From owner-freebsd-current@FreeBSD.ORG Sun Oct 13 16:06:06 2013 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id DDD36975 for ; Sun, 13 Oct 2013 16:06:06 +0000 (UTC) (envelope-from lists@eitanadler.com) Received: from mail-qa0-x233.google.com (mail-qa0-x233.google.com [IPv6:2607:f8b0:400d:c00::233]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 9F7F02986 for ; Sun, 13 Oct 2013 16:06:06 +0000 (UTC) Received: by mail-qa0-f51.google.com with SMTP id ii20so1880425qab.10 for ; Sun, 13 Oct 2013 09:06:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=eitanadler.com; s=0xdeadbeef; h=mime-version:from:date:message-id:subject:to:content-type; bh=7U/TgrAYXJBJbXZs61FOgiKy5cUr32X/gET2ZVW1QPs=; b=d7556InqD66soilxws1sxq2Mhk7FQGdsJKrb2+HoQ7alLItzO/uYZaQyYdm2R5bx7j GTV1JmQgck8NZX/B4SylFXAY9fnW5j1YmIFTpqMAsUkhIbYyRFdugu5Blg6Qw8xDHAxP zvw3QM1wUjYpkr0ovNrc48mG925lB/WuPArhw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:from:date:message-id:subject:to :content-type; bh=7U/TgrAYXJBJbXZs61FOgiKy5cUr32X/gET2ZVW1QPs=; b=ZjwFUXdLov+9/0qX5ZfD4Zjt2v+GvC2wiF/SANoFEeLMkV10FyOTHD+nc+zSlJymru a5hG5X8dHmWU6VMpcka0RY2aWgprGoKm+tHZzryPk6/Wy8LU1auZfm0I6P3ZfAU3luYH Q7dWJIkhpM9fzuS53z7MVOdSrR72myBJXGDFcmVZi5sQldMPfDfCrkJwUl5Q3/nofDf5 kTPhiZ95QZRxttGcvOgKx/qGzXdOAnpkdnY/SriV3RxfHvf6xMrWjxrqv+Kx4qBJQqGc HiaUSGNpq73qB5DmNctDLsG4Rt4DN9bBkqQEXDUv5JzVNw4jGcQCi1NymzZ3RDv0fyPp tQZw== X-Gm-Message-State: ALoCoQmvegJ2JMoeCS0iOkr3KX/Sw7Dyht0xthx7fJkr9idUwoLNYO/KvFKKsn1owc8zh07bCupc X-Received: by 10.224.88.70 with SMTP id z6mr1439802qal.116.1381680365768; Sun, 13 Oct 2013 09:06:05 -0700 (PDT) MIME-Version: 1.0 Received: by 10.96.63.101 with HTTP; Sun, 13 Oct 2013 09:05:35 -0700 (PDT) From: Eitan Adler Date: Sun, 13 Oct 2013 12:05:35 -0400 Message-ID: Subject: devfs, zfs LoR To: freebsd-current Current Content-Type: text/plain; charset=UTF-8 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.14 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: Sun, 13 Oct 2013 16:06:06 -0000 Hi, Is this real LoR or is it known to be invalid? lock order reversal: 1st 0xfffff800323725f0 zfs (zfs) @ /usr/src/sys/kern/vfs_mount.c:1237 2nd 0xfffff8010e9cdb78 syncer (syncer) @ /usr/src/sys/kern/vfs_subr.c:2210 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0231f8a460 kdb_backtrace() at kdb_backtrace+0x39/frame 0xfffffe0231f8a510 witness_checkorder() at witness_checkorder+0xd23/frame 0xfffffe0231f8a5a0 __lockmgr_args() at __lockmgr_args+0x6f2/frame 0xfffffe0231f8a6d0 vop_stdlock() at vop_stdlock+0x3c/frame 0xfffffe0231f8a6f0 VOP_LOCK1_APV() at VOP_LOCK1_APV+0xf5/frame 0xfffffe0231f8a720 _vn_lock() at _vn_lock+0xab/frame 0xfffffe0231f8a790 vputx() at vputx+0x208/frame 0xfffffe0231f8a7f0 dounmount() at dounmount+0x327/frame 0xfffffe0231f8a870 sys_unmount() at sys_unmount+0x356/frame 0xfffffe0231f8a9a0 amd64_syscall() at amd64_syscall+0x265/frame 0xfffffe0231f8aab0 Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe0231f8aab0 --- syscall (22, FreeBSD ELF64, sys_unmount), rip = 0x80088a63a, rsp = 0x7fffffffd148, rbp = 0x7fffffffd260 --- -- Eitan Adler