Date: Sun, 6 Jan 2008 23:54:38 +0100 (CET) From: Jille Timmermans <jille@quis.cx> To: FreeBSD-gnats-submit@FreeBSD.org Cc: Ed Schouten <ed@fxq.nl> Subject: kern/119423: Kernel panic (page fault) with devfs rules Message-ID: <200801062254.m06Msclv000975@blackbox.quis.cx> Resent-Message-ID: <200801071550.m07Fo1pc060666@freefall.freebsd.org>
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>Number: 119423 >Category: kern >Synopsis: Kernel panic (page fault) with devfs rules >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon Jan 07 15:50:01 UTC 2008 >Closed-Date: >Last-Modified: >Originator: Jille Timmermans >Release: FreeBSD 6.3-PRERELEASE i386 / FreeBSD 6.2-RELEASE-p4 i386 >Organization: None >Environment: FreeBSD 6.3-PRERELEASE i386 / FreeBSD 6.2-RELEASE-p4 i386 System: FreeBSD blackbox.quis.cx 6.3-PRERELEASE FreeBSD 6.3-PRERELEASE #1: Sun Jan 6 23:24:15 CET 2008 root@blackbox.quis.cx:/usr/obj/usr/src/sys/BLACKBOX i386 and FreeBSD istud.quis.cx 6.2-RELEASE-p4 FreeBSD 6.2-RELEASE #0: Sat May 12 16:41:58 CEST 2007 root@istud.quis.cx:/usr/obj/usr/src/sys/ISTUD i386 >Description: A kernel panic (page fault) occurs when trying to add rules to a devfs mount. I can give you kernel dumps and backtraces if needed. >How-To-Repeat: mkdir dev mount -t devfs devfs dev devfs -m dev ruleset 50 devfs -m dev rule add type disk hide devfs -m dev rule applyset >Fix: In /usr/src/sys/fs/devfs/devfs_rule.c:546 if (dev == NULL || Changed into: if (dev == NULL || dev->si_devsw == NULL || >Release-Note: >Audit-Trail: >Unformatted:
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