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kvm: selftests: ensure vcpu file is released 

The selftests were not munmap-ing the kvm_run area from the vcpu file descriptor.
The result was that kvm_vcpu_release was not called and a reference was left in the
parent "struct kvm".  Ultimately this was visible in the upcoming state save/restore
test as an error when KVM attempted to create a duplicate debugfs entry.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2018-07-26 13:02:24 +02:00
parent 87ccb7dbb2
commit 0a505fe6f2
1 changed files with 9 additions and 1 deletions
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10
tools/testing/selftests/kvm/lib/kvm_util.c
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@ -238,8 +238,12 @@ struct vcpu *vcpu_find(struct kvm_vm *vm,
static void vm_vcpu_rm(struct kvm_vm *vm, uint32_t vcpuid)
{
struct vcpu *vcpu = vcpu_find(vm, vcpuid);
int ret;
int ret = close(vcpu->fd);
ret = munmap(vcpu->state, sizeof(*vcpu->state));
TEST_ASSERT(ret == 0, "munmap of VCPU fd failed, rc: %i "
"errno: %i", ret, errno);
close(vcpu->fd);
TEST_ASSERT(ret == 0, "Close of VCPU fd failed, rc: %i "
"errno: %i", ret, errno);
@ -295,6 +299,10 @@ void kvm_vm_free(struct kvm_vm *vmp)
TEST_ASSERT(ret == 0, "Close of vm fd failed,\n"
" vmp->fd: %i rc: %i errno: %i", vmp->fd, ret, errno);
close(vmp->kvm_fd);
TEST_ASSERT(ret == 0, "Close of /dev/kvm fd failed,\n"
" vmp->kvm_fd: %i rc: %i errno: %i", vmp->kvm_fd, ret, errno);
/* Free the structure describing the VM. */
free(vmp);
}