From patchwork Tue Jan 10 01:55:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shinichiro Kawasaki X-Patchwork-Id: 13094595 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 726D3C54EBD for ; Tue, 10 Jan 2023 01:55:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229445AbjAJBzo (ORCPT ); Mon, 9 Jan 2023 20:55:44 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37766 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229762AbjAJBzn (ORCPT ); Mon, 9 Jan 2023 20:55:43 -0500 Received: from esa2.hgst.iphmx.com (esa2.hgst.iphmx.com [68.232.143.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A6EC913F23 for ; Mon, 9 Jan 2023 17:55:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1673315741; x=1704851741; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=8QTa+ZXhS+gfABgWpDdnMlCj5JOX+WkkogmapTpAIVY=; b=m9F1vtQwAlx5HoK8an2+AGWgNLuJFPFZosWuPh7HQtwBx04QQ4BZhzGi MYIcsJ+T57SnCDTbp8oOmGnQeO4pIE+NTNDnEYTE0/f5NcTuKxw24Rv3I MU/0X4puUsitjTIs2Lz8IKPz1EukFCdsG3UpeXA+vuY5DtO3Ckso7piU+ HXtfLowbwZd3zzq2MgTWx64DozEF3BzAxtamQ+h9kbcueIBHY2iZzsb2X CjMM9149nSI9Ureg7cTU2zBA1iGBerRENsYc7wlF8j9dxo2Qq4GG7tu/I TG7J/vQpPNOsJWNtBIeqHYpmV/j1yfv1i1lSRAk1tcJIps+FxsgD58KUQ g==; X-IronPort-AV: E=Sophos;i="5.96,313,1665417600"; d="scan'208";a="324698278" Received: from h199-255-45-15.hgst.com (HELO uls-op-cesaep02.wdc.com) ([199.255.45.15]) by ob1.hgst.iphmx.com with ESMTP; 10 Jan 2023 09:55:41 +0800 IronPort-SDR: lvFwycepLoOYg1vUoQ3UPWdg5CZ5lMrjEWNNbEbd4Uyatu0mEA9Rn65GHyvPiSBYAshzzqrpZu tjRtUvcP78a1J2LdK2dz+Wnaflks7IZ4buztOPGw0BjkzQUZBi4KJRZAuV7mNCDpOEMoCRrHzu 4BUmyKmtFL8aPZ7Xjh8Mt/XU0rxcO6o+vPpbsTBSBdbwnO3wIRg+GfUJ11e7m+vs0bSJS4yVDa kUQny6NJX8PbO9EMAiy9x2BmCUfUV+z4UXl60/vlN1jEkh3vCOgzC1fH67EX8xq4AwdOU9bFpO a8o= Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep02.wdc.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 09 Jan 2023 17:07:47 -0800 IronPort-SDR: KnfoTVmeQn5zM7HhfV1U6wSdrWPqDnTpj0nWkg3vAPR4WtnOzOv8X+4JoTUEd4Rgy+uH3MSFBx 5eDhxzoIy63cJTcCfzLPfie7sPclUBleDmMcvvpyHVT10ye05s+4sTGi0jBirVgbVLZv1Th9Hh QJR1XQjumkLnKOSILF6uCi1v/ooAnDBhW+xrIXU98G3lxz8Z/rpf3WX00E8mHFQ50K1UnAp6+R q7SmtZ2626EXbkE/itK4XXqxbyo+k4/YWmHyUs000t4fC5gAuZx12MBGrLCxJ8bFhg20XBlugK TM8= WDCIronportException: Internal Received: from shindev.dhcp.fujisawa.hgst.com (HELO shindev.fujisawa.hgst.com) ([10.149.52.207]) by uls-op-cesaip02.wdc.com with ESMTP; 09 Jan 2023 17:55:41 -0800 From: Shin'ichiro Kawasaki To: linux-scsi@vger.kernel.org, mpi3mr-linuxdrv.pdl@broadcom.com Cc: Sathya Prakash Veerichetty , Kashyap Desai , Sumit Saxena , Sreekanth Reddy , "Martin K . Petersen" , Damien Le Moal , Shin'ichiro Kawasaki Subject: [PATCH v3 1/5] scsi: mpi3mr: remove unnecessary memcpy Date: Tue, 10 Jan 2023 10:55:34 +0900 Message-Id: <20230110015538.201332-2-shinichiro.kawasaki@wdc.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230110015538.201332-1-shinichiro.kawasaki@wdc.com> References: <20230110015538.201332-1-shinichiro.kawasaki@wdc.