Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Copyright (C) 2013 Richard Weinberger <richrd@nod.at>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <linux/kallsyms.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/sched/debug.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/sched/task_stack.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <asm/sysrq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <asm/stacktrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <os.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) static void _print_addr(void *data, unsigned long address, int reliable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	const char *loglvl = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	printk("%s [<%08lx>] %s%pS\n", loglvl, address, reliable ? "" : "? ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 		(void *)address);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) static const struct stacktrace_ops stackops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	.address = _print_addr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) void show_stack(struct task_struct *task, unsigned long *stack,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 		       const char *loglvl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	struct pt_regs *segv_regs = current->thread.segv_regs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	if (!segv_regs && os_is_signal_stack()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 		pr_err("Received SIGSEGV in SIGSEGV handler,"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 				" aborting stack trace!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	if (!stack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 		stack = get_stack_pointer(task, segv_regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	printk("%sStack:\n", loglvl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	for (i = 0; i < 3 * STACKSLOTS_PER_LINE; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 		if (kstack_end(stack))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 		if (i && ((i % STACKSLOTS_PER_LINE) == 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 			pr_cont("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 		pr_cont(" %08lx", *stack++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	printk("%sCall Trace:\n", loglvl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	dump_trace(current, &stackops, (void *)loglvl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) }