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

From: Pierre-Louis Bossart
Date: Fri Jun 16 2023 - 06:23:36 EST

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On 6/15/23 20:34, kernel test robot wrote:
> Hi Pierre-Louis,
>
> First bad commit (maybe != root cause):
>
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head: b6dad5178ceaf23f369c3711062ce1f2afc33644
> commit: 9995c1d096c8ab1b5f1edc4141257719f6a53524 ASoC: soc-pcm: improve BE transition for PAUSE_RELEASE
> date: 1 year, 2 months ago
> config: riscv-buildonly-randconfig-r001-20230615 (https://download.01.org/0day-ci/archive/20230616/202306160240.ahGjvPqw-lkp@xxxxxxxxx/config)
> compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project.git f28c006a5895fc0e329fe15fead81e37457cb1d1)
> reproduce (this is a W=1 build):
> mkdir -p ~/bin
> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> # install riscv cross compiling tool for clang build
> # apt-get install binutils-riscv64-linux-gnu
> # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9995c1d096c8ab1b5f1edc4141257719f6a53524
> git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> git fetch --no-tags linus master
> git checkout 9995c1d096c8ab1b5f1edc4141257719f6a53524
> # save the config file
> mkdir build_dir && cp config build_dir/.config
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=riscv olddefconfig
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash ./ drivers/ fs/ lib/zstd/ mm/ sound/pci/hda/ sound/soc/
>
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@xxxxxxxxx>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202306160240.ahGjvPqw-lkp@xxxxxxxxx/
>
> All warnings (new ones prefixed by >>):
>
>>> 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....

> ^
> 1 warning generated.
>
>
> vim +/dpcm_be_dai_trigger +2089 sound/soc/soc-pcm.c
>
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2088
> 23607025303af6e Liam Girdwood 2014-01-17 @2089 int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream,
> 45c0a188ca59e7e Mark Brown 2012-05-09 2090 int cmd)
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2091 {
> db3aa39c9106842 Kuninori Morimoto 2021-03-15 2092 struct snd_soc_pcm_runtime *be;
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2093 bool pause_stop_transition;
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2094 struct snd_soc_dpcm *dpcm;
> b2ae80663008a76 Takashi Iwai 2021-12-07 2095 unsigned long flags;
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2096 int ret = 0;
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2097
> 8d6258a4dd26783 Kuninori Morimoto 2018-09-18 2098 for_each_dpcm_be(fe, stream, dpcm) {
> db3aa39c9106842 Kuninori Morimoto 2021-03-15 2099 struct snd_pcm_substream *be_substream;
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2100
> db3aa39c9106842 Kuninori Morimoto 2021-03-15 2101 be = dpcm->be;
> db3aa39c9106842 Kuninori Morimoto 2021-03-15 2102 be_substream = snd_soc_dpcm_get_substream(be, stream);
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2103
> 3c75c0ea5da749b Takashi Iwai 2022-01-19 2104 snd_soc_dpcm_stream_lock_irqsave_nested(be, stream, flags);
> b2ae80663008a76 Takashi Iwai 2021-12-07 2105
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2106 /* is this op for this BE ? */
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2107 if (!snd_soc_dpcm_be_can_update(fe, be, stream))
> b2ae80663008a76 Takashi Iwai 2021-12-07 2108 goto next;
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2109
> a9faca15a644ff7 Kuninori Morimoto 2020-12-01 2110 dev_dbg(be->dev, "ASoC: trigger BE %s cmd %d\n",
> a9faca15a644ff7 Kuninori Morimoto 2020-12-01 2111 be->dai_link->name, cmd);
> a9faca15a644ff7 Kuninori Morimoto 2020-12-01 2112
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2113 switch (cmd) {
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2114 case SNDRV_PCM_TRIGGER_START:
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2115 if (!be->dpcm[stream].be_start &&
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2116 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PREPARE) &&
> 21fca8bdbb64df1 이경택 2020-04-01 2117 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_STOP) &&
> 3202e2f5fac0032 Mark Brown 2021-08-30 2118 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED))
> b2ae80663008a76 Takashi Iwai 2021-12-07 2119 goto next;
> 6479f7588651cbc Pierre-Louis Bossart 2021-08-17 2120
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2121 be->dpcm[stream].be_start++;
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2122 if (be->dpcm[stream].be_start != 1)
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2123 goto next;
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2124
> a9faca15a644ff7 Kuninori Morimoto 2020-12-01 2125 ret = soc_pcm_trigger(be_substream, cmd);
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2126 if (ret) {
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2127 be->dpcm[stream].be_start--;
> b2ae80663008a76 Takashi Iwai 2021-12-07 2128 goto next;
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2129 }
