From owner-freebsd-current Wed Mar 8 15:35:53 1995 Return-Path: current-owner Received: (from majordom@localhost) by freefall.cdrom.com (8.6.10/8.6.6) id PAA26405 for current-outgoing; Wed, 8 Mar 1995 15:35:53 -0800 Received: from kitten.mcs.com (Kitten.mcs.com [192.160.127.90]) by freefall.cdrom.com (8.6.10/8.6.6) with ESMTP id PAA26399 for ; Wed, 8 Mar 1995 15:35:50 -0800 Received: from mailbox.mcs.com (Mailbox.mcs.com [192.160.127.87]) by kitten.mcs.com (8.6.10/8.6.9) with SMTP id RAA14019; Wed, 8 Mar 1995 17:35:18 -0600 Received: by mailbox.mcs.com (/\==/\ Smail3.1.28.1 #28.5) id ; Wed, 8 Mar 95 17:45 CST Received: by mercury.mcs.com (/\==/\ Smail3.1.28.1 #28.5) id ; Wed, 8 Mar 95 17:34 CST Message-Id: From: fredriks@mcs.com (Lars Fredriksen) Subject: Re: Chattering better, but now "panic: freeing busy page" To: starkhome!gene@sbstark.cs.sunysb.edu (Gene Stark) Date: Wed, 8 Mar 1995 17:34:52 -0600 (CST) Cc: current@FreeBSD.org In-Reply-To: <199503080651.BAA00922@starkhome.cs.sunysb.edu> from "Gene Stark" at Mar 8, 95 01:51:54 am X-Mailer: ELM [version 2.4 PL23] Content-Type: text Content-Length: 1063 Sender: current-owner@FreeBSD.org Precedence: bulk Gene Stark writes: > > The chattering problem seems to have been relieved by the latest changes, > but when I try to run make world I am still crashing during the library > install phase. The symptoms are a little different now: I get > "panic: freeing busy page" from a process running "install" trying to > exit (i.e. in the exit system call). The panic occurs when vm_map_remove() > is called at line 148 of kern_exit.c. The page in question is marked > "bmapped", and the attempt is made to free it from within > vm_object_terminate(), so I have the feeling that the object reference > counts are still not quite right yet. > > - Gene > Interesting! My machine deadlocks on trying to install the library. I have a crash dump of a simular situation, and it seems that several processes including pageout is stuck in lock_read waiting for the same lock. Lars -- ------------------------------------------------------------------- Lars Fredriksen fredriks@mcs.com (home) lars@fredriks.pr.mcs.net (home-home) fredriks@asiago.cs.wisc.edu