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Howlett" , Kees Cook , =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Cc: Alexander Gordeev , Sven Schnelle , Vasily Gorbik , Christian Borntraeger , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-hardening@vger.kernel.org Subject: [PATCH mm-unstable 1/2] mseal sysmap: generic vdso vvar mapping Date: Tue, 11 Mar 2025 13:33:25 +0100 Message-ID: <20250311123326.2686682-2-hca@linux.ibm.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20250311123326.2686682-1-hca@linux.ibm.com> References: <20250311123326.2686682-1-hca@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: MxwBgJQM4sBjzJFJ2-JrRCRRAnWtOPgo X-Proofpoint-ORIG-GUID: MxwBgJQM4sBjzJFJ2-JrRCRRAnWtOPgo X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1093,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-03-11_02,2025-03-11_02,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 bulkscore=0 spamscore=0 mlxlogscore=862 suspectscore=0 phishscore=0 priorityscore=1501 adultscore=0 clxscore=1015 malwarescore=0 impostorscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2502100000 definitions=main-2503110080 X-Rspam-User: X-Rspamd-Queue-Id: 20AEE80016 X-Rspamd-Server: rspam03 X-Stat-Signature: x7w3dyi33j9sgxfzs7xfztezi8si7qui X-HE-Tag: 1741696416-781829 X-HE-Meta: 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 dcAxGPY2 ewV72ivWJr7PQSZ3HxKxy3dzJ+MBnSbOelisKUla6OdsXyORRsEcgxGW37vblkR9Bh7TYjSD0sQ4jmll9JpV9h2d/45ZSqhi8ooSS8wVYT7dRIDo4BqcrdoqFmfqABViLmM9TQj+mQZTTGExV23SxxnljRaqqD+SdUH8tvJLVtADQyOHPVN6/6DT0kQ2fBp3wAIjfstaKx21qf9i93DXKc8lw0Nj//DzK5rnRnTUY7n8I1kbKO5rTC3EkdA== X-Bogosity: Ham, tests=bogofilter, spamicity=0.010361, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: With the introduction of the generic vdso data storage the VM_SEALED_SYSMAP vm flag must be moved from the architecture specific _install_special_mapping() call [1] [2] which maps the vvar mapping to generic code. [1] https://lkml.kernel.org/r/20250305021711.3867874-4-jeffxu@google.com [2] https://lkml.kernel.org/r/20250305021711.3867874-5-jeffxu@google.com Signed-off-by: Heiko Carstens Reviewed-by: Lorenzo Stoakes Reviewed-by: Jeff Xu --- lib/vdso/datastore.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/lib/vdso/datastore.c b/lib/vdso/datastore.c index e227fbbcb796..b7c7386c98a9 100644 --- a/lib/vdso/datastore.c +++ b/lib/vdso/datastore.c @@ -99,7 +99,8 @@ const struct vm_special_mapping vdso_vvar_mapping = { struct vm_area_struct *vdso_install_vvar_mapping(struct mm_struct *mm, unsigned long addr) { return _install_special_mapping(mm, addr, VDSO_NR_PAGES * PAGE_SIZE, - VM_READ | VM_MAYREAD | VM_IO | VM_DONTDUMP | VM_PFNMAP, + VM_READ | VM_MAYREAD | VM_IO | VM_DONTDUMP | + VM_PFNMAP | VM_SEALED_SYSMAP, &vdso_vvar_mapping); } From patchwork Tue Mar 11 12:33:26 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heiko Carstens X-Patchwork-Id: 14011755 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 179E5C282EC for ; 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Tue, 11 Mar 2025 12:33:27 +0000 (GMT) From: Heiko Carstens To: Andrew Morton , Jeff Xu , Lorenzo Stoakes , "Liam R . Howlett" , Kees Cook , =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Cc: Alexander Gordeev , Sven Schnelle , Vasily Gorbik , Christian Borntraeger , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-hardening@vger.kernel.org Subject: [PATCH mm-unstable 2/2] mseal sysmap: enable s390 Date: Tue, 11 Mar 2025 13:33:26 +0100 Message-ID: <20250311123326.2686682-3-hca@linux.ibm.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20250311123326.2686682-1-hca@linux.ibm.com> References: <20250311123326.2686682-1-hca@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: MtQCe0fUy6IfEAWGegeAn-LxBAPpKsgg X-Proofpoint-ORIG-GUID: MtQCe0fUy6IfEAWGegeAn-LxBAPpKsgg X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1093,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-03-11_02,2025-03-11_02,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 bulkscore=0 spamscore=0 mlxlogscore=756 suspectscore=0 phishscore=0 priorityscore=1501 adultscore=0 clxscore=1015 malwarescore=0 impostorscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2502100000 definitions=main-2503110080 X-Rspam-User: X-Rspamd-Queue-Id: C316840012 X-Stat-Signature: c3w7cbo736hm8r8yxow68n6qt9sxn7ia X-Rspamd-Server: rspam10 X-HE-Tag: 1741696417-626660 X-HE-Meta: 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 ncYMH8xJ XrfoyAvdkVlpDCknRFGyxHZdct1uadznzS0/F8gw65zSJOZfmQib37Vqp12QiK3vtnk525fW0bwy7rlN3q175NqMCtpLZaTaNoEkkqg0ulRLz1MgideRHlxBVDb2fIgt0UyROMO2MZpG60ypYcz/e5xqYMuENh1VA97gMJMbnuosDC2UpRHgwBlzrYeM+dJmD9XpG6oOosaClqgE= X-Bogosity: Ham, tests=bogofilter, spamicity=0.001947, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Provide support for CONFIG_MSEAL_SYSTEM_MAPPINGS on s390, covering the vdso. Signed-off-by: Heiko Carstens Reviewed-by: Lorenzo Stoakes Reviewed-by: Jeff Xu --- arch/s390/Kconfig | 1 + arch/s390/kernel/vdso.c | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 608a965e2344..93b880992596 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -141,6 +141,7 @@ config S390 select ARCH_SUPPORTS_DEBUG_PAGEALLOC select ARCH_SUPPORTS_HUGETLBFS select ARCH_SUPPORTS_INT128 if CC_HAS_INT128 && CC_IS_CLANG + select ARCH_SUPPORTS_MSEAL_SYSTEM_MAPPINGS select ARCH_SUPPORTS_NUMA_BALANCING select ARCH_SUPPORTS_PER_VMA_LOCK select ARCH_USE_BUILTIN_BSWAP diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c index 70c8f9ad13cd..430feb1a5013 100644 --- a/arch/s390/kernel/vdso.c +++ b/arch/s390/kernel/vdso.c @@ -80,7 +80,7 @@ static int map_vdso(unsigned long addr, unsigned long vdso_mapping_len) vdso_text_start = vvar_start + VDSO_NR_PAGES * PAGE_SIZE; /* VM_MAYWRITE for COW so gdb can set breakpoints */ vma = _install_special_mapping(mm, vdso_text_start, vdso_text_len, - VM_READ|VM_EXEC| + VM_READ|VM_EXEC|VM_SEALED_SYSMAP| VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC, vdso_mapping); if (IS_ERR(vma)) {