From owner-svn-src-stable-8@FreeBSD.ORG Thu Oct 20 21:48:10 2011 Return-Path: Delivered-To: svn-src-stable-8@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 35FED106564A; Thu, 20 Oct 2011 21:48:10 +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 243E28FC14; Thu, 20 Oct 2011 21:48:10 +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 p9KLmA16093101; Thu, 20 Oct 2011 21:48:10 GMT (envelope-from delphij@svn.freebsd.org) Received: (from delphij@localhost) by svn.freebsd.org (8.14.4/8.14.4/Submit) id p9KLmAnp093099; Thu, 20 Oct 2011 21:48:10 GMT (envelope-from delphij@svn.freebsd.org) Message-Id: <201110202148.p9KLmAnp093099@svn.freebsd.org> From: Xin LI Date: Thu, 20 Oct 2011 21:48:10 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org X-SVN-Group: stable-8 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Subject: svn commit: r226588 - stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs X-BeenThere: svn-src-stable-8@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SVN commit messages for only the 8-stable src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 20 Oct 2011 21:48:10 -0000 Author: delphij Date: Thu Oct 20 21:48:09 2011 New Revision: 226588 URL: http://svn.freebsd.org/changeset/base/226588 Log: MFC r226483: 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 Modified: stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sa.c Directory Properties: stable/8/sys/ (props changed) stable/8/sys/cddl/contrib/opensolaris/ (props changed) Modified: stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sa.c ============================================================================== --- stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sa.c Thu Oct 20 21:15:43 2011 (r226587) +++ stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sa.c Thu Oct 20 21:48:09 2011 (r226588) @@ -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; }