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org In the function mpi3mr_get_all_tgt_info, devmap_info points to alltgt_info->dmi then there is no need to memcpy data from devmap_info to alltgt_info->dmi. Remove the unnecessary memcpy. This also allows to remove the local variable 'rval' and the goto label 'out'. Fixes: f5e6d5a34376 ("scsi: mpi3mr: Add support for driver commands") Cc: stable@vger.kernel.org Signed-off-by: Shin'ichiro Kawasaki --- drivers/scsi/mpi3mr/mpi3mr_app.c | 13 ++----------- 1 file changed, 2 insertions(+), 11 deletions(-) diff --git a/drivers/scsi/mpi3mr/mpi3mr_app.c b/drivers/scsi/mpi3mr/mpi3mr_app.c index 9baac224b213..5bbfdff70570 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_app.c +++ b/drivers/scsi/mpi3mr/mpi3mr_app.c @@ -293,7 +293,6 @@ static long mpi3mr_bsg_pel_enable(struct mpi3mr_ioc *mrioc, static long mpi3mr_get_all_tgt_info(struct mpi3mr_ioc *mrioc, struct bsg_job *job) { - long rval = -EINVAL; u16 num_devices = 0, i = 0, size; unsigned long flags; struct mpi3mr_tgt_dev *tgtdev; @@ -304,7 +303,7 @@ static long mpi3mr_get_all_tgt_info(struct mpi3mr_ioc *mrioc, if (job->request_payload.payload_len < sizeof(u32)) { dprint_bsg_err(mrioc, "%s: invalid size argument\n", __func__); - return rval; + return -EINVAL; } spin_lock_irqsave(&mrioc->tgtdev_lock, flags); @@ -349,20 +348,12 @@ static long mpi3mr_get_all_tgt_info(struct mpi3mr_ioc *mrioc, usr_entrylen = (job->request_payload.payload_len - sizeof(u32)) / sizeof(*devmap_info); usr_entrylen *= sizeof(*devmap_info); min_entrylen = min(usr_entrylen, kern_entrylen); - if (min_entrylen && (!memcpy(&alltgt_info->dmi, devmap_info, min_entrylen))) { - dprint_bsg_err(mrioc, "%s:%d: device map info copy failed\n", - __func__, __LINE__); - rval = -EFAULT; - goto out; - } sg_copy_from_buffer(job->request_payload.sg_list, job->request_payload.sg_cnt, alltgt_info, job->request_payload.payload_len); - rval = 0; -out: kfree(alltgt_info); - return rval; + return 0; } /** * mpi3mr_get_change_count - Get topology change count From patchwork Tue Jan 10 01:55:35 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shinichiro Kawasaki X-Patchwork-Id: 13094596 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 6DA39C54EBD for ; Tue, 10 Jan 2023 01:55:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230367AbjAJBzq (ORCPT ); Mon, 9 Jan 2023 20:55:46 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37768 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229772AbjAJBzn (ORCPT ); Mon, 9 Jan 2023 20:55:43 -0500 Received: from esa2.hgst.iphmx.com (esa2.hgst.iphmx.com [68.232.143.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D2F0813F81 for ; Mon, 9 Jan 2023 17:55:42 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1673315742; x=1704851742; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=yP+pfioZVPWpcD8jAC85tCAaBqkXEUgxq9uVOK+1vnM=; b=qLd/BO3FutusRhF/fOPKIM66WtgKz5WuABhnpy+5Q2n53/up//UaG5Wz bgvlkDUlnPnzIAko5xB3oo0FHBvQqdqKFj+RHBV4ttWf9dOVqcQ0ivmZS b85eA5WoVrtJ6dPpUWfn8L+dm4W+JNkvInVdWkKHHxFhNRYmlKgXCDGfL rh8WxXU/nTsVMTgcRgOzUElbfE8cj/8BtCK4KyN4+eBuh9OI3nlyYCDBr CuBeBZ/0U772c5RAsuudTSFlDJ6ipeO1e8waKquw0pAFqV83XFLEUxVQu 7jaSQvSRs8YbzySddLPZprZt+pb4DiDJsOBlSf4+151Rnray0ygwa6vVE g==; X-IronPort-AV: E=Sophos;i="5.96,313,1665417600"; d="scan'208";a="324698281" Received: from h199-255-45-15.hgst.com (HELO uls-op-cesaep02.wdc.com) ([199.255.45.15]) by ob1.hgst.iphmx.com with ESMTP; 10 Jan 2023 09:55:42 +0800 IronPort-SDR: oorP4nn5SgHGkrgnqHfGj4J+zCeOVUz/y6eJ6NER/ChDuRCeYSxmnRxBH4rDSKWKlncZ/n5cZr q/vzwk7vv9TVz51aLlcDsT+80lVx+k39CHKHZwf5k0l6WW/Uf7Fvpt6XIeQlDlnafkhqUs5/Vw HRZD0V2UnDF4LfMYcddQ+biZA2psoZZop2lc3zM5MZWqctfHoDFHB/AhlOlzyj+HcQh2WgMEyj vxDJipnEhB7hU7qrGe+U0t5m1fyVCc4vLTIYncEzeJbB3yai5iAgEdBKLEl8Kq1vulsjldwD3V tXg= Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep02.wdc.