Hi Krzysztof, Cc: Charles On 2/5/19 22:16, Krzysztof Kozlowski wrote: > Bisect pointed to commit: > commit 078a85f2806f0ffd11289009462a6a390f9adb5c > Author: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx> > Date: Thu Jan 31 13:30:18 2019 +0000 > ASoC: dapm: Only power up active channels from a DAI > > as a bad commit for NULL pointer on my Odroid XU3 and Odroid U3 board when > doing "aplay /usr/share/sounds/alsa/Front_Right.wav". > > 1. Arch ARM Linux > 2. exynos_defconfig > 3. Odroid U3, XU3, Exynos SoC, ARMv7 > > Last address is in calltrace: > c079552c > dapm_update_dai_unlocked > sound/soc/soc-dapm.c:2586 Thanks for bisecting this, I ran into same issue last night and I'm starting to debug this now. I have added some debug prints and it looks like it oopses on NULL playback_widget of the dummy DAI. [ 30.701182] hdmi-audio-codec hdmi-audio-codec.0.auto: Update DAI routes for i2s-hifi playback [ 30.709630] dapm_update_dai_unlocked:2586 w=8bd27d28 [ 30.714403] dapm_update_dai_unlocked:2594 w=8bd27d28 [ 30.724688] max98090 5-0010: Update DAI routes for HiFi playback [ 30.730163] dapm_update_dai_unlocked:2586 w=3fc942af [ 30.735154] dapm_update_dai_unlocked:2594 w=3fc942af [ 30.745051] snd-soc-dummy snd-soc-dummy: Update DAI routes for snd-soc-dummy-dai playback [ 30.753128] dapm_update_dai_unlocked:2586 w= (null) [ 30.758114] Unable to handle kernel NULL pointer dereference at virtual address 0000007c -- Regards, Sylwester
