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Wed, 14 Apr 2021 13:41:20 +0000 Received: from b06wcsmtp001.portsmouth.uk.ibm.com (b06wcsmtp001.portsmouth.uk.ibm.com [9.149.105.160]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 13EDfHBq44761412 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 14 Apr 2021 13:41:17 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6DF65A4054; Wed, 14 Apr 2021 13:41:17 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C48EDA405B; Wed, 14 Apr 2021 13:41:16 +0000 (GMT) Received: from vm.lan (unknown [9.145.157.105]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTP; Wed, 14 Apr 2021 13:41:16 +0000 (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=Nm0EveWClpCAV/C4SCzoXVH1PQom2Cgmvk2fkNN9ghk=; b=OHyqeeQCngQumJHcvxg+VQV80XszWBsz6bf53rOCOQ6kgrDYkuYPUKh4p2Xz2d7dYMa/ MNHJYVHFJDKyUUmfY6+5TPLFk6GjbW9pMz5qyvkgXTdJrjy7Sy+NKKzBrTZaCvp4vlJX +Rd1e53LHsAnUnDU3TsFDj1eFaCjGqXUG0RxDicNnYkn0DpIvxvWjqDseLIkyqn668aY iOzG080ohDoG08Goxc6VKEaxRaXhu+yPocG20pSPzTFK0A2Fxp9jgO8bkv+ggz0KJz/L nIKL9SGJv2I4H7iC78JSvoLBoxC271QW0K8Nv+cO3JiXyjGUs+80S/fI7d5jZ2j1ishv Xg== From: Ilya Leoshkevich To: Cornelia Huck , Thomas Huth , Richard Henderson , David Hildenbrand , Paolo Bonzini , Peter Maydell Subject: [PATCH v3 3/3] accel/tcg: Assert that tb->size != 0 after translation Date: Wed, 14 Apr 2021 15:41:12 +0200 Message-Id: <20210414134112.25620-4-iii@linux.ibm.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210414134112.25620-1-iii@linux.ibm.com> References: <20210414134112.25620-1-iii@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: WWi6Ae18nIGEudMgZTwSLnwLn1rApS4p X-Proofpoint-GUID: E4kpZITWflGC-SeIK_YdII7RlzmZ1Bal X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391, 18.0.761 definitions=2021-04-14_07:2021-04-14, 2021-04-14 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 mlxlogscore=999 spamscore=0 priorityscore=1501 impostorscore=0 suspectscore=0 malwarescore=0 bulkscore=0 mlxscore=0 phishscore=0 lowpriorityscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104060000 definitions=main-2104140093 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=148.163.156.1; envelope-from=iii@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, 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-arm@nongnu.org, qemu-devel@nongnu.org, Ilya Leoshkevich Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" If arch-specific code generates a translation block of size 0, tb_gen_code() may generate a spurious exception. Add an assertion in order to catch such situations early. Signed-off-by: Ilya Leoshkevich Reviewed-by: David Hildenbrand --- accel/tcg/translate-all.c | 1 + 1 file changed, 1 insertion(+) diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c index ba6ab09790..93b2dae112 100644 --- a/accel/tcg/translate-all.c +++ b/accel/tcg/translate-all.c @@ -1913,6 +1913,7 @@ TranslationBlock *tb_gen_code(CPUState *cpu, =20 tcg_ctx->cpu =3D env_cpu(env); gen_intermediate_code(cpu, tb, max_insns); + assert(tb->size !=3D 0); tcg_ctx->cpu =3D NULL; max_insns =3D tb->icount; =20 --=20 2.29.2