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media: dvb-core: fix a memory leak bug 

In dvb_create_media_entity(), 'dvbdev->entity' is allocated through
kzalloc(). Then, 'dvbdev->pads' is allocated through kcalloc(). However, if
kcalloc() fails, the allocated 'dvbdev->entity' is not deallocated, leading
to a memory leak bug. To fix this issue, free 'dvbdev->entity' before
returning -ENOMEM.

Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Wenwen Wang 2019-08-18 00:45:40 -03:00 committed by Mauro Carvalho Chehab
parent b1da86fce4
commit fcd5ce4b39
1 changed files with 3 additions and 1 deletions
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4
drivers/media/dvb-core/dvbdev.c
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@ -339,9 +339,11 @@ static int dvb_create_media_entity(struct dvb_device *dvbdev,
if (npads) {
dvbdev->pads = kcalloc(npads, sizeof(*dvbdev->pads),
GFP_KERNEL);
if (!dvbdev->pads)
if (!dvbdev->pads) {
kfree(dvbdev->entity);
return -ENOMEM;
}
}
switch (type) {
case DVB_DEVICE_FRONTEND: