32 bool noinstr in_task_stack(unsigned long *stack, struct task_struct *task,  in in_task_stack()  argument
38 	if (stack < begin || stack >= end)  in in_task_stack()
50 bool noinstr in_entry_stack(unsigned long *stack, struct stack_info *info)  in in_entry_stack()  argument
57 	if ((void *)stack < begin || (void *)stack >= end)  in in_entry_stack()
128 		/* No access to the user space stack of other tasks. Ignore. */  in show_opcodes()
160 	 * ordering reasons: if the registers are on the next stack, we don't  in show_regs_if_on_stack()
162 	 * the wrong stack.  Later, when show_trace_log_lvl() switches to the  in show_regs_if_on_stack()
163 	 * next stack, this function will be called again with the same regs so  in show_regs_if_on_stack()
181  * This function reads pointers from the stack and dereferences them. The
187 			unsigned long *stack, const char *log_lvl)  in show_trace_log_lvl()  argument
197 	unwind_start(&state, task, regs, stack);  in show_trace_log_lvl()
201 	 * Iterate through the stacks, starting with the current stack pointer.  in show_trace_log_lvl()
202 	 * Each stack has a pointer to the next one.  in show_trace_log_lvl()
205 	 * - task stack  in show_trace_log_lvl()
206 	 * - interrupt stack  in show_trace_log_lvl()
208 	 * - entry stack  in show_trace_log_lvl()
211 	 * - task stack  in show_trace_log_lvl()
212 	 * - softirq stack  in show_trace_log_lvl()
213 	 * - hardirq stack  in show_trace_log_lvl()
214 	 * - entry stack  in show_trace_log_lvl()
216 	for (stack = stack ?: get_stack_pointer(task, regs);  in show_trace_log_lvl()
217 	     stack;  in show_trace_log_lvl()
218 	     stack = stack_info.next_sp) {  in show_trace_log_lvl()
221 		stack = PTR_ALIGN(stack, sizeof(long));  in show_trace_log_lvl()
223 		if (get_stack_info(stack, task, &stack_info, &visit_mask)) {  in show_trace_log_lvl()
225 			 * We weren't on a valid stack.  It's possible that  in show_trace_log_lvl()
226 			 * we overflowed a valid stack into a guard page.  in show_trace_log_lvl()
230 			stack = (unsigned long *)PAGE_ALIGN((unsigned long)stack);  in show_trace_log_lvl()
231 			if (get_stack_info(stack, task, &stack_info, &visit_mask))  in show_trace_log_lvl()
243 		 * Scan the stack, printing any text addresses we find.  At the  in show_trace_log_lvl()
244 		 * same time, follow proper stack frames with the unwinder.  in show_trace_log_lvl()
252 		for (; stack < stack_info.end; stack++) {  in show_trace_log_lvl()
255 			unsigned long addr = READ_ONCE_NOCHECK(*stack);  in show_trace_log_lvl()
266 			if (regs && stack == &regs->ip)  in show_trace_log_lvl()
269 			if (stack == ret_addr_p)  in show_trace_log_lvl()
274 			 * function, its return address on the stack is  in show_trace_log_lvl()
282 							  addr, stack);  in show_trace_log_lvl()
315 	 * Stack frames below this one aren't interesting.  Don't show them  in show_stack()
385 	 * We're not going to return, but we might be on an IST stack or  in oops_end()
386 	 * have very little stack space left.  Rewind the stack and kill  in oops_end()
388 	 * Before we rewind the stack, we have to tell KASAN that we're going to  in oops_end()
389 	 * reuse the task stack and that existing poisons are invalid.  in oops_end()
475 	 * When in-kernel, we also print out the stack at the time of the fault..  in show_regs()