This is a note to let you know that I've just added the patch titled
net: qede: stop adding events on an already destroyed workqueue
to the 5.4-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-qede-stop-adding-events-on-an-already-destroyed-.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 6d1190f5d1116e0abc7c0ff4ec86e3631023ec4d
Author: Alexander Lobakin <alobakin@xxxxxxxxxxx>
Date: Tue Jun 23 16:51:31 2020 +0300
net: qede: stop adding events on an already destroyed workqueue
[ Upstream commit 4079c7f7a2a00ab403c177ce723b560de59139c3 ]
Set rdma_wq pointer to NULL after destroying the workqueue and check
for it when adding new events to fix crashes on driver unload.
Fixes: cee9fbd8e2e9 ("qede: Add qedr framework")
Signed-off-by: Alexander Lobakin <alobakin@xxxxxxxxxxx>
Signed-off-by: Igor Russkikh <irusskikh@xxxxxxxxxxx>
Signed-off-by: Michal Kalderon <michal.kalderon@xxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/qlogic/qede/qede_rdma.c b/drivers/net/ethernet/qlogic/qede/qede_rdma.c
index 2d873ae8a234d..668ccc9d49f83 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_rdma.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_rdma.c
@@ -105,6 +105,7 @@ static void qede_rdma_destroy_wq(struct qede_dev *edev)
qede_rdma_cleanup_event(edev);
destroy_workqueue(edev->rdma_info.rdma_wq);
+ edev->rdma_info.rdma_wq = NULL;
}
int qede_rdma_dev_add(struct qede_dev *edev, bool recovery)
@@ -325,7 +326,7 @@ static void qede_rdma_add_event(struct qede_dev *edev,
if (edev->rdma_info.exp_recovery)
return;
- if (!edev->rdma_info.qedr_dev)
+ if (!edev->rdma_info.qedr_dev || !edev->rdma_info.rdma_wq)
return;
/* We don't want the cleanup flow to start while we're allocating and
