From patchwork Wed Jun 2 00:22:10 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ilya Leoshkevich X-Patchwork-Id: 12292537 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 C07BCC4708F for ; Wed, 2 Jun 2021 00:24:14 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2F60261360 for ; Wed, 2 Jun 2021 00:24:14 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2F60261360 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=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:53932 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1loEg8-0006yU-UH for qemu-devel@archiver.kernel.org; Tue, 01 Jun 2021 20:24:12 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:39516) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1loEeO-0004bb-LV; Tue, 01 Jun 2021 20:22:24 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:37500) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1loEeM-000393-M9; Tue, 01 Jun 2021 20:22:24 -0400 Received: from pps.filterd (m0098410.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 15204ofF044100; Tue, 1 Jun 2021 20:22:20 -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=mwofqs4WnABKuOMSYq7kpnKLX4NV9z6/bizzBy9MU/s=; b=YP/c5zx98jPypfR78hOsKCX52nvhIXYYrKJCTWQnBcLVGPtaNWAzC7g29gKeGoXlVMJr 5mA4+oiMW59J9MmlYSkAsSqJc2heywxX8b2zQXGmZYn5h/NKIKOcYnWixf20hU+lF0+f n/ic6nETKnemiwpagG0tQvFODB2zzj/M3gQfvPVz/YOr4K4goGLbMksmswLzcO2xKfhu 4m0PMeG4U1h90dmUGe6vU4AZR5sJ4XuiedumqctqDCp+AdLfYrGq3gNyvSq0++nD6ggH jYqUt2+So8LamkKEu1Dp6kY9jl3ff3EUdZcBACP21iWRbU3S8nySFC0LE1BEKX+VzPkp Xg== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 38wy088hkx-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 01 Jun 2021 20:22:20 -0400 Received: from m0098410.ppops.net (m0098410.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.43/8.16.0.43) with SMTP id 15204qPu044361; Tue, 1 Jun 2021 20:22:19 -0400 Received: from ppma04ams.nl.ibm.com (63.31.33a9.ip4.static.sl-reverse.com [169.51.49.99]) by mx0a-001b2d01.pphosted.com with ESMTP id 38wy088hk7-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 01 Jun 2021 20:22:19 -0400 Received: from pps.filterd (ppma04ams.nl.ibm.com [127.0.0.1]) by ppma04ams.nl.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 1520Cvsc016531; Wed, 2 Jun 2021 00:22:17 GMT Received: from b06avi18626390.portsmouth.uk.ibm.com (b06avi18626390.portsmouth.uk.ibm.com [9.149.26.192]) by ppma04ams.nl.ibm.com with ESMTP id 38ud88a076-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 02 Jun 2021 00:22:17 +0000 Received: from d06av26.portsmouth.uk.ibm.com (d06av26.portsmouth.uk.ibm.com [9.149.105.62]) by b06avi18626390.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 1520LhA021234022 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 2 Jun 2021 00:21:43 GMT Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 105BDAE051; Wed, 2 Jun 2021 00:22:14 +0000 (GMT) Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9C0D7AE045; Wed, 2 Jun 2021 00:22:13 +0000 (GMT) Received: from vm.lan (unknown [9.145.39.144]) by d06av26.portsmouth.uk.ibm.com (Postfix) with ESMTP; Wed, 2 Jun 2021 00:22:13 +0000 (GMT) From: Ilya Leoshkevich To: Richard Henderson , David Hildenbrand , Laurent Vivier , Cornelia Huck Subject: [PATCH v3 2/2] tests/tcg/s390x: Test SIGILL and SIGSEGV handling Date: Wed, 2 Jun 2021 02:22:10 +0200 Message-Id: <20210602002210.3144559-3-iii@linux.ibm.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210602002210.3144559-1-iii@linux.ibm.com> References: <20210602002210.3144559-1-iii@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: 6tJb3niG2YcxLm-9k3lKoU27Xffry2nE X-Proofpoint-ORIG-GUID: 36Bc5SV1eIU0CMTMjeGXtSasTDkXD1iH X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391, 18.0.761 definitions=2021-06-01_12:2021-06-01, 2021-06-01 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 impostorscore=0 lowpriorityscore=0 mlxscore=0 suspectscore=0 malwarescore=0 bulkscore=0 adultscore=0 spamscore=0 mlxlogscore=999 priorityscore=1501 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2106010161 Received-SPF: pass client-ip=148.163.156.1; envelope-from=iii@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Christian Borntraeger , qemu-s390x@nongnu.org, qemu-devel@nongnu.org, Ilya Leoshkevich , Andreas Krebbel Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Verify that s390x-specific uc_mcontext.psw.addr is reported correctly. Signed-off-by: Ilya Leoshkevich --- tests/tcg/s390x/Makefile.target | 1 + tests/tcg/s390x/signal.c | 163 ++++++++++++++++++++++++++++++++ 2 files changed, 164 insertions(+) create mode 100644 tests/tcg/s390x/signal.c diff --git a/tests/tcg/s390x/Makefile.target b/tests/tcg/s390x/Makefile.target index 241ef28f61..cdb7d85316 100644 --- a/tests/tcg/s390x/Makefile.target +++ b/tests/tcg/s390x/Makefile.target @@ -8,3 +8,4 @@ TESTS+=exrl-trtr TESTS+=pack TESTS+=mvo TESTS+=mvc +TESTS+=signal diff --git a/tests/tcg/s390x/signal.c b/tests/tcg/s390x/signal.c new file mode 100644 index 0000000000..c25d7dd019 --- /dev/null +++ b/tests/tcg/s390x/signal.c @@ -0,0 +1,163 @@ +#include +#include +#include +#include +#include +#include + +/* + * Various instructions that generate SIGILL and SIGSEGV. They could have been + * defined in a separate .s file, but this would complicate the build, so the + * inline asm is used instead. + */ + +void illegal_op(void); +void after_illegal_op(void); +asm(".globl\tillegal_op\n" + "illegal_op:\t.byte\t0x00,0x00\n" + "\t.globl\tafter_illegal_op\n" + "after_illegal_op:\tbr\t%r14"); + +void stg(void *dst, unsigned long src); +asm(".globl\tstg\n" + "stg:\tstg\t%r3,0(%r2)\n" + "\tbr\t%r14"); + +void mvc_8(void *dst, void *src); +asm(".globl\tmvc_8\n" + "mvc_8:\tmvc\t0(8,%r2),0(%r3)\n" + "\tbr\t%r14"); + +static void safe_puts(const char *s) +{ + write(0, s, strlen(s)); + write(0, "\n", 1); +} + +enum exception { + exception_operation, + exception_translation, + exception_protection, +}; + +static struct { + int sig; + void *addr; + unsigned long psw_addr; + enum exception exception; +} expected; + +static void handle_signal(int sig, siginfo_t *info, void *ucontext) +{ + void *page; + int err; + + if (sig != expected.sig) { + safe_puts("[ FAILED ] wrong signal"); + _exit(1); + } + + if (info->si_addr != expected.addr) { + safe_puts("[ FAILED ] wrong si_addr"); + _exit(1); + } + + if (((ucontext_t *)ucontext)->uc_mcontext.psw.addr != expected.psw_addr) { + safe_puts("[ FAILED ] wrong psw.addr"); + _exit(1); + } + + switch (expected.exception) { + case exception_translation: + page = mmap(expected.addr, 4096, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0); + if (page != expected.addr) { + safe_puts("[ FAILED ] mmap() failed"); + _exit(1); + } + break; + case exception_protection: + err = mprotect(expected.addr, 4096, PROT_READ | PROT_WRITE); + if (err != 0) { + safe_puts("[ FAILED ] mprotect() failed"); + _exit(1); + } + break; + } +} + +static void check_sigsegv(void *func, enum exception exception, + unsigned long val) +{ + int prot; + unsigned long *page; + unsigned long *addr; + int err; + + prot = exception == exception_translation ? PROT_NONE : PROT_READ; + page = mmap(NULL, 4096, prot, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + assert(page != MAP_FAILED); + if (exception == exception_translation) { + /* Hopefully nothing will be mapped at this address. */ + err = munmap(page, 4096); + assert(err == 0); + } + addr = page + (val & 0x1ff); + + expected.sig = SIGSEGV; + expected.addr = page; + expected.psw_addr = (unsigned long)func; + expected.exception = exception; + if (func == stg) { + stg(addr, val); + } else { + assert(func == mvc_8); + mvc_8(addr, &val); + } + assert(*addr == val); + + err = munmap(page, 4096); + assert(err == 0); +} + +int main(void) +{ + struct sigaction act; + int err; + + memset(&act, 0, sizeof(act)); + act.sa_sigaction = handle_signal; + act.sa_flags = SA_SIGINFO; + err = sigaction(SIGILL, &act, NULL); + assert(err == 0); + err = sigaction(SIGSEGV, &act, NULL); + assert(err == 0); + + safe_puts("[ RUN ] Operation exception"); + expected.sig = SIGILL; + expected.addr = illegal_op; + expected.psw_addr = (unsigned long)after_illegal_op; + expected.exception = exception_operation; + illegal_op(); + safe_puts("[ OK ]"); + + safe_puts("[ RUN ] Translation exception from stg"); + check_sigsegv(stg, exception_translation, 42); + safe_puts("[ OK ]"); + + safe_puts("[ RUN ] Translation exception from mvc"); + check_sigsegv(mvc_8, exception_translation, 4242); + safe_puts("[ OK ]"); + + safe_puts("[ RUN ] Protection exception from stg"); + check_sigsegv(stg, exception_protection, 424242); + safe_puts("[ OK ]"); + + safe_puts("[ RUN ] Protection exception from mvc"); + check_sigsegv(mvc_8, exception_protection, 42424242); + safe_puts("[ OK ]"); + + safe_puts("[ PASSED ]"); + + return 0; +}