Hi Greg, FYI, the error/warning still remains. tree: https://android.googlesource.com/kernel/common android-4.19-stable head: 20763d5b10df774960bfc616e30d4b9cdf744fc1 commit: b8539473ea414eaa4ef28791fa308a6ab8c5d67c [9050/9999] ANDROID: GKI: workqueue.h: add Android ABI padding to some structures config: x86_64-randconfig-s021-20200622 (attached as .config) compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-dirty git checkout b8539473ea414eaa4ef28791fa308a6ab8c5d67c # save the attached .config to linux build tree make W=1 C=1 ARCH=x86_64 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): sound/soc/soc-dapm.c: In function 'pop_dbg': sound/soc/soc-dapm.c:174:2: warning: function 'pop_dbg' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format] 174 | vsnprintf(buf, PAGE_SIZE, fmt, args); | ^~~~~~~~~ sound/soc/soc-dapm.c: In function 'snd_soc_dai_link_event': 3833 | } | ^ vim +3833 sound/soc/soc-dapm.c 4ba1327ab8ce17 Mark Brown 2008-05-13 3697 c74184ed30ecce Mark Brown 2012-04-04 3698 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w, c74184ed30ecce Mark Brown 2012-04-04 3699 struct snd_kcontrol *kcontrol, int event) c74184ed30ecce Mark Brown 2012-04-04 3700 { c74184ed30ecce Mark Brown 2012-04-04 3701 struct snd_soc_dapm_path *source_p, *sink_p; c74184ed30ecce Mark Brown 2012-04-04 3702 struct snd_soc_dai *source, *sink; 249dc49576fc95 Charles Keepax 2018-08-15 3703 struct snd_soc_pcm_runtime *rtd = w->priv; c66150824b8a80 Nikesh Oswal 2015-02-02 3704 const struct snd_soc_pcm_stream *config = w->params + w->params_select; c74184ed30ecce Mark Brown 2012-04-04 3705 struct snd_pcm_substream substream; 9747cec21e2d55 Mark Brown 2012-04-26 3706 struct snd_pcm_hw_params *params = NULL; 8053f21675b073 Nicolin Chen 2016-07-26 3707 struct snd_pcm_runtime *runtime = NULL; 3ba66feb59810e Takashi Iwai 2018-07-25 3708 unsigned int fmt; 0376916b7b2cff Charles Keepax 2018-09-06 3709 int ret = 0; c74184ed30ecce Mark Brown 2012-04-04 3710 bf4edea863c435 Takashi Iwai 2013-11-07 3711 if (WARN_ON(!config) || a3423b02cf745c Lars-Peter Clausen 2015-08-11 3712 WARN_ON(list_empty(&w->edges[SND_SOC_DAPM_DIR_OUT]) || a3423b02cf745c Lars-Peter Clausen 2015-08-11 3713 list_empty(&w->edges[SND_SOC_DAPM_DIR_IN]))) bf4edea863c435 Takashi Iwai 2013-11-07 3714 return -EINVAL; c74184ed30ecce Mark Brown 2012-04-04 3715 c74184ed30ecce Mark Brown 2012-04-04 3716 /* We only support a single source and sink, pick the first */ a3423b02cf745c Lars-Peter Clausen 2015-08-11 3717 source_p = list_first_entry(&w->edges[SND_SOC_DAPM_DIR_OUT], a3423b02cf745c Lars-Peter Clausen 2015-08-11 3718 struct snd_soc_dapm_path, a3423b02cf745c Lars-Peter Clausen 2015-08-11 3719 list_node[SND_SOC_DAPM_DIR_OUT]); a3423b02cf745c Lars-Peter Clausen 2015-08-11 3720 sink_p = list_first_entry(&w->edges[SND_SOC_DAPM_DIR_IN], a3423b02cf745c Lars-Peter Clausen 2015-08-11 3721 struct snd_soc_dapm_path, a3423b02cf745c Lars-Peter Clausen 2015-08-11 3722 list_node[SND_SOC_DAPM_DIR_IN]); c74184ed30ecce Mark Brown 2012-04-04 3723 c74184ed30ecce Mark Brown 2012-04-04 3724 source = source_p->source->priv; c74184ed30ecce Mark Brown 2012-04-04 3725 sink = sink_p->sink->priv; c74184ed30ecce Mark Brown 2012-04-04 3726 c74184ed30ecce Mark Brown 2012-04-04 3727 /* Be a little careful as we don't want to overflow the mask array */ c74184ed30ecce Mark Brown 2012-04-04 3728 if (config->formats) { c74184ed30ecce Mark Brown 2012-04-04 3729 fmt = ffs(config->formats) - 1; c74184ed30ecce Mark Brown 2012-04-04 3730 } else { 30a6a1a4eed170 Liam Girdwood 2012-11-19 3731 dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n", c74184ed30ecce Mark Brown 2012-04-04 3732 config->formats); c74184ed30ecce