1 // SPDX-License-Identifier: GPL-2.0-only
9  * This function is used through-out the kernel (including mm and fs)
57 static unsigned long tainted_mask =
64 unsigned long panic_on_taint;
75 unsigned long panic_print;
96 	unsigned long tmptaint = get_taint();  in proc_taint()
100 		return -EPERM;  in proc_taint()
117 			return -EINVAL;  in proc_taint()
144 		.mode           = 0644,
152 		.maxlen		= sizeof(long),
153 		.mode		= 0644,
160 		.mode		= 0644,
167 		.mode		= 0644,
173 		.maxlen		= sizeof(unsigned long),
174 		.mode		= 0644,
181 		.mode		= 0644,
190 		.mode           = 0644,
199 		.mode		= 0644,
207 		.mode		= 0644,
248 static long no_blink(int state)  in no_blink()
253 /* Returns how long it waited in ms */
254 long (*panic_blink)(int state);
258  * Stop ourself in panic -- architecture code may override this
279  * per-CPU features such as virtualization extensions.
386 	/* Temporary allow non-panic CPUs to write their backtraces. */  in panic_trigger_all_cpu_backtrace()
399  * and then performs the secondary CPUs shutdown - we cannot have
422  * vpanic - halt the system
431 	long i, i_next = 0, len;  in vpanic()
455 	 * It's possible to come here directly from a panic-assertion and  in vpanic()
479 	if (len && buf[len - 1] == '\n')  in vpanic()
480 		buf[len - 1] = '\0';  in vpanic()
482 	pr_emerg("Kernel panic - not syncing: %s\n", buf);  in vpanic()
484 	 * Avoid nested stack-dumping if a panic occurs during oops processing  in vpanic()
586 		/* Make sure the user can actually press Stop-A (L1-A) */  in vpanic()
588 		pr_emerg("Press Stop-A (L1-A) from sun keyboard or send break\n"  in vpanic()
595 	pr_emerg("---[ end Kernel panic - not syncing: %s ]---\n", buf);  in vpanic()
639  * TAINT_FORCED_RMMOD could be a per-module flag but the module
681 		char c = is_set ? t->c_true : t->c_false;  in print_tainted_seq()
685 				seq_buf_printf(s, "%s[%c]=%s", sep, c, t->desc);  in print_tainted_seq()
710  * print_tainted - return a string to represent the kernel taint state.
712  * For individual taint flag meanings, see Documentation/admin-guide/sysctl/kernel.rst
723  * print_tainted_verbose - A more verbose version of print_tainted()
736 unsigned long get_taint(void)  in get_taint()
747  * some notewortht-but-not-corrupting cases, it can be set to true.
779 	unsigned long flags;  in do_oops_enter_exit()
798 			} while (--spin_counter);  in do_oops_enter_exit()
813  * Return true if the calling CPU is allowed to print oops-related info.
828  * side-effect of preventing later-oopsing CPUs from mucking up the display,
832  * the right duration, whereas all the other CPUs pause for twice as long:
849 	pr_warn("---[ end trace %016llx ]---\n", 0ULL);  in print_oops_end_marker()
878 			raw_smp_processor_id(), current->pid, file, line,  in __warn()
882 			raw_smp_processor_id(), current->pid, caller);  in __warn()
886 #pragma GCC diagnostic ignored "-Wsuggest-attribute=format"  in __warn()
889 		vprintk(args->fmt, args->args);  in __warn()
905 	trace_error_report_end(ERROR_DETECTOR_WARN, (unsigned long)caller);  in __warn()
958 	memset(__start_once, 0, __end_once - __start_once);  in clear_warn_once_set()
979  * Called when gcc's -fstack-protector feature is used, and
980  * gcc detects corruption of the on-stack canary value
984 	unsigned long flags;  in __stack_chk_fail()
989 	panic("stack-protector: Kernel stack is corrupted in: %pB",  in __stack_chk_fail()
1026 		return -EINVAL;  in oops_setup()
1038 		return -EINVAL;  in panic_on_taint_setup()
1042 		return -EINVAL;  in panic_on_taint_setup()
1044 	/* make sure panic_on_taint doesn't hold out-of-range TAINT flags */  in panic_on_taint_setup()
1048 		return -EINVAL;  in panic_on_taint_setup()