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runtime: add race detector tips to reportZombies func

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We can find a few issues finally turned out to be a race condition,
such as #47513. I believe such a tip can eliminate the need for developers
to file this kind of issue in the first place.

Change-Id: I1597fa09fde641882e8e87453470941747705272
GitHub-Last-Rev: 9f136f5b3b
GitHub-Pull-Request: golang/go#70331
Reviewed-on: https://go-review.googlesource.com/c/go/+/627816
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Jorropo <jorropo.pgm@gmail.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
This commit is contained in:
Lin Lin 2024-11-15 12:08:29 +00:00 committed by Gopher Robot
parent a9afea969a
commit 09f9b5e361
1 changed files with 1 additions and 1 deletions
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2
src/runtime/mgcsweep.go
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@ -855,7 +855,7 @@ func (sl *sweepLocked) sweep(preserve bool) bool {
// pointer to that object and marked it.
func (s *mspan) reportZombies() {
printlock()
print("runtime: marked free object in span ", s, ", elemsize=", s.elemsize, " freeindex=", s.freeindex, " (bad use of unsafe.Pointer? try -d=checkptr)\n")
print("runtime: marked free object in span ", s, ", elemsize=", s.elemsize, " freeindex=", s.freeindex, " (bad use of unsafe.Pointer or having race conditions? try -d=checkptr or -race)\n")
mbits := s.markBitsForBase()
abits := s.allocBitsForIndex(0)
for i := uintptr(0); i < uintptr(s.nelems); i++ {