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 Received: from picard.linux.it (picard.linux.it [213.254.12.146]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0AA9FC3DA7A for ; Sun, 25 Dec 2022 15:44:13 +0000 (UTC) Received: from picard.linux.it (localhost [IPv6:::1]) by picard.linux.it (Postfix) with ESMTP id A80333CB8CF for ; Sun, 25 Dec 2022 16:44:10 +0100 (CET) Received: from in-4.smtp.seeweb.it (in-4.smtp.seeweb.it [217.194.8.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384) server-digest SHA384) (No client certificate requested) by picard.linux.it (Postfix) with ESMTPS id 24A523CB8CD for ; Sun, 25 Dec 2022 16:42:58 +0100 (CET) Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by in-4.smtp.seeweb.it (Postfix) with ESMTPS id D4D26100035B for ; Sun, 25 Dec 2022 16:42:57 +0100 (CET) Received: from pps.filterd (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 2BPFfP5t027874; Sun, 25 Dec 2022 15:42:55 GMT 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=U87AYB1+jZm4kfnmqqbLCELiqLZJMo7qsN6EDU/hrv4=; b=V1/N7d7o+sof3v9q19xNu1w776rW19SKyrex0tKVCqHRFbypeu4BX9Z5ODz3/mixa1CZ q7OJsvyGfhlUwbbdb4hWRCz55kjvY2owC66M77iiEDz1GcI9VIL/B+9YUoSe/aVLS4Sk No2F2swkYW5FFCzvyxfXHarbN1oEg8yCXy0u0C+BzATUcilL+ds9FEFGSfpBsz29cQ1s sA8ag7zSs9p4JJDg9a3bRHw1UfBceLO35Ac3BPxFLfkPUf+DPX8ayHyg8ns0D0wqBk9F KeGfYRnex5FdkdepYXatSck+h8SqKRqtqzSuJsalShdrhu8wCA/Sq/f8GCrqPNk2OyUr Cg== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3mpscp00gc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sun, 25 Dec 2022 15:42:55 +0000 Received: from m0098399.ppops.net (m0098399.ppops.net [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 2BPFgti8002315; Sun, 25 Dec 2022 15:42:55 GMT Received: from ppma01fra.de.ibm.com (46.49.7a9f.ip4.static.sl-reverse.com [159.122.73.70]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3mpscp00fr-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sun, 25 Dec 2022 15:42:54 +0000 Received: from pps.filterd (ppma01fra.de.ibm.com [127.0.0.1]) by ppma01fra.de.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 2BOFcZXX028628; Sun, 25 Dec 2022 15:42:52 GMT Received: from smtprelay06.fra02v.mail.ibm.com ([9.218.2.230]) by ppma01fra.de.ibm.com (PPS) with ESMTPS id 3mns2691rd-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sun, 25 Dec 2022 15:42:52 +0000 Received: from smtpav04.fra02v.mail.ibm.com (smtpav04.fra02v.mail.ibm.com [10.20.54.103]) by smtprelay06.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 2BPFgmsW24576380 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sun, 25 Dec 2022 15:42:49 GMT Received: from smtpav04.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D117220043; Sun, 25 Dec 2022 15:42:48 +0000 (GMT) Received: from smtpav04.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7D2A520040; Sun, 25 Dec 2022 15:42:45 +0000 (GMT) Received: from tarunpc.ibmuc.com (unknown [9.43.100.54]) by smtpav04.fra02v.mail.ibm.com (Postfix) with ESMTP; Sun, 25 Dec 2022 15:42:45 +0000 (GMT) From: Tarun Sahu To: ltp@lists.linux.it Date: Sun, 25 Dec 2022 21:12:07 +0530 Message-Id: <20221225154213.84183-8-tsahu@linux.ibm.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20221225154213.84183-1-tsahu@linux.ibm.com> References: <20221225154213.84183-1-tsahu@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: ODJXlXqk-aYes5_1BnmojQVYUUevGqxZ X-Proofpoint-ORIG-GUID: -y8O41NSQuxr2iVYeQRb2havFr6KradE X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.923,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-12-25_12,2022-12-23_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 spamscore=0 clxscore=1015 mlxscore=0 adultscore=0 malwarescore=0 phishscore=0 mlxlogscore=999 lowpriorityscore=0 priorityscore=1501 bulkscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2212250138 X-Virus-Scanned: clamav-milter 0.102.4 at in-4.smtp.seeweb.it X-Virus-Status: Clean Subject: [LTP] [PATCH 07/13] Hugetlb: Migrating libhugetlbfs noresv-reserve-resv-page X-BeenThere: ltp@lists.linux.it X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux Test Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: geetika@linux.ibm.com, sbhat@linux.ibm.com, aneesh.kumar@linux.ibm.com, vaibhav@linux.ibm.com, rpalethorpe@suse.