From: Bard Liao <yung-chuan.liao@linux.intel.com> To: alsa-devel@alsa-project.org, vkoul@kernel.org Cc: vinod.koul@linaro.org, linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org, srinivas.kandagatla@linaro.org, rander.wang@linux.intel.com, hui.wang@canonical.com, pierre-louis.bossart@linux.intel.com, sanyog.r.kale@intel.com, bard.liao@intel.com Subject: [PATCH] soundwire: stream: fix memory leak in stream config error path Date: Wed, 31 Mar 2021 08:46:10 +0800 [thread overview] Message-ID: <20210331004610.12242-1-yung-chuan.liao@linux.intel.com> (raw) From: Rander Wang <rander.wang@intel.com> When stream config is failed, master runtime will release all slave runtime in the slave_rt_list, but slave runtime is not added to the list at this time. This patch frees slave runtime in the config error path to fix the memory leak. Fixes: bbe7379d8040a ("soundwire: Add support for SoundWire stream management") Signed-off-by: Rander Wang <rander.wang@intel.com> Reviewed-by: Keyon Jie <yang.jie@intel.com> Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> --- drivers/soundwire/stream.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/soundwire/stream.c b/drivers/soundwire/stream.c index 9c064b672745..1eaedaaba094 100644 --- a/drivers/soundwire/stream.c +++ b/drivers/soundwire/stream.c @@ -1375,8 +1375,16 @@ int sdw_stream_add_slave(struct sdw_slave *slave, } ret = sdw_config_stream(&slave->dev, stream, stream_config, true); - if (ret) + if (ret) { + /* + * sdw_release_master_stream will release s_rt in slave_rt_list in + * stream_error case, but s_rt is only added to slave_rt_list + * when sdw_config_stream is successful, so free s_rt explicitly + * when sdw_config_stream is failed. + */ + kfree(s_rt); goto stream_error; + } list_add_tail(&s_rt->m_rt_node, &m_rt->slave_rt_list); -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Bard Liao <yung-chuan.liao@linux.intel.com> To: alsa-devel@alsa-project.org, vkoul@kernel.org Cc: vinod.koul@linaro.org, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, pierre-louis.bossart@linux.intel.com, hui.wang@canonical.com, sanyog.r.kale@intel.com, rander.wang@linux.intel.com, bard.liao@intel.com Subject: [PATCH] soundwire: stream: fix memory leak in stream config error path Date: Wed, 31 Mar 2021 08:46:10 +0800 [thread overview] Message-ID: <20210331004610.12242-1-yung-chuan.liao@linux.intel.com> (raw) From: Rander Wang <rander.wang@intel.com> When stream config is failed, master runtime will release all slave runtime in the slave_rt_list, but slave runtime is not added to the list at this time. This patch frees slave runtime in the config error path to fix the memory leak. Fixes: bbe7379d8040a ("soundwire: Add support for SoundWire stream management") Signed-off-by: Rander Wang <rander.wang@intel.com> Reviewed-by: Keyon Jie <yang.jie@intel.com> Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> --- drivers/soundwire/stream.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/soundwire/stream.c b/drivers/soundwire/stream.c index 9c064b672745..1eaedaaba094 100644 --- a/drivers/soundwire/stream.c +++ b/drivers/soundwire/stream.c @@ -1375,8 +1375,16 @@ int sdw_stream_add_slave(struct sdw_slave *slave, } ret = sdw_config_stream(&slave->dev, stream, stream_config, true); - if (ret) + if (ret) { + /* + * sdw_release_master_stream will release s_rt in slave_rt_list in + * stream_error case, but s_rt is only added to slave_rt_list + * when sdw_config_stream is successful, so free s_rt explicitly + * when sdw_config_stream is failed. + */ + kfree(s_rt); goto stream_error; + } list_add_tail(&s_rt->m_rt_node, &m_rt->slave_rt_list); -- 2.17.1
next reply other threads:[~2021-03-31 0:47 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-03-31 0:46 Bard Liao [this message] 2021-03-31 0:46 ` [PATCH] soundwire: stream: fix memory leak in stream config error path Bard Liao 2021-04-01 7:20 ` Vinod Koul 2021-04-01 7:20 ` Vinod Koul
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