[dpdk-dev] [PATCH] app/testpmd: fix crash when doing port info of vdev

[Stephen Hemminger <stephen@networkplumber.org>]

From: Stephen Hemminger <sthemmin@microsoft.com>

Noticed a SEGV in testpmd doing:
 > show port info 1
on Hyper-V with failsafe/tap PMD.

A vdev may not have an associated device (i.e NULL) and therefore
testpmd should skip devargs in that case.

Fixes: cf72ed09181b ("app/testpmd: display devargs in port info output")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
---
 app/test-pmd/config.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index b9e5dd923b0f..38708db943d2 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -415,7 +415,8 @@ port_infos_display(portid_t port_id)
 	rte_eth_dev_get_name_by_port(port_id, name);
 	printf("\nDevice name: %s", name);
 	printf("\nDriver name: %s", dev_info.driver_name);
-	if (dev_info.device->devargs && dev_info.device->devargs->args)
+	if (dev_info.device && dev_info.device->devargs &&
+	    dev_info.device->devargs->args)
 		printf("\nDevargs: %s", dev_info.device->devargs->args);
 	printf("\nConnect to socket: %u", port->socket_id);
 
-- 
2.17.1