From owner-svn-src-all@FreeBSD.ORG Mon Oct 17 22:23:27 2011 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 80E821065741; Mon, 17 Oct 2011 22:23:27 +0000 (UTC) (envelope-from delphij@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c]) by mx1.freebsd.org (Postfix) with ESMTP id 702938FC15; Mon, 17 Oct 2011 22:23:27 +0000 (UTC) Received: from svn.freebsd.org (localhost [127.0.0.1]) by svn.freebsd.org (8.14.4/8.14.4) with ESMTP id p9HMNRgX043140; Mon, 17 Oct 2011 22:23:27 GMT (envelope-from delphij@svn.freebsd.org) Received: (from delphij@localhost) by svn.freebsd.org (8.14.4/8.14.4/Submit) id p9HMNRF3043138; Mon, 17 Oct 2011 22:23:27 GMT (envelope-from delphij@svn.freebsd.org) Message-Id: <201110172223.p9HMNRF3043138@svn.freebsd.org> From: Xin LI Date: Mon, 17 Oct 2011 22:23:27 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Subject: svn commit: r226483 - head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 17 Oct 2011 22:23:27 -0000 Author: delphij Date: Mon Oct 17 22:23:27 2011 New Revision: 226483 URL: http://svn.freebsd.org/changeset/base/226483 Log: Fix a bug in sa_find_sizes() which could lead to panic: When calculating space needed for SA_BONUS buffers, hdrsize is always rounded up to next 8-aligned boundary. However, in two places the round up was done against sum of 'total' plus hdrsize. On the other hand, hdrsize increments by 4 each time, which means in certain conditions, we would end up returning with will_spill == 0 and (total + hdrsize) larger than full_space, leading to a failed assertion because it's invalid for dmu_set_bonus. Sponsored by: iXsystems, Inc. Reviewed by: mm MFC after: 3 days Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sa.c Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sa.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sa.c Mon Oct 17 21:31:03 2011 (r226482) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sa.c Mon Oct 17 22:23:27 2011 (r226483) @@ -605,14 +605,14 @@ sa_find_sizes(sa_os_t *sa, sa_bulk_attr_ * and spill buffer. */ if (buftype == SA_BONUS && *index == -1 && - P2ROUNDUP(*total + hdrsize, 8) > + (*total + P2ROUNDUP(hdrsize, 8)) > (full_space - sizeof (blkptr_t))) { *index = i; done = B_TRUE; } next: - if (P2ROUNDUP(*total + hdrsize, 8) > full_space && + if ((*total + P2ROUNDUP(hdrsize, 8)) > full_space && buftype == SA_BONUS) *will_spill = B_TRUE; }