runtime: add a lock partial order edge (assistQueue -> mspanSpecial)

From interesting stack trace from GC assist through memory profiling to addspecial(). Fixes #39022 Change-Id: Ia0506b820fe29ae91490b61c4e9c2fffcad9f7d6 Reviewed-on: https://go-review.googlesource.com/c/go/+/233599 Run-TryBot: Dan Scales <[email protected]> TryBot-Result: Gobot Gobot <[email protected]> Reviewed-by: Austin Clements <[email protected]>
golang · May 14, 2020 · f474e9e · f474e9e
1 parent 5c802c1
commit f474e9e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/runtime/lockrank.go b/src/runtime/lockrank.go
@@ -214,7 +214,7 @@ var lockPartialOrder [][]lockRank = [][]lockRank{
 	lockRankNotifyList:    {},
 	lockRankTraceBuf:      {lockRankScavenge},
 	lockRankTraceStrings:  {lockRankTraceBuf},
-	lockRankMspanSpecial:  {lockRankScavenge, lockRankCpuprof, lockRankSched, lockRankAllg, lockRankAllp, lockRankTimers, lockRankItab, lockRankReflectOffs, lockRankHchan, lockRankNotifyList, lockRankTraceBuf, lockRankTraceStrings},
+	lockRankMspanSpecial:  {lockRankScavenge, lockRankAssistQueue, lockRankCpuprof, lockRankSched, lockRankAllg, lockRankAllp, lockRankTimers, lockRankItab, lockRankReflectOffs, lockRankHchan, lockRankNotifyList, lockRankTraceBuf, lockRankTraceStrings},
 	lockRankProf:          {lockRankScavenge, lockRankAssistQueue, lockRankCpuprof, lockRankSweep, lockRankSched, lockRankAllg, lockRankAllp, lockRankTimers, lockRankItab, lockRankReflectOffs, lockRankNotifyList, lockRankTraceBuf, lockRankTraceStrings, lockRankHchan},
 	lockRankGcBitsArenas:  {lockRankScavenge, lockRankAssistQueue, lockRankCpuprof, lockRankSched, lockRankAllg, lockRankTimers, lockRankItab, lockRankReflectOffs, lockRankNotifyList, lockRankTraceBuf, lockRankTraceStrings, lockRankHchan},
 	lockRankRoot:          {},