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2f183c6834
With nearly 20 taint flags and respective characters, it's getting a bit difficult to remember what each taint flag character means. Add verbose logging of the set taints in the format: Tainted: [P]=PROPRIETARY_MODULE, [W]=WARN in dump_stack_print_info() when there are taints. Note that the "negative flag" G is not included. Link: https://lkml.kernel.org/r/7321e306166cb2ca2807ab8639e665baa2462e9c.1717146197.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
100 lines
2.8 KiB
C
100 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_PANIC_H
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#define _LINUX_PANIC_H
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#include <linux/compiler_attributes.h>
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#include <linux/types.h>
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struct pt_regs;
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extern long (*panic_blink)(int state);
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__printf(1, 2)
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void panic(const char *fmt, ...) __noreturn __cold;
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void nmi_panic(struct pt_regs *regs, const char *msg);
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void check_panic_on_warn(const char *origin);
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extern void oops_enter(void);
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extern void oops_exit(void);
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extern bool oops_may_print(void);
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extern int panic_timeout;
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extern unsigned long panic_print;
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extern int panic_on_oops;
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extern int panic_on_unrecovered_nmi;
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extern int panic_on_io_nmi;
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extern int panic_on_warn;
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extern unsigned long panic_on_taint;
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extern bool panic_on_taint_nousertaint;
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extern int sysctl_panic_on_rcu_stall;
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extern int sysctl_max_rcu_stall_to_panic;
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extern int sysctl_panic_on_stackoverflow;
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extern bool crash_kexec_post_notifiers;
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extern void __stack_chk_fail(void);
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void abort(void);
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/*
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* panic_cpu is used for synchronizing panic() and crash_kexec() execution. It
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* holds a CPU number which is executing panic() currently. A value of
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* PANIC_CPU_INVALID means no CPU has entered panic() or crash_kexec().
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*/
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extern atomic_t panic_cpu;
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#define PANIC_CPU_INVALID -1
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/*
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* Only to be used by arch init code. If the user over-wrote the default
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* CONFIG_PANIC_TIMEOUT, honor it.
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*/
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static inline void set_arch_panic_timeout(int timeout, int arch_default_timeout)
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{
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if (panic_timeout == arch_default_timeout)
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panic_timeout = timeout;
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}
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/* This cannot be an enum because some may be used in assembly source. */
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#define TAINT_PROPRIETARY_MODULE 0
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#define TAINT_FORCED_MODULE 1
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#define TAINT_CPU_OUT_OF_SPEC 2
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#define TAINT_FORCED_RMMOD 3
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#define TAINT_MACHINE_CHECK 4
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#define TAINT_BAD_PAGE 5
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#define TAINT_USER 6
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#define TAINT_DIE 7
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#define TAINT_OVERRIDDEN_ACPI_TABLE 8
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#define TAINT_WARN 9
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#define TAINT_CRAP 10
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#define TAINT_FIRMWARE_WORKAROUND 11
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#define TAINT_OOT_MODULE 12
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#define TAINT_UNSIGNED_MODULE 13
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#define TAINT_SOFTLOCKUP 14
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#define TAINT_LIVEPATCH 15
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#define TAINT_AUX 16
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#define TAINT_RANDSTRUCT 17
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#define TAINT_TEST 18
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#define TAINT_FLAGS_COUNT 19
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#define TAINT_FLAGS_MAX ((1UL << TAINT_FLAGS_COUNT) - 1)
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struct taint_flag {
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char c_true; /* character printed when tainted */
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char c_false; /* character printed when not tainted */
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bool module; /* also show as a per-module taint flag */
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const char *desc; /* verbose description of the set taint flag */
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};
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extern const struct taint_flag taint_flags[TAINT_FLAGS_COUNT];
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enum lockdep_ok {
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LOCKDEP_STILL_OK,
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LOCKDEP_NOW_UNRELIABLE,
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};
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extern const char *print_tainted(void);
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extern const char *print_tainted_verbose(void);
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extern void add_taint(unsigned flag, enum lockdep_ok);
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extern int test_taint(unsigned flag);
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extern unsigned long get_taint(void);
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#endif /* _LINUX_PANIC_H */
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