From: tyronecai <redacted>
Date: Wed, 8 Jul 2026 05:00:05 +0000 (+0800)
Subject: ggml : fix A indexing in simd_gemm scalar tail-column path (#25390)
X-Git-Tag: upstream/0.0.10438~522
X-Git-Url: https://git.djapps.eu/?a=commitdiff_plain;h=57b50e1f6b50e01eb14c43fc1253602af74c1870;p=pkg%2Fggml%2Fsources%2Fllama.cpp

ggml : fix A indexing in simd_gemm scalar tail-column path (#25390)

`simd_gemm()` has an incorrect A-matrix index in the scalar tail-column path for full row blocks.
---

diff --git a/ggml/src/ggml-cpu/simd-gemm.h b/ggml/src/ggml-cpu/simd-gemm.h
index 4119d04f8..2ebd10051 100644
--- a/ggml/src/ggml-cpu/simd-gemm.h
+++ b/ggml/src/ggml-cpu/simd-gemm.h
@@ -78,7 +78,7 @@ static void simd_gemm(
             for (int64_t i = 0; i < GEMM_RM; i++) {
                 float a = C[i * N + jj];
                 for (int64_t kk = 0; kk < K; kk++) {
-                    a += A[i + kk] * B[kk * N + jj];
+                    a += A[i * K + kk] * B[kk * N + jj];
                 }
                 C[i * N + jj] = a;
             }