linux-kernel - Re: sound/soc/soc-pcm.c:2089:5: warning: stack frame size (2064) exceeds limit (2048) in 'dpcm_be_dai

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Message-ID: <caea391c-f10a-4979-92c3-75964ed7497a@sirena.org.uk>
Date:   Fri, 16 Jun 2023 12:56:00 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Cc:     kernel test robot <lkp@...el.com>, llvm@...ts.linux.dev,
        oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Rander Wang <rander.wang@...el.com>,
        Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>,
        Péter Ujfalusi 
        <peter.ujfalusi@...ux.intel.com>,
        Bard Liao <yung-chuan.liao@...ux.intel.com>,
        ALSA Development Mailing List <alsa-devel@...a-project.org>
Subject: Re: sound/soc/soc-pcm.c:2089:5: warning: stack frame size (2064)
 exceeds limit (2048) in 'dpcm_be_dai_trigger'

On Fri, Jun 16, 2023 at 12:21:13PM +0200, Pierre-Louis Bossart wrote:
> On 6/15/23 20:34, kernel test robot wrote:

> >>> sound/soc/soc-pcm.c:2089:5: warning: stack frame size (2064) exceeds limit (2048) in 'dpcm_be_dai_trigger' [-Wframe-larger-than]
> >    int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream,

> Not sure what causes this warning to show up, the code hasn't changed in
> 1.2 years, nor what to do about it....

One of the sanitisers is doing things which explodes the stack size.  I
wouldn't worry about it, one of the toolchain people will probably get
to it at some point if they didn't already (sometimes these things are
done by tuning the compiler flags).

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