1 /* SPDX-License-Identifier: GPL-2.0 */
5 #include <linux/compiler_attributes.h>
6 #include <linux/types.h>
10 extern long (*panic_blink)(int state);
12 void panic(const char *fmt, ...) __noreturn __cold;
13 void nmi_panic(struct pt_regs *regs, const char *msg);
14 void check_panic_on_warn(const char *origin);
15 extern void oops_enter(void);
16 extern void oops_exit(void);
17 extern bool oops_may_print(void);
19 extern int panic_timeout;
20 extern unsigned long panic_print;
21 extern int panic_on_oops;
22 extern int panic_on_unrecovered_nmi;
23 extern int panic_on_io_nmi;
24 extern int panic_on_warn;
26 extern unsigned long panic_on_taint;
27 extern bool panic_on_taint_nousertaint;
29 extern int sysctl_panic_on_rcu_stall;
30 extern int sysctl_max_rcu_stall_to_panic;
31 extern int sysctl_panic_on_stackoverflow;
33 extern bool crash_kexec_post_notifiers;
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().
40 extern atomic_t panic_cpu;
41 #define PANIC_CPU_INVALID -1
44 * Only to be used by arch init code. If the user over-wrote the default
45 * CONFIG_PANIC_TIMEOUT, honor it.
47 static inline void set_arch_panic_timeout(int timeout, int arch_default_timeout)
49 if (panic_timeout == arch_default_timeout)
50 panic_timeout = timeout;
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
62 #define TAINT_OVERRIDDEN_ACPI_TABLE 8
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
71 #define TAINT_RANDSTRUCT 17
73 #define TAINT_FLAGS_COUNT 19
74 #define TAINT_FLAGS_MAX ((1UL << TAINT_FLAGS_COUNT) - 1)
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 */
82 extern const struct taint_flag taint_flags[TAINT_FLAGS_COUNT];
86 LOCKDEP_NOW_UNRELIABLE,
89 extern const char *print_tainted(void);
90 extern void add_taint(unsigned flag, enum lockdep_ok);
91 extern int test_taint(unsigned flag);
92 extern unsigned long get_taint(void);
94 #endif /* _LINUX_PANIC_H */