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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Mon, 20 May 2019 08:18:47 +0100 Received: from d06av22.portsmouth.uk.ibm.com (d06av22.portsmouth.uk.ibm.com [9.149.105.58]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x4K7IkPs48365822 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 20 May 2019 07:18:46 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 03FCA4C040; Mon, 20 May 2019 07:18:46 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A92344C058; Mon, 20 May 2019 07:18:45 +0000 (GMT) Received: from ozlabs.au.ibm.com (unknown [9.192.253.14]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Mon, 20 May 2019 07:18:45 +0000 (GMT) Received: from [10.61.2.125] (haven.au.ibm.com [9.192.254.114]) (using TLSv1.2 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by ozlabs.au.ibm.com (Postfix) with ESMTPSA id 1B54FA01A2; Mon, 20 May 2019 17:18:43 +1000 (AEST) Subject: Re: [PATCH v2] ocxl: Fix potential memory leak on context creation To: Frederic Barrat , linuxppc-dev@lists.ozlabs.org, andrew.donnellan@au1.ibm.com, alastair@au1.ibm.com References: <20190520071618.1722-1-fbarrat@linux.ibm.com> From: Andrew Donnellan Date: Mon, 20 May 2019 17:18:42 +1000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <20190520071618.1722-1-fbarrat@linux.ibm.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-AU Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 x-cbid: 19052007-0008-0000-0000-000002E8771C X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19052007-0009-0000-0000-00002255275A Message-Id: <1916d739-49b2-a5da-6021-a5c9630947fa@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-05-20_04:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=952 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1905200053 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: clombard@linux.ibm.com Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Acked-by: Andrew Donnellan On 20/5/19 5:16 pm, Frederic Barrat wrote: > If we couldn't fully init a context, we were leaking memory. > > Fixes: b9721d275cc2 ("ocxl: Allow external drivers to use OpenCAPI contexts") > Signed-off-by: Frederic Barrat > --- > > Changelog: > v2: reset context pointer in case of allocation failure (Andrew) > > drivers/misc/ocxl/context.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/misc/ocxl/context.c b/drivers/misc/ocxl/context.c > index bab9c9364184..24e4fb010275 100644 > --- a/drivers/misc/ocxl/context.c > +++ b/drivers/misc/ocxl/context.c > @@ -22,6 +22,8 @@ int ocxl_context_alloc(struct ocxl_context **context, struct ocxl_afu *afu, > afu->pasid_base + afu->pasid_max, GFP_KERNEL); > if (pasid < 0) { > mutex_unlock(&afu->contexts_lock); > + kfree(*context); > + *context = NULL; > return pasid; > } > afu->pasid_count++; > -- Andrew Donnellan OzLabs, ADL Canberra ajd@linux.ibm.com IBM Australia Limited