Mark Brown 2012-04-04 3733 fmt = 0; c74184ed30ecce Mark Brown 2012-04-04 3734 } c74184ed30ecce Mark Brown 2012-04-04 3735 c74184ed30ecce Mark Brown 2012-04-04 3736 /* Currently very limited parameter selection */ 9747cec21e2d55 Mark Brown 2012-04-26 3737 params = kzalloc(sizeof(*params), GFP_KERNEL); 9747cec21e2d55 Mark Brown 2012-04-26 3738 if (!params) { 9747cec21e2d55 Mark Brown 2012-04-26 3739 ret = -ENOMEM; 9747cec21e2d55 Mark Brown 2012-04-26 3740 goto out; 9747cec21e2d55 Mark Brown 2012-04-26 3741 } 9747cec21e2d55 Mark Brown 2012-04-26 3742 snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt); c74184ed30ecce Mark Brown 2012-04-04 3743 9747cec21e2d55 Mark Brown 2012-04-26 3744 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min = c74184ed30ecce Mark Brown 2012-04-04 3745 config->rate_min; 9747cec21e2d55 Mark Brown 2012-04-26 3746 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max = c74184ed30ecce Mark Brown 2012-04-04 3747 config->rate_max; c74184ed30ecce Mark Brown 2012-04-04 3748 9747cec21e2d55 Mark Brown 2012-04-26 3749 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min c74184ed30ecce Mark Brown 2012-04-04 3750 = config->channels_min; 9747cec21e2d55 Mark Brown 2012-04-26 3751 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max c74184ed30ecce Mark Brown 2012-04-04 3752 = config->channels_max; c74184ed30ecce Mark Brown 2012-04-04 3753 c74184ed30ecce Mark Brown 2012-04-04 3754 memset(&substream, 0, sizeof(substream)); c74184ed30ecce Mark Brown 2012-04-04 3755 8053f21675b073 Nicolin Chen 2016-07-26 3756 /* Allocate a dummy snd_pcm_runtime for startup() and other ops() */ 8053f21675b073 Nicolin Chen 2016-07-26 3757 runtime = kzalloc(sizeof(*runtime), GFP_KERNEL); 8053f21675b073 Nicolin Chen 2016-07-26 3758 if (!runtime) { 8053f21675b073 Nicolin Chen 2016-07-26 3759 ret = -ENOMEM; 8053f21675b073 Nicolin Chen 2016-07-26 3760 goto out; 8053f21675b073 Nicolin Chen 2016-07-26 3761 } 8053f21675b073 Nicolin Chen 2016-07-26 3762 substream.runtime = runtime; 249dc49576fc95 Charles Keepax 2018-08-15 3763 substream.private_data = rtd; 8053f21675b073 Nicolin Chen 2016-07-26 3764 c74184ed30ecce Mark Brown 2012-04-04 3765 switch (event) { c74184ed30ecce Mark Brown 2012-04-04 3766 case SND_SOC_DAPM_PRE_PMU: c74184ed30ecce Mark Brown 2012-04-04 3767 substream.stream = SNDRV_PCM_STREAM_CAPTURE; 9900a4226c785d Kuninori Morimoto 2017-09-25 3768 if (source->driver->ops->startup) { 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3769 ret = source->driver->ops->startup(&substream, source); 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3770 if (ret < 0) { 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3771 dev_err(source->dev, 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3772 "ASoC: startup() failed: %d\n", ret); 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3773 goto out; 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3774 } 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3775 source->active++; 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3776 } 93e6958a3674d2 Benoit Cousson 2014-07-08 3777 ret = soc_dai_hw_params(&substream, params, source); 93e6958a3674d2 Benoit Cousson 2014-07-08 3778 if (ret < 0) 9747cec21e2d55 Mark Brown 2012-04-26 3779 goto out; c74184ed30ecce Mark Brown 2012-04-04 3780 c74184ed30ecce Mark Brown 2012-04-04 3781 substream.stream = SNDRV_PCM_STREAM_PLAYBACK; 9900a4226c785d Kuninori Morimoto 2017-09-25 3782 if (sink->driver->ops->startup) { 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3783 ret = sink->driver->ops->startup(&substream, sink); 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3784 if (ret < 0) { 