From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:46910 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1422625AbbGaUDI (ORCPT ); Fri, 31 Jul 2015 16:03:08 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Trond Myklebust Subject: [PATCH 4.1 242/267] pNFS: Fix a memory leak when attempted pnfs fails Date: Fri, 31 Jul 2015 12:41:33 -0700 Message-Id: <20150731194011.041048096@linuxfoundation.org> In-Reply-To: <20150731194001.933895871@linuxfoundation.org> References: <20150731194001.933895871@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org List-ID: 4.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Trond Myklebust commit 1ca018d28d96d07788474abf66a5f3e9594841f5 upstream. pnfs_do_write() expects the call to pnfs_write_through_mds() to free the pgio header and to release the layout segment before exiting. The problem is that nfs_pgio_data_destroy() doesn't actually do this; it only frees the memory allocated by nfs_generic_pgio(). Ditto for pnfs_do_read()... Fix in both cases is to add a call to hdr->release(hdr). Signed-off-by: Trond Myklebust Signed-off-by: Greg Kroah-Hartman --- fs/nfs/pnfs.c | 2 ++ 1 file changed, 2 insertions(+) --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1865,6 +1865,7 @@ pnfs_write_through_mds(struct nfs_pageio mirror->pg_recoalesce = 1; } nfs_pgio_data_destroy(hdr); + hdr->release(hdr); } static enum pnfs_try_status @@ -1979,6 +1980,7 @@ pnfs_read_through_mds(struct nfs_pageio_ mirror->pg_recoalesce = 1; } nfs_pgio_data_destroy(hdr); + hdr->release(hdr); } /*