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=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 8631DC433E7 for ; Sun, 18 Oct 2020 19:53:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 49B3222263 for ; Sun, 18 Oct 2020 19:53:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603050833; bh=s0/RFL6KuD/rXT5ExrOUu6B75yi54Z7D0EtZWLZhuRQ=; h=From:To:Cc:Subject:Date:List-ID:From; b=Oaag65lY/1D5yb4Y3T/xjAbcMUuP1Ey74D97iDBFEpkzGSbJuXcxqmZR774J516y9 CD6FudtC+gsG+YZITr/2gRKd/MDHkoj2BUynwWMZ1iLi0w2rkvnu9LHIUhLKuXhtft pBIfLR1+KpKhY6I/JCxI73/Q0RMdv6LI+vuXDc2Q= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728919AbgJRTUc (ORCPT ); Sun, 18 Oct 2020 15:20:32 -0400 Received: from mail.kernel.org ([198.145.29.99]:60160 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728874AbgJRTU3 (ORCPT ); Sun, 18 Oct 2020 15:20:29 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D190A222B9; Sun, 18 Oct 2020 19:20:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603048828; bh=s0/RFL6KuD/rXT5ExrOUu6B75yi54Z7D0EtZWLZhuRQ=; h=From:To:Cc:Subject:Date:From; b=ZuA/fpWwkuWQaNlCIR2zcmfV33rbs/qU7joBz1NzPPnYaqkHkdIMVxqiPiKZV9OlF BT8ZDm2mRLFswAzJ3BQG96gVViLDU4hNf32QdCJLJk0o8v0Lr+K4kC/xoKspBkuWeY YO1vLd3M3niHwyXcA5rxlMR5rs17+x2DMxH7vE1A= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Zhao Heming , Guoqing Jiang , Song Liu , Sasha Levin , linux-raid@vger.kernel.org Subject: [PATCH AUTOSEL 5.8 001/101] md/bitmap: fix memory leak of temporary bitmap Date: Sun, 18 Oct 2020 15:18:46 -0400 Message-Id: <20201018192026.4053674-1-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Zhao Heming [ Upstream commit 1383b347a8ae4a69c04ae3746e6cb5c8d38e2585 ] Callers of get_bitmap_from_slot() are responsible to free the bitmap. Suggested-by: Guoqing Jiang Signed-off-by: Zhao Heming Signed-off-by: Song Liu Signed-off-by: Sasha Levin --- drivers/md/md-bitmap.c | 3 ++- drivers/md/md-cluster.c | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c index 95a5f3757fa30..19b2601be3c5e 100644 --- a/drivers/md/md-bitmap.c +++ b/drivers/md/md-bitmap.c @@ -1949,6 +1949,7 @@ int md_bitmap_load(struct mddev *mddev) } EXPORT_SYMBOL_GPL(md_bitmap_load); +/* caller need to free returned bitmap with md_bitmap_free() */ struct bitmap *get_bitmap_from_slot(struct mddev *mddev, int slot) { int rv = 0; @@ -2012,6 +2013,7 @@ int md_bitmap_copy_from_slot(struct mddev *mddev, int slot, md_bitmap_unplug(mddev->bitmap); *low = lo; *high = hi; + md_bitmap_free(bitmap); return rv; } @@ -2615,4 +2617,3 @@ struct attribute_group md_bitmap_group = { .name = "bitmap", .attrs = md_bitmap_attrs, }; - diff --git a/drivers/md/md-cluster.c b/drivers/md/md-cluster.c index d50737ec40394..afbbc552c3275 100644 --- a/drivers/md/md-cluster.c +++ b/drivers/md/md-cluster.c @@ -1166,6 +1166,7 @@ static int resize_bitmaps(struct mddev *mddev, sector_t newsize, sector_t oldsiz * can't resize bitmap */ goto out; + md_bitmap_free(bitmap); } return 0; -- 2.25.1