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3785 dev_err(sink->dev, 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3786 "ASoC: startup() failed: %d\n", ret); 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3787 goto out; 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3788 } 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3789 sink->active++; 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3790 } 93e6958a3674d2 Benoit Cousson 2014-07-08 3791 ret = soc_dai_hw_params(&substream, params, sink); 93e6958a3674d2 Benoit Cousson 2014-07-08 3792 if (ret < 0) 9747cec21e2d55 Mark Brown 2012-04-26 3793 goto out; c74184ed30ecce Mark Brown 2012-04-04 3794 break; c74184ed30ecce Mark Brown 2012-04-04 3795 c74184ed30ecce Mark Brown 2012-04-04 3796 case SND_SOC_DAPM_POST_PMU: da18396f949eca Mark Brown 2013-02-06 3797 ret = snd_soc_dai_digital_mute(sink, 0, da18396f949eca Mark Brown 2013-02-06 3798 SNDRV_PCM_STREAM_PLAYBACK); c74184ed30ecce Mark Brown 2012-04-04 3799 if (ret != 0 && ret != -ENOTSUPP) 30a6a1a4eed170 Liam Girdwood 2012-11-19 3800 dev_warn(sink->dev, "ASoC: Failed to unmute: %d\n", ret); 9747cec21e2d55 Mark Brown 2012-04-26 3801 ret = 0; c74184ed30ecce Mark Brown 2012-04-04 3802 break; c74184ed30ecce Mark Brown 2012-04-04 3803 c74184ed30ecce Mark Brown 2012-04-04 3804 case SND_SOC_DAPM_PRE_PMD: da18396f949eca Mark Brown 2013-02-06 3805 ret = snd_soc_dai_digital_mute(sink, 1, da18396f949eca Mark Brown 2013-02-06 3806 SNDRV_PCM_STREAM_PLAYBACK); c74184ed30ecce Mark Brown 2012-04-04 3807 if (ret != 0 && ret != -ENOTSUPP) 30a6a1a4eed170 Liam Girdwood 2012-11-19 3808 dev_warn(sink->dev, "ASoC: Failed to mute: %d\n", ret); 9747cec21e2d55 Mark Brown 2012-04-26 3809 ret = 0; 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3810 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3811 source->active--; 9900a4226c785d Kuninori Morimoto 2017-09-25 3812 if (source->driver->ops->shutdown) { 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3813 substream.stream = SNDRV_PCM_STREAM_CAPTURE; 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3814 source->driver->ops->shutdown(&substream, source); 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3815 } 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3816 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3817 sink->active--; 9900a4226c785d Kuninori Morimoto 2017-09-25 3818 if (sink->driver->ops->shutdown) { 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3819 substream.stream = SNDRV_PCM_STREAM_PLAYBACK; 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3820 sink->driver->ops->shutdown(&substream, sink); 9b8ef9f6b3fccc Jeeja KP 2015-10-20 3821 } c74184ed30ecce Mark Brown 2012-04-04 3822 break; c74184ed30ecce Mark Brown 2012-04-04 3823 c74184ed30ecce Mark Brown 2012-04-04 3824 default: a6ed0608bd289b Takashi Iwai 2013-11-06 3825 WARN(1, "Unknown event %d\n", event); 75881df3fd7708 Sudip Mukherjee 2015-09-10 3826 ret = -EINVAL; c74184ed30ecce Mark Brown 2012-04-04 3827 } c74184ed30ecce Mark Brown 2012-04-04 3828 9747cec21e2d55 Mark Brown 2012-04-26 3829 out: 8053f21675b073 Nicolin Chen 2016-07-26 3830 kfree(runtime); 9747cec21e2d55 Mark Brown 2012-04-26 3831 kfree(params); 9747cec21e2d55 Mark Brown 2012-04-26 3832 return ret; c74184ed30ecce Mark Brown 2012-04-04 @3833 } c74184ed30ecce Mark Brown 2012-04-04 3834 :::::: The code at line 3833 was first introduced by commit :::::: c74184ed30ecce2a5e9ae9aa22cb5e3942e0c7c7 ASoC: core: Support transparent CODEC<->CODEC DAI links :::::: TO: Mark Brown <broonie(a)opensource.wolfsonmicro.com&gt; :::::: CC: Mark Brown <broonie(a)opensource.wolfsonmicro.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org