 
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| 18 | extern void oops_enter(void); | 
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| 19 | extern void oops_exit(void); | 
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| 20 | extern bool oops_may_print(void); | 
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| 21 |  | 
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| 22 | extern bool panic_triggering_all_cpu_backtrace; | 
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| 23 | extern int panic_timeout; | 
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| 24 | extern unsigned long panic_print; | 
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| 25 | extern int panic_on_oops; | 
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| 26 | extern int panic_on_warn; | 
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| 27 |  | 
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| 28 | extern unsigned long panic_on_taint; | 
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| 29 | extern bool panic_on_taint_nousertaint; | 
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| 30 |  | 
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| 31 | extern int sysctl_panic_on_stackoverflow; | 
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| 32 |  | 
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| 33 | extern bool crash_kexec_post_notifiers; | 
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| 34 |  | 
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| 35 | extern void __stack_chk_fail(void); | 
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| 36 | void abort(void); | 
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| 37 |  | 
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| 38 | /* | 
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| 39 | * panic_cpu is used for synchronizing panic() and crash_kexec() execution. It | 
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| 40 | * holds a CPU number which is executing panic() currently. A value of | 
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| 41 | * PANIC_CPU_INVALID means no CPU has entered panic() or crash_kexec(). | 
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| 42 | */ | 
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| 43 | extern atomic_t panic_cpu; | 
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| 44 | #define PANIC_CPU_INVALID	-1 | 
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| 45 |  | 
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| 46 | bool panic_try_start(void); | 
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| 47 | void panic_reset(void); | 
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| 48 | bool panic_in_progress(void); | 
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| 49 | bool panic_on_this_cpu(void); | 
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| 50 | bool panic_on_other_cpu(void); | 
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| 51 |  | 
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| 52 | /* | 
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| 53 | * Only to be used by arch init code. If the user over-wrote the default | 
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| 54 | * CONFIG_PANIC_TIMEOUT, honor it. | 
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| 55 | */ | 
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| 56 | static inline void set_arch_panic_timeout(int timeout, int arch_default_timeout) | 
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| 57 | { | 
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| 58 | if (panic_timeout == arch_default_timeout) | 
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| 59 | panic_timeout = timeout; | 
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| 60 | } | 
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| 61 |  | 
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| 62 | /* This cannot be an enum because some may be used in assembly source. */ | 
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| 63 | #define TAINT_PROPRIETARY_MODULE	0 | 
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| 64 | #define TAINT_FORCED_MODULE		1 | 
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| 65 | #define TAINT_CPU_OUT_OF_SPEC		2 | 
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| 66 | #define TAINT_FORCED_RMMOD		3 | 
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| 67 | #define TAINT_MACHINE_CHECK		4 | 
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| 68 | #define TAINT_BAD_PAGE			5 | 
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| 69 | #define TAINT_USER			6 | 
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| 70 | #define TAINT_DIE			7 | 
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| 71 | #define TAINT_OVERRIDDEN_ACPI_TABLE	8 | 
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| 72 | #define TAINT_WARN			9 | 
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| 73 | #define TAINT_CRAP			10 | 
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| 74 | #define TAINT_FIRMWARE_WORKAROUND	11 | 
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| 75 | #define TAINT_OOT_MODULE		12 | 
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| 76 | #define TAINT_UNSIGNED_MODULE		13 | 
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| 77 | #define TAINT_SOFTLOCKUP		14 | 
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| 78 | #define TAINT_LIVEPATCH			15 | 
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| 79 | #define TAINT_AUX			16 | 
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| 80 | #define TAINT_RANDSTRUCT		17 | 
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| 81 | #define TAINT_TEST			18 | 
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| 82 | #define TAINT_FWCTL			19 | 
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| 83 | #define TAINT_FLAGS_COUNT		20 | 
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| 84 | #define TAINT_FLAGS_MAX			((1UL << TAINT_FLAGS_COUNT) - 1) | 
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| 85 |  | 
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| 86 | struct taint_flag { | 
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| 87 | char c_true;		/* character printed when tainted */ | 
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| 88 | char c_false;		/* character printed when not tainted */ | 
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| 89 | bool module;		/* also show as a per-module taint flag */ | 
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| 90 | const char *desc;	/* verbose description of the set taint flag */ | 
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| 91 | }; | 
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| 92 |  | 
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| 93 | extern const struct taint_flag taint_flags[TAINT_FLAGS_COUNT]; | 
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| 94 |  | 
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| 95 | enum lockdep_ok { | 
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| 96 | LOCKDEP_STILL_OK, | 
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| 97 | LOCKDEP_NOW_UNRELIABLE, | 
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| 98 | }; | 
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| 99 |  | 
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| 100 | extern const char *print_tainted(void); | 
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| 101 | extern const char *print_tainted_verbose(void); | 
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| 102 | extern void add_taint(unsigned flag, enum lockdep_ok); | 
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| 103 | extern int test_taint(unsigned flag); | 
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| 104 | extern unsigned long get_taint(void); | 
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| 105 |  | 
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| 106 | #endif	/* _LINUX_PANIC_H */ | 
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| 107 |  | 
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