linux-kernel - Re: [PATCH v6 0/4] Introduce mseal()

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Date: Fri, 12 Jan 2024 18:19:55 -0800
From: Randy Dunlap <rdunlap@...radead.org>
To: jeffxu@...omium.org, akpm@...ux-foundation.org, keescook@...omium.org,
 jannh@...gle.com, sroettger@...gle.com, willy@...radead.org,
 gregkh@...uxfoundation.org, torvalds@...ux-foundation.org,
 usama.anjum@...labora.com
Cc: jeffxu@...gle.com, jorgelo@...omium.org, groeck@...omium.org,
 linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
 linux-mm@...ck.org, pedro.falcato@...il.com, dave.hansen@...el.com,
 linux-hardening@...r.kernel.org, deraadt@...nbsd.org
Subject: Re: [PATCH v6 0/4] Introduce mseal()



On 1/11/24 15:41, jeffxu@...omium.org wrote:
> From: Jeff Xu <jeffxu@...gle.com>
> 
> This patchset proposes a new mseal() syscall for the Linux kernel.
> 

Jeff,
Building arm64 defconfig, on linux-next-20240112, I get:

  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 |= 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 |= 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' undeclared (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' undeclared (first use in this function)
   59 |         return !(vm_flags & VM_MTE) || (vm_flags & VM_MTE_ALLOWED);
      |                                                    ^~~~~~~~~~~~~~


-- 
#Randy