From 42f3411337b764cd134269fbf2fbdfe43c63a647 Mon Sep 17 00:00:00 2001
From: Marsman1996 <lqliuyuwei@outlook.com>
Date: Wed, 4 Sep 2024 15:34:56 +0800
Subject: [PATCH] Fix index out of bound when `key` of `semget` too large

---
 kernel/src/ipc/semaphore/system_v/sem_set.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/kernel/src/ipc/semaphore/system_v/sem_set.rs b/kernel/src/ipc/semaphore/system_v/sem_set.rs
index 3a6859611..fdbc4dfb4 100644
--- a/kernel/src/ipc/semaphore/system_v/sem_set.rs
+++ b/kernel/src/ipc/semaphore/system_v/sem_set.rs
@@ -235,6 +235,9 @@ pub fn create_sem_set_with_id(
 ) -> Result<()> {
     debug_assert!(nsems <= SEMMSL);
     debug_assert!(id > 0);
+    if id as usize > SEMMNI {
+        return_errno_with_message!(Errno::ENOENT, "id larger than SEMMNI");
+    }
 
     ID_ALLOCATOR
         .get()