From owner-freebsd-current@FreeBSD.ORG Wed Jun 9 07:59:48 2010 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 39DEF1065670 for ; Wed, 9 Jun 2010 07:59:48 +0000 (UTC) (envelope-from yaneurabeya@gmail.com) Received: from mail-pv0-f182.google.com (mail-pv0-f182.google.com [74.125.83.182]) by mx1.freebsd.org (Postfix) with ESMTP id 0A16A8FC16 for ; Wed, 9 Jun 2010 07:59:47 +0000 (UTC) Received: by pvb32 with SMTP id 32so339652pvb.13 for ; Wed, 09 Jun 2010 00:59:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:subject:mime-version :content-type:from:in-reply-to:date:cc:content-transfer-encoding :message-id:references:to:x-mailer; bh=cIBzLu0+k3MQg4tvx3yeNvc8XfXHUazuMKfm+9+jygo=; b=YpdpeGPgB9P9UezW6tsHWb1orPlC8RigU47GtcuGwULfYOwH6qBB5AhpfaPIqL9pcE wxqHjNHhVmfQFDyXdUOQW/KIYDnSF5wS24ByhKS9cJox9ueB0Y/p3i3/I5dwl5Z1r3Gm /evIkJS34+Vdu2j72illHCldm71a8XPBmk+CU= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=subject:mime-version:content-type:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to:x-mailer; b=ncWZhNkywch8Mrpj1ggNY0u1dW2Q3hHSl1aSkUcukZ+u2YjBMVRE1tUwbPNzuvZdII wcFnLBRZUaGvplnq0SWvgExtfDGSZI7AFHNXYQmBRRHMGMyQav/ZAzrazZH7DgSb2Wo5 1+8y60oFOpR3mSQJDVGPzEQoi/7p7i5q/aVHY= Received: by 10.114.187.17 with SMTP id k17mr2259646waf.31.1276070387290; Wed, 09 Jun 2010 00:59:47 -0700 (PDT) Received: from [192.168.0.203] (deviant.freebsdgirl.com [173.8.183.73]) by mx.google.com with ESMTPS id r20sm61130682wam.17.2010.06.09.00.59.45 (version=TLSv1/SSLv3 cipher=RC4-MD5); Wed, 09 Jun 2010 00:59:46 -0700 (PDT) Mime-Version: 1.0 (Apple Message framework v1078) Content-Type: text/plain; charset=us-ascii From: Garrett Cooper In-Reply-To: <20100609075152.GC72453@cicely7.cicely.de> Date: Wed, 9 Jun 2010 00:59:43 -0700 Content-Transfer-Encoding: quoted-printable Message-Id: References: <20100609075152.GC72453@cicely7.cicely.de> To: ticso@cicely.de X-Mailer: Apple Mail (2.1078) X-Mailman-Approved-At: Wed, 09 Jun 2010 11:14:31 +0000 Cc: Bernd Walter , freebsd-current@freebsd.org Subject: Re: lock order reversal bufwait/dirhash X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Jun 2010 07:59:48 -0000 On Jun 9, 2010, at 12:51 AM, Bernd Walter wrote: > Got this during installworld (source on NFS, destination UFS on = CF-card) > Source is current checked out yesterday. >=20 > lock order reversal: > 1st 0xc28b85b4 bufwait (bufwait) @ = /data/builder/c13-2010-06-07/head/sys/kern/vfs_bio.c:2575 > 2nd 0xc343f000 dirhash (dirhash) @ = /data/builder/c13-2010-06-07/head/sys/ufs/ufs/ufs_dirhash.c:283 > KDB: stack backtrace: > = db_trace_self_wrapper(c0905b2b,c0d02c56,c2d3d030,c2d40500,ca657890,...) = at db_trace_self_wrapper+0x26 > _witness_debugger(c0d02c56,c343f000,c0d279c2,c2d40500,c0d2762e,...) at = _witness_debugger+0x25 > witness_checkorder(c343f000,9,c0d2762e,11b,0,...) at = witness_checkorder+0x73c > _sx_xlock(c343f000,0,c0d2762e,11b,c3a07e80,...) at _sx_xlock+0x51 > ufsdirhash_acquire(e,1828,ca6579f0,c3a07e80,cb2bd814,...) at = ufsdirhash_acquire+0x35 > ufsdirhash_add(c3a07e80,ca6579f0,1828,ca657950,ca657954,...) at = ufsdirhash_add+0x1f > ufs_direnter(c3944dd0,c423e220,ca6579f0,ca657bd0,c292ccb0,...) at = ufs_direnter+0x894 > ufs_mkdir(ca657bf8,ca657c0c,2,0,0,...) at ufs_mkdir+0x51c > VOP_MKDIR_APV(c0e0f4c0,ca657bf8,ca657bd0,ca657b3c,2,...) at = VOP_MKDIR_APV+0x8e > kern_mkdirat(c39264e0,ffffff9c,80513e0,0,1c0,...) at = kern_mkdirat+0x240 > kern_mkdir(c39264e0,80513e0,0,1c0,ca657c7c,...) at kern_mkdir+0x2f > mkdir(c39264e0,ca657cec,ca657d28,c0d014f7,0,...) at mkdir+0x27 > syscallenter(c39264e0,ca657ce4,ca657ce4,0,c0e630c0,...) at = syscallenter+0xc6 > syscall(ca657d28) at syscall+0x3a > Xint0x80_syscall() at Xint0x80_syscall+0x20 > --- syscall (136, FreeBSD ELF32, mkdir), eip =3D 0x281817cf, esp =3D = 0xbfbfe30c, ebp =3D 0xbfbfe398 --- I've seen this for a while, but it was definitely present on the kernel = that I tried working off of that was from Saturday. Thanks, -Garrett=