From 4b25b5ed9a0437cf2de9d46995f4d2d875cf3dd5 Mon Sep 17 00:00:00 2001
From: heyuanjie87 <943313837@qq.com>
Date: Tue, 18 Feb 2025 14:33:56 +0800
Subject: [PATCH] =?UTF-8?q?[lwp]=E6=A3=80=E6=9F=A5killpg=E7=9A=84signo?=
 =?UTF-8?q?=E5=8F=82=E6=95=B0=E7=9A=84=E6=9C=89=E6=95=88=E6=80=A7=20(#9981?=
 =?UTF-8?q?)?=
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* [lwp]对检查killpg的signo参数的有效性
---
 components/lwp/lwp_signal.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/components/lwp/lwp_signal.c b/components/lwp/lwp_signal.c
index 0bbb98c5d2..8c88e68151 100644
--- a/components/lwp/lwp_signal.c
+++ b/components/lwp/lwp_signal.c
@@ -27,6 +27,11 @@
 #include "sys/signal.h"
 #include "syscall_generic.h"
 
+rt_inline rt_err_t valid_signo_check(unsigned long sig)
+{
+    return sig <= _LWP_NSIG ? 0 : -RT_EINVAL;
+}
+
 static lwp_siginfo_t siginfo_create(rt_thread_t current, int signo, int code, lwp_siginfo_ext_t ext)
 {
     lwp_siginfo_t siginfo;
@@ -1432,7 +1437,8 @@ rt_err_t lwp_pgrp_signal_kill(rt_processgroup_t pgrp, long signo, long code,
 
     PGRP_ASSERT_LOCKED(pgrp);
 
-    if (pgrp)
+    rc = valid_signo_check(signo);
+    if (pgrp && !rc)
     {
         rt_list_for_each_entry(lwp, &pgrp->process, pgrp_node)
         {