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 09 Jan 2023 17:07:48 -0800 IronPort-SDR: Jx2nqKqoveCzDuVh5fYF0UCFBm16qx8Hr/gNdg/ifcfrFmiQz5zroSKaN8sKmmazOEJxlssUGJ kxiXXGzGydTqJs1xiwIDkqhzAiaRGU+ry931KEGXRREgs7OqcnQ1jFjB+/+gbDZnSvgZyCScL6 pDPZy3P0IPNrSb0XuDhXF3OA9YEZmNZyTmysTvYEJUzEtyFtbUUs19hhdlVo027XAmWR7u2lKm L5GpO8fXgyf61MSpe9dSBa1d4OpXKp5Jw7kexkjScuUxqkf8b34yNyHwlIUNcQuIZUHIpWncOr u/g= WDCIronportException: Internal Received: from shindev.dhcp.fujisawa.hgst.com (HELO shindev.fujisawa.hgst.com) ([10.149.52.207]) by uls-op-cesaip02.wdc.com with ESMTP; 09 Jan 2023 17:55:42 -0800 From: Shin'ichiro Kawasaki To: linux-scsi@vger.kernel.org, mpi3mr-linuxdrv.pdl@broadcom.com Cc: Sathya Prakash Veerichetty , Kashyap Desai , Sumit Saxena , Sreekanth Reddy , "Martin K . Petersen" , Damien Le Moal , Shin'ichiro Kawasaki Subject: [PATCH v3 2/5] scsi: mpi3mr: fix calculation of valid entry length in alltgt_info Date: Tue, 10 Jan 2023 10:55:35 +0900 Message-Id: <20230110015538.201332-3-shinichiro.kawasaki@wdc.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230110015538.201332-1-shinichiro.kawasaki@wdc.com> References: <20230110015538.201332-1-shinichiro.kawasaki@wdc.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org The function mpi3mr_get_all_tgt_info calculates valid entry length in alltgt_info whose type is pointer to struct mpi3mr_device_map_info. However, the calculation assumes that the struct would have size of u32. This results in wrong entry length. Fix the calculation to use the size of *alltgt_info in place of u32. Fixes: f5e6d5a34376 ("scsi: mpi3mr: Add support for driver commands") Cc: stable@vger.kernel.org Signed-off-by: Shin'ichiro Kawasaki --- drivers/scsi/mpi3mr/mpi3mr_app.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/mpi3mr/mpi3mr_app.c b/drivers/scsi/mpi3mr/mpi3mr_app.c index 5bbfdff70570..239cb5e07b24 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_app.c +++ b/drivers/scsi/mpi3mr/mpi3mr_app.c @@ -345,7 +345,8 @@ static long mpi3mr_get_all_tgt_info(struct mpi3mr_ioc *mrioc, memcpy(&alltgt_info->num_devices, &num_devices, sizeof(num_devices)); - usr_entrylen = (job->request_payload.payload_len - sizeof(u32)) / sizeof(*devmap_info); + usr_entrylen = (job->request_payload.payload_len - sizeof(*alltgt_info)) + / sizeof(*devmap_info); usr_entrylen *= sizeof(*devmap_info); min_entrylen = min(usr_entrylen, kern_entrylen); From patchwork Tue Jan 10 01:55:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shinichiro Kawasaki X-Patchwork-Id: 13094597 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 E7648C54EBE for ; Tue, 10 Jan 2023 01:55:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229772AbjAJBzv (ORCPT ); Mon, 9 Jan 2023 20:55:51 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37774 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230139AbjAJBzp (ORCPT ); Mon, 9 Jan 2023 20:55:45 -0500 Received: from esa2.hgst.iphmx.com (esa2.hgst.iphmx.com [68.232.143.