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Wed, 19 Jun 2024 15:45:42 +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 v5 25/37] s390/cpacf: Unpoison the results of cpacf_trng() Date: Wed, 19 Jun 2024 17:44:00 +0200 Message-ID: <20240619154530.163232-26-iii@linux.ibm.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240619154530.163232-1-iii@linux.ibm.com> References: <20240619154530.163232-1-iii@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: eRJ1Fir0D1OliqMOkMThbCdRt-m01UDf X-Proofpoint-ORIG-GUID: sHcrT9dgmrwcrd7AfF1kVUbgkO9GX7zc 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=2024-06-19_02,2024-06-19_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 mlxscore=0 malwarescore=0 clxscore=1015 impostorscore=0 adultscore=0 bulkscore=0 phishscore=0 spamscore=0 priorityscore=1501 lowpriorityscore=0 mlxlogscore=780 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2405170001 definitions=main-2406190115 X-Stat-Signature: y1pz9pzfiasfnregqawkj87zzp986m4q X-Rspamd-Queue-Id: 3982B18000C X-Rspam-User: X-Rspamd-Server: rspam10 X-HE-Tag: 1718811957-919936 X-HE-Meta: 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 bgYTq6t7 e6y5lUYNxnCMW7ls2/u62yHNbrel+qr4LqcmlOYAjcdcKt3rCzmhrcU1+DKJJxHGi9/YiYaQyJSZ/IbzGS5JmmNCZ6YUTMuzgrQnH2sDFoO4bKo89WNgBrDM3/yft33MHVVZoUO+gtZF3Jt+3eQgMyr5NP/B7fAavoD4+gM5Nnm9iOsQzNAQh64SAKTGcqjEv+aqKNjJUNY4fmbi/WdwO3PtojOhjlIs1XrxXVSZ/3vxBU40u24YIApZYIufw6SMuSloB96Oy7JfcK1VyV8LlVULYxlPE1cMEc2hAfDtLnfGhZhXcLMmbsrELvl8QTZVDQlO4 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); } /**