6.6-stable review patch. If anyone has any objections, please let me know.
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From: Chancel Liu chancel.liu@nxp.com
[ Upstream commit 23fb6bc2696119391ec3a92ccaffe50e567c515e ]
When pcm_runtime is adding platform components it will scan all registered components. In case of DPCM FE/BE some DAI links will configure dummy platform. However both dummy codec and dummy platform are using "snd-soc-dummy" as component->name. Dummy codec should be skipped when adding platforms otherwise there'll be overflow and UBSAN complains.
Reported-by: Zhipeng Wang zhipeng.wang_1@nxp.com Signed-off-by: Chancel Liu chancel.liu@nxp.com Link: https://msgid.link/r/20240305065606.3778642-1-chancel.liu@nxp.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- sound/soc/soc-core.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 9de98c01d8151..e65fe3a7c3e42 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -1105,6 +1105,9 @@ static int snd_soc_add_pcm_runtime(struct snd_soc_card *card, if (!snd_soc_is_matching_component(platform, component)) continue;
+ if (snd_soc_component_is_dummy(component) && component->num_dai) + continue; + snd_soc_rtd_add_component(rtd, component); } }