On Wed, 06 Jul 2022 14:02:22 +0200, Cezary Rojewski wrote: > > snd_hda_codec_cleanup_for_unbind() unsets preset what interferes with > module unloading and triggers null-ptr-deref. Preset is assigned only > once, during device/driver matching whereas module reload and unload > follow completely different path and may occur several times during > runtime. Hm, the driver reload/unload does unbind. Keeping this field mean to leave the pointer to the possibly freed object, no? And if it's not cleared, where is this field cleared instead? thanks, Takashi
