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tetragon: Skip loading of override prog for kprobe multi object #1273

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tetragon: Skip loading of override prog for kprobe multi object #1273

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14 changes: 14 additions & 0 deletions pkg/sensors/program/loader.go
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Original file line number Diff line number Diff line change
Expand Up @@ -276,6 +276,19 @@ func LSMAttach() AttachFunc {
}
}

func MultiKprobeOpen(load *Program) OpenFunc {
return func(coll *ebpf.CollectionSpec) error {
// Disable loading of override program if it's not needed
if !load.Override {
progOverrideSpec, ok := coll.Programs["generic_kprobe_override"]
if ok {
progOverrideSpec.Type = ebpf.UnspecifiedProgram
}
}
return nil
}
}

func MultiKprobeAttach(load *Program) AttachFunc {
return func(coll *ebpf.Collection, collSpec *ebpf.CollectionSpec,
prog *ebpf.Program, spec *ebpf.ProgramSpec) (unloader.Unloader, error) {
Expand Down Expand Up @@ -367,6 +380,7 @@ func LoadUprobeProgram(bpfDir, mapDir string, load *Program, verbose int) error
func LoadMultiKprobeProgram(bpfDir, mapDir string, load *Program, verbose int) error {
opts := &loadOpts{
attach: MultiKprobeAttach(load),
open: MultiKprobeOpen(load),
ci: &customInstall{fmt.Sprintf("%s-kp_calls", load.PinPath), "kprobe"},
}
return loadProgram(bpfDir, []string{mapDir}, load, opts, verbose)
Expand Down
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