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Fri, 4 Aug 2023 23:56:27 +0000 (GMT) Received: from smtpav04.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D21A32004B; Fri, 4 Aug 2023 23:56:26 +0000 (GMT) Received: from heavy.boeblingen.de.ibm.com (unknown [9.179.4.122]) by smtpav04.fra02v.mail.ibm.com (Postfix) with ESMTP; Fri, 4 Aug 2023 23:56:26 +0000 (GMT) From: Ilya Leoshkevich To: Richard Henderson , David Hildenbrand , Thomas Huth Cc: qemu-devel@nongnu.org, qemu-s390x@nongnu.org, Ilya Leoshkevich , qemu-stable@nongnu.org Subject: [PATCH 1/2] target/s390x: Fix VSTL with a large length Date: Sat, 5 Aug 2023 01:55:33 +0200 Message-ID: <20230804235624.263260-1-iii@linux.ibm.com> X-Mailer: git-send-email 2.41.0 MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: heEwG6BSZ_drKvFXY4UbQRVN38EzxDKI X-Proofpoint-ORIG-GUID: kqFWAc4K7pmH0w9rRBwYesJ8BIUhF3n- X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-08-04_21,2023-08-03_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 lowpriorityscore=0 phishscore=0 malwarescore=0 mlxscore=0 priorityscore=1501 clxscore=1015 bulkscore=0 spamscore=0 mlxlogscore=999 adultscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2308040213 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_H5=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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org The length is always truncated to 16 bytes. Do not probe more than that. Cc: qemu-stable@nongnu.org Fixes: 0e0a5b49ad58 ("s390x/tcg: Implement VECTOR STORE WITH LENGTH") Signed-off-by: Ilya Leoshkevich Reviewed-by: David Hildenbrand --- target/s390x/tcg/vec_helper.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/target/s390x/tcg/vec_helper.c b/target/s390x/tcg/vec_helper.c index 48d86722b2d..dafc4c3582c 100644 --- a/target/s390x/tcg/vec_helper.c +++ b/target/s390x/tcg/vec_helper.c @@ -193,7 +193,7 @@ void HELPER(vstl)(CPUS390XState *env, const void *v1, uint64_t addr, uint64_t bytes) { /* Probe write access before actually modifying memory */ - probe_write_access(env, addr, bytes, GETPC()); + probe_write_access(env, addr, MIN(bytes, 16), GETPC()); if (likely(bytes >= 16)) { cpu_stq_data_ra(env, addr, s390_vec_read_element64(v1, 0), GETPC());