linux-kernel - [PATCH 5.0 045/123] mmc: core: Fix tag set memory leak

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Message-Id: <20190520115247.735630174@linuxfoundation.org>
Date:   Mon, 20 May 2019 14:13:45 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Raul E Rangel <rrangel@...omium.org>,
        Jens Axboe <axboe@...nel.dk>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Ulf Hansson <ulf.hansson@...aro.org>
Subject: [PATCH 5.0 045/123] mmc: core: Fix tag set memory leak

From: Raul E Rangel <rrangel@...omium.org>

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@...omium.org>
Reviewed-by: Jens Axboe <axboe@...nel.dk>
Acked-by: Adrian Hunter <adrian.hunter@...el.com>
Fixes: 81196976ed94 ("mmc: block: Add blk-mq support")
Cc: stable@...r.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/mmc/core/queue.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/mmc/core/queue.c
+++ b/drivers/mmc/core/queue.c
@@ -473,6 +473,7 @@ void mmc_cleanup_queue(struct mmc_queue
 		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