From owner-freebsd-bugs@FreeBSD.ORG Sun Aug 16 19:10:04 2009 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 446381065672 for ; Sun, 16 Aug 2009 19:10:04 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 1F4D78FC3F for ; Sun, 16 Aug 2009 19:10:04 +0000 (UTC) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.14.3/8.14.3) with ESMTP id n7GJA3fw089407 for ; Sun, 16 Aug 2009 19:10:03 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.3/8.14.3/Submit) id n7GJA3P5089406; Sun, 16 Aug 2009 19:10:03 GMT (envelope-from gnats) Resent-Date: Sun, 16 Aug 2009 19:10:03 GMT Resent-Message-Id: <200908161910.n7GJA3P5089406@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Nathaniel Filardo Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D8BDB106568D for ; Sun, 16 Aug 2009 19:00:54 +0000 (UTC) (envelope-from nobody@FreeBSD.org) Received: from www.freebsd.org (www.freebsd.org [IPv6:2001:4f8:fff6::21]) by mx1.freebsd.org (Postfix) with ESMTP id C85D28FC65 for ; Sun, 16 Aug 2009 19:00:54 +0000 (UTC) Received: from www.freebsd.org (localhost [127.0.0.1]) by www.freebsd.org (8.14.3/8.14.3) with ESMTP id n7GJ0sNk036961 for ; Sun, 16 Aug 2009 19:00:54 GMT (envelope-from nobody@www.freebsd.org) Received: (from nobody@localhost) by www.freebsd.org (8.14.3/8.14.3/Submit) id n7GJ0sCS036960; Sun, 16 Aug 2009 19:00:54 GMT (envelope-from nobody) Message-Id: <200908161900.n7GJ0sCS036960@www.freebsd.org> Date: Sun, 16 Aug 2009 19:00:54 GMT From: Nathaniel Filardo To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-3.1 Cc: Subject: misc/137852: LOR bufwait/dirhash X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 16 Aug 2009 19:10:04 -0000 >Number: 137852 >Category: misc >Synopsis: LOR bufwait/dirhash >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sun Aug 16 19:10:03 UTC 2009 >Closed-Date: >Last-Modified: >Originator: Nathaniel Filardo >Release: -CURRENT >Organization: >Environment: FreeBSD hydra.priv.oc.ietfng.org 8.0-BETA2 FreeBSD 8.0-BETA2 #2: Sun Aug 16 13:00:36 EDT 2009 root@hydra.priv.oc.ietfng.org:/systank/obj/systank/src/sys/NWFKERN sparc64 >Description: lock order reversal: 1st 0xea5e97f8 bufwait (bufwait) @ /systank/src/sys/kern/vfs_bio.c:2559 2nd 0xfffff8000edea400 dirhash (dirhash) @ /systank/src/sys/ufs/ufs/ufs_dirhash.c:285 KDB: stack backtrace: _witness_debugger() at _witness_debugger+0x38 witness_checkorder() at witness_checkorder+0xcf8 _sx_xlock() at _sx_xlock+0x9c ufsdirhash_acquire() at ufsdirhash_acquire+0x30 ufsdirhash_add() at ufsdirhash_add+0x4 ufs_direnter() at ufs_direnter+0x75c ufs_makeinode() at ufs_makeinode+0x4f8 ufs_create() at ufs_create+0x40 VOP_CREATE_APV() at VOP_CREATE_APV+0x108 vn_open_cred() at vn_open_cred+0x1fc vn_open() at vn_open+0x1c kern_openat() at kern_openat+0x10c kern_open() at kern_open+0x18 open() at open+0x14 syscall() at syscall+0x2f0 -- syscall (5, FreeBSD ELF64, open) %o7=0x104224 -- userland() at 0x404711a8 user trace: trap %o7=0x104224 pc 0x404711a8, sp 0x7fdffffb491 pc 0x101090, sp 0x7fdffffe2b1 pc 0x4020ad94, sp 0x7fdffffe371 done This happened even on GENERIC, so don't mind too much that uname -a says NWFKERN instead. :) Apologies if this is a duplicate; a quick search didn't find one, but it's possible I've missed. What else would be helpful? >How-To-Repeat: This is more or less guaranteed to happen eventually, and is triggered by any number of different things. csup has triggered it, the dump posted above is due to a chsh command... >Fix: >Release-Note: >Audit-Trail: >Unformatted: