linux-kernel - Re: fs/select.c:991:1: warning: the frame size of 1032 bytes is larger than 1024 bytes

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Message-ID: <alpine.LRH.2.21.1709112315350.7844@math.ut.ee>
Date:   Mon, 11 Sep 2017 23:16:37 +0300 (EEST)
From:   Meelis Roos <mroos@...ux.ee>
To:     Helge Deller <deller@....de>
cc:     linux-parisc@...r.kernel.org,
        Linux Kernel list <linux-kernel@...r.kernel.org>
Subject: Re: fs/select.c:991:1: warning: the frame size of 1032 bytes is
 larger than 1024 bytes

> Meelis, this patch should fix both issues.
> Can you test?

At least one of the warnings is still there - but I am on a 64-bit 
kernel on RP3440, RP3410 and A500 where I saw this.
> 
> Helge
> 
> [PATCH] parisc: Fix too large frame size warnings
> 
> The parisc architecture requires larger stack frames than most other
> architectures on 32-bit kernels.
> Increase the default to 1280 bytes for parisc to avoid warnings in
> do_sys_poll() and pat_memconfig() functions.
> 
> Signed-off-by: Helge Deller <deller@....de>
> 
> diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
> index b19c491cbc4e..2689b7c50c52 100644
> --- a/lib/Kconfig.debug
> +++ b/lib/Kconfig.debug
> @@ -219,7 +219,8 @@ config FRAME_WARN
>  	range 0 8192
>  	default 0 if KASAN
>  	default 2048 if GCC_PLUGIN_LATENT_ENTROPY
> -	default 1024 if !64BIT
> +	default 1280 if (!64BIT && PARISC)
> +	default 1024 if (!64BIT && !PARISC)
>  	default 2048 if 64BIT
>  	help
>  	  Tell gcc to warn at build time for stack frames larger than this.
> 

-- 
Meelis Roos (mroos@...ux.ee)