diff --git a/pkg/signal/trap.go b/pkg/signal/trap.go index 80b5e871f3..2cf5ccf0d2 100644 --- a/pkg/signal/trap.go +++ b/pkg/signal/trap.go @@ -57,8 +57,17 @@ func Trap(cleanup func()) { // DumpStacks dumps the runtime stack. func DumpStacks() { - buf := make([]byte, 16384) - buf = buf[:runtime.Stack(buf, true)] + var ( + buf []byte + stackSize int + ) + bufferLen := 16384 + for stackSize == len(buf) { + buf = make([]byte, bufferLen) + stackSize = runtime.Stack(buf, true) + bufferLen *= 2 + } + buf = buf[:stackSize] // Note that if the daemon is started with a less-verbose log-level than "info" (the default), the goroutine // traces won't show up in the log. logrus.Infof("=== BEGIN goroutine stack dump ===\n%s\n=== END goroutine stack dump ===", buf)