[dpdk-dev] [PATCH v2] net/failsafe: fix starting failsafe with invalid MAC

Raslan Darawsheh rasland at mellanox.com
Mon May 7 17:11:17 CEST 2018


hotplug alarm is the mechanism used to initialize the failsafe process
(trying to reconfigure all failsafe sub devices every few seconds.)

When starting failsafe with a MAC option, and giving it an invalid MAC
address this will lead to a NULL pointer for the dev private field. Then
when the hotplug alarm is called it will try to access this pointer,
which will lead to a segmentation fault.

This commit fixes this issue by removing the installed hotplug alarm in
case of invalid MAC address.

Fixes: a46f8d58 ("net/failsafe: add fail-safe PMD")

Signed-off-by: Raslan Darawsheh <rasland at mellanox.com>

---
v2 changes:
 Reword the commit log.
---
---
 drivers/net/failsafe/failsafe.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/failsafe/failsafe.c b/drivers/net/failsafe/failsafe.c
index 5e7a8ba..3a747c2 100644
--- a/drivers/net/failsafe/failsafe.c
+++ b/drivers/net/failsafe/failsafe.c
@@ -226,7 +226,7 @@ fs_eth_dev_create(struct rte_vdev_device *vdev)
 							       mac);
 			if (ret) {
 				ERROR("Failed to set default MAC address");
-				goto free_args;
+				goto cancel_alarm;
 			}
 		}
 	} else {
@@ -260,6 +260,8 @@ fs_eth_dev_create(struct rte_vdev_device *vdev)
 		.type = RTE_INTR_HANDLE_EXT,
 	};
 	return 0;
+cancel_alarm:
+	failsafe_hotplug_alarm_cancel(dev);
 free_args:
 	failsafe_args_free(dev);
 free_subs:
-- 
2.7.4



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