From: Samuel Holland <samuel@sholland.org> To: Liam Girdwood <lgirdwood@gmail.com>, Mark Brown <broonie@kernel.org>, Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>, Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>, Jonathan Corbet <corbet@lwn.net>, Jerome Brunet <jbrunet@baylibre.com> Cc: alsa-devel@alsa-project.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, Samuel Holland <samuel@sholland.org>, stable@vger.kernel.org Subject: [PATCH 1/4] ASoC: codec2codec: avoid invalid/double-free of pcm runtime Date: Thu, 13 Feb 2020 00:11:44 -0600 [thread overview] Message-ID: <20200213061147.29386-2-samuel@sholland.org> (raw) In-Reply-To: <20200213061147.29386-1-samuel@sholland.org> The PCM runtime was freed during PMU in the case that the event hook encountered an error. However, it is also unconditionally freed during PMD. Avoid a double-free by dropping the call to kfree in the PMU hook. Fixes: a72706ed8208 ("ASoC: codec2codec: remove ephemeral variables") Cc: stable@vger.kernel.org Signed-off-by: Samuel Holland <samuel@sholland.org> --- sound/soc/soc-dapm.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index b6378f025836..935b5375ecc5 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -3888,9 +3888,6 @@ snd_soc_dai_link_event_pre_pmu(struct snd_soc_dapm_widget *w, runtime->rate = params_rate(params); out: - if (ret < 0) - kfree(runtime); - kfree(params); return ret; } -- 2.24.1
WARNING: multiple messages have this Message-ID (diff)
From: Samuel Holland <samuel@sholland.org> To: Liam Girdwood <lgirdwood@gmail.com>, Mark Brown <broonie@kernel.org>, Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>, Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>, Jonathan Corbet <corbet@lwn.net>, Jerome Brunet <jbrunet@baylibre.com> Cc: devicetree@vger.kernel.org, alsa-devel@alsa-project.org, Samuel Holland <samuel@sholland.org>, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [alsa-devel] [PATCH 1/4] ASoC: codec2codec: avoid invalid/double-free of pcm runtime Date: Thu, 13 Feb 2020 00:11:44 -0600 [thread overview] Message-ID: <20200213061147.29386-2-samuel@sholland.org> (raw) In-Reply-To: <20200213061147.29386-1-samuel@sholland.org> The PCM runtime was freed during PMU in the case that the event hook encountered an error. However, it is also unconditionally freed during PMD. Avoid a double-free by dropping the call to kfree in the PMU hook. Fixes: a72706ed8208 ("ASoC: codec2codec: remove ephemeral variables") Cc: stable@vger.kernel.org Signed-off-by: Samuel Holland <samuel@sholland.org> --- sound/soc/soc-dapm.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index b6378f025836..935b5375ecc5 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -3888,9 +3888,6 @@ snd_soc_dai_link_event_pre_pmu(struct snd_soc_dapm_widget *w, runtime->rate = params_rate(params); out: - if (ret < 0) - kfree(runtime); - kfree(params); return ret; } -- 2.24.1 _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
next prev parent reply other threads:[~2020-02-13 6:12 UTC|newest] Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-02-13 6:11 [PATCH 0/4] simple-audio-card codec2codec support Samuel Holland 2020-02-13 6:11 ` [alsa-devel] " Samuel Holland 2020-02-13 6:11 ` Samuel Holland [this message] 2020-02-13 6:11 ` [alsa-devel] [PATCH 1/4] ASoC: codec2codec: avoid invalid/double-free of pcm runtime Samuel Holland 2020-02-13 8:37 ` Jerome Brunet 2020-02-13 8:37 ` [alsa-devel] " Jerome Brunet 2020-02-13 11:37 ` Mark Brown 2020-02-13 11:37 ` [alsa-devel] " Mark Brown 2020-02-13 13:37 ` Jerome Brunet 2020-02-13 13:37 ` [alsa-devel] " Jerome Brunet 2020-02-13 13:31 ` Applied "ASoC: codec2codec: avoid invalid/double-free of pcm runtime" to the asoc tree Mark Brown 2020-02-13 13:31 ` [alsa-devel] " Mark Brown 2020-02-13 6:11 ` [PATCH 2/4] ALSA: pcm: Make snd_pcm_limit_hw_rates take hw directly Samuel Holland 2020-02-13 6:11 ` [alsa-devel] " Samuel Holland 2020-02-13 6:30 ` Takashi Iwai 2020-02-13 6:30 ` [alsa-devel] " Takashi Iwai 2020-02-15 3:19 ` Samuel Holland 2020-02-15 3:19 ` [alsa-devel] " Samuel Holland 2020-02-13 6:11 ` [PATCH 3/4] ASoC: pcm: Export parameter intersection logic Samuel Holland 2020-02-13 6:11 ` [alsa-devel] " Samuel Holland 2020-02-13 6:11 ` [PATCH 4/4] ASoC: simple-card: Add support for codec-to-codec dai_links Samuel Holland 2020-02-13 6:11 ` [alsa-devel] " Samuel Holland 2020-02-13 9:18 ` Jerome Brunet 2020-02-13 9:18 ` [alsa-devel] " Jerome Brunet 2020-02-13 11:38 ` Mark Brown 2020-02-13 11:38 ` [alsa-devel] " Mark Brown
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