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fix(orch): uffd handle no such process #2352

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fix(orch): uffd handle no such process #2352

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fix(orch): uffd handle no such process
jakubno Apr 10, 2026
9383371
chore: improve comment
jakubno Apr 10, 2026
14431b3
Update packages/orchestrator/pkg/sandbox/uffd/userfaultfd/userfaultfd.go
jakubno Apr 13, 2026
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10 changes: 10 additions & 0 deletions packages/orchestrator/pkg/sandbox/uffd/userfaultfd/userfaultfd.go
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Original file line number Diff line number Diff line change
Expand Up @@ -363,6 +363,16 @@ func (u *Userfaultfd) faultPage(
return nil
}

if errors.Is(copyErr, unix.ESRCH) {
// The faulting thread/process no longer exists — it exited or was killed
// while the page fetch was in flight. This is expected during sandbox
// teardown; treat it as benign.
span.SetAttributes(attribute.Bool("uffd.process_exited", true))
u.logger.Debug(ctx, "UFFD serve copy error: process no longer exists", zap.Error(copyErr))

return nil
}

if copyErr != nil {
var signalErr error
if onFailure != nil {
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