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2130
> 3202e2f5fac0032 Mark Brown 2021-08-30 2131 be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2132 break;
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2133 case SNDRV_PCM_TRIGGER_RESUME:
> 3202e2f5fac0032 Mark Brown 2021-08-30 2134 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_SUSPEND))
> b2ae80663008a76 Takashi Iwai 2021-12-07 2135 goto next;
> 6479f7588651cbc Pierre-Louis Bossart 2021-08-17 2136
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2137 be->dpcm[stream].be_start++;
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2138 if (be->dpcm[stream].be_start != 1)
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2139 goto next;
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2140
> a9faca15a644ff7 Kuninori Morimoto 2020-12-01 2141 ret = soc_pcm_trigger(be_substream, cmd);
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2142 if (ret) {
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2143 be->dpcm[stream].be_start--;
> b2ae80663008a76 Takashi Iwai 2021-12-07 2144 goto next;
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2145 }
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2146
> 3202e2f5fac0032 Mark Brown 2021-08-30 2147 be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2148 break;
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2149 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
> 3aa1e96a2b95e2e Pierre-Louis Bossart 2021-12-07 2150 if (!be->dpcm[stream].be_start &&
> 3aa1e96a2b95e2e Pierre-Louis Bossart 2021-12-07 2151 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) &&
> 3aa1e96a2b95e2e Pierre-Louis Bossart 2021-12-07 2152 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED))
> b2ae80663008a76 Takashi Iwai 2021-12-07 2153 goto next;
> 6479f7588651cbc Pierre-Louis Bossart 2021-08-17 2154
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2155 fe->dpcm[stream].fe_pause = false;
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2156 be->dpcm[stream].be_pause--;
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2157
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2158 be->dpcm[stream].be_start++;
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2159 if (be->dpcm[stream].be_start != 1)
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2160 goto next;
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2161
> a9faca15a644ff7 Kuninori Morimoto 2020-12-01 2162 ret = soc_pcm_trigger(be_substream, cmd);
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2163 if (ret) {
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2164 be->dpcm[stream].be_start--;
> b2ae80663008a76 Takashi Iwai 2021-12-07 2165 goto next;
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2166 }
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2167
> 3202e2f5fac0032 Mark Brown 2021-08-30 2168 be->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2169 break;
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2170 case SNDRV_PCM_TRIGGER_STOP:
> 21fca8bdbb64df1 이경택 2020-04-01 2171 if ((be->dpcm[stream].state != SND_SOC_DPCM_STATE_START) &&
> 3202e2f5fac0032 Mark Brown 2021-08-30 2172 (be->dpcm[stream].state != SND_SOC_DPCM_STATE_PAUSED))
> b2ae80663008a76 Takashi Iwai 2021-12-07 2173 goto next;
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2174
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2175 if (be->dpcm[stream].state == SND_SOC_DPCM_STATE_START)
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2176 be->dpcm[stream].be_start--;
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2177
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2178 if (be->dpcm[stream].be_start != 0)
> b2ae80663008a76 Takashi Iwai 2021-12-07 2179 goto next;
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2180
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2181 pause_stop_transition = false;
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2182 if (fe->dpcm[stream].fe_pause) {
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2183 pause_stop_transition = true;
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2184 fe->dpcm[stream].fe_pause = false;
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2185 be->dpcm[stream].be_pause--;
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2186 }
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2187
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2188 if (be->dpcm[stream].be_pause != 0)
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2189 ret = soc_pcm_trigger(be_substream, SNDRV_PCM_TRIGGER_PAUSE_PUSH);
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2190 else
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2191 ret = soc_pcm_trigger(be_substream, SNDRV_PCM_TRIGGER_STOP);
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2192
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2193 if (ret) {
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2194 if (be->dpcm[stream].state == SND_SOC_DPCM_STATE_START)
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2195 be->dpcm[stream].be_start++;
