From: Dan Carpenter <dan.carpenter@oracle.com>
To: shengjiu.wang@nxp.com
Cc: alsa-devel@alsa-project.org
Subject: [bug report] ASoC: fsl_easrc: Add EASRC ASoC CPU DAI drivers
Date: Fri, 24 Apr 2020 13:20:08 +0300 [thread overview]
Message-ID: <20200424102008.GA414495@mwanda> (raw)
Hello Shengjiu Wang,
This is a semi-automatic email about new static checker warnings.
The patch 955ac624058f: "ASoC: fsl_easrc: Add EASRC ASoC CPU DAI
drivers" from Apr 16, 2020, leads to the following Smatch complaint:
sound/soc/fsl/fsl_easrc.c:1529 fsl_easrc_hw_free()
warn: variable dereferenced before check 'ctx' (see line 1527)
sound/soc/fsl/fsl_easrc.c
1526 struct fsl_asrc_pair *ctx = runtime->private_data;
1527 struct fsl_easrc_ctx_priv *ctx_priv = ctx->private;
^^^^^
Dereference
1528
1529 if (ctx && (ctx_priv->ctx_streams & BIT(substream->stream))) {
^^^
This check is too late, to prevent a NULL dereference.
1530 ctx_priv->ctx_streams &= ~BIT(substream->stream);
1531 fsl_easrc_release_context(ctx);
regards,
dan carpenter
reply other threads:[~2020-04-24 10:21 UTC|newest]
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