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| author | Qiang Ma <maqianga@uniontech.com> | 2026-06-11 15:46:43 +0300 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2026-06-11 15:46:43 +0300 |
| commit | fb89e0fe2dc4246c86ad0eb0fa2b7cb2f8ba9728 (patch) | |
| tree | 19758ed14fc2e6854d5ea7854c3eacc4b4e64fc0 | |
| parent | 83551ccedffda28b1fa7aeb8fcf5e00489443816 (diff) | |
| download | linux-fb89e0fe2dc4246c86ad0eb0fa2b7cb2f8ba9728.tar.xz | |
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 <maobibo@loongson.cn>
Signed-off-by: Qiang Ma <maqianga@uniontech.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
| -rw-r--r-- | arch/loongarch/kvm/vcpu.c | 3 |
1 files changed, 2 insertions, 1 deletions
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; } |