diff options
| author | Wen Yang <[email protected]> | 2019-07-04 16:38:50 +0800 |
|---|---|---|
| committer | Mark Brown <[email protected]> | 2019-07-04 13:15:37 +0100 |
| commit | 1bcc1fd64e4dd903f4d868a9e053986e3b102713 (patch) | |
| tree | ce2406dcbdb3a57702bebc4e8bf47eb58bca0c6a | |
| parent | da7260cc8d1dc3564eb4f33550b0525541d71a47 (diff) | |
ASoC: audio-graph-card: fix use-after-free in graph_for_each_link
After calling of_node_put() on the codec_ep and codec_port variables,
they are still being used, which may result in use-after-free.
We fix this issue by calling of_node_put() after the last usage.
Fixes: fce9b90c1ab7 ("ASoC: audio-graph-card: cleanup DAI link loop method - step2")
Signed-off-by: Wen Yang <[email protected]>
Cc: Liam Girdwood <[email protected]>
Cc: Mark Brown <[email protected]>
Cc: Jaroslav Kysela <[email protected]>
Cc: Takashi Iwai <[email protected]>
Cc: Kuninori Morimoto <[email protected]>
Cc: [email protected]
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
| -rw-r--r-- | sound/soc/generic/audio-graph-card.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/sound/soc/generic/audio-graph-card.c b/sound/soc/generic/audio-graph-card.c index ec7e673ba475..70ed28d97d49 100644 --- a/sound/soc/generic/audio-graph-card.c +++ b/sound/soc/generic/audio-graph-card.c @@ -435,9 +435,6 @@ static int graph_for_each_link(struct asoc_simple_priv *priv, codec_ep = of_graph_get_remote_endpoint(cpu_ep); codec_port = of_get_parent(codec_ep); - of_node_put(codec_ep); - of_node_put(codec_port); - /* get convert-xxx property */ memset(&adata, 0, sizeof(adata)); graph_parse_convert(dev, codec_ep, &adata); @@ -457,6 +454,9 @@ static int graph_for_each_link(struct asoc_simple_priv *priv, else ret = func_noml(priv, cpu_ep, codec_ep, li); + of_node_put(codec_ep); + of_node_put(codec_port); + if (ret < 0) return ret; |