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 80FF121BA for ; Mon, 9 Jan 2023 17:55:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1673315744; x=1704851744; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=wW+KssJAu8gxTpF6QvSsxjg7SpGp9UJec9248/IUPW4=; b=rLn1Nie7njwTIDic6yngvf5kEIZdtwkCdxgFESJAPgh91fqncsWQng2V be0qAricYuuUXaglv6jao3s8OPeK3BZ3LPIvIhPjl01njXLGsI9FJjbj1 7j9VDaz6gqNYagEI95OtEGVVkoKi+8VnZsPo+YivRS//JxCAFwdo3Whvz Yye68rx/HibM6XT9lFST2j7O1GVWjFBfEOwWYbedzQzPX1j4+VDwqdU5l B/UoJXbB9ptmgaheYvH1i2xSQ1vgLkgj70OizRk94Ud01bnZUEifNvpmW VAtFOUphlTOPHXIPYKdl3WAO2dW2dsJeX/qVjmqOb2n/8oyEgtyOqARLU w==; X-IronPort-AV: E=Sophos;i="5.96,313,1665417600"; d="scan'208";a="324698284" Received: from h199-255-45-15.hgst.com (HELO uls-op-cesaep02.wdc.com) ([199.255.45.15]) by ob1.hgst.iphmx.com with ESMTP; 10 Jan 2023 09:55:44 +0800 IronPort-SDR: dzS26NABok8eVEoTV/UdNGx0d1iAvVg8CYW7WoWDodNvq34fcXTFLxbE1+RXDZDYmv2boEVsR1 7Z0aUYrnO2dP3pae/7pTPh4Z02AJZYBgU/r1E8uQMnwXvhX4PEbpIRHsY4IDWUwf/KoRt358fO MUFc85kTimF+TlJ4U68fCBGmrg9bGKGVgPCGvjNx1J5+Io8THyIAGC6d5xuxxy7nVK4NDPDpcJ cHKW87AuPlGBW4Ymc5kq41L8MYDl0NGpX5RFNSjKq99qjQqsmzcskdCGjuO9jRlHfrhGlvBneD wSg= Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep02.wdc.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 09 Jan 2023 17:07:49 -0800 IronPort-SDR: /STikF90tjRXR0MiaQUdtldNm27j2mB9YkyvOpsxg6X71Fm96pTEDro5/GIU9g5M4kZsgZcEpS bYFJK8AMQTpNFNhCBcCWZ3pgsG4mPHG+It9GEdNQLsFLSyj4AqJaawIRMzyEfgcBunsjMSIzrb n1tdjqeSQ1zK4b3fwhnwQH/97/zf87niQwuakyoVof5jhwBp58+QxmQWwiaSgPSlEyTLftaIzU JGtb6keqeCzzHTpNaqp+QQpOOmrCGzak3xHR3PPkYBHTVfwCc/Fd9MR5tvbe0+QJdHXk5OrzRQ n/k= WDCIronportException: Internal Received: from shindev.dhcp.fujisawa.hgst.com (HELO shindev.fujisawa.hgst.com) ([10.149.52.207]) by uls-op-cesaip02.wdc.com with ESMTP; 09 Jan 2023 17:55:43 -0800 From: Shin'ichiro Kawasaki To: linux-scsi@vger.kernel.org, mpi3mr-linuxdrv.pdl@broadcom.com Cc: Sathya Prakash Veerichetty , Kashyap Desai , Sumit Saxena , Sreekanth Reddy , "Martin K . Petersen" , Damien Le Moal , Shin'ichiro Kawasaki Subject: [PATCH v3 3/5] scsi: mpi3mr: fix alltgt_info copy size Date: Tue, 10 Jan 2023 10:55:36 +0900 Message-Id: <20230110015538.201332-4-shinichiro.kawasaki@wdc.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230110015538.201332-1-shinichiro.kawasaki@wdc.com> References: <20230110015538.201332-1-shinichiro.kawasaki@wdc.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org The function mpi3mr_get_all_tgt_info calculates min_entrylen which holds the valid entry length in alltgt_info. However, it does not refer min_entrylen when it calls sg_copy_from_buffer to copy the valid entries from alltgt_info to job->request_payload. Instead, it specifies the payload length which is larger than the alltgt_info size, then it causes "BUG: KASAN: slab-out-of-bounds". Fix the BUG by specifying the correct length referring the calculated min_entrylen. Fixes: f5e6d5a34376 ("scsi: mpi3mr: Add support for driver commands") Cc: stable@vger.kernel.org Signed-off-by: Shin'ichiro Kawasaki --- drivers/scsi/mpi3mr/mpi3mr_app.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/mpi3mr/mpi3mr_app.c b/drivers/scsi/mpi3mr/mpi3mr_app.c index 239cb5e07b24..3b4ae044f4c0 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_app.c +++ b/drivers/scsi/mpi3mr/mpi3mr_app.c @@ -352,7 +352,7 @@ static long mpi3mr_get_all_tgt_info(struct mpi3mr_ioc *mrioc, sg_copy_from_buffer(job->request_payload.sg_list, job->request_payload.sg_cnt, - alltgt_info, job->request_payload.payload_len); + alltgt_info, sizeof(*alltgt_info) + min_entrylen); kfree(alltgt_info); return 0; } From patchwork Tue Jan 10 01:55:37 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shinichiro Kawasaki X-Patchwork-Id: 13094598 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 CCA59C5479D for ; Tue, 10 Jan 2023 01:55:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229762AbjAJBzw (ORCPT ); Mon, 9 Jan 2023 20:55:52 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37804 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230453AbjAJBzq (ORCPT ); Mon, 9 Jan 2023 20:55:46 -0500 Received: from esa2.hgst.iphmx.com (esa2.hgst.iphmx.com [68.232.143.