diff --git a/aiter/mla.py b/aiter/mla.py
index 32fe8aed36..2be2a228aa 100644
--- a/aiter/mla.py
+++ b/aiter/mla.py
@@ -233,6 +233,12 @@ def mla_decode_fwd(
                 and (
                     q.dtype == dtypes.fp8
                     or (q.dtype == dtypes.bf16 and max_seqlen_q == 4)
+                    or (
+                        q.dtype == dtypes.bf16
+                        and kv_buffer.dtype == dtypes.bf16
+                        and nhead == 32
+                        and max_seqlen_q == 1
+                    )
                 )
             )
             else torch.empty(
@@ -275,7 +281,14 @@ def mla_decode_fwd(
         )
 
         if num_kv_splits == 1 and (
-            q.dtype == dtypes.fp8 or (q.dtype == dtypes.bf16 and max_seqlen_q == 4)
+            q.dtype == dtypes.fp8
+            or (q.dtype == dtypes.bf16 and max_seqlen_q == 4)
+            or (
+                q.dtype == dtypes.bf16
+                and kv_buffer.dtype == dtypes.bf16
+                and nhead == 32
+                and max_seqlen_q == 1
+            )
         ):
             lse = final_lse if return_lse else attn_lse
             return logits.view(total_s, nhead, v_head_dim), lse
diff --git a/csrc/py_itfs_cu/asm_mla.cu b/csrc/py_itfs_cu/asm_mla.cu
index 622bdbc65e..56d31357f2 100644
--- a/csrc/py_itfs_cu/asm_mla.cu
+++ b/csrc/py_itfs_cu/asm_mla.cu
@@ -185,8 +185,13 @@ void mla_decode_stage1_asm_fwd(
     }
     else
     {
-        args.out_16_nosplit = 0;
-        args.ptr_RP = nullptr;
+        // The legacy QH16 m32x1_n16x1 kernel (gqa_ratio=32, decode qseqlen=1)
+        // writes directly to output via ptr_RP when kv_split==1.  Passing
+        // nullptr causes GPU memory faults on gfx950.  Other non-persistent
+        // kernels (v3, stage1) use split-reduce and expect ptr_RP = nullptr.
+        bool legacy_qh16 = (gqa_ratio == 32 && max_seqlen_q == 1);
+        args.out_16_nosplit = legacy_qh16 ? kv_split : 0;
+        args.ptr_RP = legacy_qh16 ? output->data_ptr() : nullptr;
         args.ptr_STP = num_kv_splits_indptr->data_ptr();
     }