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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D3B55C32771 for ; Fri, 19 Aug 2022 16:52:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1354067AbiHSQv6 (ORCPT ); Fri, 19 Aug 2022 12:51:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37868 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1354044AbiHSQuQ (ORCPT ); Fri, 19 Aug 2022 12:50:16 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5F21CD44; Fri, 19 Aug 2022 09:13:23 -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 dfw.source.kernel.org (Postfix) with ESMTPS id D0CF0618BB; Fri, 19 Aug 2022 16:12:27 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DA62BC433D7; Fri, 19 Aug 2022 16:12:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1660925547; bh=ckohcA+yLadJmCHut3jj5GmAulVKJf3WkhvytL8MJkA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tkbtsv97Elp5LRd5gjNBQLayVrrFgEhmASk4a1fYgpTSgrfhEpqRaCM8UYQyD+PtR UgGXzVPZI1lGDlNj1Ym7Sy2xDkQzJNOxoXTjJ62qW1DM1CScuUuzu5v5qLSO3AVQNC sd//j498jH8PFfGvh2gaWUDOPzluaOY7Ch8gusVo= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Mikulas Patocka , Mike Snitzer Subject: [PATCH 5.10 525/545] dm raid: fix address sanitizer warning in raid_resume Date: Fri, 19 Aug 2022 17:44:55 +0200 Message-Id: <20220819153853.049218454@linuxfoundation.org> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220819153829.135562864@linuxfoundation.org> References: <20220819153829.135562864@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 @@ -3794,7 +3794,7 @@ static void attempt_restore_of_faulty_de memset(cleared_failed_devices, 0, sizeof(cleared_failed_devices)); - for (i = 0; i < mddev->raid_disks; i++) { + for (i = 0; i < rs->raid_disks; i++) { r = &rs->dev[i].rdev; /* HM FIXME: enhance journal device recovery processing */ if (test_bit(Journal, &r->flags))