Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754551AbaFEFBt (ORCPT ); Thu, 5 Jun 2014 01:01:49 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:43870 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752509AbaFEEUd (ORCPT ); Thu, 5 Jun 2014 00:20:33 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, "J. Bruce Fields" Subject: [PATCH 3.4 067/214] nfsd4: remove lockowner when removing lock stateid Date: Wed, 4 Jun 2014 21:17:10 -0700 Message-Id: <20140605041648.516281124@linuxfoundation.org> X-Mailer: git-send-email 2.0.0 In-Reply-To: <20140605041639.638675216@linuxfoundation.org> References: <20140605041639.638675216@linuxfoundation.org> User-Agent: quilt/0.60-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: "J. Bruce Fields" commit a1b8ff4c97b4375d21b6d6c45d75877303f61b3b upstream. The nfsv4 state code has always assumed a one-to-one correspondance between lock stateid's and lockowners even if it appears not to in some places. We may actually change that, but for now when FREE_STATEID releases a lock stateid it also needs to release the parent lockowner. Symptoms were a subsequent LOCK crashing in find_lockowner_str when it calls same_lockowner_ino on a lockowner that unexpectedly has an empty so_stateids list. Signed-off-by: J. Bruce Fields Signed-off-by: Greg Kroah-Hartman --- fs/nfsd/nfs4state.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -3476,9 +3476,16 @@ out: static __be32 nfsd4_free_lock_stateid(struct nfs4_ol_stateid *stp) { - if (check_for_locks(stp->st_file, lockowner(stp->st_stateowner))) + struct nfs4_lockowner *lo = lockowner(stp->st_stateowner); + + if (check_for_locks(stp->st_file, lo)) return nfserr_locks_held; - release_lock_stateid(stp); + /* + * Currently there's a 1-1 lock stateid<->lockowner + * correspondance, and we have to delete the lockowner when we + * delete the lock stateid: + */ + unhash_lockowner(lo); return nfs_ok; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/