We need to ensure ret < 0 when going through the error path, or QEMU may
try to run the half-initialized VM and crash.
Signed-off-by: Eduardo Habkost <ehabk...@redhat.com>
---
kvm-all.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/kvm-all.c b/kvm-all.c
index 721a390..4e19eff 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -1410,7 +1410,7 @@ int kvm_init(MachineClass *mc)
ret = kvm_ioctl(s, KVM_GET_API_VERSION, 0);
if (ret < KVM_API_VERSION) {
- if (ret > 0) {
+ if (ret >= 0) {
ret = -EINVAL;
}
fprintf(stderr, "kvm version too old\n");
@@ -1461,6 +1461,7 @@ int kvm_init(MachineClass *mc)
if (mc->kvm_type) {
type = mc->kvm_type(kvm_type);
} else if (kvm_type) {
+ ret = -EINVAL;
fprintf(stderr, "Invalid argument kvm-type=%s\n", kvm_type);
goto err;
}
@@ -1561,6 +1562,7 @@ int kvm_init(MachineClass *mc)
return 0;
err:
+ assert(ret < 0);
if (s->vmfd >= 0) {
close(s->vmfd);
}
--
1.9.0
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