[dpdk-dev] [PATCH v3 02/14] bus/fslmc: fix null pointer dereference

[Maxime Coquelin]

This patches fixes a null pointer derefencing that happens
when the device string passed to the iterator is NULL. This
situation can happen when iterating on a class type.
For example:

RTE_DEV_FOREACH(dev, "class=eth", &dev_iter) {
    ...
}

Fixes: e67a61614d0b ("bus/fslmc: support device iteration")
Cc: sta...@dpdk.org

Acked-by: Adrián Moreno <amore...@redhat.com>
Signed-off-by: Maxime Coquelin <maxime.coque...@redhat.com>
---
 drivers/bus/fslmc/fslmc_bus.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/bus/fslmc/fslmc_bus.c b/drivers/bus/fslmc/fslmc_bus.c
index afbd82e8db..ac46eb4fe8 100644
--- a/drivers/bus/fslmc/fslmc_bus.c
+++ b/drivers/bus/fslmc/fslmc_bus.c
@@ -603,6 +603,11 @@ fslmc_bus_dev_iterate(const void *start, const char *str,
        struct rte_dpaa2_device *dev;
        char *dup, *dev_name = NULL;
 
+       if (str == NULL) {
+               DPAA2_BUS_DEBUG("No device string");
+               return NULL;
+       }
+
        /* Expectation is that device would be name=device_name */
        if (strncmp(str, "name=", 5) != 0) {
                DPAA2_BUS_DEBUG("Invalid device string (%s)\n", str);
-- 
2.26.2