TcHook.Detach() always raises the failed to detach tc hook: invalid argument error.

[mozillazg]

TcHook.Detach() always raises the failed to detach tc hook: invalid argument error.

$ git diff
diff --git a/selftest/tc/main.go b/selftest/tc/main.go
index 0174eb1..4137fc2 100644
--- a/selftest/tc/main.go
+++ b/selftest/tc/main.go
@@ -61,6 +61,12 @@ func main() {
                fmt.Fprintln(os.Stderr, err)
                os.Exit(-1)
        }
+       defer func() {
+               if err := hook.Detach(&tcOpts); err != nil {
+                       fmt.Fprintln(os.Stderr, err)
+                       os.Exit(-1)
+               }
+       }()
 
        eventsChannel := make(chan []byte)
        rb, err := bpfModule.InitRingBuf("events", eventsChannel)

$ make run
...
failed to detach tc hook: invalid argument
[!] ERROR: test error

test with the main branch: a55c024

[geyslan]

@mozillazg I couldn't reproduce it in the vagrant VM, only got this:

libbpf: object 'main': failed (-22) to create BPF token from '/sys/fs/bpf', skipping optional step...

The unique detected besides that type is libbpf: map 'tester': failed to create: Invalid argument(-22) in selftest/map-autocreate: https://github.com/aquasecurity/libbpfgo/actions/runs/8570253314/job/23488218928#step:4:1585

What's your testing env?

[mozillazg]

@geyslan we can reproduce it in the ci env:
mozillazg#9

[chentao-kernel]

@geyslan @mozillazg hi, geyslan, i think it is same issue with 211, and i also add test case again.

[chentao-kernel]

@geyslan @mozillazg hi, geyslan, i think it is same cause with #421, and i also add test case for it.

[chentao-kernel]

@mozillazg I couldn't reproduce it in the vagrant VM, only got this:我无法在流浪者虚拟机中重现它，只得到这个：

libbpf: object 'main': failed (-22) to create BPF token from '/sys/fs/bpf', skipping optional step...

The unique detected besides that type is libbpf: map 'tester': failed to create: Invalid argument(-22) in selftest/map-autocreate: https://github.com/aquasecurity/libbpfgo/actions/runs/8570253314/job/23488218928#step:4:1585除该类型外，检测到的唯一值 libbpf: map 'tester': failed to create: Invalid argument(-22) 为 selftest/map-autocreate ： https://github.com/aquasecurity/libbpfgo/actions/runs/8570253314/job/23488218928#step:4:1585

What's your testing env?您的测试环境是什么？

@geyslan, it it not the same issue with #420
it may be caused by the ebpf new feature of token

[chentao-kernel]

@mozillazg I couldn't reproduce it in the vagrant VM, only got this:我无法在流浪者虚拟机中重现它，只得到这个：
libbpf: object 'main': failed (-22) to create BPF token from '/sys/fs/bpf', skipping optional step...
The unique detected besides that type is libbpf: map 'tester': failed to create: Invalid argument(-22) in selftest/map-autocreate: https://github.com/aquasecurity/libbpfgo/actions/runs/8570253314/job/23488218928#step:4:1585除该类型外，检测到的唯一值 libbpf: map 'tester': failed to create: Invalid argument(-22) 为 selftest/map-autocreate ： https://github.com/aquasecurity/libbpfgo/actions/runs/8570253314/job/23488218928#step:4:1585
What's your testing env?您的测试环境是什么？

@geyslan, it it not the same issue with #420 it may be caused by the ebpf new feature of token

It seems that the vm not support ebpf token in kernel, but anyway, the result of test case will not be influenced.

[mozillazg]

Closed via #422