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Mon, 12 Jun 2023 23:24:02 -0700 (PDT) Date: Tue, 13 Jun 2023 14:23:50 +0800 Mime-Version: 1.0 X-Mailer: git-send-email 2.41.0.162.gfafddb0af9-goog Message-ID: <20230613062350.271107-1-yixuanjiang@google.com> Subject: [PATCH] ASoC: soc-compress: Fix deadlock in soc_compr_open_fe From: yixuanjiang To: vkoul@kernel.org, lgirdwood@gmail.com, broonie@kernel.org, perex@perex.cz, tiwai@suse.com Cc: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, yixuanjiang , stable@vger.kernel.org X-MailFrom: 3gguIZAsKCuMdNcZFSONFSLLTTLQJ.HTRFQXF-IJaJQFQXF-UWTOJHY.TWL@flex--yixuanjiang.bounces.google.com X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1 Message-ID-Hash: AYEOVOU5PIL2BSVRADMXZBT6N67XJOPT X-Message-ID-Hash: AYEOVOU5PIL2BSVRADMXZBT6N67XJOPT X-Mailman-Approved-At: Tue, 13 Jun 2023 13:28:14 +0000 X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Modify the error handling flow by release lock. The require pcm_mutex will keep holding if open fail. Fixes: aa9ff6a4955f ("ASoC: soc-compress: Reposition and add pcm_mutex") Signed-off-by: yixuanjiang Cc: stable@vger.kernel.org # v5.15+ --- sound/soc/soc-compress.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c index 256e45001f85..b6727b91dd85 100644 --- a/sound/soc/soc-compress.c +++ b/sound/soc/soc-compress.c @@ -166,6 +166,7 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) snd_soc_dai_compr_shutdown(cpu_dai, cstream, 1); out: dpcm_path_put(&list); + mutex_unlock(&fe->card->pcm_mutex); be_err: fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO; mutex_unlock(&fe->card->mutex);