From fb89e0fe2dc4246c86ad0eb0fa2b7cb2f8ba9728 Mon Sep 17 00:00:00 2001 From: Qiang Ma Date: Thu, 11 Jun 2026 20:46:43 +0800 Subject: [PATCH] LoongArch: KVM: Check the return values for put_user() put_user() may return -EFAULT, so, when the user space address is invalid, the caller should return -EFAULT. Cc: stable@vger.kernel.org Reviewed-by: Bibo Mao Signed-off-by: Qiang Ma Signed-off-by: Huacai Chen --- arch/loongarch/kvm/vcpu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/loongarch/kvm/vcpu.c b/arch/loongarch/kvm/vcpu.c index 33aefd90d228..20c207d80e31 100644 --- a/arch/loongarch/kvm/vcpu.c +++ b/arch/loongarch/kvm/vcpu.c @@ -1106,7 +1106,8 @@ static int kvm_loongarch_cpucfg_get_attr(struct kvm_vcpu *vcpu, return -ENXIO; } - put_user(val, uaddr); + if (put_user(val, uaddr)) + return -EFAULT; return ret; }