diff --git a/gfx/layers/DMABUFSurfaceImage.cpp b/gfx/layers/DMABUFSurfaceImage.cpp
--- a/gfx/layers/DMABUFSurfaceImage.cpp
+++ b/gfx/layers/DMABUFSurfaceImage.cpp
@@ -39,20 +39,20 @@
 
 StaticRefPtr<GLContext> sSnapshotContext;
 static StaticMutex sSnapshotContextMutex MOZ_UNANNOTATED;
 
 already_AddRefed<gfx::SourceSurface> DMABUFSurfaceImage::GetAsSourceSurface() {
+  StaticMutexAutoLock lock(sSnapshotContextMutex);
   if (!sSnapshotContext) {
     nsCString discardFailureId;
     sSnapshotContext = GLContextProvider::CreateHeadless({}, &discardFailureId);
     if (!sSnapshotContext) {
       gfxCriticalError() << "Failed to create snapshot GLContext.";
       return nullptr;
     }
   }
 
-  StaticMutexAutoLock lock(sSnapshotContextMutex);
   sSnapshotContext->MakeCurrent();
 
   auto releaseTextures =
       mozilla::MakeScopeExit([&] { mSurface->ReleaseTextures(); });
 
diff --git a/widget/gtk/DMABufSurface.cpp b/widget/gtk/DMABufSurface.cpp
--- a/widget/gtk/DMABufSurface.cpp
+++ b/widget/gtk/DMABufSurface.cpp
@@ -53,24 +53,13 @@
 using namespace mozilla::layers;
 
 #define BUFFER_FLAGS 0
 
 static RefPtr<GLContext> sSnapshotContext;
+static StaticMutex sSnapshotContextMutex MOZ_UNANNOTATED;
 static Atomic<int> gNewSurfaceUID(1);
 
-bool EnsureSnapshotGLContext() {
-  if (!sSnapshotContext) {
-    nsCString discardFailureId;
-    sSnapshotContext = GLContextProvider::CreateHeadless({}, &discardFailureId);
-    if (!sSnapshotContext) {
-      NS_WARNING("Failed to create snapshot GLContext");
-      return false;
-    }
-  }
-  return true;
-}
-
 bool DMABufSurface::IsGlobalRefSet() const {
   if (!mGlobalRefCountFd) {
     return false;
   }
   struct pollfd pfd;
@@ -1263,13 +1252,18 @@
 }
 
 bool DMABufSurfaceYUV::VerifyTextureCreation() {
   LOGDMABUF(("DMABufSurfaceYUV::VerifyTextureCreation() UID %d", mUID));
 
-  if (!EnsureSnapshotGLContext()) {
-    LOGDMABUF(("  failed to create GL context!"));
-    return false;
+  StaticMutexAutoLock lock(sSnapshotContextMutex);
+  if (!sSnapshotContext) {
+    nsCString discardFailureId;
+    sSnapshotContext = GLContextProvider::CreateHeadless({}, &discardFailureId);
+    if (!sSnapshotContext) {
+      NS_WARNING("Failed to create snapshot GLContext");
+      return false;
+    }
   }
 
   auto release = MakeScopeExit([&] { ReleaseEGLImages(sSnapshotContext); });
 
   for (int i = 0; i < mBufferPlaneCount; i++) {