[dpdk-stable] patch 'net/bonding: fix crash when stopping mode 4 port' has been queued to LTS release 16.11.9

[Luca Boccassi]

Hi,

FYI, your patch has been queued to LTS release 16.11.9

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 11/21/18. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the patch applied
to the branch. If the code is different (ie: not only metadata diffs), due for example to
a change in context or macro names, please double check it.

Thanks.

Luca Boccassi

---
>From 9d89b51cf490e720c58538f47aa9beb356fc009b Mon Sep 17 00:00:00 2001
From: Radu Nicolau <radu.nicolau at intel.com>
Date: Thu, 8 Nov 2018 15:26:42 +0000
Subject: [PATCH] net/bonding: fix crash when stopping mode 4 port

[ upstream commit 0911d4ec01839c9149a0df5758d00d9d57a47cea ]

When stopping a bonded port all slaves are deactivated. Attempting
to deactivate a slave that was never activated will result in a segfault
when mode 4 is used.

Fixes: 7486331308f6 ("net/bonding: stop and deactivate slaves on stop")

Signed-off-by: Radu Nicolau <radu.nicolau at intel.com>
Acked-by: Chas Williams <chas3 at att.com>
---
 drivers/net/bonding/rte_eth_bond_pmd.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/net/bonding/rte_eth_bond_pmd.c b/drivers/net/bonding/rte_eth_bond_pmd.c
index ebde93259..103f55856 100644
--- a/drivers/net/bonding/rte_eth_bond_pmd.c
+++ b/drivers/net/bonding/rte_eth_bond_pmd.c
@@ -1674,9 +1674,14 @@ bond_ethdev_stop(struct rte_eth_dev *eth_dev)
 
 	internals->link_status_polling_enabled = 0;
 	for (i = 0; i < internals->slave_count; i++) {
-		internals->slaves[i].last_link_status = 0;
-		rte_eth_dev_stop(internals->slaves[i].port_id);
-		deactivate_slave(eth_dev, internals->slaves[i].port_id);
+		uint16_t slave_id = internals->slaves[i].port_id;
+		if (find_slave_by_id(internals->active_slaves,
+				internals->active_slave_count, slave_id) !=
+						internals->active_slave_count) {
+			internals->slaves[i].last_link_status = 0;
+			rte_eth_dev_stop(slave_id);
+			deactivate_slave(eth_dev, slave_id);
+		}
 	}
 }
 
-- 
2.19.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2018-11-19 12:15:18.338022695 +0000
+++ 0011-net-bonding-fix-crash-when-stopping-mode-4-port.patch	2018-11-19 12:15:18.099611432 +0000
@@ -1,14 +1,15 @@
-From 0911d4ec01839c9149a0df5758d00d9d57a47cea Mon Sep 17 00:00:00 2001
+From 9d89b51cf490e720c58538f47aa9beb356fc009b Mon Sep 17 00:00:00 2001
 From: Radu Nicolau <radu.nicolau at intel.com>
 Date: Thu, 8 Nov 2018 15:26:42 +0000
 Subject: [PATCH] net/bonding: fix crash when stopping mode 4 port
 
+[ upstream commit 0911d4ec01839c9149a0df5758d00d9d57a47cea ]
+
 When stopping a bonded port all slaves are deactivated. Attempting
 to deactivate a slave that was never activated will result in a segfault
 when mode 4 is used.
 
 Fixes: 7486331308f6 ("net/bonding: stop and deactivate slaves on stop")
-Cc: stable at dpdk.org
 
 Signed-off-by: Radu Nicolau <radu.nicolau at intel.com>
 Acked-by: Chas Williams <chas3 at att.com>
@@ -17,10 +18,10 @@
  1 file changed, 8 insertions(+), 3 deletions(-)
 
 diff --git a/drivers/net/bonding/rte_eth_bond_pmd.c b/drivers/net/bonding/rte_eth_bond_pmd.c
-index 1a6d8e4df..2661620ab 100644
+index ebde93259..103f55856 100644
 --- a/drivers/net/bonding/rte_eth_bond_pmd.c
 +++ b/drivers/net/bonding/rte_eth_bond_pmd.c
-@@ -2181,9 +2181,14 @@ bond_ethdev_stop(struct rte_eth_dev *eth_dev)
+@@ -1674,9 +1674,14 @@ bond_ethdev_stop(struct rte_eth_dev *eth_dev)
  
  	internals->link_status_polling_enabled = 0;
  	for (i = 0; i < internals->slave_count; i++) {