Re: [PATCH] MIPS: oops when show backtrace of all active cpu

[Fan Du <fan.du@windriver.com>]

On 2012年08月02日 12:18, Kevin Cernekee wrote:
> On Wed, Aug 1, 2012 at 8:31 PM, Fan Du<fdu@windriver.com>  wrote:
> > show_backtrace must have an valid task when calling unwind_stack,
> > so fix it by checking first.
> [...]
> > --- a/arch/mips/kernel/traps.c
> > +++ b/arch/mips/kernel/traps.c
> > @@ -151,6 +151,10 @@ static void show_backtrace(struct task_struct *task, const 
> > struct pt_regs *regs)
> >                  show_raw_backtrace(sp);
> >                  return;
> >          }
> > +
> > +       if (task == NULL)
> > +               task = current;
> > +
> >          printk("Call Trace:\n");
> >          do {
> >                  print_ip_sym(pc);
> FYI, a slightly different version of this change was accepted:
>
> https://patchwork.linux-mips.org/patch/3524/
Oh, Looks like I'm late :)
thanks anyway.


--

Love each day!
--fan