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[148.163.156.1]) by mx.google.com with ESMTPS id z20-20020a1709028f9400b001d7204a84ddsi5439629plo.499.2024.01.29.01.34.27 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 29 Jan 2024 01:34:27 -0800 (PST) Received-SPF: pass (google.com: domain of iii@linux.ibm.com designates 148.163.156.1 as permitted sender) client-ip=148.163.156.1; Authentication-Results: mx.google.com; dkim=pass header.i=@ibm.com header.s=pp1 header.b=AR83oh47; spf=pass (google.com: domain of iii@linux.ibm.com designates 148.163.156.1 as permitted sender) smtp.mailfrom=iii@linux.ibm.com; dmarc=pass (p=REJECT sp=NONE dis=NONE) header.from=ibm.com Received: from pps.filterd (m0353729.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 40T9WL0W001658; Mon, 29 Jan 2024 09:34:26 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=hWf8HnN4xTze2R4Ey95SXMooKjiKjraimhDJQ1ivWmM=; b=AR83oh47LESTxXIcE6VZ0eyak6DyZyvRxykd/GknoVq46qIyHucjBGiqyLTiNpt1RuWu q7mkGvY9X7HVjZ+WJwPnIYURB5S41juGmTOkLsRgfzZ8jIO0w1r6tOYqVALBzsKJeM8v BRxb1lZ1FPAA0LRaHlPZdtnfSnXap9Df/gwd6+qF5fVROaW7X6VwtSLd1iz3Bg8cABaw AB9KvEJ6H0/MU8TKqFN+AZKMm9em8SRe4jox60X98Pwed6BfthB6hNfa3I5pznNsdr46 IuR3d7KyrKmJkoR77VPmc2HnnwWbxsNLXXOwYlMhdlUSdEOVhMjCoHJWXbVUpNRC+Sma gg== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3vx9fkr1cj-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 29 Jan 2024 09:34:26 +0000 Received: from m0353729.ppops.net (m0353729.ppops.net [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 40T9Wn0n002818; Mon, 29 Jan 2024 09:34:26 GMT Received: from ppma13.dal12v.mail.ibm.com (dd.9e.1632.ip4.static.sl-reverse.com [50.22.158.221]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3vx9fkr1c8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 29 Jan 2024 09:34:25 +0000 Received: from pps.filterd (ppma13.dal12v.mail.ibm.com [127.0.0.1]) by ppma13.dal12v.mail.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 40T6EXEg010884; Mon, 29 Jan 2024 09:34:25 GMT Received: from smtprelay06.fra02v.mail.ibm.com ([9.218.2.230]) by ppma13.dal12v.mail.ibm.com (PPS) with ESMTPS id 3vweck70b2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 29 Jan 2024 09:34:24 +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 40T9YNbu43909844 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 29 Jan 2024 09:34:23 GMT Received: from smtpav04.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2D3A320043; Mon, 29 Jan 2024 09:34:23 +0000 (GMT) Received: from smtpav04.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 94D9220040; Mon, 29 Jan 2024 09:34:22 +0000 (GMT) Received: from heavy.ibm.com (unknown [9.179.7.240]) by smtpav04.fra02v.mail.ibm.com (Postfix) with ESMTP; Mon, 29 Jan 2024 09:34:22 +0000 (GMT) From: Ilya Leoshkevich To: Richard Henderson , Peter Maydell , =?UTF-8?q?Alex=20Benn=C3=A9e?= , David Hildenbrand Cc: Paolo Bonzini , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , qemu-devel@nongnu.org, qemu-arm@nongnu.org, qemu-s390x@nongnu.org, Ilya Leoshkevich Subject: [PATCH v4 3/3] tests/tcg: Add the PROT_NONE gdbstub test Date: Mon, 29 Jan 2024 10:32:16 +0100 Message-ID: <20240129093410.3151-4-iii@linux.ibm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240129093410.3151-1-iii@linux.ibm.com> References: <20240129093410.3151-1-iii@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: JkubJDxknbuiHi_AWmSGSWlB9tynwuM3 X-Proofpoint-ORIG-GUID: u_0e3XFw6uXLKWdwZcgslyCQwu4Un5FL X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-01-29_05,2024-01-25_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 impostorscore=0 mlxscore=0 malwarescore=0 clxscore=1015 