Even though only primary processes should setup PMDs, secondary
processes were also blanket zeroing ethernet device memory. The
result was NULL dereference crashes in multi-process setups.
Fixes: 7f95f78a8aea ("ethdev: clear data when allocating device")
Signed-off-by: Remy Horton <remy.hor...@intel.com>
---
doc/guides/rel_notes/release_17_02.rst | 6 ++++++
lib/librte_ether/rte_ethdev.c | 3 ++-
2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/doc/guides/rel_notes/release_17_02.rst
b/doc/guides/rel_notes/release_17_02.rst
index 180af82..20a4ced 100644
--- a/doc/guides/rel_notes/release_17_02.rst
+++ b/doc/guides/rel_notes/release_17_02.rst
@@ -72,6 +72,12 @@ Resolved Issues
EAL
~~~
+* **ethdev: Fixed crash with multi-processing.**
+
+ Even though only primary processes should setup PMDs, secondary
+ processes were also blanket zeroing ethernet device memory. The
+ result was NULL dereference crashes in multi-process setups.
+
Drivers
~~~~~~~
diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index 9dea1f1..a681982 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -212,7 +212,8 @@ rte_eth_dev_allocate(const char *name)
eth_dev = &rte_eth_devices[port_id];
eth_dev->data = &rte_eth_dev_data[port_id];
- memset(eth_dev->data, 0, sizeof(*eth_dev->data));
+ if (rte_eal_process_type() == RTE_PROC_PRIMARY)
+ memset(eth_dev->data, 0, sizeof(*eth_dev->data));
snprintf(eth_dev->data->name, sizeof(eth_dev->data->name), "%s", name);
eth_dev->data->port_id = port_id;
eth_dev->data->mtu = ETHER_MTU;
--
2.5.5
