获取Linux内核的dump_stack到char数组而不是控制台

Question

So, when I call dump_stack(), it printk's to dmesg. But, I need it to, let's say, 'print' it to char array, so that I could display the stack much, much later, in a different place.

Is it possible? It would help me sooo much with debugging a nasty bug I'm having!

Answer 1

The tool that you need is called save_stack_trace .

First read Baruch's Linux kernel deferred stack trace blog . Then read Eugene's answer to a similar SO post.