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Message-Id: <20191110024846.32598-7-sashal@kernel.org>
Date: Sat, 9 Nov 2019 21:47:46 -0500
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: Håkon Bugge <Haakon.Bugge@...cle.com>,
Håkon Bugge <haakon.bugge@...cle.com>,
Jason Gunthorpe <jgg@...lanox.com>,
Sasha Levin <sashal@...nel.org>, linux-rdma@...r.kernel.org
Subject: [PATCH AUTOSEL 4.9 07/66] RDMA/i40iw: Fix incorrect iterator type
From: Håkon Bugge <Haakon.Bugge@...cle.com>
[ Upstream commit 802fa45cd320de319e86c93bca72abec028ba059 ]
Commit f27b4746f378 ("i40iw: add connection management code") uses an
incorrect rcu iterator, whilst holding the rtnl_lock. Since the
critical region invokes i40iw_manage_qhash(), which is a sleeping
function, the rcu locking and traversal cannot be used.
Signed-off-by: Håkon Bugge <haakon.bugge@...cle.com>
Signed-off-by: Jason Gunthorpe <jgg@...lanox.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/infiniband/hw/i40iw/i40iw_cm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/i40iw/i40iw_cm.c b/drivers/infiniband/hw/i40iw/i40iw_cm.c
index 85637696f6e96..282a726351c81 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_cm.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_cm.c
@@ -1652,7 +1652,7 @@ static enum i40iw_status_code i40iw_add_mqh_6(struct i40iw_device *iwdev,
unsigned long flags;
rtnl_lock();
- for_each_netdev_rcu(&init_net, ip_dev) {
+ for_each_netdev(&init_net, ip_dev) {
if ((((rdma_vlan_dev_vlan_id(ip_dev) < I40IW_NO_VLAN) &&
(rdma_vlan_dev_real_dev(ip_dev) == iwdev->netdev)) ||
(ip_dev == iwdev->netdev)) && (ip_dev->flags & IFF_UP)) {
--
2.20.1
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