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 X-Spam-Level: X-Spam-Status: No, score=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,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 0CD4EC433E6 for ; Tue, 2 Feb 2021 09:11:46 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 687EF64E2B for ; Tue, 2 Feb 2021 09:11:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 687EF64E2B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.ibm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id E038A6B0074; Tue, 2 Feb 2021 04:11:44 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id DB48F6B0078; Tue, 2 Feb 2021 04:11:44 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id BED4B6B0072; Tue, 2 Feb 2021 04:11:44 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0021.hostedemail.com [216.40.44.21]) by kanga.kvack.org (Postfix) with ESMTP id 9B7F86B0072 for ; Tue, 2 Feb 2021 04:11:44 -0500 (EST) Received: from smtpin23.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 5D9A3181AEF1A for ; Tue, 2 Feb 2021 09:11:44 +0000 (UTC) X-FDA: 77772760128.23.cows67_5c14e32275c9 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin23.hostedemail.com (Postfix) with ESMTP id 3FAEF37606 for ; Tue, 2 Feb 2021 09:11:44 +0000 (UTC) X-HE-Tag: cows67_5c14e32275c9 X-Filterd-Recvd-Size: 5073 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by imf28.hostedemail.com (Postfix) with ESMTP for ; Tue, 2 Feb 2021 09:11:43 +0000 (UTC) Received: from pps.filterd (m0098394.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 112927FQ125477; Tue, 2 Feb 2021 04:11:30 -0500 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=unpid1XboFIP7xQdeLDjgLlxdIrVjLZI6BD7wO6EMUM=; b=LQ6tFnwEiuIYJ+8DvaEyWpnJ9d87DD7ygdGWb8e31V1TswRSLq9cY8aYwgYmoDAHUqd4 wi/+JtX3DL0TxR9VWNYCeVMTGuCGAd3XEqek60bF2RF2m0NerQ7e9oLISW5JzG2gWPkJ UIRkBGQiMwKP4DIVDzPToVKVXxTS25G6dG6NcmidPLet1gYImgApmw6owhikxfQrRULO c4hkyo2kt3wG5vNZFEWEjKJ/dkQPGJcxWG8CFJaCh8OcOOCME7NKZcrMRWw0FNPTjx6h KoGJJsolAjUq3n39n6b4QPY58FKAOYSTwtLfFp/F7jln+m4YG3OQtBty48JW0+ZujX6V 6Q== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 36f38ch6kb-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 02 Feb 2021 04:11:30 -0500 Received: from m0098394.ppops.net (m0098394.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.36/8.16.0.36) with SMTP id 112959O6140319; Tue, 2 Feb 2021 04:11:29 -0500 Received: from ppma03wdc.us.ibm.com (ba.79.3fa9.ip4.static.sl-reverse.com [169.63.121.186]) by mx0a-001b2d01.pphosted.com with ESMTP id 36f38ch6jy-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 02 Feb 2021 04:11:29 -0500 Received: from pps.filterd (ppma03wdc.us.ibm.com [127.0.0.1]) by ppma03wdc.us.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 112987s4031104; Tue, 2 Feb 2021 09:11:28 GMT Received: from b01cxnp23032.gho.pok.ibm.com (b01cxnp23032.gho.pok.ibm.com [9.57.198.27]) by ppma03wdc.us.ibm.com with ESMTP id 36f2nwrfmq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 02 Feb 2021 09:11:28 +0000 Received: from b01ledav001.gho.pok.ibm.com (b01ledav001.gho.pok.ibm.com [9.57.199.106]) by b01cxnp23032.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 1129BShO28901792 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 2 Feb 2021 09:11:28 GMT Received: from b01ledav001.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3A5482805E; Tue, 2 Feb 2021 09:11:28 +0000 (GMT) Received: from b01ledav001.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 207E428058; Tue, 2 Feb 2021 09:11:25 +0000 (GMT) Received: from skywalker.ibmuc.com (unknown [9.199.35.92]) by b01ledav001.gho.pok.ibm.com (Postfix) with ESMTP; Tue, 2 Feb 2021 09:11:24 +0000 (GMT) From: "Aneesh Kumar K.V" To: linux-mm@kvack.org, akpm@linux-foundation.org Cc: mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org, kaleshsingh@google.com, peterz@infradead.org, joel@joelfernandes.org, "Aneesh Kumar K.V" Subject: [RFC PATCH 2/6] selftest/mremap_test: Avoid crash with static build Date: Tue, 2 Feb 2021 14:41:12 +0530 Message-Id: <20210202091116.196134-2-aneesh.kumar@linux.ibm.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210202091116.196134-1-aneesh.kumar@linux.ibm.com> References: <20210202091116.196134-1-aneesh.kumar@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369,18.0.737 definitions=2021-02-02_04:2021-01-29,2021-02-02 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 impostorscore=0 bulkscore=0 malwarescore=0 mlxscore=0 phishscore=0 mlxlogscore=999 clxscore=1011 suspectscore=0 adultscore=0 lowpriorityscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2102020059 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: With a large mmap map size, we can overlap with the text area and using MAP_FIXED results in unmapping that area. Switch to MAP_FIXED_NOREPLACE and handle the EEXIST error. Signed-off-by: Aneesh Kumar K.V --- tools/testing/selftests/vm/mremap_test.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/vm/mremap_test.c b/tools/testing/sel= ftests/vm/mremap_test.c index c9a5461eb786..0624d1bd71b5 100644 --- a/tools/testing/selftests/vm/mremap_test.c +++ b/tools/testing/selftests/vm/mremap_test.c @@ -75,9 +75,10 @@ static void *get_source_mapping(struct config c) retry: addr +=3D c.src_alignment; src_addr =3D mmap((void *) addr, c.region_size, PROT_READ | PROT_WRITE, - MAP_FIXED | MAP_ANONYMOUS | MAP_SHARED, -1, 0); + MAP_FIXED_NOREPLACE | MAP_ANONYMOUS | MAP_SHARED, + -1, 0); if (src_addr =3D=3D MAP_FAILED) { - if (errno =3D=3D EPERM) + if (errno =3D=3D EPERM || errno =3D=3D EEXIST) goto retry; goto error; } --=20 2.29.2