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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: d832d2b246 ("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>
alistair/sunxi64-5.4-dsi
Wen Yang 2019-07-13 11:46:15 +08:00 committed by Mark Brown
parent 9b6d104a6b
commit 2abee12c0a
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GPG Key ID: 24D68B725D5487D0
1 changed files with 1 additions and 1 deletions
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2
sound/soc/samsung/odroid.c
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@ -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;