linux-kernel - Re: [PATCH] arm64: compat: Fix syscall number of compat_clock

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Message-ID: <20200319184258.GC27141@willie-the-truck>
Date:   Thu, 19 Mar 2020 18:42:59 +0000
From:   Will Deacon <will@...nel.org>
To:     Vincenzo Frascino <vincenzo.frascino@....com>
Cc:     linux-arm-kernel@...ts.infradead.org,
        clang-built-linux@...glegroups.com, linux-kernel@...r.kernel.org,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>, stable@...r.kernel.org
Subject: Re: [PATCH] arm64: compat: Fix syscall number of compat_clock_getres

On Thu, Mar 19, 2020 at 02:11:38PM +0000, Vincenzo Frascino wrote:
> The syscall number of compat_clock_getres was erroneously set to 247
> instead of 264. This causes the vDSO fallback of clock_getres to land
> on the wrong syscall.
> 
> Address the issue fixing the syscall number of compat_clock_getres.
> 
> Fixes: 53c489e1dfeb6 ("arm64: compat: Add missing syscall numbers")
> Cc: Catalin Marinas <catalin.marinas@....com>
> Cc: Will Deacon <will.deacon@....com>
> Cc: stable@...r.kernel.org
> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@....com>
> ---
>  arch/arm64/include/asm/unistd.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/include/asm/unistd.h b/arch/arm64/include/asm/unistd.h
> index 1dd22da1c3a9..803039d504de 100644
> --- a/arch/arm64/include/asm/unistd.h
> +++ b/arch/arm64/include/asm/unistd.h
> @@ -25,8 +25,8 @@
>  #define __NR_compat_gettimeofday	78
>  #define __NR_compat_sigreturn		119
>  #define __NR_compat_rt_sigreturn	173
> -#define __NR_compat_clock_getres	247
>  #define __NR_compat_clock_gettime	263
> +#define __NR_compat_clock_getres	264
>  #define __NR_compat_clock_gettime64	403
>  #define __NR_compat_clock_getres_time64	406

Ha, what a howler. I'll queue this one as a fix.

Will