From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: jmorganca <jmorganca@gmail.com>
Date: Thu, 6 Jun 2024 23:55:47 -0700
Subject: [PATCH] ggml-backend: malloc and free using the same compiler

On Windows, the CUDA backend must be compiled with MSVC but generic
portions compiled with CGo use either GCC or Clang. Since
ggml_backend_buffer_t spans these two components, it can be allocated
and freed using different compilers. Specifically, it is malloced by
MSVC and freed by Clang, which can cause problems.

This moves freeing of the buffers into the backends to avoid the
problem.
---
 ggml/src/ggml-backend.cpp            | 9 +++++++--
 ggml/src/ggml-cann/ggml-cann.cpp     | 2 ++
 ggml/src/ggml-cuda/ggml-cuda.cu      | 3 +++
 ggml/src/ggml-metal/ggml-metal.cpp   | 2 ++
 ggml/src/ggml-opencl/ggml-opencl.cpp | 1 +
 ggml/src/ggml-rpc/ggml-rpc.cpp       | 1 +
 ggml/src/ggml-sycl/ggml-sycl.cpp     | 3 +++
 ggml/src/ggml-vulkan/ggml-vulkan.cpp | 2 ++
 8 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/ggml/src/ggml-backend.cpp b/ggml/src/ggml-backend.cpp
index 08681f35e..afde2f0b7 100644
--- a/ggml/src/ggml-backend.cpp
+++ b/ggml/src/ggml-backend.cpp
@@ -113,7 +113,6 @@ void ggml_backend_buffer_free(ggml_backend_buffer_t buffer) {
     if (buffer->iface.free_buffer != NULL) {
         buffer->iface.free_buffer(buffer);
     }
-    delete buffer;
 }
 
 size_t ggml_backend_buffer_get_size(ggml_backend_buffer_t buffer) {
@@ -586,6 +585,7 @@ static void ggml_backend_multi_buffer_free_buffer(ggml_backend_buffer_t buffer)
 
     free(ctx->buffers);
     free(ctx);
+    delete buffer;
 }
 
 static void ggml_backend_multi_buffer_clear(ggml_backend_buffer_t buffer, uint8_t value) {
@@ -2106,6 +2106,11 @@ static void * ggml_backend_cpu_buffer_get_base(ggml_backend_buffer_t buffer) {
 static void ggml_backend_cpu_buffer_free_buffer(ggml_backend_buffer_t buffer) {
     GGML_ASSERT(buffer);
     ggml_aligned_free(buffer->context, buffer->size);
+    delete buffer;
+}
+
+static void ggml_backend_cpu_ptr_buffer_free_buffer(ggml_backend_buffer_t buffer) {
+    delete buffer;
 }
 
 static void ggml_backend_cpu_buffer_memset_tensor(ggml_backend_buffer_t buffer, struct ggml_tensor * tensor, uint8_t value, size_t offset, size_t size) {
@@ -2158,7 +2163,7 @@ static const struct ggml_backend_buffer_i ggml_backend_cpu_buffer_i = {
 };
 
 static const struct ggml_backend_buffer_i ggml_backend_cpu_buffer_from_ptr_i = {
-    /* .free_buffer     = */ NULL, // ptr is not owned by the buffer, so it does not need to be freed
+    /* .free_buffer     = */ ggml_backend_cpu_ptr_buffer_free_buffer, // ptr is not owned by the buffer but need to free the buffer itself
     /* .get_base        = */ ggml_backend_cpu_buffer_get_base,
     /* .init_tensor     = */ NULL, // no initialization required
     /* .memset_tensor   = */ ggml_backend_cpu_buffer_memset_tensor,
diff --git a/ggml/src/ggml-cann/ggml-cann.cpp b/ggml/src/ggml-cann/ggml-cann.cpp
index 81288464c..866758782 100644
--- a/ggml/src/ggml-cann/ggml-cann.cpp
+++ b/ggml/src/ggml-cann/ggml-cann.cpp
@@ -831,6 +831,7 @@ static bool ggml_backend_buffer_is_cann(ggml_backend_buffer_t buffer) {
 static void ggml_backend_cann_buffer_free_buffer(ggml_backend_buffer_t buffer) {
     ggml_backend_cann_buffer_context * ctx = (ggml_backend_cann_buffer_context *) buffer->context;
     delete ctx;
+    delete buffer;
 }
 
