From patchwork Thu Jun 24 04:13:15 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sukadev Bhattiprolu X-Patchwork-Id: 466754 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4FECBC49EA6 for ; Thu, 24 Jun 2021 04:16:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 35403613D3 for ; Thu, 24 Jun 2021 04:16:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230099AbhFXESS (ORCPT ); Thu, 24 Jun 2021 00:18:18 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:59992 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230056AbhFXEQP (ORCPT ); Thu, 24 Jun 2021 00:16:15 -0400 Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 15O43bEh026107 for ; Thu, 24 Jun 2021 00:13:28 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=i4YeZl+UWit3mOWMLX93BjI4C+hV3l2AzO//0T+5GCQ=; b=SJ8EqsCLSA2UfNrPS8FZHmiknNaFfkmBeYHUaMx3X41Ok7wQlWFRoD4Kj6X/pt6XkygV 9wqxlyJc5tqKKOgIy+5uxP7pC/SqLdhi8HRV9xyYevjVduJqh+8W20M+Wy3z+HCX1wJI 7QgUx2C3dOABUObVI0qELW/mRVxXm1isZsxIjcNhtVkXNLd1WFKFaFlcN0O9EqK3ceiC 5N2DJI0/Ro5c/u+gKBgIUo2EcQJaVLENCI8BacZv+ZBHOb3+sl1GYs+JfgT0xVI8AWr0 xK5xmaGx4pevZ95Qn48xupMJodm8aYVuUXWdekoumV3XrZonRDoIMWPheoTCa5NJkcmd tA== Received: from ppma05wdc.us.ibm.com (1b.90.2fa9.ip4.static.sl-reverse.com [169.47.144.27]) by mx0a-001b2d01.pphosted.com with ESMTP id 39ch58jfcq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 24 Jun 2021 00:13:28 -0400 Received: from pps.filterd (ppma05wdc.us.ibm.com [127.0.0.1]) by ppma05wdc.us.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 15O49tJV025810 for ; Thu, 24 Jun 2021 04:13:27 GMT Received: from b03cxnp08026.gho.boulder.ibm.com (b03cxnp08026.gho.boulder.ibm.com [9.17.130.18]) by ppma05wdc.us.ibm.com with ESMTP id 399879ns2d-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 24 Jun 2021 04:13:27 +0000 Received: from b03ledav003.gho.boulder.ibm.com (b03ledav003.gho.boulder.ibm.com [9.17.130.234]) by b03cxnp08026.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 15O4DQhL24576316 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 24 Jun 2021 04:13:26 GMT Received: from b03ledav003.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 024596A047; Thu, 24 Jun 2021 04:13:26 +0000 (GMT) Received: from b03ledav003.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E44F06A04D; Thu, 24 Jun 2021 04:13:24 +0000 (GMT) Received: from suka-w540.ibmuc.com (unknown [9.85.145.253]) by b03ledav003.gho.boulder.ibm.com (Postfix) with ESMTP; Thu, 24 Jun 2021 04:13:24 +0000 (GMT) From: Sukadev Bhattiprolu To: netdev@vger.kernel.org Cc: Dany Madden , Rick Lindsley , sukadev@linux.ibm.com, Brian King , cforno12@linux.ibm.com Subject: [PATCH net 6/7] ibmvnic: free tx_pool if tso_pool alloc fails Date: Wed, 23 Jun 2021 21:13:15 -0700 Message-Id: <20210624041316.567622-7-sukadev@linux.ibm.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210624041316.567622-1-sukadev@linux.ibm.com> References: <20210624041316.567622-1-sukadev@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: xuc6NY6V_2--Tp54wNpu91PDIAw1DJ3y X-Proofpoint-GUID: xuc6NY6V_2--Tp54wNpu91PDIAw1DJ3y X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391, 18.0.790 definitions=2021-06-23_14:2021-06-23,2021-06-23 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 phishscore=0 mlxlogscore=999 bulkscore=0 clxscore=1015 impostorscore=0 malwarescore=0 suspectscore=0 spamscore=0 adultscore=0 mlxscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2106240021 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Free tx_pool and clear it, if allocation of tso_pool fails. release_tx_pools() assumes we have both tx and tso_pools if ->tx_pool is non-NULL. If allocation of tso_pool fails in init_tx_pools(), the assumption will not be true and we would end up dereferencing ->tx_buff, ->free_map fields from a NULL pointer. Fixes: 3205306c6b8d ("ibmvnic: Update TX pool initialization routine") Signed-off-by: Sukadev Bhattiprolu --- drivers/net/ethernet/ibm/ibmvnic.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index b56406ca90c0..363a5d5503ad 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -801,8 +801,11 @@ static int init_tx_pools(struct net_device *netdev) adapter->tso_pool = kcalloc(tx_subcrqs, sizeof(struct ibmvnic_tx_pool), GFP_KERNEL); - if (!adapter->tso_pool) + if (!adapter->tso_pool) { + kfree(adapter->tx_pool); + adapter->tx_pool = NULL; return -1; + } adapter->num_active_tx_pools = tx_subcrqs;