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authorWen Yang <wen.yang99@zte.com.cn>2019-07-13 06:46:15 +0300
committerMark Brown <broonie@kernel.org>2019-07-16 21:17:15 +0300
commit2abee12c0ab1924a69993d2c063a39a952e7d836 (patch)
tree11b8ba762db6f3ff703ae84f0416efe2f11ca7ba /sound
parent9b6d104a6b150bd4d3e5b039340e1f6b20c2e3c1 (diff)
downloadlinux-2abee12c0ab1924a69993d2c063a39a952e7d836.tar.xz
ASoC: samsung: odroid: fix a double-free issue for cpu_dai
The cpu_dai variable is still being used after the of_node_put() call, which may result in double-free: of_node_put(cpu_dai); ---> released here ret = devm_snd_soc_register_card(dev, card); if (ret < 0) { ... goto err_put_clk_i2s; --> jump to err_put_clk_i2s ... err_put_clk_i2s: clk_put(priv->clk_i2s_bus); err_put_sclk: clk_put(priv->sclk_i2s); err_put_cpu_dai: of_node_put(cpu_dai); --> double-free here Fixes: d832d2b246c5 ("ASoC: samsung: odroid: Fix of_node refcount unbalance") 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/1562989575-33785-3-git-send-email-wen.yang99@zte.com.cn Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/samsung/odroid.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/soc/samsung/odroid.c b/sound/soc/samsung/odroid.c
index 64ebe895cdd7..f0f5fa9c27d3 100644
--- a/sound/soc/samsung/odroid.c
+++ b/sound/soc/samsung/odroid.c
@@ -308,7 +308,6 @@ static int odroid_audio_probe(struct platform_device *pdev)
ret = PTR_ERR(priv->clk_i2s_bus);
goto err_put_sclk;
}
- of_node_put(cpu_dai);
ret = devm_snd_soc_register_card(dev, card);
if (ret < 0) {
@@ -316,6 +315,7 @@ static int odroid_audio_probe(struct platform_device *pdev)
goto err_put_clk_i2s;
}
+ of_node_put(cpu_dai);
of_node_put(codec);
return 0;