From owner-svn-src-all@freebsd.org Sun Aug 9 19:28:32 2015 Return-Path: Delivered-To: svn-src-all@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 6B95B99DD5C; Sun, 9 Aug 2015 19:28:32 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2001:1900:2254:2068::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 5C74BF12; Sun, 9 Aug 2015 19:28:32 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.70]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id t79JSWMG094072; Sun, 9 Aug 2015 19:28:32 GMT (envelope-from mav@FreeBSD.org) Received: (from mav@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id t79JSWUE094071; Sun, 9 Aug 2015 19:28:32 GMT (envelope-from mav@FreeBSD.org) Message-Id: <201508091928.t79JSWUE094071@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: mav set sender to mav@FreeBSD.org using -f From: Alexander Motin Date: Sun, 9 Aug 2015 19:28:32 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-vendor@freebsd.org Subject: svn commit: r286542 - vendor-sys/illumos/dist/uts/common/fs/zfs X-SVN-Group: vendor-sys MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.20 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: Sun, 09 Aug 2015 19:28:32 -0000 Author: mav Date: Sun Aug 9 19:28:31 2015 New Revision: 286542 URL: https://svnweb.freebsd.org/changeset/base/286542 Log: 5592 NULL pointer dereference in dsl_prop_notify_all_cb() Reviewed by: Dan McDonald Reviewed by: Matthew Ahrens Reviewed by: George Wilson Reviewed by: Will Andrews Approved by: Robert Mustacchi illumos/illumos-gate@9d47dec0481d8cd53b2c1053c96bfa3f78357d6a Modified: vendor-sys/illumos/dist/uts/common/fs/zfs/dsl_dataset.c Modified: vendor-sys/illumos/dist/uts/common/fs/zfs/dsl_dataset.c ============================================================================== --- vendor-sys/illumos/dist/uts/common/fs/zfs/dsl_dataset.c Sun Aug 9 19:26:21 2015 (r286541) +++ vendor-sys/illumos/dist/uts/common/fs/zfs/dsl_dataset.c Sun Aug 9 19:28:31 2015 (r286542) @@ -363,8 +363,19 @@ dsl_dataset_snap_remove(dsl_dataset_t *d boolean_t dsl_dataset_try_add_ref(dsl_pool_t *dp, dsl_dataset_t *ds, void *tag) { - return (dmu_buf_try_add_ref(ds->ds_dbuf, dp->dp_meta_objset, - ds->ds_object, DMU_BONUS_BLKID, tag)); + dmu_buf_t *dbuf = ds->ds_dbuf; + boolean_t result = B_FALSE; + + if (dbuf != NULL && dmu_buf_try_add_ref(dbuf, dp->dp_meta_objset, + ds->ds_object, DMU_BONUS_BLKID, tag)) { + + if (ds == dmu_buf_get_user(dbuf)) + result = B_TRUE; + else + dmu_buf_rele(dbuf, tag); + } + + return (result); } int