From owner-svn-src-stable@freebsd.org Sat May 7 00:02:29 2016 Return-Path: Delivered-To: svn-src-stable@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 7B80FB31736; Sat, 7 May 2016 00:02:29 +0000 (UTC) (envelope-from rmacklem@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 4A56C19F4; Sat, 7 May 2016 00:02:29 +0000 (UTC) (envelope-from rmacklem@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id u4702STn064379; Sat, 7 May 2016 00:02:28 GMT (envelope-from rmacklem@FreeBSD.org) Received: (from rmacklem@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id u4702S7o064378; Sat, 7 May 2016 00:02:28 GMT (envelope-from rmacklem@FreeBSD.org) Message-Id: <201605070002.u4702S7o064378@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: rmacklem set sender to rmacklem@FreeBSD.org using -f From: Rick Macklem Date: Sat, 7 May 2016 00:02:28 +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: r299208 - stable/10/sys/fs/nfsserver 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@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 07 May 2016 00:02:29 -0000 Author: rmacklem Date: Sat May 7 00:02:28 2016 New Revision: 299208 URL: https://svnweb.freebsd.org/changeset/base/299208 Log: MFC: r297869 If the VOP_SETATTR() call that saves the exclusive create verifier failed, the NFS server would leave the newly created vnode locked. This could result in a file system that would not unmount and processes wedged, waiting for the file to be unlocked. Since this VOP_SETATTR() never fails for most file systems, this bug doesn't normally manifest itself. I found it during testing of an exported GlusterFS file system, which can fail. This patch adds the vput() and changes the error to the correct NFS one. Modified: stable/10/sys/fs/nfsserver/nfs_nfsdport.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/fs/nfsserver/nfs_nfsdport.c ============================================================================== --- stable/10/sys/fs/nfsserver/nfs_nfsdport.c Fri May 6 23:55:28 2016 (r299207) +++ stable/10/sys/fs/nfsserver/nfs_nfsdport.c Sat May 7 00:02:28 2016 (r299208) @@ -794,6 +794,11 @@ nfsvno_createsub(struct nfsrv_descript * nvap->na_atime.tv_nsec = cverf[1]; error = VOP_SETATTR(ndp->ni_vp, &nvap->na_vattr, nd->nd_cred); + if (error != 0) { + vput(ndp->ni_vp); + ndp->ni_vp = NULL; + error = NFSERR_NOTSUPP; + } } } /* @@ -1422,6 +1427,11 @@ nfsvno_open(struct nfsrv_descript *nd, s nvap->na_atime.tv_nsec = cverf[1]; nd->nd_repstat = VOP_SETATTR(ndp->ni_vp, &nvap->na_vattr, cred); + if (nd->nd_repstat != 0) { + vput(ndp->ni_vp); + ndp->ni_vp = NULL; + nd->nd_repstat = NFSERR_NOTSUPP; + } } else { nfsrv_fixattr(nd, ndp->ni_vp, nvap, aclp, p, attrbitp, exp);