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AE5BD1869B for ; Mon, 9 Jan 2023 17:55:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1673315745; x=1704851745; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=sgAev5VzvlIv5c4/OhZ3LiIg69h8A1vafDAPidAnZ3w=; b=mAsbbz9ARRoIwczVYcEtCwxPGSXf2xTar2w06a8GhMev3R5doOckyAjx Ckw7nsmIVpKakDFR2qG6t+s36mTJ+4uEydOj2+RiGXOot07S/1fO+6hAS 71SbEdw+XnRfCdmi0fuobfCYEYFXXzw7EE9S86VV32AmlhzeCUPJRi8rv xFLyZq0gEzDm9bmBPEbMOnIcVcFaSHEOUUSSCUOaIGQrDrzIaHHIxrVnr 4QWEOt6RPRtQMqi6TlvU/Jh67KAo5o9RQgVZhUGEfaG/5lY9edCtoB8we XfH25+kWwDmTsbBs1iemdgMOjLPe1j+N+LXPrdoDHv+bFrfc3drmPvlfs w==; X-IronPort-AV: E=Sophos;i="5.96,313,1665417600"; d="scan'208";a="324698289" Received: from h199-255-45-15.hgst.com (HELO uls-op-cesaep02.wdc.com) ([199.255.45.15]) by ob1.hgst.iphmx.com with ESMTP; 10 Jan 2023 09:55:45 +0800 IronPort-SDR: hHbd/+9Umvsv4sRgo4y9HCPmH3nyoB7Oe1/NskTPvH8MxZgCGucUvKIfW7LNPA1Lb+p4FEwG/V 07rvqkhckmH0Jo6l+xBpty7+l1SOieRfEF2ChDOUVyCH31ExYfNmPmC0pZevFbsOp3pv5Pbv0m v0avidFHsp3P8temjlDHcwwD//YTnCPV4OjZv4h4Gh4dYyqplOFVcS3/em5LoRjMhYs7zAznxK W9vyucRl0y81FUeJ82FEVspnF9PvGfcsw5xUWlNcfmUcFHDkDbOLQ/aj7esDdoEaMXxfzyqmVh xE4= Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep02.wdc.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 09 Jan 2023 17:07:51 -0800 IronPort-SDR: hReiqU8yvp8IG+ZDCp8yFHm3JlO0OA6Sl/iWd0HOAfEHqqWMcR7CxGh1f6r3lOg9yqUA5mP7T3 boAcw7qQNTDWIF5euULW182TanjvhMfm42dK+X04MGaWK55GktofWcKg6HTV4ELCBt0wmTtuC+ G/oWrcBCj6UMiK0YWPMTVXQgmJaaquQAe8ZtgWzsNDobVKQfvOMhZH26OgSGxwr+WYq8aR97YP amEi8ZKPsUP+flG7HlDNVCeAJUjjblulWvcjSw2zgHLAZ9MvphSu0YC04JtNwcMa878t1mkTqR YmE= WDCIronportException: Internal Received: from shindev.dhcp.fujisawa.hgst.com (HELO shindev.fujisawa.hgst.com) ([10.149.52.207]) by uls-op-cesaip02.wdc.com with ESMTP; 09 Jan 2023 17:55:45 -0800 From: Shin'ichiro Kawasaki To: linux-scsi@vger.kernel.org, mpi3mr-linuxdrv.pdl@broadcom.com Cc: Sathya Prakash Veerichetty , Kashyap Desai , Sumit Saxena , Sreekanth Reddy , "Martin K . Petersen" , Damien Le Moal , Shin'ichiro Kawasaki Subject: [PATCH v3 4/5] scsi: mpi3mr: use number of bits to manage bitmap sizes Date: Tue, 10 Jan 2023 10:55:37 +0900 Message-Id: <20230110015538.201332-5-shinichiro.kawasaki@wdc.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230110015538.201332-1-shinichiro.kawasaki@wdc.com> References: <20230110015538.201332-1-shinichiro.kawasaki@wdc.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org To allocate bitmaps, the mpi3mr driver calculates sizes of bitmaps using byte as unit. However, bitmap helper functions assume that bitmaps are allocated using unsigned long as unit. This gap causes memory access beyond the bitmap sizes and results in "BUG: KASAN: slab-out-of-bounds". The BUG was observed at firmware download to eHBA-9600. Call trace indicated that the out-of-bounds access happened in find_first_zero_bit called from mpi3mr_send_event_ack for miroc->evtack_cmds_bitmap. To fix the BUG, do not use bytes to manage bitmap sizes. Instead, use