From a5e9ca573b5fe47aef30e9c33c31b5fe7b0dfb88 Mon Sep 17 00:00:00 2001 From: Sebastian Ott Date: Mon, 7 Sep 2015 19:52:31 +0200 Subject: [PATCH] s390/cio: fix memleak in channel measurement The measurement block for the extended measurement data is not freed when switching off per device measurement. Free the measurement block after HW stopped accessing it. Signed-off-by: Sebastian Ott Reviewed-by: Martin Schwidefsky Reviewed-by: Cornelia Huck Signed-off-by: Martin Schwidefsky --- drivers/s390/cio/cmf.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/s390/cio/cmf.c b/drivers/s390/cio/cmf.c index 59b1ac24f992..0d1898e51171 100644 --- a/drivers/s390/cio/cmf.c +++ b/drivers/s390/cio/cmf.c @@ -876,8 +876,10 @@ static void free_cmbe(struct ccw_device *cdev) spin_lock_irq(cdev->ccwlock); cmb_data = cdev->private->cmb; cdev->private->cmb = NULL; - if (cmb_data) + if (cmb_data) { kfree(cmb_data->last_block); + kfree(cmb_data->hw_block); + } kfree(cmb_data); /* deactivate global measurement if this is the last channel */