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[PATCH 1/1] kvm: Clear variables which may not be used
From: |
Li Zhang |
Subject: |
[PATCH 1/1] kvm: Clear variables which may not be used |
Date: |
Mon, 6 Dec 2021 12:27:38 +0100 |
The variables msi, route in kvm_irqchip_send_msi may be uninitialised
values in some cases. It's necessary to clear them.
Signed-off-by: Li Zhang <lizhang@suse.de>
---
accel/kvm/kvm-all.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
index eecd8031cf..bd50dc6b80 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -1913,10 +1913,8 @@ static KVMMSIRoute *kvm_lookup_msi_route(KVMState *s,
MSIMessage msg)
int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg)
{
- struct kvm_msi msi;
- KVMMSIRoute *route;
-
if (kvm_direct_msi_allowed) {
+ struct kvm_msi msi;
msi.address_lo = (uint32_t)msg.address;
msi.address_hi = msg.address >> 32;
msi.data = le32_to_cpu(msg.data);
@@ -1926,6 +1924,7 @@ int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg)
return kvm_vm_ioctl(s, KVM_SIGNAL_MSI, &msi);
}
+ KVMMSIRoute *route;
route = kvm_lookup_msi_route(s, msg);
if (!route) {
int virq;
--
2.31.1
- [PATCH 1/1] kvm: Clear variables which may not be used,
Li Zhang <=