[PATCH] drm/amdgpu: Avoid use-after-free

[Tom St Denis]

Switch to _SAFE variant of list macro to avoid use-after-free bug.

Signed-off-by: Tom St Denis <tom.stdenis at amd.com>
---
 amdgpu/amdgpu_cs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/amdgpu/amdgpu_cs.c b/amdgpu/amdgpu_cs.c
index fb5b3a8c4bc4..cd92a0957293 100644
--- a/amdgpu/amdgpu_cs.c
+++ b/amdgpu/amdgpu_cs.c
@@ -124,8 +124,8 @@ int amdgpu_cs_ctx_free(amdgpu_context_handle context)
 	for (i = 0; i < AMDGPU_HW_IP_NUM; i++) {
 		for (j = 0; j < AMDGPU_HW_IP_INSTANCE_MAX_COUNT; j++) {
 			for (k = 0; k < AMDGPU_CS_MAX_RINGS; k++) {
-				amdgpu_semaphore_handle sem;
-				LIST_FOR_EACH_ENTRY(sem, &context->sem_list[i][j][k], list) {
+				amdgpu_semaphore_handle sem, tmp;
+				LIST_FOR_EACH_ENTRY_SAFE(sem, tmp, &context->sem_list[i][j][k], list) {
 					list_del(&sem->list);
 					amdgpu_cs_reset_sem(sem);
 					amdgpu_cs_unreference_sem(sem);
-- 
2.10.0