From: jsg <jsg@openbsd.org>
Date: Fri, 13 Jan 2023 01:38:35 +0000 (+0000)
Subject: drm/amdkfd: Fix kfd_process_device_init_vm error handling
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=ec0ca080f8ccd416abff176a9575b43c087dccb6;p=openbsd

drm/amdkfd: Fix kfd_process_device_init_vm error handling

From Philip Yang
9d74d1f52e16d8e07f7fbe52e96d6391418a2fe9 in linux-6.1.y/6.1.5
29d48b87db64b6697ddad007548e51d032081c59 in mainline linux
---

diff --git a/sys/dev/pci/drm/amd/amdkfd/kfd_process.c b/sys/dev/pci/drm/amd/amdkfd/kfd_process.c
index 951b6367724..9821fa9268d 100644
--- a/sys/dev/pci/drm/amd/amdkfd/kfd_process.c
+++ b/sys/dev/pci/drm/amd/amdkfd/kfd_process.c
@@ -689,13 +689,13 @@ void kfd_process_destroy_wq(void)
 }
 
 static void kfd_process_free_gpuvm(struct kgd_mem *mem,
-			struct kfd_process_device *pdd, void *kptr)
+			struct kfd_process_device *pdd, void **kptr)
 {
 	struct kfd_dev *dev = pdd->dev;
 
-	if (kptr) {
+	if (kptr && *kptr) {
 		amdgpu_amdkfd_gpuvm_unmap_gtt_bo_from_kernel(mem);
-		kptr = NULL;
+		*kptr = NULL;
 	}
 
 	amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu(dev->adev, mem, pdd->drm_priv);
@@ -795,7 +795,7 @@ static void kfd_process_device_destroy_ib_mem(struct kfd_process_device *pdd)
 	if (!qpd->ib_kaddr || !qpd->ib_base)
 		return;
 
-	kfd_process_free_gpuvm(qpd->ib_mem, pdd, qpd->ib_kaddr);
+	kfd_process_free_gpuvm(qpd->ib_mem, pdd, &qpd->ib_kaddr);
 }
 
 struct kfd_process *kfd_create_process(struct file *filep)
@@ -1277,7 +1277,7 @@ static void kfd_process_device_destroy_cwsr_dgpu(struct kfd_process_device *pdd)
 	if (!dev->cwsr_enabled || !qpd->cwsr_kaddr || !qpd->cwsr_base)
 		return;
 
-	kfd_process_free_gpuvm(qpd->cwsr_mem, pdd, qpd->cwsr_kaddr);
+	kfd_process_free_gpuvm(qpd->cwsr_mem, pdd, &qpd->cwsr_kaddr);
 }
 
 void kfd_process_set_trap_handler(struct qcm_process_device *qpd,
@@ -1598,8 +1598,8 @@ int kfd_process_device_init_vm(struct kfd_process_device *pdd,
 	return 0;
 
 err_init_cwsr:
+	kfd_process_device_destroy_ib_mem(pdd);
 err_reserve_ib_mem:
-	kfd_process_device_free_bos(pdd);
 	pdd->drm_priv = NULL;
 
 	return ret;