From patchwork Tue Dec 7 01:06:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shin'ichiro Kawasaki X-Patchwork-Id: 521857 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 565F5C433EF for ; Tue, 7 Dec 2021 01:06:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344350AbhLGBKK (ORCPT ); Mon, 6 Dec 2021 20:10:10 -0500 Received: from esa5.hgst.iphmx.com ([216.71.153.144]:30173 "EHLO esa5.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240641AbhLGBKJ (ORCPT ); Mon, 6 Dec 2021 20:10:09 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1638839199; x=1670375199; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=SbfNtO3YKArSv/48E4z1usUS4fmjGaUlyx/z3jf2EUY=; b=QI5nNgZeYkM9NkUhnx5JA3+AQaQyKBpArhUnNsEA8PTFUPj96yiGWlFl hU7FmUv06wGKZBhr5AOdW/QMT+AeTXlRXr6P4UBu/flPGjblBlF4Iak+G zrH1rfphD4lqJQD/B/eLc8Cj49qZhILFV0h3b1pHam0bQ7QbK2w9udn1/ fNI0Vi5aPeZjSjVoGFnrJSm+5Q9u7GBV3+VVIB9YvqfRnQeoM5rAg0jYS EJ7pR5pzv9XWMpOhb2VT8HT7kubpB8rQybe8WPhUYHpK0dgpa3JKlI6ET RBJxxdyzod6XWdVumVPGyPfU46NCMb6mY+VxuUCVRjBKnYQ4RTWZzyDYw Q==; X-IronPort-AV: E=Sophos;i="5.87,293,1631548800"; d="scan'208";a="187605857" Received: from h199-255-45-14.hgst.com (HELO uls-op-cesaep01.wdc.com) ([199.255.45.14]) by ob1.hgst.iphmx.com with ESMTP; 07 Dec 2021 09:06:39 +0800 IronPort-SDR: Yiz+hifXVT0HDnoEq9J1vyFctBYZuBg1hsOIJvwRImhmFVottDYpOop5P5VWNWgkWABizCZesF RSAIjFNbFKiXYWhgR1k+Jm02kzGGhf3zK5mF7uCOoCw/qhmqARBlr1CGcdLb4uTa0sTQmEDLI9 H6Sl+Kdaqt97nsCr/dPPgx9ZUkwC0GDRXAeLbGeRC6toFDKiWxYSUiqZ5KgLKj/r+5EXBpVPnO 2P4zYPThz819+6rYzVhZF24U7EdlVKwqOYdMqPEm450jWjYiri2C2/1Shv9Ix5JF34mQ6xiaxM FPUf8KisKuHkPwdEI2LwdM4Q Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep01.wdc.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Dec 2021 16:41:16 -0800 IronPort-SDR: BkFrljzY78hU+OJonosaKQsm5wU6Wgn8LDvvKyMY88gKcP6K6MNOO7/DK/3eXFNcv2aqFPQzlh OGw9SAdJwiwN9B3UAAIdgI5OPbiPmVjsSQ+6ReOBMBxWvzw80A0VAu4U8nJwkzO8mxDXOLaC0m WES9r9RL2BRD0EwWzS5pDdPWRy4H/diLu9KQ8IGWD310IQL3bnxG5uAZDfeSMjDP46Pc392BCK y4KtMGdnu9HKwNG4xZtsZMBob1H0GLV7fjq7lz/Htj4HIHb8/kkDCrXpefmsykJnBOtq3Bqw9Y u9A= WDCIronportException: Internal Received: from shindev.dhcp.fujisawa.hgst.com (HELO shindev.fujisawa.hgst.com) ([10.149.52.173]) by uls-op-cesaip02.wdc.com with ESMTP; 06 Dec 2021 17:06:38 -0800 From: Shin'ichiro Kawasaki To: linux-scsi@vger.kernel.org Cc: "Martin K . Petersen" , Douglas Gilbert , Damien Le Moal , Shinichiro Kawasaki Subject: [PATCH v2] scsi: scsi_debug: Fix buffer size of REPORT ZONES command Date: Tue, 7 Dec 2021 10:06:38 +0900 Message-Id: <20211207010638.124280-1-shinichiro.kawasaki@wdc.com> X-Mailer: git-send-email 2.33.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org According to ZBC and SPC specifications, the unit of ALLOCATION LENGTH field of REPORT ZONES command is byte. However, current scsi_debug implementation handles it as number of zones to calculate buffer size to report zones. When the ALLOCATION LENGTH has a large number, this results in too large buffer size and causes memory allocation failure. Fix the failure by handling ALLOCATION LENGTH as byte unit. Fixes: f0d1cf9378bd ("scsi: scsi_debug: Add ZBC zone commands") Signed-off-by: Shin'ichiro Kawasaki --- Changes from v1: * Use kzalloc in place of kcalloc 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 3c0da3770edf..2104973a35cd 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -4342,7 +4342,7 @@ static int resp_report_zones(struct scsi_cmnd *scp, rep_max_zones = min((alloc_len - 64) >> ilog2(RZONES_DESC_HD), max_zones); - arr = kcalloc(RZONES_DESC_HD, alloc_len, GFP_ATOMIC); + arr = kzalloc(alloc_len, GFP_ATOMIC); if (!arr) { mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, INSUFF_RES_ASCQ);