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. Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