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ltp-bounces+ltp=archiver.kernel.org@lists.linux.it Sender: "ltp" Migrating the libhugetlbfs/testcases/noresv-preserve-resv-page.c test Test Description: Test to preserve a reserved page against no-reserved mapping. If all hugepages are reserved, access to no-reserved shared mapping cause a process die, instead of stealing a hugepage which is reserved for other process. Signed-off-by: Tarun Sahu --- runtest/hugetlb | 1 + testcases/kernel/mem/.gitignore | 1 + .../kernel/mem/hugetlb/hugemmap/hugemmap27.c | 136 ++++++++++++++++++ 3 files changed, 138 insertions(+) create mode 100644 testcases/kernel/mem/hugetlb/hugemmap/hugemmap27.c diff --git a/runtest/hugetlb b/runtest/hugetlb index 55185f2f7..d108542d2 100644 --- a/runtest/hugetlb +++ b/runtest/hugetlb @@ -27,6 +27,7 @@ hugemmap22 hugemmap22 hugemmap23 hugemmap23 hugemmap25 hugemmap25 hugemmap26 hugemmap26 +hugemmap27 hugemmap27 hugemmap05_1 hugemmap05 -m hugemmap05_2 hugemmap05 -s hugemmap05_3 hugemmap05 -s -m diff --git a/testcases/kernel/mem/.gitignore b/testcases/kernel/mem/.gitignore index 4886c6a5f..9862414c6 100644 --- a/testcases/kernel/mem/.gitignore +++ b/testcases/kernel/mem/.gitignore @@ -26,6 +26,7 @@ /hugetlb/hugemmap/hugemmap23 /hugetlb/hugemmap/hugemmap25 /hugetlb/hugemmap/hugemmap26 +/hugetlb/hugemmap/hugemmap27 /hugetlb/hugeshmat/hugeshmat01 /hugetlb/hugeshmat/hugeshmat02 /hugetlb/hugeshmat/hugeshmat03 diff --git a/testcases/kernel/mem/hugetlb/hugemmap/hugemmap27.c b/testcases/kernel/mem/hugetlb/hugemmap/hugemmap27.c new file mode 100644 index 000000000..243a8abf7 --- /dev/null +++ b/testcases/kernel/mem/hugetlb/hugemmap/hugemmap27.c @@ -0,0 +1,136 @@ +// SPDX-License-Identifier: LGPL-2.1-or-later +/* + * Copyright (C) 2013 LG Electronics. + * Author: Joonsoo Kim + */ + +/*\ + * [Description] + * + * Test to preserve a reserved page against no-reserved mapping. If all + * hugepages are reserved, access to no-reserved shared mapping cause a + * process die, instead of stealing a hugepage which is reserved for other + * process. + */ + +#define _GNU_SOURCE +#include +#include +#include +#include +#include +#include + +#include "tst_test.h" + +#ifndef barrier +# ifdef mb + /* Redefining the memory barrier */ +# define barrier() mb() +# else +# define barrier() __asm__ __volatile__ ("" : : : "memory") +# endif +#endif + +#define MNTPOINT "hugetlbfs/" +static long hpage_size; +static int fd1 = -1, fd2 = -1; +static sigjmp_buf sig_escape; +static void *sig_expected = MAP_FAILED; + +static void sig_handler(int signum, siginfo_t *si, void *uc) +{ + (void)uc; + if (signum == SIGBUS) { + if (si->si_addr == sig_expected) + siglongjmp(sig_escape, 1); + tst_res(TFAIL, "SIGBUS somewhere unexpected: %p (expected: %p)", + si->si_addr, sig_expected); + } else + tst_res(TFAIL, "Unexpected signal %s", strsignal(signum)); +} + +static int test_write(void *p) +{ + volatile char *pl = p; + + if (sigsetjmp(sig_escape, 1)) { + /* We got a SIGBUS */ + return 1; + } + + sig_expected = p; + barrier(); + *pl = 's'; + return 0; +} + +static void run_test(void) +{ + int nr_hugepages; + int surp_hugepages; + int ret; + char *p, *q; + struct sigaction sa = { + .sa_sigaction = sig_handler, + .sa_flags = SA_SIGINFO, + }; + + nr_hugepages = SAFE_READ_MEMINFO(MEMINFO_HPAGE_FREE); + + SAFE_SIGACTION(SIGBUS, &sa, NULL); + + p = SAFE_MMAP(NULL, hpage_size * nr_hugepages, + PROT_READ | PROT_WRITE, MAP_SHARED, fd1, 0); + + tst_res(TINFO, "Reserve all hugepages %d", nr_hugepages); + + q = SAFE_MMAP(NULL, hpage_size, + PROT_READ | PROT_WRITE, MAP_SHARED | MAP_NORESERVE, fd2, 0); + + tst_res(TINFO, "Write to %p to steal reserved page", q); + + surp_hugepages = SAFE_READ_MEMINFO(MEMINFO_HPAGE_SURP); + ret = test_write(q); + if (ret == 1) { + tst_res(TPASS, "Successful with SIGSEGV received"); + goto cleanup; + } + /* Provisioning succeeded because of overcommit */ + if (SAFE_READ_MEMINFO(MEMINFO_HPAGE_SURP) == + surp_hugepages + 1) { + tst_res(TPASS, "Successful because of surplus pages"); + goto cleanup; + } + + tst_res(TFAIL, "Steal reserved page"); +cleanup: + SAFE_MUNMAP(p, hpage_size * nr_hugepages); + SAFE_MUNMAP(q, hpage_size); +} + +static void setup(void) +{ + hpage_size = SAFE_READ_MEMINFO(MEMINFO_HPAGE_SIZE)*1024; + fd1 = tst_creat_unlinked(MNTPOINT, 0); + fd2 = tst_creat_unlinked(MNTPOINT, 0); +} + +static void cleanup(void) +{ + if (fd1 >= 0) + SAFE_CLOSE(fd1); + if (fd2 >= 0) + SAFE_CLOSE(fd2); +} + +static struct tst_test test = { + .needs_root = 1, + .mntpoint = MNTPOINT, + .needs_hugetlbfs = 1, + .needs_tmpdir = 1, + .setup = setup, + .cleanup = cleanup, + .test_all = run_test, + .hugepages = {2, TST_NEEDS}, +}; -- 2.31.1 -- Mailing list info: https://lists.linux.it/listinfo/ltp