From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file

---
 kernel/arch/arm64/kvm/psci.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/kernel/arch/arm64/kvm/psci.c b/kernel/arch/arm64/kvm/psci.c
index 20ba513..32bb26b 100644
--- a/kernel/arch/arm64/kvm/psci.c
+++ b/kernel/arch/arm64/kvm/psci.c
@@ -499,6 +499,8 @@
 	u64 val;
 	int wa_level;
 
+	if (KVM_REG_SIZE(reg->id) != sizeof(val))
+		return -ENOENT;
 	if (copy_from_user(&val, uaddr, KVM_REG_SIZE(reg->id)))
 		return -EFAULT;
 

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