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Re: snia lcrash questions

To: "Moo Kim" <Moo.Kim@xxxxxxx>, "Ken Pearlstein" <pearlste@xxxxxxxxxxxx>
Subject: Re: snia lcrash questions
From: "Tom Morano" <tjm@xxxxxxx>
Date: Wed, 14 Mar 2001 10:56:41 -0800
Cc: "Dave Craft" <dcraft@xxxxxxxxxxxxxx>, "Matt D. Robinson" <yakker@xxxxxxxxxxxxxx>, <lkcd@xxxxxxxxxxx>
References: <3AAFAC82.6FFB0C78@xxxxxxxxxxxxxx> <200103141749.LAA45332@xxxxxxxxxxxxxxxxxxxx> <20010314102514.L18766@xxxxxxxxxxxxxxxxxxxxxxxxxxx> <3AAFB9A0.1A2A313E@xxxxxxxxxxxx> <20010314105350.N18766@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
Sender: owner-lkcd@xxxxxxxxxxx
>
>  Hello Ken,
>
>  I was simply following up with Matt and Dave's email
>  below.   I have not tried out (yet) whether lcrash
>  is capable of debugging kernel modules.   If lcrash
>  already supports kernel modules for analyzing panic
>  dumps as well as live debugging, that is a great news.

It doesn't yet, but I do have plans of implementing Dave's suggested
modifications.
I have been somewhat sidetracked of late and have not had a chance to get
back to
this. It is on my plate though.

Thanks,

Tom

>
>  Thanks,
>
>  Moo
>
> On Wed, Mar 14, 2001 at 01:34:08PM -0500, Ken Pearlstein wrote:
> > Moo Kim wrote:
> >
> > Here is the output from lcrash of the trace command ... I called panic
when
> > the rmmod was done
> >
> > >> trace e000000049420000
> > ================================================================
> > STACK TRACE FOR TASK: 0xe000000049420000 (rmmod)
> >
> >  0 dump_execute+380 [0xe00000000071b9dc]
> >  1 panic+508 [0xe0000000005bfc9c]
> >
> > this trace seems correct .... What part of lcrash is not working in
> > analyzing modules ??
> >
> > >  I somehow assumed that lcrash was capable of debugging
> > >  kernel modules.   I guess not.   Is it possible to
> > >  incorporate Dave's patch into lcrash distribution
> > >  because it will be extremely useful for kernel module
> > >  developer ?
> > >
> > >  Thanks,
> > >
> > >  Moo Kim    Moo.Kim@xxxxxxx
> > >  NCR Corporation
> > >
> > > On Wed, Mar 14, 2001 at 11:49:04AM -0600, Dave Craft wrote:
> > > >
> > > > >You can't use a module to call panic().  lcrash isn't capable (yet)
> > > > >of debugging kernel modules.  The resulting crash dump may not be
> > > >
> > > >       Regarding the above statement about inability to
> > > >       debug kernel modules.  Did you guys ever get around
> > > >       to looking/rewriting the patch I supplied for getting
tracebacks
> > > >       in kernel modules?  The patch still applies and still
> > > >       works.  Its buried in the archives of this mailing list.
> > > >
> > > >       Is there any idea on when we'd see comparable
> > > >       function make it into lcrash?
> > > >
> > > > --
> > > >       Mail : dave@xxxxxxxxxxxxxx      Phone : 512-838-8248
> > > >                   I am Jack's email closing
> >
> > --
> >
==========================================================================
> > Ken Pearlstein                                  Field Tech Support
Analyst
> >
> > cell phone 703-362-9793                     pager 888 308-0734
> > C/O SILICON GRAPHICS                        pearlste@xxxxxxxxxxxxxxxxxxx
> > 14160 NEWBROOK DRIVE, SUITE 100            voice: (703) 227-8531
430-5403
> > CHANTILLY, VA  20151                       fax:   (703) 277-8500
430-5403
> >
=========================================================================
> >
>


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