commit c0a2e4d10d upstream.
Work for Bridgeport events is currently placed on a driver-wide
workqueue. If the card is removed and freed while any such work is still
active, this causes a use-after-free.
So put the events on a per-card queue, where we can control their
lifetime. As we also don't want stale events to last beyond an
offline & online cycle, flush this queue when setting the card offline.
Fixes: b4d72c08b3 ("qeth: bridgeport support - basic control")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
[bwh: Backported to 3.16:
- Add gdev parameter to qeth_alloc_card(), as done upstream by commit
121ca39aa5 "s390/qeth: uninstall IRQ handler on device removal"
- Adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
4bdd0b2626