Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754411AbbLLUfJ (ORCPT ); Sat, 12 Dec 2015 15:35:09 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:39732 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754151AbbLLUfB (ORCPT ); Sat, 12 Dec 2015 15:35:01 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ilya Dryomov , Josh Durgin Subject: [PATCH 4.3 54/71] rbd: dont put snap_context twice in rbd_queue_workfn() Date: Sat, 12 Dec 2015 12:06:18 -0800 Message-Id: <20151212200539.423825587@linuxfoundation.org> X-Mailer: git-send-email 2.6.4 In-Reply-To: <20151212200536.761001328@linuxfoundation.org> References: <20151212200536.761001328@linuxfoundation.org> User-Agent: quilt/0.64 MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1393 Lines: 40 4.3-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ilya Dryomov commit 70b16db86f564977df074072143284aec2cb1162 upstream. Commit 4e752f0ab0e8 ("rbd: access snapshot context and mapping size safely") moved ceph_get_snap_context() out of rbd_img_request_create() and into rbd_queue_workfn(), adding a ceph_put_snap_context() to the error path in rbd_queue_workfn(). However, rbd_img_request_create() consumes a ref on snapc, so calling ceph_put_snap_context() after a successful rbd_img_request_create() leads to an extra put. Fix it. Signed-off-by: Ilya Dryomov Reviewed-by: Josh Durgin Signed-off-by: Greg Kroah-Hartman --- drivers/block/rbd.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -3444,6 +3444,7 @@ static void rbd_queue_workfn(struct work goto err_rq; } img_request->rq = rq; + snapc = NULL; /* img_request consumes a ref */ if (op_type == OBJ_OP_DISCARD) result = rbd_img_request_fill(img_request, OBJ_REQUEST_NODATA, -- 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/