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Tue, 2 Jan 2024 15:05:59 GMT Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 733B920040; Tue, 2 Jan 2024 15:05:59 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6701720043; Tue, 2 Jan 2024 15:05:58 +0000 (GMT) Received: from osiris (unknown [9.171.22.30]) by smtpav03.fra02v.mail.ibm.com (Postfix) with ESMTPS; Tue, 2 Jan 2024 15:05:58 +0000 (GMT) Date: Tue, 2 Jan 2024 16:05:57 +0100 From: Heiko Carstens To: Ilya Leoshkevich Cc: Alexander Gordeev , Alexander Potapenko , Andrew Morton , Christoph Lameter , David Rientjes , Joonsoo Kim , Marco Elver , Masami Hiramatsu , Pekka Enberg , Steven Rostedt , Vasily Gorbik , Vlastimil Babka , 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 Subject: Re: [PATCH v3 29/34] s390/string: Add KMSAN support Message-ID: <20240102150557.6306-G-hca@linux.ibm.com> References: <20231213233605.661251-1-iii@linux.ibm.com> <20231213233605.661251-30-iii@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20231213233605.661251-30-iii@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-GUID: O5QiWeQIJAvGTp7EVYQbU-a0u6juWUh_ X-Proofpoint-ORIG-GUID: aPmHxOhkMHaWwlCr-kgZMDd0ueILkEpz 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=2024-01-02_04,2024-01-02_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 adultscore=0 phishscore=0 lowpriorityscore=0 impostorscore=0 mlxscore=0 malwarescore=0 spamscore=0 mlxlogscore=910 clxscore=1015 suspectscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2401020117 X-Rspamd-Queue-Id: 5CF2040013 X-Rspam-User: X-Rspamd-Server: rspam11 X-Stat-Signature: h3uh31prqxg1efpz8cbperpiyh94kt4b X-HE-Tag: 1704208490-797742 X-HE-Meta: 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 4kgSr5dy hQQMzXsRCQSxpOY0jlGtYphh1hsknXtBRtEry/ec267uLrw4zKbAGo0PneoTj8BwimvgmFWwd7dOVqdm6brcc/DzQxKeYJ7WxVTo4goSp8tSTaJrSddmwgHzFBcuIylQSxlLw8oAwoqyTiGnzXsXodFEuPSlDshgTqIipCjlOvqoFwezI53gUkEBNWKK/1JN9+XLHf7sIGzI1qJhAfb0QVQEgWZsnD4pxEOvbQxIRBlay0eLC5b6uNHfbXCQMYyTkM1VCZgi9e426aMcSXRtg5UL2SAtuhir2y9l3btLkCIEj5WgyBo2E/J5bUCXyocrCECCbm+iSp8f4QgvR82XPW1OHEQ== 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: On Thu, Dec 14, 2023 at 12:24:49AM +0100, Ilya Leoshkevich wrote: > Add KMSAN support for the s390 implementations of the string functions. > Do this similar to how it's already done for KASAN, except that the > optimized memset{16,32,64}() functions need to be disabled: it's > important for KMSAN to know that they initialized something. > > The way boot code is built with regard to string functions is > problematic, since most files think it's configured with sanitizers, > but boot/string.c doesn't. This creates various problems with the > memset64() definitions, depending on whether the code is built with > sanitizers or fortify. This should probably be streamlined, but in the > meantime resolve the issues by introducing the IN_BOOT_STRING_C macro, > similar to the existing IN_ARCH_STRING_C macro. > > Reviewed-by: Alexander Potapenko > Signed-off-by: Ilya Leoshkevich > --- > arch/s390/boot/string.c | 16 ++++++++++++++++ > arch/s390/include/asm/string.h | 20 +++++++++++++++----- > 2 files changed, 31 insertions(+), 5 deletions(-) Acked-by: Heiko Carstens