[PATCH] amdkfd: initialize svm lists at where they are defined

[Zhu Lingshan <lingshan.zhu@amd.com>]

This commit initialized svm lists at where they are
defined. This is defensive programing for security
and consistency.

Initalizing variables ensures that their states are
always valid, avoiding issues caused by
uninitialized variables that could lead to
unpredictable behaviros.

And we should not assume the callee would always
initialize them

Signed-off-by: Zhu Lingshan <lingshan.zhu@amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
index bd3e20d981e0..cbc997449379 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
@@ -2130,11 +2130,7 @@ svm_range_add(struct kfd_process *p, uint64_t start, uint64_t size,
 
 	pr_debug("svms 0x%p [0x%llx 0x%lx]\n", &p->svms, start, last);
 
-	INIT_LIST_HEAD(update_list);
-	INIT_LIST_HEAD(insert_list);
-	INIT_LIST_HEAD(remove_list);
 	INIT_LIST_HEAD(&new_list);
-	INIT_LIST_HEAD(remap_list);
 
 	node = interval_tree_iter_first(&svms->objects, start, last);
 	while (node) {
@@ -3635,6 +3631,11 @@ svm_range_set_attr(struct kfd_process *p, struct mm_struct *mm,
 	if (r)
 		return r;
 
+	INIT_LIST_HEAD(&update_list);
+	INIT_LIST_HEAD(&insert_list);
+	INIT_LIST_HEAD(&remove_list);
+	INIT_LIST_HEAD(&remap_list);
+
 	svms = &p->svms;
 
 	mutex_lock(&process_info->lock);
-- 
2.47.1