ns.NetNS.Do: "fatal error: checkptr: misaligned pointer conversion"

[Cyclinder]

We got this weird error in CI, we executed the netlink.RouteList function in the pod's network namespace, but it failed. Looks like an error at the golang runtime：

Warning  FailedCreatePodSandBox  5m34s                 kubelet            Failed to create pod sandbox: rpc error: code = Unknown desc = failed to setup network for sandbox "c8c9d80ce6893631afb43bd08f01d52461b5a3eaae225058dfffda38d6f19e29": plugin type="multus" name="multus-cni-network" failed (add): [kube-system/spiderdoctor-agent-5gxfx/c77fa64a-c68d-4508-9a78-b0c7cddc721e:macvlan-vlan100-overlay]: error adding container to network "macvlan-vlan100-overlay": netplugin failed: "fatal error: checkptr: misaligned pointer conversion\n\ngoroutine 62 [running, locked to thread]:\nruntime.throw({0x2909a8f?, 0x24b9b7f?})\n\t/usr/local/go/src/runtime/panic.go:1047 +0x5d fp=0xc00069f0c0 sp=0xc00069f090 pc=0x470edd\nruntime.checkptrAlignment(0xc0003ff160?, 0x14?, 0x388?)\n\t/usr/local/go/src/runtime/checkptr.go:20 +0x7d fp=0xc00069f0e0 sp=0xc00069f0c0 pc=0x43eadd\ngithub.com/vishvananda/netlink/nl.DeserializeRtNexthop(...)\n\t/src/vendor/github.com/vishvananda/netlink/nl/route_linux.go:51\ngithub.com/vishvananda/netlink.deserializeRoute.func1({0xc0003ff174, 0x1c, 0x374})\n\t/src/vendor/github.com/vishvananda/netlink/route_linux.go:1131 +0x86 fp=0xc00069f218 sp=0xc00069f0e0 pc=0x24baa06\ngithub.com/vishvananda/netlink.deserializeRoute({_, _, _})\n\t/src/vendor/github.com/vishvananda/netlink/route_linux.go:1189 +0x119f fp=0xc00069f5e8 sp=0xc00069f218 pc=0x24b9b7f\ngithub.com/vishvananda/netlink.(*Handle).RouteListFiltered(0x3ac2840?, 0x0, 0x0, 0x40)\n\t/src/vendor/github.com/vishvananda/netlink/route_linux.go:1038 +0x468 fp=0xc00069fb28 sp=0xc00069f5e8 pc=0x24b8048\ngithub.com/vishvananda/netlink.(*Handle).RouteList(0x4ace85?, {0x0, 0x0}, 0x25e9620?)\n\t/src/vendor/github.com/vishvananda/netlink/route_linux.go:1003 +0xc7 fp=0xc00069fcf8 sp=0xc00069fb28 pc=0x24b7b47\ngithub.com/vishvananda/netlink.RouteList(...)\n\t/src/vendor/github.com/vishvananda/netlink/route_linux.go:990\ngithub.com/spidernet-io/spiderpool/pkg/networking/networking.GetDefaultRouteInterface.func1({0xc00044efc0?, 0x4b856a?})\n\t/src/pkg/networking/networking/route.go:215 +0x7f fp=0xc00069fdb8 sp=0xc00069fcf8 pc=0x24cdcbf\ngithub.com/containernetworking/plugins/pkg/ns.(*netNS).Do.func1({0x2ca4440, 0xc00023c470})\n\t/src/vendor/github.com/containernetworking/plugins/pkg/ns/ns_linux.go:197 +0x36f fp=0xc00069ff30 sp=0xc00069fdb8 pc=0x2447f2f\ngithub.com/containernetworking/plugins/pkg/ns.(*netNS).Do.func2()\n\t/src/vendor/github.com/containernetworking/plugins/pkg/ns/ns_linux.go:218 +0xc9 fp=0xc00069ffe0 sp=0xc00069ff30 pc=0x2447a29\nruntime.goexit()\n\t/usr/local/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc00069ffe8 sp=0xc00069ffe0 pc=0x4a9b21\ncreated by github.com/containernetworking/plugins/pkg/ns.(*netNS).Do\n\t/src/vendor/github.com/containernetworking/plugins/pkg/ns/ns_linux.go:215 +0x518\n\ngoroutine 1 [semacquire, locked to thread]:\nruntime.gopark(0x46f933?, 0xc00055e6a8?, 0x0?, 0xe0?, 0xc00055e6c8?)\n\t/usr/local/go/src/runtime/proc.go:381 +0xd6 fp=0xc00055e630 sp=0xc00055e610 pc=0x473c16\nruntime.goparkunlock(...)\n\t/usr/local/go/src/runtime/proc.go:387\nruntime.semacquire1(0xc0001b5b48, 0x40?, 0x1, 0x0, 0x1?)\n\t/usr/local/go/src/runtime/sema.go:160 +0x20f fp=0xc00055e698 sp=0xc00055e630 pc=0x48680f\nsync.runtime_Semacquire(0xc0001b5b48?)\n\t/usr/local/go/src/runtime/sema.go:62 +0x27 fp=0xc00055e6d0 sp=0xc00055e698 pc=0x4a56e7\nsync.(*WaitGroup).Wait(0xc0001b5b40)\n\t/usr/local/go/src/sync/waitgroup.go:116 +0xa5 fp=0xc00055e700 sp=0xc00055e6d0 pc=0x4bd0c5\ngithub.com/containernetworking/plugins/pkg/ns.(*netNS).Do(0xc00044efc0, 0xc0004f6750)\n\t/src/vendor/github.com/containernetworking/plugins/pkg/ns/ns_linux.go:220 +0x525 fp=0xc00055e830 sp=0xc00055e700 pc=0x2447865\ngithub.com/spidernet-io/spiderpool/pkg/networking/networking.GetDefaultRouteInterface({0x2ca4440, 0xc00044efc0}, {0xc00005805c, 0x4}, 0x0)\n\t/src/pkg/networking/networking/route.go:214

Codes like this: https://github.com/spidernet-io/spiderpool/blob/562c26076fe30f6ee866300071fcf15ddf4f39c3/pkg/networking/networking/route.go#L218:

	err := netns.Do(func(_ ns.NetNS) error {
		routes, err := netlink.RouteList(nil, ipfamily)
		if err != nil {
			return err
		}
                 return nil
        })

CI log: https://github.com/spidernet-io/spiderpool/actions/runs/5208528583/jobs/9397378067#step:11:2642

I opened an issue for it in netlink: vishvananda/netlink#877.

Can someone help me?

[Cyclinder]

We can't build CNI plugins with -race flags.