From 33c718db1fbfe834f30eef28cf206f98736fe612 Mon Sep 17 00:00:00 2001
From: Matt Corallo <649246+TheBlueMatt@users.noreply.github.com>
Date: Fri, 29 May 2026 03:30:24 +0000
Subject: [PATCH] meta : Add missing `buffer` set in allreduce fallback
 !COMPUTE clear (#23480)

Without this at least the vulkan backend will skip the `* 0` for
!COMPUTE tensors, causing corrupt output.
---
 ggml/src/ggml-backend-meta.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ggml/src/ggml-backend-meta.cpp b/ggml/src/ggml-backend-meta.cpp
index d0d64523b..48b2027fa 100644
--- a/ggml/src/ggml-backend-meta.cpp
+++ b/ggml/src/ggml-backend-meta.cpp
@@ -2076,6 +2076,7 @@ static enum ggml_status ggml_backend_meta_graph_compute(ggml_backend_t backend,
             node_zero->src[0] = node;
             ggml_set_op_params_f32(node_zero, 0, 0.0f);
             node_zero->data = node->data;
+            node_zero->buffer = node->buffer;
             node_zero->flags |= GGML_TENSOR_FLAG_COMPUTE;
 
             step_cgraphs[j] = get_cgraph_aux();