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Thu, 6 Aug 2026 19:02:24 +0000 (GMT) From: Ilya Leoshkevich To: Harald Freudenberger , Holger Dengler , Heiko Carstens , Vasily Gorbik , Alexander Gordeev Cc: linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, Ilya Leoshkevich Subject: [PATCH] s390/cpacf: Unpoison query results Date: Thu, 6 Aug 2026 21:02:07 +0200 Message-ID: <20260806190223.3292580-1-iii@linux.ibm.com> X-Mailer: git-send-email 2.55.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Authority-Analysis: v=2.4 cv=SYrHsPRu c=1 sm=1 tr=0 ts=6a74da46 cx=c_pps a=5BHTudwdYE3Te8bg5FgnPg==:117 a=5BHTudwdYE3Te8bg5FgnPg==:17 a=Sv0fKeRqtYgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=U7nrCbtTmkRpXpFmAIza:22 a=VnNF1IyMAAAA:8 a=rrDz3YSv9LhRwPo8zLoA:9 X-Proofpoint-Spam-Info: AW1haW4tMjYwODA2MDE0NyBTYWx0ZWRfX3NSGEfJPLoSe lC77Y7La5nfmlMINVK7FKF6RcaRNA/korijEf1bVGaWIB5qqMImjjlPnH44XwE8OBlTJMlb8y3o q4f9wE8qrRbYjNHfwVnmMBqFC8M/djk= X-Proofpoint-ORIG-GUID: E87Vxk-x9EnJEI4Tv790Q5pXLvb5rJoI X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODA2MDE0NyBTYWx0ZWRfXxYcEdefoA399 1H/npJNQMhMKypPC8supdGea1+2r+hTsinDckhrfmoyj4awbJSgjjNL3bqBvzMcjrJcwcp0snT3 zfTj4t+ydBuA30V4GTjAfTqJ2YchyqH14tjz0g7Hk6Q0l5iEKMQPJxwRntrzd6PikSGlTzXpoct cB9QIrZmcci+6RCQ4/k9d1d3HQJowHfjDTjShtAJuOr0Fj8gHzut/zLIQsCg1QcR059HfBSqi0Q LMz7UBjTdnYdGPvDXMSe1+L/qYrEuMIahtSz15B/xgiy2/Gj27z/HOOLs3s9Kccku+Juo55OTW4 Cdbd7dJrWk51KArCstouzhKs1fCJGOoZmqBkYxBo6rIn1+U0wMc9/s65WrhnZ9g+gX5lmB0fy53 WeEX454rFL6eu/3OXqPqZh+zY92fK01lXxfnwpnqiF0+F9mdSLxvi5jXbm+SdX9SzkdNfDilIJS H5v41hKxa0PK+NumP0Q== X-Proofpoint-GUID: E87Vxk-x9EnJEI4Tv790Q5pXLvb5rJoI X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-06_02,2026-08-06_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 malwarescore=0 priorityscore=1501 lowpriorityscore=0 suspectscore=0 bulkscore=0 impostorscore=0 phishscore=0 spamscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608060147 Stop KMSAN from complaining about query results being uninitialized. Signed-off-by: Ilya Leoshkevich --- arch/s390/include/asm/cpacf.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/s390/include/asm/cpacf.h b/arch/s390/include/asm/cpacf.h index a83683169d98d..d4128d3fd5138 100644 --- a/arch/s390/include/asm/cpacf.h +++ b/arch/s390/include/asm/cpacf.h @@ -301,6 +301,7 @@ static __always_inline void __cpacf_query(unsigned int opcode, cpacf_mask_t *mask) { __cpacf_query_insn(opcode, mask, CPACF_FC_QUERY); + kmsan_unpoison_memory(mask, sizeof(*mask)); } static __always_inline int __cpacf_check_opcode(unsigned int opcode) @@ -370,6 +371,7 @@ static __always_inline int cpacf_query_func(unsigned int opcode, static __always_inline void __cpacf_qai(unsigned int opcode, cpacf_qai_t *qai) { __cpacf_query_insn(opcode, qai, CPACF_FC_QUERY_AUTH_INFO); + kmsan_unpoison_memory(qai, sizeof(*qai)); } /** -- 2.55.0