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ASoC: samsung: odroid: fix an use-after-free issue for codec

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The codec variable is still being used after the of_node_put() call,
which may result in use-after-free.

Fixes: bc3cf17b57 ("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>
This commit is contained in:
Wen Yang 2019-07-13 11:46:14 +08:00 committed by Mark Brown
parent ec3042ad39
commit 9b6d104a6b
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 4 additions and 2 deletions
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6
sound/soc/samsung/odroid.c
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@ -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;
}