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Fri, 21 Jun 2024 11:37:24 +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 v7 26/38] s390/cpacf: Unpoison the results of cpacf_trng() Date: Fri, 21 Jun 2024 13:35:10 +0200 Message-ID: <20240621113706.315500-27-iii@linux.ibm.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240621113706.315500-1-iii@linux.ibm.com> References: <20240621113706.315500-1-iii@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: I7H6xZfZqOjODjPNPTm_ct-_p8FpZMwq X-Proofpoint-GUID: 3FJaVmD-eWbIAIcr6r1ict5AbgqpNVvY X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-06-21_04,2024-06-21_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 malwarescore=0 phishscore=0 clxscore=1015 priorityscore=1501 impostorscore=0 mlxlogscore=780 suspectscore=0 mlxscore=0 adultscore=0 bulkscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2406140001 definitions=main-2406210084 X-Stat-Signature: nrd5pbp67armomgonzjqph7me55drfxi X-Rspam-User: X-Rspamd-Queue-Id: A004514000C X-Rspamd-Server: rspam02 X-HE-Tag: 1718969858-231015 X-HE-Meta: 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 JWAUGsfo zk+w4EW8/7qUDNUc5zk6IGOtBsavycztev7I3Kz2GsITn8RsNF3eVoc7KwrvmpNrI+uFE/3kXYn+mbpL+L6Tq8yCwhcd31zoxH5QjAP2g0m1AaduSajbP3/6lm9BOsChyBGJD40V3STvdcWDlWYyl/Xf6+0aolFhFixCnh4zl0Q58i6lAmdqWcUNvyEgPVrb7nuc/fQouZDZhrEUc9BbkocSENbPZR7S/W3XCKG1/22dans5zZHFAAxpiQE4pYytKXEMbxk2aCa9RxXy8HOYw4xq+T6HY/c1r+6P1EjSnJsroYm/LeBN1dySMb2EYlxGC3R5h/rvcdr8EnVlVWIAH99zMu+JH+l8jcxuKwOlHoLKkdk3W9DT5WSDQoJSF70N7AiMemVhmhbMODJzDGQZL0grrNA== 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 Acked-by: Heiko Carstens 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 c786538e397c..dae8843b164f 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 @@ -542,6 +543,8 @@ 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); } /**