number of bits, and call bitmap helper functions which take number of bits as arguments. For memory allocation, call bitmap_zalloc instead of kzalloc. For zero clear, call bitmap_clear instead of memset. For resize, call bitmap_zalloc and bitmap_copy instead of krealloc. Remove three fields for bitmap byte sizes in struct scmd_priv, which are no longer required. Replace the field dev_handle_bitmap_sz with dev_handle_bitmap_bits to keep number of bits of removepend_bitmap across resize. Fixes: c5758fc72b92 ("scsi: mpi3mr: Gracefully handle online FW update operation") Fixes: e844adb1fbdc ("scsi: mpi3mr: Implement SCSI error handler hooks") Fixes: c1af985d27da ("scsi: mpi3mr: Add Event acknowledgment logic") Fixes: 824a156633df ("scsi: mpi3mr: Base driver code") Signed-off-by: Shin'ichiro Kawasaki Reviewed-by: Damien Le Moal --- drivers/scsi/mpi3mr/mpi3mr.h | 10 +---- drivers/scsi/mpi3mr/mpi3mr_fw.c | 68 ++++++++++++++------------------- 2 files changed, 30 insertions(+), 48 deletions(-) diff --git a/drivers/scsi/mpi3mr/mpi3mr.h b/drivers/scsi/mpi3mr/mpi3mr.h index def4c5e15cd8..8a438f248a82 100644 --- a/drivers/scsi/mpi3mr/mpi3mr.h +++ b/drivers/scsi/mpi3mr/mpi3mr.h @@ -955,19 +955,16 @@ struct scmd_priv { * @chain_buf_count: Chain buffer count * @chain_buf_pool: Chain buffer pool * @chain_sgl_list: Chain SGL list - * @chain_bitmap_sz: Chain buffer allocator bitmap size * @chain_bitmap: Chain buffer allocator bitmap * @chain_buf_lock: Chain buffer list lock * @bsg_cmds: Command tracker for BSG command * @host_tm_cmds: Command tracker for task management commands * @dev_rmhs_cmds: Command tracker for device removal commands * @evtack_cmds: Command tracker for event ack commands - * @devrem_bitmap_sz: Device removal bitmap size * @devrem_bitmap: Device removal bitmap - * @dev_handle_bitmap_sz: Device handle bitmap size + * @dev_handle_bitmap_bits: Number of bits in device handle bitmap * @removepend_bitmap: Remove pending bitmap * @delayed_rmhs_list: Delayed device removal list - * @evtack_cmds_bitmap_sz: Event Ack bitmap size * @evtack_cmds_bitmap: Event Ack bitmap * @delayed_evtack_cmds_list: Delayed event acknowledgment list * @ts_update_counter: Timestamp update counter @@ -1128,7 +1125,6 @@ struct mpi3mr_ioc { u32 chain_buf_count; struct dma_pool *chain_buf_pool; struct chain_element *chain_sgl_list; - u16 chain_bitmap_sz; void *chain_bitmap; spinlock_t chain_buf_lock; @@ -1136,12 +1132,10 @@ struct mpi3mr_ioc { struct mpi3mr_drv_cmd host_tm_cmds; struct mpi3mr_drv_cmd dev_rmhs_cmds[MPI3MR_NUM_DEVRMCMD]; struct mpi3mr_drv_cmd evtack_cmds[MPI3MR_NUM_EVTACKCMD]; - u16 devrem_bitmap_sz; void *devrem_bitmap; - u16 dev_handle_bitmap_sz; + u16 dev_handle_bitmap_bits; void *removepend_bitmap; struct list_head delayed_rmhs_list; - u16 evtack_cmds_bitmap_sz; void *evtack_cmds_bitmap; struct list_head delayed_evtack_cmds_list; diff --git a/drivers/scsi/mpi3mr/mpi3mr_fw.c b/drivers/scsi/mpi3mr/mpi3mr_fw.c index 0c4aabaefdcc..8ed4566772ca 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_fw.c +++ b/drivers/scsi/mpi3mr/mpi3mr_fw.c @@ -1128,7 +1128,6 @@ static int mpi3mr_issue_and_process_mur(struct mpi3mr_ioc *mrioc, static int mpi3mr_revalidate_factsdata(struct mpi3mr_ioc *mrioc) { - u16 dev_handle_bitmap_sz; void *removepend_bitmap; if (mrioc->facts.reply_sz > mrioc->reply_sz) { @@ -1160,25 +1159,24 @@ mpi3mr_revalidate_factsdata(struct