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authorWen Yang <wen.yang99@zte.com.cn>2019-07-13 05:46:14 +0200
committerMark Brown <broonie@kernel.org>2019-07-16 20:17:14 +0200
commit9b6d104a6b150bd4d3e5b039340e1f6b20c2e3c1 (patch)
treee319dde146adcf0f9be003514061178ca7cec2b1
parentASoC: audio-graph-card: add missing const at graph_get_dai_id() (diff)
downloadlinux-9b6d104a6b150bd4d3e5b039340e1f6b20c2e3c1.tar.xz
linux-9b6d104a6b150bd4d3e5b039340e1f6b20c2e3c1.zip
ASoC: samsung: odroid: fix an use-after-free issue for codec
The codec variable is still being used after the of_node_put() call, which may result in use-after-free. Fixes: bc3cf17b575a ("ASoC: samsung: odroid: Add support for secondary CPU DAI") Signed-off-by: Wen Yang <wen.yang99@zte.com.cn> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Sangbeom Kim <sbkim73@samsung.com> Cc: Sylwester Nawrocki <s.nawrocki@samsung.com> Cc: Liam Girdwood <lgirdwood@gmail.com> Cc: Mark Brown <broonie@kernel.org> Cc: Jaroslav Kysela <perex@perex.cz> Cc: Takashi Iwai <tiwai@suse.com> Cc: alsa-devel@alsa-project.org Cc: linux-kernel@vger.kernel.org Link: https://lore.kernel.org/r/1562989575-33785-2-git-send-email-wen.yang99@zte.com.cn Signed-off-by: Mark Brown <broonie@kernel.org>
-rw-r--r--sound/soc/samsung/odroid.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/sound/soc/samsung/odroid.c b/sound/soc/samsung/odroid.c
index dfb6e460e7eb..64ebe895cdd7 100644
--- a/sound/soc/samsung/odroid.c
+++ b/sound/soc/samsung/odroid.c
@@ -284,9 +284,8 @@ static int odroid_audio_probe(struct platform_device *pdev)
}
of_node_put(cpu);
- of_node_put(codec);
if (ret < 0)
- return ret;
+ goto err_put_node;
ret = snd_soc_of_get_dai_link_codecs(dev, codec, codec_link);
if (ret < 0)
@@ -317,6 +316,7 @@ static int odroid_audio_probe(struct platform_device *pdev)
goto err_put_clk_i2s;
}
+ of_node_put(codec);
return 0;
err_put_clk_i2s:
@@ -326,6 +326,8 @@ err_put_sclk:
err_put_cpu_dai:
of_node_put(cpu_dai);
snd_soc_of_put_dai_link_codecs(codec_link);
+err_put_node:
+ of_node_put(codec);
return ret;
}