On Thu, 05 Jul 2001, Andrew Morton wrote:
> > kernel panic every time (see original post). My CPU is a MediaGX, and
> > Manfred's one is a 6x86MX. What about yours ?
> > After my first unsuccessful attempt with a 2.4.6-pre3, I tried several other
> > 2.4.6-preX and 2.4.5-acX kernels. All 2.4.6 (since pre1) seem to be
> > affected, and so do the latest ac's. I don't have tested 2.4.7-pre[12] yet,
> > but looking at the changelog, I doubt the fix is in.
>
>
> It may help to know which tasklet is in the wrong state.
> Could you please add this patch:
>
> --- 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
HTH,
Manfred
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