From owner-svn-src-stable-10@freebsd.org Wed Jul 13 10:10:06 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 8F7EFB93519; Wed, 13 Jul 2016 10:10:06 +0000 (UTC) (envelope-from avg@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 416CD1AE4; Wed, 13 Jul 2016 10:10:06 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id u6DAA5Tm004330; Wed, 13 Jul 2016 10:10:05 GMT (envelope-from avg@FreeBSD.org) Received: (from avg@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id u6DAA5Bj004328; Wed, 13 Jul 2016 10:10:05 GMT (envelope-from avg@FreeBSD.org) Message-Id: <201607131010.u6DAA5Bj004328@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: avg set sender to avg@FreeBSD.org using -f From: Andriy Gapon Date: Wed, 13 Jul 2016 10:10:05 +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: r302746 - in stable/10/sys/cddl: compat/opensolaris/kern 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: 2.1.22 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, 13 Jul 2016 10:10:06 -0000 Author: avg Date: Wed Jul 13 10:10:05 2016 New Revision: 302746 URL: https://svnweb.freebsd.org/changeset/base/302746 Log: MFC r299940: fix a vnode reference leak caused by illumos compat traverse() Modified: stable/10/sys/cddl/compat/opensolaris/kern/opensolaris_lookup.c stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/cddl/compat/opensolaris/kern/opensolaris_lookup.c ============================================================================== --- stable/10/sys/cddl/compat/opensolaris/kern/opensolaris_lookup.c Wed Jul 13 10:06:17 2016 (r302745) +++ stable/10/sys/cddl/compat/opensolaris/kern/opensolaris_lookup.c Wed Jul 13 10:10:05 2016 (r302746) @@ -89,13 +89,14 @@ traverse(vnode_t **cvpp, int lktype) if (vfsp == NULL) break; error = vfs_busy(vfsp, 0); + /* * tvp is NULL for *cvpp vnode, which we can't unlock. - * At least some callers expect the reference to be - * maintained to the original *cvpp */ if (tvp != NULL) vput(cvp); + else + vrele(cvp); if (error) return (error); Modified: stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c ============================================================================== --- stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c Wed Jul 13 10:06:17 2016 (r302745) +++ stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c Wed Jul 13 10:10:05 2016 (r302746) @@ -1044,7 +1044,6 @@ zfsctl_snapdir_lookup(ap) VN_HOLD(*vpp); err = traverse(vpp, LK_EXCLUSIVE | LK_RETRY); if (err != 0) { - VN_RELE(*vpp); *vpp = NULL; } else if (*vpp == sep->se_root) { /* @@ -1675,16 +1674,15 @@ zfsctl_lookup_objset(vfs_t *vfsp, uint64 */ error = traverse(&vp, LK_SHARED | LK_RETRY); if (error == 0) { - if (vp == sep->se_root) + if (vp == sep->se_root) { + VN_RELE(vp); /* release covered vp */ error = SET_ERROR(EINVAL); - else + } else { *zfsvfsp = VTOZ(vp)->z_zfsvfs; + VN_URELE(vp); /* put snapshot's root vp */ + } } mutex_exit(&sdp->sd_lock); - if (error == 0) - VN_URELE(vp); - else - VN_RELE(vp); } else { error = SET_ERROR(EINVAL); mutex_exit(&sdp->sd_lock);