Currently it is possible to call netdev-dpdk/get-mempool-info before a
mempool as been created. This can happen because a device is added to
the netdev_shash before a mempool is allocated for it, which results in
a segmentation fault.
Now we check for a NULL value before attempting to dereference it.
Fixes: be4817331071 ("netdev-dpdk: Add debug appctl to get mempool
information.")
Signed-off-by: Mike Pattrick <[email protected]>
---
lib/netdev-dpdk.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/lib/netdev-dpdk.c b/lib/netdev-dpdk.c
index 02cef6e45..6afa6da88 100644
--- a/lib/netdev-dpdk.c
+++ b/lib/netdev-dpdk.c
@@ -4664,10 +4664,14 @@ netdev_dpdk_get_mempool_info(struct unixctl_conn *conn,
ovs_mutex_lock(&dev->mutex);
ovs_mutex_lock(&dpdk_mp_mutex);
- rte_mempool_dump(stream, dev->dpdk_mp->mp);
- fprintf(stream, " count: avail (%u), in use (%u)\n",
- rte_mempool_avail_count(dev->dpdk_mp->mp),
- rte_mempool_in_use_count(dev->dpdk_mp->mp));
+ if (dev->dpdk_mp) {
+ rte_mempool_dump(stream, dev->dpdk_mp->mp);
+ fprintf(stream, " count: avail (%u), in use (%u)\n",
+ rte_mempool_avail_count(dev->dpdk_mp->mp),
+ rte_mempool_in_use_count(dev->dpdk_mp->mp));
+ } else {
+ fprintf(stream, " Not allocated\n");
+ }
ovs_mutex_unlock(&dpdk_mp_mutex);
ovs_mutex_unlock(&dev->mutex);
--
2.39.3
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