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LoongArch: KVM: Check the return values for put_user()

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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 <maobibo@loongson.cn>
Signed-off-by: Qiang Ma <maqianga@uniontech.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
This commit is contained in:
Qiang Ma 2026-06-11 20:46:43 +08:00 committed by Huacai Chen
parent 83551ccedf
commit fb89e0fe2d
1 changed files with 2 additions and 1 deletions
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3
arch/loongarch/kvm/vcpu.c
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@ -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;
}