Linux 4.19.45

[thirdparty/kernel/stable-queue.git] / releases / 4.19.45 / mmc-core-fix-tag-set-memory-leak.patch

From 43d8dabb4074cf7f3b1404bfbaeba5aa6f3e5cfc Mon Sep 17 00:00:00 2001
From: Raul E Rangel <rrangel@chromium.org>
Date: Thu, 2 May 2019 13:07:14 -0600
Subject: mmc: core: Fix tag set memory leak

From: Raul E Rangel <rrangel@chromium.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@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>

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

--- a/drivers/mmc/core/queue.c
+++ b/drivers/mmc/core/queue.c
@@ -494,6 +494,7 @@ 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