go runtime_error ai_generated true

fatal error: all goroutines are asleep - deadlock!

ID: go/fatal-error-all-goroutines-asleep-deadlock

Also available as: JSON · Markdown · 中文
80%Fix Rate
90%Confidence
0Evidence
2024-01-15First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
1.0+ active — — —

Root Cause

All goroutines are blocked waiting on channels/locks with no possibility of progress; the Go runtime deadlock detector fires.

generic

中文

所有 goroutine 都阻塞在 channel 或锁上，无法继续推进，Go 运行时死锁检测器触发。

Workarounds

  1. 95% success 
    ch := make(chan int, 1)
ch <- 1 // no receiver needed for buffered channel
  2. 90% success 
    select {
case v := <-ch:
    _ = v
case <-time.After(time.Second):
    return errors.New("timeout")
}

Dead Ends

Common approaches that don't work:

  1. 90% fail

    Sleep does not unblock the sender; the deadlock detector still fires once all goroutines park.

  2. 95% fail

    fatal error from the runtime is not recoverable via recover(); it calls exit directly.