Re: "Multiple entries for PCI IRQ 16" and "xlock already held" panics on 5.3-BETA(3,4,5)

On Thu, Sep 23, 2004 at 10:29:47AM -0400, John Baldwin wrote:

> > > > panices immediately with "panic: Multiple entries for PCI IRQ 16"
[]
> > I/O Ints:	Type	Polarity    Trigger	Bus ID	 IRQ	APIC ID	PIN#
> > 		INT	active-lo       level	     0	 2:A	      2	  16
> > 		INT	active-lo       level	     0	 2:A	      2	  23
> 
> This is the real bug and I guess I can improve the message.  Then problem is 
> not two lines for IRQ 16, but that the PCI interrrupt for bus 0, device 2, 
> pin #A has two different IRQs listed, so we don't know which one we are 
> supposed to use.  This is definitely a BIOS bug and your motherboard 
> manufacturer needs to harassed into giving you a BIOS update.

  Then shame on MSI.. And some stupid question - maybe a kernel can be given
a hint which one to use (e.g. using /boot/loader.conf...)? Just in case this
is not very uncommon situation to find such a bug in MP table.

> > > > panic: _sx_xlock (user map): xlock already held _at_
> > > > /var/data/5/src/sys/vm/vm_map.c:2997 cpuid = 0
> > >
> > > This is the real bug, can you do 'l *0xc05b541c' from kgdb?
> >
> > (kgdb) l *0xc05b541c
> > 0xc05b541c is in pmap_enter_quick
> 
> I would try asking alc_at_ if he has any ideas for this one.

  Then if I may help in some way (testing patch etc) - I'm at your service
:)

-- 
Pavel Gubin
TUSC&R / Industrial Electronics dept / System Administrator
2:5005/14_at_fidonet / Phone +7-3822-423067 / ICQ 28835566