On Wed, Dec 18, 2002 at 12:05:26AM -0800, Greg KH wrote:
> On Tue, Dec 17, 2002 at 11:22:20PM -0800, Nick Pasich wrote:
> > On Tue, Dec 17, 2002 at 09:59:55PM -0800, Greg KH wrote:
> > > On Tue, Dec 17, 2002 at 03:49:02PM -0800, Nick Pasich wrote:
> > > > My Edgeport/4 works great dialing out..... But locks up the system
> > > > when using mgetty. This occurs after the modem answers.
> > >
> > > What kernel are you using?
> >
> > I've tried 2.4.21-pre1 and 2.5.40...
> >
> >
> > > And have you tried any other getty type program?
> >
> > Yes, I've tried "uugetty" and another program for voice modem access
> > called "vmcp".
> >
> > Each program has the same result.... system lock-up.
>
> No kernel oops message? Is the system still responsive to SysRq
> commands? Can you hook up a serial cable to get a kernel oops that way?
When running kernel 2.4.21pre1 I got an opps that pointed to sched.c line
#564 in /linux/kernel directory.
ie:
if (unlikely(in_interrupt())) {
printk("Scheduling in interrupt\n");
BUG();
}
At that point I noticed I was sharing interrupt 5 with my EMU10K1
sound card and made it into a module (emu10k1) and didn't load it.
After isolating the interrupt, I get no oops, just an unreponsive lockup.
I can enable kernel debugging and see what happens.
> If you enable debugging for the io_edgeport driver, does it show
> anything (do this by loading the driver with "insmod io_edgeport debug=1")
I've been running it with debug=1 and the last couple of lines are:
Dec 17 15:19:10 NICK3 kernel: io_edgeport.c: edge_write_room
Dec 17 15:19:10 NICK3 kernel: io_edgeport.c: edge_write_room - port 0
Dec 17 15:19:10 NICK3 kernel: io_edgeport.c: edge_write_room - returns 1024
Dec 17 15:19:10 NICK3 kernel: io_edgeport.c: edge_write - port 0
Dec 17 15:19:10 NICK3 kernel: io_edgeport.c: edge_write(0) of 1 byte(s) Fifo room
1024 -- will copy 1 bytes
---( Nick Pasich )---
> thanks,
>
> greg k-h
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