Get user stackpointer from task_struct
pranjas at gmail.com
Fri Nov 6 00:18:12 EST 2015
On Wed, Nov 4, 2015 at 2:54 AM, Shirish Gajera <gshirishfree at gmail.com> wrote:
> I have kcore and I want to get userspace backtrace from kcore. I looked at
> some macro but still this is just giving me kernel backtrace only. What I
> want is userspace backtrace.
> Good news is I have pointer to task_struct.
> task_struct->thread->sp (Kernel stack pointer)
> task_struct->thread->usersp (user stack pointer) but this is junk
you tried task_thread_info and task_stack_page?
> My question is how to get userspace backtrace (or stack pointer) from kcore
> or task_struct ?
> - Shirish
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