rtnl: fix segmentation fault on parsing linkinfo RTA without data

Some link types, such as veth, yield an IFLA_LINKINFO nla without an
embedded IFLA_INFO_DATA / INFLA_INFO_SLAVE_DATA nla which causes the
nla converter to dereference a NULL nla pointer.

Properly deal with such cases and check for the existence of the
child nla before attempting to parse it.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

0 files changed, 0 insertions, 0 deletions