adultscore=0 bulkscore=0 spamscore=0 lowpriorityscore=0 phishscore=0 mlxlogscore=907 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2401290068 X-TUID: OL9LnEF9E4gv Make sure that qemu gdbstub, like gdbserver, allows reading from and writing to PROT_NONE pages. Signed-off-by: Ilya Leoshkevich --- tests/tcg/multiarch/Makefile.target | 9 +++++- tests/tcg/multiarch/gdbstub/prot-none.py | 36 +++++++++++++++++++++ tests/tcg/multiarch/prot-none.c | 40 ++++++++++++++++++++++++ 3 files changed, 84 insertions(+), 1 deletion(-) create mode 100644 tests/tcg/multiarch/gdbstub/prot-none.py create mode 100644 tests/tcg/multiarch/prot-none.c diff --git a/tests/tcg/multiarch/Makefile.target b/tests/tcg/multiarch/Makefile.target index d31ba8d6ae4..315a2e13588 100644 --- a/tests/tcg/multiarch/Makefile.target +++ b/tests/tcg/multiarch/Makefile.target @@ -101,13 +101,20 @@ run-gdbstub-registers: sha512 --bin $< --test $(MULTIARCH_SRC)/gdbstub/registers.py, \ checking register enumeration) +run-gdbstub-prot-none: prot-none + $(call run-test, $@, env PROT_NONE_PY=1 $(GDB_SCRIPT) \ + --gdb $(GDB) \ + --qemu $(QEMU) --qargs "$(QEMU_OPTS)" \ + --bin $< --test $(MULTIARCH_SRC)/gdbstub/prot-none.py, \ + accessing PROT_NONE memory) + else run-gdbstub-%: $(call skip-test, "gdbstub test $*", "need working gdb with $(patsubst -%,,$(TARGET_NAME)) support") endif EXTRA_RUNS += run-gdbstub-sha1 run-gdbstub-qxfer-auxv-read \ run-gdbstub-proc-mappings run-gdbstub-thread-breakpoint \ - run-gdbstub-registers + run-gdbstub-registers run-gdbstub-prot-none # ARM Compatible Semi Hosting Tests # diff --git a/tests/tcg/multiarch/gdbstub/prot-none.py b/tests/tcg/multiarch/gdbstub/prot-none.py new file mode 100644 index 00000000000..e829d3ebc5f --- /dev/null +++ b/tests/tcg/multiarch/gdbstub/prot-none.py @@ -0,0 +1,36 @@ +"""Test that GDB can access PROT_NONE pages. + +This runs as a sourced script (via -x, via run-test.py). + +SPDX-License-Identifier: GPL-2.0-or-later +""" +import ctypes +from test_gdbstub import main, report + + +def probe_proc_self_mem(): + buf = ctypes.create_string_buffer(b'aaa') + try: + with open("/proc/self/mem", "rb") as fp: + fp.seek(ctypes.addressof(buf)) + return fp.read(3) == b'aaa' + except OSError: + return False + + +def run_test(): + """Run through the tests one by one""" + if not probe_proc_self_mem: + print("SKIP: /proc/self/mem is not usable") + exit(0) + gdb.Breakpoint("break_here") + gdb.execute("continue") + val = gdb.parse_and_eval("*(char[2] *)q").string() + report(val == "42", "{} == 42".format(val)) + gdb.execute("set *(char[3] *)q = \"24\"") + gdb.execute("continue") + exitcode = int(gdb.parse_and_eval("$_exitcode")) + report(exitcode == 0, "{} == 0".format(exitcode)) + + +main(run_test) diff --git a/tests/tcg/multiarch/prot-none.c b/tests/tcg/multiarch/prot-none.c new file mode 100644 index 00000000000..dc56aadb3c5 --- /dev/null +++ b/tests/tcg/multiarch/prot-none.c @@ -0,0 +1,40 @@ +/* + * Test that GDB can access PROT_NONE pages. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ +#include +#include +#include +#include +#include + +void break_here(void *q) +{ +} + +int main(void) +{ + long pagesize = sysconf(_SC_PAGESIZE); + void *p, *q; + int err; + + p = mmap(NULL, pagesize * 2, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + assert(p != MAP_FAILED); + q = p + pagesize - 1; + strcpy(q, "42"); + + err = mprotect(p, pagesize * 2, PROT_NONE); + assert(err == 0); + + break_here(q); + + err = mprotect(p, pagesize * 2, PROT_READ); + assert(err == 0); + if (getenv("PROT_NONE_PY")) { + assert(strcmp(q, "24") == 0); + } + + return EXIT_SUCCESS; +} -- 2.43.0