mpi3mr_ioc *mrioc) "\tcontroller while sas transport support is enabled at the\n" "\tdriver, please reboot the system or reload the driver\n"); - dev_handle_bitmap_sz = mrioc->facts.max_devhandle / 8; - if (mrioc->facts.max_devhandle % 8) - dev_handle_bitmap_sz++; - if (dev_handle_bitmap_sz > mrioc->dev_handle_bitmap_sz) { - removepend_bitmap = krealloc(mrioc->removepend_bitmap, - dev_handle_bitmap_sz, GFP_KERNEL); + if (mrioc->facts.max_devhandle > mrioc->dev_handle_bitmap_bits) { + removepend_bitmap = bitmap_zalloc(mrioc->facts.max_devhandle, + GFP_KERNEL); if (!removepend_bitmap) { ioc_err(mrioc, - "failed to increase removepend_bitmap sz from: %d to %d\n", - mrioc->dev_handle_bitmap_sz, dev_handle_bitmap_sz); + "failed to increase removepend_bitmap bits from %d to %d\n", + mrioc->dev_handle_bitmap_bits, + mrioc->facts.max_devhandle); return -EPERM; } - memset(removepend_bitmap + mrioc->dev_handle_bitmap_sz, 0, - dev_handle_bitmap_sz - mrioc->dev_handle_bitmap_sz); + bitmap_copy(removepend_bitmap, mrioc->removepend_bitmap, + mrioc->dev_handle_bitmap_bits); mrioc->removepend_bitmap = removepend_bitmap; ioc_info(mrioc, - "increased dev_handle_bitmap_sz from %d to %d\n", - mrioc->dev_handle_bitmap_sz, dev_handle_bitmap_sz); - mrioc->dev_handle_bitmap_sz = dev_handle_bitmap_sz; + "increased bits of dev_handle_bitmap from %d to %d\n", + mrioc->dev_handle_bitmap_bits, + mrioc->facts.max_devhandle); + mrioc->dev_handle_bitmap_bits = mrioc->facts.max_devhandle; } return 0; @@ -2957,27 +2955,18 @@ static int mpi3mr_alloc_reply_sense_bufs(struct mpi3mr_ioc *mrioc) if (!mrioc->pel_abort_cmd.reply) goto out_failed; - mrioc->dev_handle_bitmap_sz = mrioc->facts.max_devhandle / 8; - if (mrioc->facts.max_devhandle % 8) - mrioc->dev_handle_bitmap_sz++; - mrioc->removepend_bitmap = kzalloc(mrioc->dev_handle_bitmap_sz, - GFP_KERNEL); + mrioc->dev_handle_bitmap_bits = mrioc->facts.max_devhandle; + mrioc->removepend_bitmap = bitmap_zalloc(mrioc->dev_handle_bitmap_bits, + GFP_KERNEL); if (!mrioc->removepend_bitmap) goto out_failed; - mrioc->devrem_bitmap_sz = MPI3MR_NUM_DEVRMCMD / 8; - if (MPI3MR_NUM_DEVRMCMD % 8) - mrioc->devrem_bitmap_sz++; - mrioc->devrem_bitmap = kzalloc(mrioc->devrem_bitmap_sz, - GFP_KERNEL); + mrioc->devrem_bitmap = bitmap_zalloc(MPI3MR_NUM_DEVRMCMD, GFP_KERNEL); if (!mrioc->devrem_bitmap) goto out_failed; - mrioc->evtack_cmds_bitmap_sz = MPI3MR_NUM_EVTACKCMD / 8; - if (MPI3MR_NUM_EVTACKCMD % 8) - mrioc->evtack_cmds_bitmap_sz++; - mrioc->evtack_cmds_bitmap = kzalloc(mrioc->evtack_cmds_bitmap_sz, - GFP_KERNEL); + mrioc->evtack_cmds_bitmap = bitmap_zalloc(MPI3MR_NUM_EVTACKCMD, + GFP_KERNEL); if (!mrioc->evtack_cmds_bitmap) goto out_failed; @@ -3415,10 +3404,7 @@ static int mpi3mr_alloc_chain_bufs(struct mpi3mr_ioc *mrioc) if (!mrioc->chain_sgl_list[i].addr) goto out_failed; } - mrioc->chain_bitmap_sz = num_chains / 8; - if (num_chains % 8) - mrioc->chain_bitmap_sz++; - mrioc->chain_bitmap = kzalloc(mrioc->chain_bitmap_sz, GFP_KERNEL); + mrioc->chain_bitmap = bitmap_zalloc(num_chains, GFP_KERNEL); if (!mrioc->chain_bitmap) goto out_failed; return retval; @@ -4190,10 +4176,11 @@ void mpi3mr_memset_buffers(struct mpi3mr_ioc *mrioc) for (i = 0; i < MPI3MR_NUM_EVTACKCMD; i++) memset(mrioc->evtack_cmds[i].reply, 0, sizeof(*mrioc->evtack_cmds[i].reply)); - memset(mrioc->removepend_bitmap, 0, mrioc->dev_handle_bitmap_sz); - memset(mrioc->devrem_bitmap, 