From: Raul E Rangel <rrangel@chromium.org>
Date: Thu, 2 May 2019 19:07:14 +0000 (-0600)
Subject: mmc: core: Fix tag set memory leak
X-Git-Tag: v5.0.18~76
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=56f590e2e30ac5639522266fb1f4528afc189561;p=thirdparty%2Fkernel%2Fstable.git

mmc: core: Fix tag set memory leak

commit 43d8dabb4074cf7f3b1404bfbaeba5aa6f3e5cfc upstream.

The tag set is allocated in mmc_init_queue but never freed. This results
in a memory leak. This change makes sure we free the tag set when the
queue is also freed.

Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Fixes: 81196976ed94 ("mmc: block: Add blk-mq support")
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/mmc/core/queue.c b/drivers/mmc/core/queue.c
index 15a45ec6518d7..b07452e83edb0 100644
--- a/drivers/mmc/core/queue.c
+++ b/drivers/mmc/core/queue.c
@@ -473,6 +473,7 @@ void mmc_cleanup_queue(struct mmc_queue *mq)
 		blk_mq_unquiesce_queue(q);
 
 	blk_cleanup_queue(q);
+	blk_mq_free_tag_set(&mq->tag_set);
 
 	/*
 	 * A request can be completed before the next request, potentially