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Tue, 21 Nov 2023 22:02:11 GMT Received: from smtprelay05.fra02v.mail.ibm.com ([9.218.2.225]) by ppma23.wdc07v.mail.ibm.com (PPS) with ESMTPS id 3uf93kujp0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 21 Nov 2023 22:02:11 +0000 Received: from smtpav06.fra02v.mail.ibm.com (smtpav06.fra02v.mail.ibm.com [10.20.54.105]) by smtprelay05.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 3ALM28jT23790152 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 21 Nov 2023 22:02:08 GMT Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 60BDB20063; Tue, 21 Nov 2023 22:02:08 +0000 (GMT) Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id ED27020065; Tue, 21 Nov 2023 22:02:06 +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 22:02:06 +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 03/33] kmsan: Disable KMSAN when DEFERRED_STRUCT_PAGE_INIT is enabled Date: Tue, 21 Nov 2023 23:00:57 +0100 Message-ID: <20231121220155.1217090-4-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: 0LYcBzq5jSpEB8aw_PlqHWuGzXMh3HEY X-Proofpoint-ORIG-GUID: 9ZT62xIVFrzmlZgxIWxw28Gr_G-BJyeS 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 spamscore=0 lowpriorityscore=0 bulkscore=0 impostorscore=0 suspectscore=0 adultscore=0 malwarescore=0 priorityscore=1501 phishscore=0 clxscore=1015 mlxlogscore=999 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311060000 definitions=main-2311210172 X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: E87C4180025 X-Stat-Signature: fwy1xowms1y89w9b3a3qf1nwskoqxptp X-Rspam-User: X-HE-Tag: 1700604167-312123 X-HE-Meta: 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 HK3y3iaZ NdcUG/9+6uta2w4WNsunxZwUJnWIXO4Fl//IP6H7NADFzpo5EwEUNTJDmIjQoDua/zka51T5OhKU381N4STWv64IUvnnewwfvVXThv4z03YioBW7MkUXo8UF990UzcXmmJb8Xq9nh6ewsrVHjtiVoDjL1pXfZARgmj0q154KNVLPW5i1KULAxURzG3gR8RKcU0M/P9pJ8dQc0DFpqsUfcjta+pp/gC7w+fwd6/bfPqZka5qGge8M50N1EPDuy2ql9v91W5HBSwvTmHoVIB1fu3Nr3NZICgZYPtf84 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000001, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: KMSAN relies on memblock returning all available pages to it (see kmsan_memblock_free_pages()). It partitions these pages into 3 categories: pages available to the buddy allocator, shadow pages and origin pages. This partitioning is static. If new pages appear after kmsan_init_runtime(), it is considered an error. DEFERRED_STRUCT_PAGE_INIT causes this, so mark it as incompatible with KMSAN. Reviewed-by: Alexander Potapenko Signed-off-by: Ilya Leoshkevich --- mm/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/Kconfig b/mm/Kconfig index 89971a894b60..4f2f99339fc7 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -985,6 +985,7 @@ config DEFERRED_STRUCT_PAGE_INIT depends on SPARSEMEM depends on !NEED_PER_CPU_KM depends on 64BIT + depends on !KMSAN select PADATA help Ordinarily all struct pages are initialised during early boot in a -- 2.41.0