From owner-freebsd-stable Fri Aug 20 15:32:39 1999 Delivered-To: freebsd-stable@freebsd.org Received: from salmon.maths.tcd.ie (salmon.maths.tcd.ie [134.226.81.11]) by hub.freebsd.org (Postfix) with SMTP id 5295114DDF for ; Fri, 20 Aug 1999 15:32:36 -0700 (PDT) (envelope-from dwmalone@maths.tcd.ie) Received: from walton.maths.tcd.ie by salmon.maths.tcd.ie with SMTP id ; 20 Aug 1999 23:32:36 +0100 (BST) Date: Fri, 20 Aug 1999 23:32:35 +0100 From: David Malone To: freebsd-stable@freebsd.org Subject: Re: vm_fault: pager read error on NFS filesystems. Message-ID: <19990820233235.A21737@walton.maths.tcd.ie> References: <199908171256.aa44534@salmon.maths.tcd.ie> <19990820201827.A22891@lanczos.maths.tcd.ie> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95.6i In-Reply-To: <19990820201827.A22891@lanczos.maths.tcd.ie>; from David Malone on Fri, Aug 20, 1999 at 08:18:27PM +0100 Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Fri, Aug 20, 1999 at 08:18:27PM +0100, David Malone wrote: Some experimentation produced the following results. I created an executable and then either truncated or removed it on the NFS server while is was running. If you catch the signal you are sent you get a different effect (equivelent of a double fault I guess). 3.2-STABLE, as of about 3 weeks ago. ==================================== truncate Panic (it was trying to dump a core for the process). remove vm_pager error and sigfault. catch sig + remove vm_pager error loop - may be killed by kill -9. 4.0-CURRENT, also about 3 weeks ago. ==================================== truncate process stuck in vompar while handling the pagefault. remove vm_pager error and sigfault. catch sig + remove vm_pager error loop - process can't be killed. I tried quickly on a Redhat 6 box, catching the signal and changeing the execuatble results in the process spinning and also being unkillable. I still haven't managed to get init stuck in vmopar - it isn't entirely clear to me why it would be interested in the processes text at all. David. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message