>-----Original Message----- >From: Takashi Iwai [mailto:tiwai@xxxxxxx] >Sent: Thursday, May 23, 2019 4:27 PM >To: Yang, Libin <libin.yang@xxxxxxxxx> >Cc: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>; alsa- >devel@xxxxxxxxxxxxxxxx; broonie@xxxxxxxxxx >Subject: Re: [PATCH v2 12/12] ASoC: SOF: Intel: hda-codec: fix >memory allocation > >On Thu, 23 May 2019 10:21:20 +0200, >Yang, Libin wrote: >> >> Hi Takashi, >> >> >-----Original Message----- >> >From: Takashi Iwai [mailto:tiwai@xxxxxxx] >> >Sent: Thursday, May 23, 2019 4:16 PM >> >To: Yang, Libin <libin.yang@xxxxxxxxx> >> >Cc: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>; >> >alsa- devel@xxxxxxxxxxxxxxxx; broonie@xxxxxxxxxx >> >Subject: Re: [PATCH v2 12/12] ASoC: SOF: Intel: >> >hda-codec: fix memory allocation >> > >> >On Thu, 23 May 2019 10:03:03 +0200, >> >Yang, Libin wrote: >> >> >> >> Please let me describe the issue here. >> >> >> >> The test case is: >> >> 1) Unload module with script "sudo ./sof_remove.sh" , >> >> 2) reload module with script "sudo ./sof_insert.sh" >> >> >> >> After several rounds of removing and inserting kernel modules, >> >> system will complain like below: >> >> "BUG: unable to handle kernel paging request at 000000292a282031" >> > >> >Did you try some kernel debug options? It might show what went wrong. >> >> No, I haven't. I'm not sure which options I can use for this case. >> Could you please give me some suggestions? > >You can enable CONFIG_DEBUG_DEVRES and adjust the devres.log option for >showing each devres allocation and removal. And I'd try >CONFIG_DEBUG_SLAB and CONFIG_DEBUG_KMEMLEAK or whatever >interesting in CONFIG_DEBUG section, too. Thanks. I will have a try. Regards, Libin > > >Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
