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Wed, 13 Dec 2023 23:36:45 GMT Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9BEF220040; Wed, 13 Dec 2023 23:36:45 +0000 (GMT) Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 34F8220043; Wed, 13 Dec 2023 23:36:44 +0000 (GMT) Received: from heavy.boeblingen.de.ibm.com (unknown [9.171.70.156]) by smtpav02.fra02v.mail.ibm.com (Postfix) with ESMTP; Wed, 13 Dec 2023 23:36:44 +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 v3 23/34] s390/cpacf: Unpoison the results of cpacf_trng() Date: Thu, 14 Dec 2023 00:24:43 +0100 Message-ID: <20231213233605.661251-24-iii@linux.ibm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231213233605.661251-1-iii@linux.ibm.com> References: <20231213233605.661251-1-iii@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: 0dfgWLOx15d8NabICqrWpXu-GD2TJBSN X-Proofpoint-ORIG-GUID: YuP1Sp6QRPB7FpPhup6bxOwBsE2f0Wqq X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-13_14,2023-12-13_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 adultscore=0 clxscore=1015 bulkscore=0 mlxscore=0 spamscore=0 suspectscore=0 impostorscore=0 mlxlogscore=768 phishscore=0 lowpriorityscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2312130167 X-Rspamd-Queue-Id: B6A49120024 X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: ikcre6oxsgx1jyqg7kwornxwbsxnewnz X-HE-Tag: 1702510618-278738 X-HE-Meta: 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 vZ35WxYS Mg1f94s1QZnRxSgfwywvxg0s7e1kX+uelQK/jSKGxFb3bBq26e+fv37L3n2yQdiGMXqDY2H6Znr7AbXxPoE/4HdkaBUl4tynibP7xaH0sGhLbFiMVTioI5UYqNvRXN2bn01+8m1x1nYEhpzKAtQ98AnDugAjBv7mWrpuZ3YW8dh7Bj8sWPveYJZv0gx2Jmui/SiCZkis/2B8qLpN8nNUmHuIbqeHqZniy/ouqgq40Cu4eHKBpIbU7PWy3rvT+5lVZMt3ZluQq8lVrG4WYMZh+EvPZkS4M3Gg/fcbE X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, 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 Reviewed-by: Alexander Potapenko Signed-off-by: Ilya Leoshkevich --- arch/s390/include/asm/cpacf.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/s390/include/asm/cpacf.h b/arch/s390/include/asm/cpacf.h index b378e2b57ad8..2bb6b4e7e082 100644 --- a/arch/s390/include/asm/cpacf.h +++ b/arch/s390/include/asm/cpacf.h @@ -12,6 +12,7 @@ #define _ASM_S390_CPACF_H #include +#include /* * Instruction opcodes for the CPACF instructions @@ -473,6 +474,8 @@ 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); } /** -- 2.43.0