From owner-aic7xxx Mon Sep 21 12:06:41 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id MAA10061 for aic7xxx-outgoing; Mon, 21 Sep 1998 12:06:41 -0700 (PDT) (envelope-from owner-aic7xxx@FreeBSD.ORG) Received: from dledford.dialnet.net (dledford.dialnet.net [206.65.249.116]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id MAA09954 for ; Mon, 21 Sep 1998 12:06:27 -0700 (PDT) (envelope-from dledford@dialnet.net) Received: from dialnet.net (dledford@localhost [127.0.0.1]) by dledford.dialnet.net (8.8.7/8.8.7) with ESMTP id OAA21863; Mon, 21 Sep 1998 14:05:34 -0500 Message-ID: <3606A37E.CD8902A2@dialnet.net> Date: Mon, 21 Sep 1998 14:05:34 -0500 From: Doug Ledford X-Mailer: Mozilla 4.06 [en] (X11; I; Linux 2.0.35 i686) MIME-Version: 1.0 To: Heinz Mauelshagen CC: aic7xxx@FreeBSD.ORG, mge@u9ete.ez-darmstadt.telekom.de Subject: Re: IRQ deadlocks References: <9809211135.AA24221@mailgate99.telekom.de> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-aic7xxx@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Heinz Mauelshagen wrote: > > Disable SMP and live a happy life. That, or downgrade the kernel to version > > 2.0.33 and patch in the latest driver. The thing is, I have information > > from a kernel deadlock where in I gathered the EIP information using the > > print EIP patch, and the deadlock isn't related to the aic7xxx driver at all > > (however, a faster disk subsystem will trigger the problem more often). It > > appears to be a generic vm bug in the 34 and 35 kernels under SMP. With SMP > > disabled, all is fine. With 2.0.33, all was fine. FWIW, the bug probably > > existed in 2.0.33 as well, but for 2.0.34 thye made a change to the vm > > subsystem that allowed swapping of shared COW pages (which 2.0.33 didn't do) > > and this appears to have made it much easier to trigger the actual bug, > > which is somewhere in the fork() code. That's my take on it anyway. > > > > Does the vm bug show up in kernel > 2.1.120 on SMP too? No, not that I'm aware of. -- Doug Ledford Opinions expressed are my own, but they should be everybody's. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-aic7xxx" in the body of the message