Date: Mon, 10 Apr 2006 06:55:23 -0400 From: Bill Moran <wmoran@collaborativefusion.com> To: eol1@yahoo.com Cc: freebsd-questions@freebsd.org Subject: Re: Hard crash on 6.x -- reproducible, multiple people affected Message-ID: <20060410065523.54f8396f.wmoran@collaborativefusion.com> In-Reply-To: <20060410040401.79401.qmail@web51901.mail.yahoo.com> References: <20060402201721.GA58258@xor.obsecurity.org> <20060410040401.79401.qmail@web51901.mail.yahoo.com>
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Peter Thoenen <eol1@yahoo.com> wrote: > --- Kris Kennaway <kris@obsecurity.org> wrote: > > On Sun, Apr 02, 2006 at 04:09:30PM -0400, Anish Mistry wrote: > > > > It's not clear what he means by "hard crash", but he also says > > > > power off", which is the part that is most confusing to me. > > > Hmmm...I missed that part. Yeah, if it powers off then I'm not > > sure what you can do to debug it. > > By hard crash I mean the box just instantly powers off. No shutdown > syncs, no error, panic's, or dump generated, nothing logged in syslog, > and I have a serial cable hooked up to another another dumb terminal > hoping to maybe catch a panic or some debug message dumped out over > serial as it goes down but nothing there also. It just stops. > > Also note that this didn't happen on 5.x. And when not running those > particular ports the box stays up just fine for weeks on end. Just > tried again with 6.1 PRERELEASE and same issue. > > > About all I can think of is to try to reproduce the problem with > > enough logging enabled (e.g. running the binary under ktrace), with > > sync-mounted filesystem, and hope that the last few entries give the > > software developer enough of a clue what the process was doing at the > > time of shutdown (the operation itself probably will not be logged) > > that he can focus the investigation further. > > Want to walk me through this and will do. As I said, reproducible. You could also install the setup under Bochs and enable full logging. -- Bill Moran Potential Technologies http://www.potentialtech.com
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