From patchwork Wed Aug 24 04:13:00 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qu Wenruo X-Patchwork-Id: 9296821 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 0F100607F0 for ; Wed, 24 Aug 2016 04:13:13 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EEDEE28DEE for ; Wed, 24 Aug 2016 04:13:12 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E260828DF8; Wed, 24 Aug 2016 04:13:12 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 54BE528DEE for ; Wed, 24 Aug 2016 04:13:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751568AbcHXENI (ORCPT ); Wed, 24 Aug 2016 00:13:08 -0400 Received: from cn.fujitsu.com ([59.151.112.132]:64082 "EHLO heian.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1750980AbcHXENH (ORCPT ); Wed, 24 Aug 2016 00:13:07 -0400 X-IronPort-AV: E=Sophos;i="5.22,518,1449504000"; d="scan'208";a="10217290" Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 24 Aug 2016 12:13:04 +0800 Received: from G08CNEXCHPEKD02.g08.fujitsu.local (unknown [10.167.33.83]) by cn.fujitsu.com (Postfix) with ESMTP id A707D42EB228; Wed, 24 Aug 2016 12:13:02 +0800 (CST) Received: from localhost.localdomain (10.167.226.34) by G08CNEXCHPEKD02.g08.fujitsu.local (10.167.33.89) with Microsoft SMTP Server (TLS) id 14.3.279.2; Wed, 24 Aug 2016 12:13:02 +0800 From: Qu Wenruo To: CC: Liu Bo Subject: [PATCH] btrfs: Fix extent map leak in find_first_block_group Date: Wed, 24 Aug 2016 12:13:00 +0800 Message-ID: <20160824041300.20072-1-quwenruo@cn.fujitsu.com> X-Mailer: git-send-email 2.9.3 MIME-Version: 1.0 X-Originating-IP: [10.167.226.34] X-yoursite-MailScanner-ID: A707D42EB228.AE622 X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: quwenruo@cn.fujitsu.com Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The following commit introduced the extent map leak: commit 6fb37b756acce6d6e045f79c3764206033f617b4 Author: Liu Bo Date: Wed Jun 22 18:31:27 2016 -0700 Btrfs: check inconsistence between chunk and block group This leads to slab warning at rmmod time. Cc: Liu Bo Signed-off-by: Qu Wenruo --- fs/btrfs/extent-tree.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index c2b81b0..e621823 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -9905,6 +9905,7 @@ static int find_first_block_group(struct btrfs_root *root, ret = -ENOENT; } else { ret = 0; + free_extent_map(em); } goto out; }