| #!/bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # shellcheck disable=SC2154 |
| # |
| # Reproduce the non-Ethernet header_ops confusion scenario with: |
| # g0 (gre) -> b0 (bond) -> t0 (team) |
| # |
| # Before the fix, direct header_ops inheritance in this stack could call |
| # callbacks with the wrong net_device context and crash. |
| |
| lib_dir=$(dirname "$0") |
| source "$lib_dir"/../../../net/lib.sh |
| |
| trap cleanup_all_ns EXIT |
| |
| setup_ns ns1 |
| |
| ip -n "$ns1" link add d0 type dummy |
| ip -n "$ns1" addr add 10.10.10.1/24 dev d0 |
| ip -n "$ns1" link set d0 up |
| |
| ip -n "$ns1" link add g0 type gre local 10.10.10.1 |
| ip -n "$ns1" link add b0 type bond mode active-backup |
| ip -n "$ns1" link add t0 type team |
| |
| ip -n "$ns1" link set g0 master b0 |
| ip -n "$ns1" link set b0 master t0 |
| |
| ip -n "$ns1" link set g0 up |
| ip -n "$ns1" link set b0 up |
| ip -n "$ns1" link set t0 up |
| |
| # IPv6 address assignment triggers MLD join reports that call |
| # dev_hard_header() on t0, exercising the inherited header_ops path. |
| ip -n "$ns1" -6 addr add 2001:db8:1::1/64 dev t0 nodad |
| for i in $(seq 1 20); do |
| ip netns exec "$ns1" ping -6 -I t0 ff02::1 -c1 -W1 &>/dev/null || true |
| done |
| |
| echo "PASS: non-Ethernet header_ops stacking did not crash" |
| exit "$EXIT_STATUS" |
