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staging: fsl-dpaa2: ethsw: Add missing netdevice check

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port_switchdev_event() does not check that the target network device is
actually backed by the ethsw driver, this could be problematic in a
stacked environment case.

Fixes: 44baaa43d7cc ("staging: fsl-dpaa2/ethsw: Add Freescale DPAA2 Ethernet Switch driver")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Florian Fainelli 2019-02-22 14:02:14 -08:00 committed by Greg Kroah-Hartman
parent 2c62d36c81
commit 11f27765f6
1 changed files with 3 additions and 0 deletions
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drivers/staging/fsl-dpaa2/ethsw/ethsw.c
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@ -1047,6 +1047,9 @@ static int port_switchdev_event(struct notifier_block *unused,
struct ethsw_switchdev_event_work *switchdev_work;
struct switchdev_notifier_fdb_info *fdb_info = ptr;
if (!ethsw_port_dev_check(dev))
return NOTIFY_DONE;
switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC);
if (!switchdev_work)
return NOTIFY_BAD;