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Fri, 12 Jan 2024 20:54:08 -0800 (PST) MIME-Version: 1.0 References: <20240111234142.2944934-1-jeffxu@chromium.org> In-Reply-To: From: Jeff Xu Date: Fri, 12 Jan 2024 20:53:57 -0800 Message-ID: Subject: Re: [PATCH v6 0/4] Introduce mseal() To: Randy Dunlap Cc: akpm@linux-foundation.org, keescook@chromium.org, jannh@google.com, sroettger@google.com, willy@infradead.org, gregkh@linuxfoundation.org, torvalds@linux-foundation.org, usama.anjum@collabora.com, jeffxu@google.com, jorgelo@chromium.org, groeck@chromium.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, pedro.falcato@gmail.com, dave.hansen@intel.com, linux-hardening@vger.kernel.org, deraadt@openbsd.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspam-User: X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 34F73180005 X-Stat-Signature: i9njks3fdofckzt6x7zpmcispo4gpry7 X-HE-Tag: 1705121649-46471 X-HE-Meta: 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 ssCG+E3m 7bD1+Vgh7UX29nyWCLl2gz8q6H3CZreZPZiV5eBSPozVjXwNnEZ2fNdi1jCcsXzLpGe7WDyd+sKcci9F6+W6W2viO9kQUlQT1EUBkz9Zr6Ev4oEjW312SywFh7XkjFk7IBMr5CFmvWjqrcKkjryPf3pyWyJV1EL4Xo44u8tBN1CRjoiAGYcp4qn3rz0iBlz6+GtmYbRP81UytENHUERVHAYIfZLZ9QKNjuyLhAHwGJP2GtQxkYpei4O+HbLpgYkaRELebxCQ8DS4EQ6uopMEjuCFKSq/G9Vs8GfxCkOdPlfPVEjyjUf1vAuMIXmNkTT89QNIbjm24DZ88xn/ijsy4iW1ZVMc+0NNZS3UYkZTqPQ8D9fT3tL3k39+kktY2xLQnry/S0+hkBkwtT2J1YArOQcn7qOm3Xbov3JlFP6T3zhV30+zvClh7PeTC6JAH/zzZA7fi X-Bogosity: Ham, tests=bogofilter, spamicity=0.000003, 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 Fri, Jan 12, 2024 at 6:20=E2=80=AFPM Randy Dunlap wrote: > > > > On 1/11/24 15:41, jeffxu@chromium.org wrote: > > From: Jeff Xu > > > > This patchset proposes a new mseal() syscall for the Linux kernel. > > > > Jeff, > Building arm64 defconfig, on linux-next-20240112, I get: > I don't quite get how this is related to my change. Can you please send me the steps to reproduce ? I don't usually build arm. Thanks -Jeff > CC arch/arm64/kernel/asm-offsets.s > In file included from ../include/uapi/linux/mman.h:5, > from ../include/linux/mm.h:33, > from ../include/linux/memblock.h:12, > from ../arch/arm64/include/asm/acpi.h:14, > from ../include/acpi/acpi_io.h:7, > from ../include/linux/acpi.h:39, > from ../include/acpi/apei.h:9, > from ../include/acpi/ghes.h:5, > from ../include/linux/arm_sdei.h:8, > from ../arch/arm64/kernel/asm-offsets.c:10: > ../arch/arm64/include/asm/mman.h: In function 'arch_calc_vm_prot_bits': > ../arch/arm64/include/asm/mman.h:15:24: error: 'VM_ARM64_BTI' undeclared = (first use in this function); did you mean 'ARM64_BTI'? > 15 | ret |=3D VM_ARM64_BTI; > | ^~~~~~~~~~~~ > | ARM64_BTI > ../arch/arm64/include/asm/mman.h:15:24: note: each undeclared identifier = is reported only once for each function it appears in > ../arch/arm64/include/asm/mman.h:18:24: error: 'VM_MTE' undeclared (first= use in this function); did you mean 'VM_MAP'? > 18 | ret |=3D VM_MTE; > | ^~~~~~ > | VM_MAP > ../arch/arm64/include/asm/mman.h: In function 'arch_calc_vm_flag_bits': > ../arch/arm64/include/asm/mman.h:32:24: error: 'VM_MTE_ALLOWED' undeclare= d (first use in this function) > 32 | return VM_MTE_ALLOWED; > | ^~~~~~~~~~~~~~ > ../arch/arm64/include/asm/mman.h: In function 'arch_validate_flags': > ../arch/arm64/include/asm/mman.h:59:29: error: 'VM_MTE' undeclared (first= use in this function); did you mean 'VM_MAP'? > 59 | return !(vm_flags & VM_MTE) || (vm_flags & VM_MTE_ALLOWED= ); > | ^~~~~~ > | VM_MAP > ../arch/arm64/include/asm/mman.h:59:52: error: 'VM_MTE_ALLOWED' undeclare= d (first use in this function) > 59 | return !(vm_flags & VM_MTE) || (vm_flags & VM_MTE_ALLOWED= ); > | ^~~~~~~~~~~~~~ > > > -- > #Randy