Re: panic when printing

On Mon, 23 Jul 2007 18:04:14 -0400
John Baldwin <jhb_at_freebsd.org> wrote:

> On Tuesday 03 July 2007 05:42:48 am Gary Jennejohn wrote:
> > I haven't seen this reported before.
> > 
> > Trying to print to my parallel printer with a -current kernel from
> > July 2 (amd64) results in a kernel panic. A kernel from June 16
> > (i386) does not cause a panic.
> > 
> > If I boot with the printer turned on then the kernel sees it (PnP)
> > with no problem. Just printing causes a panic.
> > 
> > BTW this kernel is using the SMP-scheduler from Jeff Roberson, but
> > IIRC a different kernel (June 29) w/o that scheduler also panics.
> > 
> > I can't say whether it's amd64-specific or just due to recent
> > changes to the sources. I'm rather reluctant to generate a new i386
> > kernel to check that, but I could be persuaded to do it.
> > 
> > Below a typescript of a very limited kgdb session:
> 
> You got an interrupt after the lpt driver removed its handler.
> Really the ppbus device should not be so stupid and should have its
> own interrupt handler that routes interrupts to the "active" child.
> 
[snip kgdb output]

Exactly. If I disable the interrupt in device.hints I can print wth
no problems. I suspect that this problem exists for i386 also.

--- 
Gary Jennejohn