Patch "net: phy: Fix PHY unbind crash" has been added to the 4.9-stable tree

This is a note to let you know that I've just added the patch titled

net: phy: Fix PHY unbind crash

to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
net-phy-fix-phy-unbind-crash.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Florian Fainelli <[email protected]>
Date: Fri, 17 Feb 2017 16:07:33 -0800
Subject: net: phy: Fix PHY unbind crash

From: Florian Fainelli <[email protected]>

commit 7b9a88a390dacb37b051a7b09b9a08f546edf5eb upstream.

The PHY library does not deal very well with bind and unbind events. The first thing we would see is that we were not properly canceling the PHY state machine workqueue, so we would be crashing while dereferencing phydev->drv since there is no driver attached anymore.

---
 drivers/net/phy/phy_device.c |    2 ++
 1 file changed, 2 insertions(+)

@@ -1714,6 +1714,8 @@ static int phy_remove(struct device *dev
 {
 	struct phy_device *phydev = to_phy_device(dev);
 
+	cancel_delayed_work_sync(&phydev->state_queue);
+
 	mutex_lock(&phydev->lock);
 	phydev->state = PHY_DOWN;
 	mutex_unlock(&phydev->lock);

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/net-phy-dp83867-fix-irq-generation.patch queue-4.9/net-phy-fix-phy-unbind-crash.patch queue-4.9/net-dsa-b53-add-missing-arl-entries-for-bcm53125.patch queue-4.9/net-phy-correctly-process-phy_halted-in-phy_stop_machine.patch queue-4.9/phy-state-machine-failsafe-leave-invalid-running-state.patch