| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.10 312/717] ASoC: cros_ec_codec: fix uninitialized memory read | Date | Mon, 28 Dec 2020 13:45:10 +0100 |
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From: Arnd Bergmann <arnd@arndb.de>
[ Upstream commit 7061b8a52296e044eed47b605d136a48da1a7761 ]
gcc points out a memory area that is copied to a device but not initialized:
sound/soc/codecs/cros_ec_codec.c: In function 'i2s_rx_event': arch/x86/include/asm/string_32.h:83:20: error: '*((void *)&p+4)' may be used uninitialized in this function [-Werror=maybe-uninitialized] 83 | *((int *)to + 1) = *((int *)from + 1);
Initialize all the unused fields to zero.
Fixes: 727f1c71c780 ("ASoC: cros_ec_codec: refactor I2S RX") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Tzung-Bi Shih <tzungbi@google.com> Link: https://lore.kernel.org/r/20201203225458.1477830-1-arnd@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- sound/soc/codecs/cros_ec_codec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/soc/codecs/cros_ec_codec.c b/sound/soc/codecs/cros_ec_codec.c index 28f039adfa138..5c3b7e5e55d23 100644 --- a/sound/soc/codecs/cros_ec_codec.c +++ b/sound/soc/codecs/cros_ec_codec.c @@ -332,7 +332,7 @@ static int i2s_rx_event(struct snd_soc_dapm_widget *w, snd_soc_dapm_to_component(w->dapm); struct cros_ec_codec_priv *priv = snd_soc_component_get_drvdata(component); - struct ec_param_ec_codec_i2s_rx p; + struct ec_param_ec_codec_i2s_rx p = {}; switch (event) { case SND_SOC_DAPM_PRE_PMU: -- 2.27.0
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