releases/4.19.45/mmc-core-fix-tag-set-memory-leak.patch

   1 From 43d8dabb4074cf7f3b1404bfbaeba5aa6f3e5cfc Mon Sep 17 00:00:00 2001
   2 From: Raul E Rangel <rrangel@chromium.org>
   3 Date: Thu, 2 May 2019 13:07:14 -0600
   4 Subject: mmc: core: Fix tag set memory leak
   5
   6 From: Raul E Rangel <rrangel@chromium.org>
   7
   8 commit 43d8dabb4074cf7f3b1404bfbaeba5aa6f3e5cfc upstream.
   9
  10 The tag set is allocated in mmc_init_queue but never freed. This results
  11 in a memory leak. This change makes sure we free the tag set when the
  12 queue is also freed.
  13
  14 Signed-off-by: Raul E Rangel <rrangel@chromium.org>
  15 Reviewed-by: Jens Axboe <axboe@kernel.dk>
  16 Acked-by: Adrian Hunter <adrian.hunter@intel.com>
  17 Fixes: 81196976ed94 ("mmc: block: Add blk-mq support")
  18 Cc: stable@vger.kernel.org
  19 Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
  20 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  21
  22 ---
  23  drivers/mmc/core/queue.c |    1 +
  24  1 file changed, 1 insertion(+)
  25
  26 --- a/drivers/mmc/core/queue.c
  27 +++ b/drivers/mmc/core/queue.c
  28 @@ -494,6 +494,7 @@ void mmc_cleanup_queue(struct mmc_queue
  29                 blk_mq_unquiesce_queue(q);
  30
  31         blk_cleanup_queue(q);
  32 +       blk_mq_free_tag_set(&mq->tag_set);
  33
  34         /*
  35          * A request can be completed before the next request, potentially