5.4pre panic

Kris Kennaway kris at obsecurity.org
Wed Mar 30 06:27:57 PST 2005


On Wed, Mar 30, 2005 at 04:17:08PM +0200, Rene Ladan wrote:
> On Wed, Mar 30, 2005 at 05:51:04AM -0800, Kris Kennaway wrote:
> > On Wed, Mar 30, 2005 at 12:11:23PM +0200, Rene Ladan wrote:
> > > Got this panic with auto-reboot (no dump :(  ), saved from dmesg on
> > > 5.4pre 2003-05-29 09:49 UTC
> > > 
> > > processor eflags	= IOPL = 0
> > > current process		= 29 (swi1: net)
> > > trap number		= 3
> > > panic: breakpoint instruction fault
> > 
> > I'd have expected this panic to be the result of setting a breakpoint,
> > i.e. requesting the kernel to panic at this location.  Are you
> > absolutely certain this is not the case?
> I did not set a breakpoint, maybe some application was doing it for me.
> I was working in X at the moment.
> 
> > If so, you should try to use
> > DDB to obtain a traceback to find out what it was doing.
> I have DDB/KDB in my kernelconfig, but auto-reboot without dump doesn't
> help much, does it?

The point is to disable "auto-reboot" (I assume you mean
DDB_UNATTENDED?) and obtain the traceback manually from the ddb prompt
when it panics.

Kris
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