linux-kernel - Re: [PATCH v2] kselftests: mm: Fix wrong __NR

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <9985c614-5bd5-4969-a4c2-87015df27b18@redhat.com>
Date: Mon, 23 Sep 2024 18:04:10 +0200
From: David Hildenbrand <david@...hat.com>
To: Muhammad Usama Anjum <usama.anjum@...labora.com>,
 Andrew Morton <akpm@...ux-foundation.org>, Shuah Khan <shuah@...nel.org>,
 John Hubbard <jhubbard@...dia.com>
Cc: kernel@...labora.com, linux-mm@...ck.org,
 linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] kselftests: mm: Fix wrong __NR_userfaultfd value

On 23.09.24 07:38, Muhammad Usama Anjum wrote:
> grep -rnIF "#define __NR_userfaultfd"
> tools/include/uapi/asm-generic/unistd.h:681:#define __NR_userfaultfd 282
> arch/x86/include/generated/uapi/asm/unistd_32.h:374:#define
> __NR_userfaultfd 374
> arch/x86/include/generated/uapi/asm/unistd_64.h:327:#define
> __NR_userfaultfd 323
> arch/x86/include/generated/uapi/asm/unistd_x32.h:282:#define
> __NR_userfaultfd (__X32_SYSCALL_BIT + 323)
> arch/arm/include/generated/uapi/asm/unistd-eabi.h:347:#define
> __NR_userfaultfd (__NR_SYSCALL_BASE + 388)
> arch/arm/include/generated/uapi/asm/unistd-oabi.h:359:#define
> __NR_userfaultfd (__NR_SYSCALL_BASE + 388)
> include/uapi/asm-generic/unistd.h:681:#define __NR_userfaultfd 282
> 
> The number is dependent on the architecture. The above data shows that:
> x86	374
> x86_64	323
> 
> The value of __NR_userfaultfd was changed to 282 when
> asm-generic/unistd.h was included. It makes the test to fail every time
> as the correct number of this syscall on x86_64 is 323. Fix the header
> to asm/unistd.h.
> 
> Fixes: a5c6bc590094 ("selftests/mm: remove local __NR_* definitions")
> Signed-off-by: Muhammad Usama Anjum <usama.anjum@...labora.com>

Reviewed-by: David Hildenbrand <david@...hat.com>

-- 
Cheers,

David / dhildenb