From nobody Fri Sep 5 20:11:09 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5B39DC32772 for ; Tue, 23 Aug 2022 11:49:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1358389AbiHWLtd (ORCPT ); Tue, 23 Aug 2022 07:49:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52420 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1358368AbiHWLry (ORCPT ); Tue, 23 Aug 2022 07:47:54 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 49F56D2900; Tue, 23 Aug 2022 02:30:41 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 82C5EB81B1F; Tue, 23 Aug 2022 09:30:34 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BE104C433C1; Tue, 23 Aug 2022 09:30:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1661247033; bh=4g35WAg052vHuZSfWEdDgYPobHSETza8tCzS0GKZIpk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Gmt1H5jcL/YvNbjiRa5RQ8BwOderiKLkuwmAduchZ1BJwjHis9ak2L4MM9i2DrBZJ MSL6vpA+G/dyZxH3smUiVKChWuXj630WFejTGg83ivsfj8zJcZOCiWEPHJiNKXfFdx 4Hw03Irl2GmcYUNCgB+IoGkuMDhH+KEC40HWPuNo= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Mikulas Patocka , Mike Snitzer Subject: [PATCH 5.4 267/389] dm raid: fix address sanitizer warning in raid_resume Date: Tue, 23 Aug 2022 10:25:45 +0200 Message-Id: <20220823080126.722700015@linuxfoundation.org> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220823080115.331990024@linuxfoundation.org> References: <20220823080115.331990024@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Mikulas Patocka commit 7dad24db59d2d2803576f2e3645728866a056dab upstream. There is a KASAN warning in raid_resume when running the lvm test lvconvert-raid.sh. The reason for the warning is that mddev->raid_disks is greater than rs->raid_disks, so the loop touches one entry beyond the allocated length. Cc: stable@vger.kernel.org Signed-off-by: Mikulas Patocka Signed-off-by: Mike Snitzer Signed-off-by: Greg Kroah-Hartman --- drivers/md/dm-raid.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/md/dm-raid.c +++ b/drivers/md/dm-raid.c @@ -3808,7 +3808,7 @@ static void attempt_restore_of_faulty_de =20 memset(cleared_failed_devices, 0, sizeof(cleared_failed_devices)); =20 - for (i =3D 0; i < mddev->raid_disks; i++) { + for (i =3D 0; i < rs->raid_disks; i++) { r =3D &rs->dev[i].rdev; /* HM FIXME: enhance journal device recovery processing */ if (test_bit(Journal, &r->flags))