linux-kernel - Re: [PATCH] audit: do a quick exit when syscall number is invalid

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Date:   Mon, 28 Mar 2022 23:19:41 -0300
From:   Enzo Matsumiya <ematsumiya@...e.de>
To:     CGEL <cgel.zte@...il.com>
Cc:     rth@...ddle.net, ink@...assic.park.msu.ru, mattst88@...il.com,
        paul@...l-moore.com, kbuild-all@...ts.01.org,
        Zeal Robot <zealci@....com.cn>, linux-kernel@...r.kernel.org,
        eparis@...hat.com, Yang Yang <yang.yang29@....com.cn>,
        linux-audit@...hat.com
Subject: Re: [PATCH] audit: do a quick exit when syscall number is invalid

On 03/29, CGEL wrote:
>>    In file included from include/linux/init.h:5,
>>                     from kernel/auditsc.c:34:
>>    kernel/auditsc.c: In function '__audit_syscall_exit':
>> >> kernel/auditsc.c:2081:61: error: 'NR_syscalls' undeclared (first use in this function); did you mean 'si_syscall'?
>>     2081 |             unlikely(context->major < 0 || context->major > NR_syscalls))
>>          |                                                             ^~~~~~~~~~~
>
>Sorry could anybody give a hand to solve this? It works well on x86_64 and arm64.
>I have no alpha environment and not familiar to this arch, much thanks!

Sorry, no experience either, but from a quick look at arch/alpha/include/asm/unistd.h
shows that it's called NR_SYSCALLS for alpha arch, for whatever reason.


HTH

Enzo