1 // SPDX-License-Identifier: GPL-2.0
3 * Stack trace management functions
5 * Copyright IBM Corp. 2006
8 #include <linux/stacktrace.h>
9 #include <asm/stacktrace.h>
10 #include <asm/unwind.h>
11 #include <asm/kprobes.h>
13 void arch_stack_walk(stack_trace_consume_fn consume_entry, void *cookie,
14 struct task_struct *task, struct pt_regs *regs)
16 struct unwind_state state;
19 unwind_for_each_frame(&state, task, regs, 0) {
20 addr = unwind_get_return_address(&state);
21 if (!addr || !consume_entry(cookie, addr))
26 int arch_stack_walk_reliable(stack_trace_consume_fn consume_entry,
27 void *cookie, struct task_struct *task)
29 struct unwind_state state;
32 unwind_for_each_frame(&state, task, NULL, 0) {
33 if (state.stack_info.type != STACK_TYPE_TASK)
39 addr = unwind_get_return_address(&state);
45 * Mark stacktraces with kretprobed functions on them
48 if (state.ip == (unsigned long)__kretprobe_trampoline)
52 if (!consume_entry(cookie, addr))
56 /* Check for stack corruption */
57 if (unwind_error(&state))