Re: 2.4.18-ben0 on G4 SMP: do_IRQ waiting for irq lock

Harald,
I've seen the same problem with cups on my G4 dual
450.

In addition, my machine hangs whenever the macserial
driver is closed (e.g., open /dev/ttyS0 with minicom,
the exit).

Does your machine do this as well?

-roger

On Sat, 9 Mar 2002 10:43:28 +0100,
laforge@gnumonks.org wrote:

On Fri, Mar 08, 2002 at 07:34:09PM +0100,

benh@kernel.crashing.org wrote:

quoted

Could be a driver bug showing up, difficult to say.

The problem definitely

quoted

doesn't happen here (dual G4 450Mhz, 2x7400 CPU

with highmem). The fact that

quoted

the IRQ lock can be held by the other CPU is normal

though, both CPUs don't

quoted

take external IRQs but decrementer ones for example

happen on both.

quoted

That said, I don't know what is causing your

problem.

I've now managed to get the kernel running - so far

without any crashes for

one day.

The problem seemed connected with the cups daemon. If

I don't start (or use)

any part of the cups (common unix printing system),

it runs fine.

I don't know what cups is trying to do, since there

are no local printers

configured. Everything it is supposed to do is to

submit remote printjobs

to my printer server.

As of drivers, the only hardware driver (apart from

standard pmu, aty128fb,

sungem) I'm using is tulip for a 21x4x network board.

But the problems are not related with this network

interface, since I'm

heavily using it for NFS, etc. I've also tried to

pingflood the machine

on both network interfaces - no problem.

quoted

Ben.

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