 /**
@@ -1570,6 +1571,7 @@ static const char * ggml_backend_cann_host_buffer_name(ggml_backend_buffer_t buf
  */
 static void ggml_backend_cann_host_buffer_free(ggml_backend_buffer_t buffer) {
     ACL_CHECK(aclrtFreeHost(buffer->context));
+    delete buffer;
 }
 
 /**
diff --git a/ggml/src/ggml-cuda/ggml-cuda.cu b/ggml/src/ggml-cuda/ggml-cuda.cu
index 279679a4e..5145c1e88 100644
--- a/ggml/src/ggml-cuda/ggml-cuda.cu
+++ b/ggml/src/ggml-cuda/ggml-cuda.cu
@@ -583,6 +583,7 @@ struct ggml_backend_cuda_buffer_context {
 static void ggml_backend_cuda_buffer_free_buffer(ggml_backend_buffer_t buffer) {
     ggml_backend_cuda_buffer_context * ctx = (ggml_backend_cuda_buffer_context *)buffer->context;
     delete ctx;
+    delete buffer;
 }
 
 static bool ggml_backend_buffer_is_cuda(ggml_backend_buffer_t buffer) {
@@ -838,6 +839,7 @@ struct ggml_backend_cuda_split_buffer_context {
 static void ggml_backend_cuda_split_buffer_free_buffer(ggml_backend_buffer_t buffer) {
     ggml_backend_cuda_split_buffer_context * ctx = (ggml_backend_cuda_split_buffer_context *)buffer->context;
     delete ctx;
+    delete buffer;
 }
 
 static void * ggml_backend_cuda_split_buffer_get_base(ggml_backend_buffer_t buffer) {
@@ -1119,6 +1121,7 @@ static bool ggml_backend_buft_is_cuda_host(ggml_backend_buffer_type_t buft) {
 
 static void ggml_backend_cuda_host_buffer_free_buffer(ggml_backend_buffer_t buffer) {
     CUDA_CHECK(cudaFreeHost(buffer->context));
+    delete buffer;
 }
 
 static void * ggml_cuda_host_malloc(size_t size) {
diff --git a/ggml/src/ggml-metal/ggml-metal.cpp b/ggml/src/ggml-metal/ggml-metal.cpp
index 70bf6f3d9..f2b7fe692 100644
--- a/ggml/src/ggml-metal/ggml-metal.cpp
+++ b/ggml/src/ggml-metal/ggml-metal.cpp
@@ -25,6 +25,7 @@ static void ggml_backend_metal_buffer_shared_free_buffer(ggml_backend_buffer_t b
     GGML_ASSERT(ggml_metal_buffer_is_shared(ctx));
 
     ggml_metal_buffer_free(ctx);
+    delete buffer;
 }
 
 static void * ggml_backend_metal_buffer_shared_get_base(ggml_backend_buffer_t buffer) {
@@ -99,6 +100,7 @@ static void ggml_backend_metal_buffer_private_free_buffer(ggml_backend_buffer_t
     GGML_ASSERT(!ggml_metal_buffer_is_shared(ctx));
 
     ggml_metal_buffer_free(ctx);
+    delete buffer;
 }
 
 static void * ggml_backend_metal_buffer_private_get_base(ggml_backend_buffer_t buffer) {
diff --git a/ggml/src/ggml-opencl/ggml-opencl.cpp b/ggml/src/ggml-opencl/ggml-opencl.cpp
index 0d37587f6..ff373d413 100644
--- a/ggml/src/ggml-opencl/ggml-opencl.cpp
+++ b/ggml/src/ggml-opencl/ggml-opencl.cpp
@@ -3417,6 +3417,7 @@ struct ggml_backend_opencl_buffer_context {
 static void ggml_backend_opencl_buffer_free_buffer(ggml_backend_buffer_t buffer) {
     ggml_backend_opencl_buffer_context * ctx = (ggml_backend_opencl_buffer_context *) buffer->context;
     delete ctx;
+    delete buffer;
 }
 
