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| author | Damien Neil <dneil@google.com> | 2025-08-26 13:26:57 -0700 |
|---|---|---|
| committer | Michael Knyszek <mknyszek@google.com> | 2025-09-09 14:46:30 -0700 |
| commit | 5dcedd65504cc9cadc9a5ea8bc3af51a26eec704 (patch) | |
| tree | 125db295480b4fa8173f307b2008739998b84259 /src/runtime | |
| parent | d3be949ada01d7827f8edc87665fef5268634cb3 (diff) | |
| download | go-5dcedd65504cc9cadc9a5ea8bc3af51a26eec704.tar.xz | |
runtime: lock mheap_.speciallock when allocating synctest specials
Avoid racing use of mheap_.specialBubbleAlloc.
Fixes #75134
Change-Id: I0c9140c18d2bca1e1c3387cd81230f0e8c9ac23e
Reviewed-on: https://go-review.googlesource.com/c/go/+/699255
Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Diffstat (limited to 'src/runtime')
| -rw-r--r-- | src/runtime/synctest.go | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/runtime/synctest.go b/src/runtime/synctest.go index 16af1209b4..529f69fd93 100644 --- a/src/runtime/synctest.go +++ b/src/runtime/synctest.go @@ -410,7 +410,9 @@ func getOrSetBubbleSpecial(p unsafe.Pointer, bubbleid uint64, add bool) (assoc i } else if add { // p is not associated with a bubble, // and we've been asked to add an association. + lock(&mheap_.speciallock) s := (*specialBubble)(mheap_.specialBubbleAlloc.alloc()) + unlock(&mheap_.speciallock) s.bubbleid = bubbleid s.special.kind = _KindSpecialBubble s.special.offset = offset |