From e38a5e52d2fb43ced7198e04f286886a8aa5c798 Mon Sep 17 00:00:00 2001
From: weishu <twsxtd@gmail.com>
Date: Thu, 21 Mar 2024 14:15:11 +0800
Subject: [PATCH] kernel: we should take ownership over fd

---
 kernel/ksud.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/kernel/ksud.c b/kernel/ksud.c
index b817e9d3..08ab1575 100644
--- a/kernel/ksud.c
+++ b/kernel/ksud.c
@@ -388,11 +388,13 @@ int ksu_handle_vfs_read(struct file **file_ptr, char __user **buf_ptr,
 
 int ksu_handle_sys_read(unsigned int fd, char __user **buf_ptr, size_t *count_ptr)
 {
-	struct file *file = fget_raw(fd);
+	struct file *file = fget(fd);
 	if (!file) {
 		return 0;
 	}
-	return ksu_handle_vfs_read(&file, buf_ptr, count_ptr, NULL);
+	int result = ksu_handle_vfs_read(&file, buf_ptr, count_ptr, NULL);
+	fput(file);
+	return result;
 }
 
 static unsigned int volumedown_pressed_count = 0;