On 4/13/26 5:45 AM, Jiayuan Chen wrote: > Add test cases that exercise the scenario where an IPv6 nexthop is > replaced with an IPv4 nexthop while being part of a group. The group's > has_v4 flag must be updated so that subsequent IPv6 route additions are > properly rejected. > > Two cases are covered: > 1. Gateway nexthop replaced across families with an existing IPv6 > route on the group (rejected by fib6_check_nh_list). > 2. Blackhole nexthop replaced across families with no existing IPv6 > route on the group (fib6_check_nh_list returns early) — this is > the path that triggers a NULL ptr deref without the kernel fix. > > Signed-off-by: Jiayuan Chen <[email protected]> > --- > tools/testing/selftests/net/fib_nexthops.sh | 22 +++++++++++++++++++++ > 1 file changed, 22 insertions(+) >
Reviewed-by: David Ahern <[email protected]>
