From owner-freebsd-bugs Thu Mar 4 11:50:18 1999 Delivered-To: freebsd-bugs@freebsd.org Received: from freefall.freebsd.org (freefall.FreeBSD.ORG [204.216.27.21]) by hub.freebsd.org (Postfix) with ESMTP id C78BD14BD0 for ; Thu, 4 Mar 1999 11:50:17 -0800 (PST) (envelope-from gnats@FreeBSD.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.9.2/8.9.2) id LAA29505; Thu, 4 Mar 1999 11:50:02 -0800 (PST) (envelope-from gnats@FreeBSD.org) Date: Thu, 4 Mar 1999 11:50:02 -0800 (PST) Message-Id: <199903041950.LAA29505@freefall.freebsd.org> To: freebsd-bugs@FreeBSD.org Cc: From: "Kenneth D. Merry" Subject: Re: kern/10281: Crash of 3.1-STABLE system due to scsi error. Reply-To: "Kenneth D. Merry" Sender: owner-freebsd-bugs@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org The following reply was made to PR kern/10281; it has been noted by GNATS. From: "Kenneth D. Merry" To: marijn@gewis.win.tue.nl (Marijn Meijles) Cc: mjacob@feral.com, freebsd-gnats-submit@freebsd.org Subject: Re: kern/10281: Crash of 3.1-STABLE system due to scsi error. Date: Thu, 4 Mar 1999 12:47:22 -0700 (MST) Marijn Meijles wrote... > You wrote: > > Matthew Jacob wrote... > > > > > > > > > So, what ever happened with this? > > > > I don't think I've heard anything back. > > > Well, I did a succesful backup last night without any errors, but > today the system crashed again. At the university I spoke with a > friend of Guido (ex core member) and he told me that there is > a bug in the scsi-system which brings down cdrom.com every three > days. Umm, I know nothing about this. If there is a bug in the SCSI subsystem that causes crashes, why haven't I heard about it? And which machine at "cdrom.com" is crashing? > I think we have the same problem, do you know more about this? > The error message is: > devstat_end_transaction: HELP!! busy_count for da2 < 0 (-245774) > biodone: buffer already done > > the busy counts gets more and more negative. Now that is interesting. That indicates that, somehow or another, transactions are getting done more than once. Which version of sys/cam/scsi/scsi_da.c do you have? Can you mail me the file? If you're getting crashes, it would help immensely if you could provide a stack trace from the panic. Ken -- Kenneth Merry ken@plutotech.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message