> panic: APIC: Previous IPI is stupcmka
John Baldwin
jhb at FreeBSD.org
Tue Jun 22 21:21:51 GMT 2004
On Tuesday 22 June 2004 05:43 am, Kris Kennaway wrote:
> On Mon, Jun 21, 2004 at 09:41:42PM -0700, Kris Kennaway wrote:
> > > panic: APIC: Previous IPI is stupcmka
> > > u_clpauziydf i=x :0 ;s p
> > > cnD efbourg g5e0r0(0"0p0a0n0i
> > > ")
> >
> > I updated this smp machine -current tonight, played with mutex
> > profiling a bit, and it died after an hour or so of package building
> > load. It hung here.
>
> This happened again under similar circumstances (running a cvs update
> with some network stuff going on). Similar interleaved panic message:
>
> _anic: APIC: Previous IPI is stpumcakp
> nlcapzuyifdi x=: 0s;p u
> i Dfeobru g5g0e0r0(0"0p0a0n
> c")
Seems the two CPUs are deadlocked waiting on each other. The first sent a
pmap_lazyfixup IPI to the second but the second has interrupts disabled as it
is trying to send an IPI as well.
--
John Baldwin <jhb at FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve" = http://www.FreeBSD.org
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