From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3636DC10F0E for ; Thu, 18 Apr 2019 18:07:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EF440218A1 for ; Thu, 18 Apr 2019 18:07:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1555610876; bh=SubnmXVTigIc6qg8VmGuLz4RGuw8kx6X90Rjes1mBVU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=d0jsbNkAaPPiEIKquQee/75fgllaH9Nn3g5UO23KOLqS1x72mjjrFWpWVlpj7Qwu7 WqpR0OHKJEBsqMoevN4nd3vnmcnzJKUFZz1pzmKWkvzKSgDPyi2yXvSgsvN7RXwsy8 +HLauJPojb/rbchXI0Xewbn5je+LVskNtgEsy+og= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391690AbfDRSHy (ORCPT ); Thu, 18 Apr 2019 14:07:54 -0400 Received: from mail.kernel.org ([198.145.29.99]:38818 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391674AbfDRSHv (ORCPT ); Thu, 18 Apr 2019 14:07:51 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7A765218CD; Thu, 18 Apr 2019 18:07:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1555610871; bh=SubnmXVTigIc6qg8VmGuLz4RGuw8kx6X90Rjes1mBVU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=U881gsNOKg1DpqvZkEtQKsPfO0NQ4RoHr214TXRCSQsgM6ms4fr42AafvpY9fYT8V O7Cogl5TimNeYcO3kwQwGrJkJewdoTc3qBWp1h4qst+0sLc4EJi2thmKbWmgpaP/JB 6Vj83JGBZDK6dHElZ3NiYIrfh1vy47JA/tk+LzLI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Lukas Czerner , Theodore Tso , Sasha Levin Subject: [PATCH 4.9 03/50] ext4: add missing brelse() in add_new_gdb_meta_bg() Date: Thu, 18 Apr 2019 19:57:14 +0200 Message-Id: <20190418160423.140134259@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190418160422.455656724@linuxfoundation.org> References: <20190418160422.455656724@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org [ Upstream commit d64264d6218e6892edd832dc3a5a5857c2856c53 ] Currently in add_new_gdb_meta_bg() there is a missing brelse of gdb_bh in case ext4_journal_get_write_access() fails. Additionally kvfree() is missing in the same error path. Fix it by moving the ext4_journal_get_write_access() before the ext4 sb update as Ted suggested and release n_group_desc and gdb_bh in case it fails. Fixes: 61a9c11e5e7a ("ext4: add missing brelse() add_new_gdb_meta_bg()'s error path") Signed-off-by: Lukas Czerner Signed-off-by: Theodore Ts'o Signed-off-by: Sasha Levin --- fs/ext4/resize.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c index 67b359629a66..e16fb545d441 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -907,11 +907,18 @@ static int add_new_gdb_meta_bg(struct super_block *sb, memcpy(n_group_desc, o_group_desc, EXT4_SB(sb)->s_gdb_count * sizeof(struct buffer_head *)); n_group_desc[gdb_num] = gdb_bh; + + BUFFER_TRACE(gdb_bh, "get_write_access"); + err = ext4_journal_get_write_access(handle, gdb_bh); + if (err) { + kvfree(n_group_desc); + brelse(gdb_bh); + return err; + } + EXT4_SB(sb)->s_group_desc = n_group_desc; EXT4_SB(sb)->s_gdb_count++; kvfree(o_group_desc); - BUFFER_TRACE(gdb_bh, "get_write_access"); - err = ext4_journal_get_write_access(handle, gdb_bh); return err; } -- 2.19.1