From dd9f9cc1e6b9391140afa5cf27bb47c9e2a08d02 Mon Sep 17 00:00:00 2001 From: Amadeusz Sławiński Date: Fri, 29 Sep 2023 12:32:43 +0200 Subject: ASoC: core: Do not call link_exit() on uninitialized rtd objects MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On init we have sequence: for_each_card_prelinks(card, i, dai_link) { ret = snd_soc_add_pcm_runtime(card, dai_link); ret = init_some_other_things(...); if (ret) goto probe_end: for_each_card_rtds(card, rtd) { ret = soc_init_pcm_runtime(card, rtd); probe_end: while on exit: for_each_card_rtds(card, rtd) snd_soc_link_exit(rtd); If init_some_other_things() step fails due to error we end up with not fully setup rtds and try to call snd_soc_link_exit on them, which depending on contents on .link_exit handler, can end up dereferencing NULL pointer. Reviewed-by: Cezary Rojewski Signed-off-by: Amadeusz Sławiński Link: https://lore.kernel.org/r/20230929103243.705433-2-amadeuszx.slawinski@linux.intel.com Signed-off-by: Mark Brown --- include/sound/soc.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/sound/soc.h b/include/sound/soc.h index fa2337a3cf4c..37f9d3fe302a 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -1126,6 +1126,8 @@ struct snd_soc_pcm_runtime { unsigned int pop_wait:1; unsigned int fe_compr:1; /* for Dynamic PCM */ + bool initialized; + int num_components; struct snd_soc_component *components[]; /* CPU/Codec/Platform */ }; -- cgit v1.2.3