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Tue, 21 Nov 2023 22:02:51 GMT Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 29D0C20065; Tue, 21 Nov 2023 22:02:51 +0000 (GMT) Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A629020063; Tue, 21 Nov 2023 22:02:49 +0000 (GMT) Received: from heavy.boeblingen.de.ibm.com (unknown [9.179.23.98]) by smtpav06.fra02v.mail.ibm.com (Postfix) with ESMTP; Tue, 21 Nov 2023 22:02:49 +0000 (GMT) From: Ilya Leoshkevich To: Alexander Gordeev , Alexander Potapenko , Andrew Morton , Christoph Lameter , David Rientjes , Heiko Carstens , Joonsoo Kim , Marco Elver , Masami Hiramatsu , Pekka Enberg , Steven Rostedt , Vasily Gorbik , Vlastimil Babka Cc: Christian Borntraeger , Dmitry Vyukov , Hyeonggon Yoo <42.hyeyoo@gmail.com>, kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-s390@vger.kernel.org, linux-trace-kernel@vger.kernel.org, Mark Rutland , Roman Gushchin , Sven Schnelle , Ilya Leoshkevich Subject: [PATCH v2 25/33] s390/cpacf: Unpoison the results of cpacf_trng() Date: Tue, 21 Nov 2023 23:01:19 +0100 Message-ID: <20231121220155.1217090-26-iii@linux.ibm.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231121220155.1217090-1-iii@linux.ibm.com> References: <20231121220155.1217090-1-iii@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: 4wGsEei1adE6EAeSSPCgAcoSTHesl0xI X-Proofpoint-ORIG-GUID: XlcEUetpo-dhFdRyXdztfF-8Z86qF_LJ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.987,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-21_12,2023-11-21_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 priorityscore=1501 suspectscore=0 adultscore=0 malwarescore=0 impostorscore=0 mlxscore=0 bulkscore=0 phishscore=0 clxscore=1015 spamscore=0 mlxlogscore=755 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311060000 definitions=main-2311210172 X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: E000520027 X-Stat-Signature: rxh58exkgzunbbikzgikkioai15biw47 X-Rspam-User: X-HE-Tag: 1700604184-112946 X-HE-Meta: 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 EaYJ3+j3 9VNUlF6nx1UDtZ79VYVFLKgHpeGsKLuysFf3dgU+6GZ1NAdSKNnOBdYUwz4WJArLmbM18fhk8lBNmETpXHSysw8E6IKzqZeSK70S7QQ5Vlialf8jPkm2B7yJSF8OHGDfNwo/RwItAdzwUHI4d3R1yDnE0KX7k4SqkEHSM8rnWTHBEexoKKLkwRLzVNNQKg3BAobLaRlS5PcksYsV0iWyzQTy+kkvVYVJCOdxQI20T18gz2Ak/vSk+aHoj1ezJnOBBlLiCrevLAm/olLo= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000244, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Prevent KMSAN from complaining about buffers filled by cpacf_trng() being uninitialized. Tested-by: Alexander Gordeev 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 b378e2b57ad8..a72b92770c4b 100644 --- a/arch/s390/include/asm/cpacf.h +++ b/arch/s390/include/asm/cpacf.h @@ -473,6 +473,8 @@ static inline void cpacf_trng(u8 *ucbuf, unsigned long ucbuf_len, : [ucbuf] "+&d" (u.pair), [cbuf] "+&d" (c.pair) : [fc] "K" (CPACF_PRNO_TRNG), [opc] "i" (CPACF_PRNO) : "cc", "memory", "0"); + kmsan_unpoison_memory(ucbuf, ucbuf_len); + kmsan_unpoison_memory(cbuf, cbuf_len); } /** -- 2.41.0