From: Bibo Mao <maobibo@loongson.cn>
To: Huacai Chen <chenhuacai@kernel.org>
Cc: kernel@xen0n.name, kvm@vger.kernel.org,
loongarch@lists.linux.dev, linux-kernel@vger.kernel.org,
stable@vger.kernel.org
Subject: [PATCH v3 1/6] LoongArch: KVM: Check irq validility in kvm_vcpu_ioctl_interrupt()
Date: Tue, 19 May 2026 17:43:03 +0800 [thread overview]
Message-ID: <20260519094308.3983046-2-maobibo@loongson.cn> (raw)
In-Reply-To: <20260519094308.3983046-1-maobibo@loongson.cn>
Function kvm_vcpu_ioctl_interrupt() can be called from userspace, here
add irq validility cheking in kvm_vcpu_ioctl_interrupt().
Fixes: f45ad5b8aa93 ("LoongArch: KVM: Implement vcpu interrupt operations")
Cc: stable@vger.kernel.org
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
---
arch/loongarch/kvm/vcpu.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/arch/loongarch/kvm/vcpu.c b/arch/loongarch/kvm/vcpu.c
index e28084c49e68..673977a25138 100644
--- a/arch/loongarch/kvm/vcpu.c
+++ b/arch/loongarch/kvm/vcpu.c
@@ -1486,7 +1486,14 @@ void kvm_lose_fpu(struct kvm_vcpu *vcpu)
int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq)
{
- int intr = (int)irq->irq;
+ int vector, intr = (int)irq->irq;
+
+ vector = intr;
+ if (intr < 0)
+ vector = -intr;
+
+ if (vector >= EXCCODE_INT_NUM)
+ return -EINVAL;
if (intr > 0)
kvm_queue_irq(vcpu, intr);
--
2.39.3
next prev parent reply other threads:[~2026-05-19 9:43 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-19 9:43 [PATCH v3 0/6] LoongArch: KVM: Small enhancement about interrupt injection Bibo Mao
2026-05-19 9:43 ` Bibo Mao [this message]
2026-05-19 12:57 ` [PATCH v3 1/6] LoongArch: KVM: Check irq validility in kvm_vcpu_ioctl_interrupt() Bibo Mao
2026-05-19 9:43 ` [PATCH v3 2/6] LoongArch: KVM: Check msgint feature in interrupt post Bibo Mao
2026-05-19 9:43 ` [PATCH v3 3/6] LoongArch: KVM: Use existing macro about interrupt bit mask Bibo Mao
2026-05-19 9:43 ` [PATCH v3 4/6] LoongArch: KVM: Inject interrupt with batch method Bibo Mao
2026-05-19 9:43 ` [PATCH v3 5/6] LoongArch: KVM: Add valid bit check when set ESTAT CSR register Bibo Mao
2026-05-19 9:43 ` [PATCH v3 6/6] LoongArch: KVM: Simple interrupt status acquire interface Bibo Mao
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