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 D24F5C4167B for ; Wed, 28 Dec 2022 16:21:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234568AbiL1QVZ (ORCPT ); Wed, 28 Dec 2022 11:21:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36972 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234528AbiL1QUy (ORCPT ); Wed, 28 Dec 2022 11:20:54 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B73A9183B2 for ; Wed, 28 Dec 2022 08:18:41 -0800 (PST) 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 54DD3B81707 for ; Wed, 28 Dec 2022 16:18:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B8E68C433EF; Wed, 28 Dec 2022 16:18:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1672244319; bh=T+ryu8MnxTP6FHzZocOI//VvbmOWAWokcXt5BNRmk0k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=zFtnPbJa9qlqP1FrwOWgygwE+1injLrcsH8CrULInczMIA+FVcHsypaNzzPyVbKCD KQ3ddLCyeDfgxdrI5RtLo8lI0ygHHfIx4RR+SAGmZw7X1DIDNO3E7ailhpDQL4RMDm jDG0vREtI6fUF5uB1qkEj2N6Bm38iOIKwaWCrLoc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Harshit Mogalapalli , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 6.1 0650/1146] scsi: scsi_debug: Fix a warning in resp_report_zones() Date: Wed, 28 Dec 2022 15:36:29 +0100 Message-Id: <20221228144347.813195876@linuxfoundation.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20221228144330.180012208@linuxfoundation.org> References: <20221228144330.180012208@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: stable@vger.kernel.org From: Harshit Mogalapalli [ Upstream commit 07f2ca139d9a7a1ba71c4c03997c8de161db2346 ] As 'alloc_len' is user controlled data, if user tries to allocate memory larger than(>=) MAX_ORDER, then kcalloc() will fail, it creates a stack trace and messes up dmesg with a warning. Add __GFP_NOWARN in order to avoid too large allocation warning. This is detected by static analysis using smatch. Fixes: 7db0e0c8190a ("scsi: scsi_debug: Fix buffer size of REPORT ZONES command") Signed-off-by: Harshit Mogalapalli Link: https://lore.kernel.org/r/20221112070612.2121535-1-harshit.m.mogalapalli@oracle.com Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/scsi_debug.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 78cfb706a4a7..20e64b7d3f7b 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -4504,7 +4504,7 @@ static int resp_report_zones(struct scsi_cmnd *scp, rep_max_zones = (alloc_len - 64) >> ilog2(RZONES_DESC_HD); - arr = kzalloc(alloc_len, GFP_ATOMIC); + arr = kzalloc(alloc_len, GFP_ATOMIC | __GFP_NOWARN); if (!arr) { mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, INSUFF_RES_ASCQ); -- 2.35.1