0, mrioc->devrem_bitmap_sz); - memset(mrioc->evtack_cmds_bitmap, 0, - mrioc->evtack_cmds_bitmap_sz); + bitmap_clear(mrioc->removepend_bitmap, 0, + mrioc->dev_handle_bitmap_bits); + bitmap_clear(mrioc->devrem_bitmap, 0, MPI3MR_NUM_DEVRMCMD); + bitmap_clear(mrioc->evtack_cmds_bitmap, 0, + MPI3MR_NUM_EVTACKCMD); } for (i = 0; i < mrioc->num_queues; i++) { @@ -4887,9 +4874,10 @@ int mpi3mr_soft_reset_handler(struct mpi3mr_ioc *mrioc, mpi3mr_flush_delayed_cmd_lists(mrioc); mpi3mr_flush_drv_cmds(mrioc); - memset(mrioc->devrem_bitmap, 0, mrioc->devrem_bitmap_sz); - memset(mrioc->removepend_bitmap, 0, mrioc->dev_handle_bitmap_sz); - memset(mrioc->evtack_cmds_bitmap, 0, mrioc->evtack_cmds_bitmap_sz); + bitmap_clear(mrioc->devrem_bitmap, 0, MPI3MR_NUM_DEVRMCMD); + bitmap_clear(mrioc->removepend_bitmap, 0, + mrioc->dev_handle_bitmap_bits); + bitmap_clear(mrioc->evtack_cmds_bitmap, 0, MPI3MR_NUM_EVTACKCMD); mpi3mr_flush_host_io(mrioc); mpi3mr_cleanup_fwevt_list(mrioc); mpi3mr_invalidate_devhandles(mrioc); From patchwork Tue Jan 10 01:55:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shinichiro Kawasaki X-Patchwork-Id: 13094599 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 940C4C54EBD for ; Tue, 10 Jan 2023 01:55:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235410AbjAJBzy (ORCPT ); Mon, 9 Jan 2023 20:55:54 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37842 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235141AbjAJBzs (ORCPT ); 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Petersen" , Damien Le Moal , Shin'ichiro Kawasaki Subject: [PATCH v3 5/5] scsi: mpi3mr: fix missing mrioc->evtack_cmds initialization Date: Tue, 10 Jan 2023 10:55:38 +0900 Message-Id: <20230110015538.201332-6-shinichiro.kawasaki@wdc.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230110015538.201332-1-shinichiro.kawasaki@wdc.com> References: <20230110015538.201332-1-shinichiro.kawasaki@wdc.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org The commit c1af985d27da ("scsi: mpi3mr: Add Event acknowledgment logic") introduced an array mrioc->evtack_cmds. But initialization of the array elements was missed. They are just zero cleared. The function mpi3mr_complete_evt_ack refers host_tag field of the elements. Due to zero value of the host_tag field, the functions calls clear_bit for mrico->evtack_cmds_bitmap with wrong bit index. This results in memory access to invalid address and "BUG: KASAN: use-after-free". This BUG was observed at eHBA-9600 firmware update to version 8.3.1.0. To fix it, add the missing initialization of mrioc->evtack_cmds. Fixes: c1af985d27da ("scsi: mpi3mr: Add Event acknowledgment logic") Cc: stable@vger.kernel.org Signed-off-by: Shin'ichiro Kawasaki Reviewed-by: Damien Le Moal Acked-by: Sathya Prakash Veerichetty --- drivers/scsi/mpi3mr/mpi3mr_os.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c index 3306de7170f6..6eaeba41072c 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_os.c +++ b/drivers/scsi/mpi3mr/mpi3mr_os.c @@ -4952,6 +4952,10 @@ mpi3mr_probe(struct pci_dev *pdev, const struct pci_device_id *id) mpi3mr_init_drv_cmd(&mrioc->dev_rmhs_cmds[i], MPI3MR_HOSTTAG_DEVRMCMD_MIN + i); + for (i = 0; i < MPI3MR_NUM_EVTACKCMD; i++) + mpi3mr_init_drv_cmd(&mrioc->evtack_cmds[i], + MPI3MR_HOSTTAG_EVTACKCMD_MIN + i); + if (pdev->revision) mrioc->enable_segqueue = true;