Re: bugs in __schedule()

[gshan <gshan@alcatel-lucent.com>]

Here is the all output I have:

# ifconfig mgt0 10.0.51.27
BUG: scheduling while atomic: exe/0x00000101/752
caller is schedule+0x4c/0xe4
Call trace:
[c02dc4dc] __schedule+0x654/0x788
[c02dc6f4] schedule+0x4c/0xe4
[c02dbe24] __compat_down+0xc8/0x12c
[c0226b60] mv_sw_read_reg+0x178/0x17c
[c02296fc] mvSwIntrTasklet+0x128/0x744
[c0020afc] tasklet_action+0x7c/0xec
[c00204f4] ___do_softirq+0x80/0x11c
[c00205cc] __do_softirq+0x3c/0x6c
[c00206a4] do_softirq+0x60/0x68
[c00207a8] irq_exit+0x6c/0x94
[c0005e1c] do_IRQ+0x88/0xa4
[c0004b70] ret_from_except+0x0/0x18
[c000680c] __delay+0xc/0x14
[c0226598] mv_sw_read_smi_reg+0x84/0x1ac
[c0226adc] mv_sw_read_reg+0xf4/0x17c


Satyam Sharma wrote:
> Hi Gavin,
>
> On 6/26/07, gshan <gshan@alcatel-lucent.com> wrote:
> > Anybody has suggestions on this crash?
> >
> > [c02dc4dc] __schedule+0x654/0x788
> >  [c02dc6f4] schedule+0x4c/0xe4
> >  [c02dbe24] __compat_down+0xc8/0x12c
> >  [c0226b60] mv_sw_read_reg+0x178/0x17c
> >  [c02296fc] mvSwIntrTasklet+0x128/0x744
> >  [c0020afc] tasklet_action+0x7c/0xec
> >  [c00204f4] ___do_softirq+0x80/0x11c
> >  [c00205cc] __do_softirq+0x3c/0x6c
> >  [c00206a4] do_softirq+0x60/0x68
> >  [c00207a8] irq_exit+0x6c/0x94
> >  [c0005e1c] do_IRQ+0x88/0xa4
> >  [c0004b70] ret_from_except+0x0/0x18
> >  [c000680c] __delay+0xc/0x14
> >  [c0226598] mv_sw_read_smi_reg+0x84/0x1ac
>
> I bet you got more output than that, didn't you? :-)
>
> Now I know this must be a "scheduling while interrupts disabled",
> but why not post the whole error message?
>
> [ Reminds me of the other thread where someone thought just mentioning
> the EIP without any backtrace / other messages was enough to resolve a
> boot-time panic. I agree they're all magicians on this list, but Gods 
> they're
> not ... ]
>
> BTW I don't see "mvSwIntrTasklet" anywhere on -rc6. Is this a -mm kernel?
>
> Cheers,
> Satyam

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