Re: PROBLEM: [2.4.6] kernel BUG at softirq.c:206!

[Andrew Morton]

"Manfred H. Winter" wrote:
> 
> ...
> > --- linux-2.4.6/kernel/softirq.c      Wed Jul  4 18:21:32 2001
> > +++ lk-ext3/kernel/softirq.c  Thu Jul  5 21:32:08 2001
> > @@ -202,8 +202,10 @@ static void tasklet_hi_action(struct sof
> >               if (!tasklet_trylock(t))
> >                       BUG();
> >  repeat:
> > -             if (!test_and_clear_bit(TASKLET_STATE_SCHED, &t->state))
> > +             if (!test_and_clear_bit(TASKLET_STATE_SCHED, &t->state)) {
> > +                     printk("func: %p\n", t->func);
> >                       BUG();
> > +             }
> >               if (!atomic_read(&t->count)) {
> >                       local_irq_enable();
> >                       t->func(t->data);
> >
> 
> Okay, here's the output of gdb:
> 
> (gdb) x/10i 0xc0118028
> 0xc0118028 <bh_action>: mov    0x4(%esp,1),%eax
> 0xc011802c <bh_action+4>:       cmpl   $0x0,0xc025c2e4
> 0xc0118033 <bh_action+11>:      jne    0xc0118043 <bh_action+27>
> 0xc0118035 <bh_action+13>:      mov    0xc024af20(,%eax,4),%eax
> 0xc011803c <bh_action+20>:      test   %eax,%eax
> 0xc011803e <bh_action+22>:      je     0xc0118042 <bh_action+26>
> 0xc0118040 <bh_action+24>:      call   *%eax
> 0xc0118042 <bh_action+26>:      ret
> 0xc0118043 <bh_action+27>:      lea    (%eax,%eax,4),%eax
> 0xc0118046 <bh_action+30>:      lea    0xc025bf80(,%eax,4),%eax
> 

Well I guess it tells us it's not random uninitialised
crud.

Just for interest: what happens if you swap around the lines

        time_init();
        softirq_init();

in init/main.c?

-