From: Johannes Gäßler <redacted>
Date: Mon, 2 Feb 2026 09:00:05 +0000 (+0100)
Subject: ggml-backend: fix async set/get fallback sync (llama/19179)
X-Git-Tag: upstream/1.8.3+155~71
X-Git-Url: https://git.djapps.eu/?a=commitdiff_plain;h=625c8d863e1444874aef4e5fb17d86fd1feafec3;p=pkg%2Fggml%2Fsources%2Fwhisper.cpp

ggml-backend: fix async set/get fallback sync (llama/19179)
---

diff --git a/ggml/src/ggml-backend.cpp b/ggml/src/ggml-backend.cpp
index 35487657..22c65699 100644
--- a/ggml/src/ggml-backend.cpp
+++ b/ggml/src/ggml-backend.cpp
@@ -258,6 +258,7 @@ void ggml_backend_tensor_set_async(ggml_backend_t backend, struct ggml_tensor *
     GGML_ASSERT(offset + size <= ggml_nbytes(tensor) && "tensor write out of bounds");
 
     if (backend->iface.set_tensor_async == NULL) {
+        ggml_backend_synchronize(backend);
         ggml_backend_tensor_set(tensor, data, offset, size);
     } else {
         backend->iface.set_tensor_async(backend, tensor, data, offset, size);
@@ -271,6 +272,7 @@ void ggml_backend_tensor_get_async(ggml_backend_t backend, const struct ggml_ten
     GGML_ASSERT(offset + size <= ggml_nbytes(tensor) && "tensor read out of bounds");
 
     if (backend->iface.get_tensor_async == NULL) {
+        ggml_backend_synchronize(backend);
         ggml_backend_tensor_get(tensor, data, offset, size);
     } else {
         backend->iface.get_tensor_async(backend, tensor, data, offset, size);