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2196 if (pause_stop_transition) {
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2197 fe->dpcm[stream].fe_pause = true;
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2198 be->dpcm[stream].be_pause++;
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2199 }
> b2ae80663008a76 Takashi Iwai 2021-12-07 2200 goto next;
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2201 }
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2202
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2203 if (be->dpcm[stream].be_pause != 0)
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2204 be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2205 else
> 3202e2f5fac0032 Mark Brown 2021-08-30 2206 be->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2207
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2208 break;
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2209 case SNDRV_PCM_TRIGGER_SUSPEND:
> 3202e2f5fac0032 Mark Brown 2021-08-30 2210 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
> b2ae80663008a76 Takashi Iwai 2021-12-07 2211 goto next;
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2212
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2213 be->dpcm[stream].be_start--;
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2214 if (be->dpcm[stream].be_start != 0)
> b2ae80663008a76 Takashi Iwai 2021-12-07 2215 goto next;
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2216
> a9faca15a644ff7 Kuninori Morimoto 2020-12-01 2217 ret = soc_pcm_trigger(be_substream, cmd);
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2218 if (ret) {
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2219 be->dpcm[stream].be_start++;
> b2ae80663008a76 Takashi Iwai 2021-12-07 2220 goto next;
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2221 }
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2222
> 3202e2f5fac0032 Mark Brown 2021-08-30 2223 be->dpcm[stream].state = SND_SOC_DPCM_STATE_SUSPEND;
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2224 break;
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2225 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
> 3202e2f5fac0032 Mark Brown 2021-08-30 2226 if (be->dpcm[stream].state != SND_SOC_DPCM_STATE_START)
> b2ae80663008a76 Takashi Iwai 2021-12-07 2227 goto next;
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2228
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2229 fe->dpcm[stream].fe_pause = true;
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2230 be->dpcm[stream].be_pause++;
> 9995c1d096c8ab1 Pierre-Louis Bossart 2022-04-06 2231
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2232 be->dpcm[stream].be_start--;
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2233 if (be->dpcm[stream].be_start != 0)
> b2ae80663008a76 Takashi Iwai 2021-12-07 2234 goto next;
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2235
> a9faca15a644ff7 Kuninori Morimoto 2020-12-01 2236 ret = soc_pcm_trigger(be_substream, cmd);
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2237 if (ret) {
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2238 be->dpcm[stream].be_start++;
> b2ae80663008a76 Takashi Iwai 2021-12-07 2239 goto next;
> 848aedfdc6ba25a Pierre-Louis Bossart 2021-12-07 2240 }
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2241
> 3202e2f5fac0032 Mark Brown 2021-08-30 2242 be->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2243 break;
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2244 }
> b2ae80663008a76 Takashi Iwai 2021-12-07 2245 next:
> b2ae80663008a76 Takashi Iwai 2021-12-07 2246 snd_soc_dpcm_stream_unlock_irqrestore(be, stream, flags);
> b2ae80663008a76 Takashi Iwai 2021-12-07 2247 if (ret)
> b2ae80663008a76 Takashi Iwai 2021-12-07 2248 break;
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2249 }
> db3aa39c9106842 Kuninori Morimoto 2021-03-15 2250 if (ret < 0)
> db3aa39c9106842 Kuninori Morimoto 2021-03-15 2251 dev_err(fe->dev, "ASoC: %s() failed at %s (%d)\n",
> db3aa39c9106842 Kuninori Morimoto 2021-03-15 2252 __func__, be->dai_link->name, ret);
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2253 return ret;
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2254 }
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2255 EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger);
> 01d7584cd2e5a93 Liam Girdwood 2012-04-25 2256
>
> :::::: The code at line 2089 was first introduced by commit
> :::::: 23607025303af6e84bc2cd4cabe89c21f6a22a3f ASoC: DPCM: make some DPCM API calls non static for compressed usage
>
> :::::: TO: Liam Girdwood <liam.r.girdwood@xxxxxxxxxxxxxxx>
> :::::: CC: Mark Brown <broonie@xxxxxxxxxx>
>

Next message: Vincent Whitchurch: "Re: [PATCH] perf annotate: Work with vmlinux outside symfs"
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Next in thread: Mark Brown: "Re: sound/soc/soc-pcm.c:2089:5: warning: stack frame size (2064) exceeds limit (2048) in 'dpcm_be_dai_trigger'"
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