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greybus: sdio: fix tear-down use-after-free

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The mmc-driver private data must not be accessed after mmc_free_host()
has released it.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Johan Hovold 2015-09-14 20:19:03 +02:00 • committed by Greg Kroah-Hartman
commit e5265266ec
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/greybus/sdio.c
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@ -750,8 +750,8 @@ static void gb_sdio_connection_exit(struct gb_connection *connection)
flush_workqueue(gb_sdio_mrq_workqueue);
destroy_workqueue(gb_sdio_mrq_workqueue);
mmc_remove_host(mmc);
mmc_free_host(mmc);
kfree(host->xfer_buffer);
mmc_free_host(mmc);
}
static struct gb_protocol sdio_protocol = {