From owner-svn-src-stable-10@freebsd.org Wed Sep 14 09:13:18 2016 Return-Path: Delivered-To: svn-src-stable-10@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id D8B70BDAF9B; Wed, 14 Sep 2016 09:13:18 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id AB08B149; Wed, 14 Sep 2016 09:13:18 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id u8E9DHpZ038061; Wed, 14 Sep 2016 09:13:17 GMT (envelope-from mav@FreeBSD.org) Received: (from mav@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id u8E9DHPH038060; Wed, 14 Sep 2016 09:13:17 GMT (envelope-from mav@FreeBSD.org) Message-Id: <201609140913.u8E9DHPH038060@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: mav set sender to mav@FreeBSD.org using -f From: Alexander Motin Date: Wed, 14 Sep 2016 09:13:17 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r305800 - stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs X-SVN-Group: stable-10 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable-10@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: SVN commit messages for only the 10-stable src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 14 Sep 2016 09:13:18 -0000 Author: mav Date: Wed Sep 14 09:13:17 2016 New Revision: 305800 URL: https://svnweb.freebsd.org/changeset/base/305800 Log: MFC r305123: Fix kernel panic when inheriting properties without default. There are two writable hidden properties "iscsioptions" and "stmf_sbd_lu", that have no default string value. Attempt to unset them or replicate caused kernel panic. This simple bandaid seems fixes the problem nicely. Modified: stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_prop.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_prop.c ============================================================================== --- stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_prop.c Wed Sep 14 09:12:49 2016 (r305799) +++ stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_prop.c Wed Sep 14 09:13:17 2016 (r305800) @@ -54,6 +54,8 @@ dodefault(zfs_prop_t prop, int intsz, in return (SET_ERROR(ENOENT)); if (zfs_prop_get_type(prop) == PROP_TYPE_STRING) { + if (zfs_prop_default_string(prop) == NULL) + return (SET_ERROR(ENOENT)); if (intsz != 1) return (SET_ERROR(EOVERFLOW)); (void) strncpy(buf, zfs_prop_default_string(prop),