From a8ce34c0c661683fe33ef79be2b5b6819d4adfde Mon Sep 17 00:00:00 2001
From: jinlun <jinlun@huawei.com>
Date: Mon, 17 Jun 2024 14:54:40 +0800
Subject: [PATCH 02/14] Fix NULL pointer reference when kill child processes

---
 .../tasks/dim_core_measure_process/dim_core_measure_process.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/core/tasks/dim_core_measure_process/dim_core_measure_process.c b/src/core/tasks/dim_core_measure_process/dim_core_measure_process.c
index e5e262a..c1efa02 100644
--- a/src/core/tasks/dim_core_measure_process/dim_core_measure_process.c
+++ b/src/core/tasks/dim_core_measure_process/dim_core_measure_process.c
@@ -89,8 +89,8 @@ static int kill_task_tree(struct task_struct *tsk)
 		return -ENOMEM;
 
 	dim_core_kernel_symbol.walk_process_tree(tsk, store_task_tree, &ctx);
-	if (ctx.len != 0) {
-		for (i = ctx.len; i >= 0; i--) {
+	if (ctx.len > 0) {
+		for (i = ctx.len - 1; i >= 0; i--) {
 			send_sig(SIGKILL, ctx.buf[i], 1);
 			put_task_struct(ctx.buf[i]);
 		}
-- 
2.33.0