From owner-freebsd-hardware Sun Sep 13 11:03:30 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id LAA00354 for freebsd-hardware-outgoing; Sun, 13 Sep 1998 11:03:30 -0700 (PDT) (envelope-from owner-freebsd-hardware@FreeBSD.ORG) Received: from word.smith.net.au (castles233.castles.com [208.214.165.233]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id LAA00348 for ; Sun, 13 Sep 1998 11:03:26 -0700 (PDT) (envelope-from mike@word.smith.net.au) Received: from word.smith.net.au (localhost [127.0.0.1]) by word.smith.net.au (8.9.1/8.8.8) with ESMTP id LAA06566; Sun, 13 Sep 1998 11:09:03 -0700 (PDT) (envelope-from mike@word.smith.net.au) Message-Id: <199809131809.LAA06566@word.smith.net.au> X-Mailer: exmh version 2.0.2 2/24/98 To: "Kenneth D. Merry" cc: Jos.Backus@nl.origin-it.com (Jos Backus), hardware@FreeBSD.ORG Subject: Re: Buslogic/Mylex HAs In-reply-to: Your message of "Sun, 13 Sep 1998 11:36:21 MDT." <199809131736.LAA05042@panzer.plutotech.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Sun, 13 Sep 1998 11:09:02 -0700 From: Mike Smith Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org > I've seen panics on -stable and -current with cdda2wav; they seem to be > related to shared memory usage. It'll probably take someone more familiar > with the VM system to sort them out, though. The problem doesn't seem to > be directly attributable to CAM, but it my be exacerbated by CAM. > > It looks like cdrecord uses shared memory as well, so the panic may be > similar. Can you send me a stack trace? Just out of curiosity, does the CAM stack use a lazy mechanism for cleaning up after transfers? It sounds very much like what's happening here is that the process has been doing I/O to the shared memory segment, finishes and attempts to delete the segment, but parts of it are still marked busy. -- \\ Sometimes you're ahead, \\ Mike Smith \\ sometimes you're behind. \\ mike@smith.net.au \\ The race is long, and in the \\ msmith@freebsd.org \\ end it's only with yourself. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message