 static void * ggml_backend_opencl_buffer_get_base(ggml_backend_buffer_t buffer) {
diff --git a/ggml/src/ggml-rpc/ggml-rpc.cpp b/ggml/src/ggml-rpc/ggml-rpc.cpp
index 18a45d2d9..89041805e 100644
--- a/ggml/src/ggml-rpc/ggml-rpc.cpp
+++ b/ggml/src/ggml-rpc/ggml-rpc.cpp
@@ -556,6 +556,7 @@ static void ggml_backend_rpc_buffer_free_buffer(ggml_backend_buffer_t buffer) {
     bool status = send_rpc_cmd(ctx->sock, RPC_CMD_FREE_BUFFER, &request, sizeof(request), nullptr, 0);
     RPC_STATUS_ASSERT(status);
     delete ctx;
+    delete buffer;
 }
 
 static void * ggml_backend_rpc_buffer_get_base(ggml_backend_buffer_t buffer) {
diff --git a/ggml/src/ggml-sycl/ggml-sycl.cpp b/ggml/src/ggml-sycl/ggml-sycl.cpp
index 7449a9160..e69a1ff5f 100644
--- a/ggml/src/ggml-sycl/ggml-sycl.cpp
+++ b/ggml/src/ggml-sycl/ggml-sycl.cpp
@@ -355,6 +355,7 @@ ggml_backend_sycl_buffer_free_buffer(ggml_backend_buffer_t buffer) try {
     ggml_sycl_set_device(ctx->device);
 
     delete ctx;
+    delete buffer;
 }
 catch (sycl::exception const &exc) {
   std::cerr << exc.what() << "Exception caught at file:" << __FILE__
@@ -816,6 +817,7 @@ struct ggml_backend_sycl_split_buffer_context {
 static void ggml_backend_sycl_split_buffer_free_buffer(ggml_backend_buffer_t buffer) {
     ggml_backend_sycl_split_buffer_context * ctx = (ggml_backend_sycl_split_buffer_context *)buffer->context;
     delete ctx;
+    delete buffer;
 }
 
 static void * ggml_backend_sycl_split_buffer_get_base(ggml_backend_buffer_t buffer) {
@@ -1158,6 +1160,7 @@ static const char * ggml_backend_sycl_host_buffer_type_name(ggml_backend_buffer_
 
 static void ggml_backend_sycl_host_buffer_free_buffer(ggml_backend_buffer_t buffer) {
     ggml_sycl_host_free(buffer->context);
+    delete buffer;
 }
 
 static ggml_backend_buffer_t ggml_backend_sycl_host_buffer_type_alloc_buffer(ggml_backend_buffer_type_t buft, size_t size) {
diff --git a/ggml/src/ggml-vulkan/ggml-vulkan.cpp b/ggml/src/ggml-vulkan/ggml-vulkan.cpp
index c6f5809cc..c801d2fd2 100644
--- a/ggml/src/ggml-vulkan/ggml-vulkan.cpp
+++ b/ggml/src/ggml-vulkan/ggml-vulkan.cpp
@@ -12271,6 +12271,7 @@ static void ggml_backend_vk_buffer_free_buffer(ggml_backend_buffer_t buffer) {
     ggml_backend_vk_buffer_context * ctx = (ggml_backend_vk_buffer_context *)buffer->context;
     ggml_vk_destroy_buffer(ctx->dev_buffer);
     delete ctx;
+    delete buffer;
 }
 
 static void * ggml_backend_vk_buffer_get_base(ggml_backend_buffer_t buffer) {
@@ -12414,6 +12415,7 @@ static const char * ggml_backend_vk_host_buffer_name(ggml_backend_buffer_t buffe
 static void ggml_backend_vk_host_buffer_free_buffer(ggml_backend_buffer_t buffer) {
     VK_LOG_MEMORY("ggml_backend_vk_host_buffer_free_buffer()");
     ggml_vk_host_free(vk_instance.devices[0], buffer->context);
+    delete buffer;
 }
 
 static ggml_backend_buffer_t ggml_backend_vk_host_buffer_type_alloc_buffer(ggml_backend_buffer_type_t buft, size_t size) {
