From: Miaohe Lin linmiaohe@huawei.com
commit 5a2a961be2ad6a16eb388a80442443b353c11d16 upstream.
When alloc_cpumask_var_node() fails for a certain cpu, there might be some allocated cpumasks for percpu cpu_kick_mask. We should free these cpumasks or memoryleak will occur.
Fixes: baff59ccdc65 ("KVM: Pre-allocate cpumasks for kvm_make_all_cpus_request_except()") Signed-off-by: Miaohe Lin linmiaohe@huawei.com Link: https://lore.kernel.org/r/20220823063414.59778-1-linmiaohe@huawei.com Signed-off-by: Sean Christopherson seanjc@google.com Signed-off-by: Paolo Bonzini pbonzini@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- virt/kvm/kvm_main.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
--- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -5649,7 +5649,7 @@ int kvm_init(void *opaque, unsigned vcpu
r = kvm_async_pf_init(); if (r) - goto out_free_5; + goto out_free_4;
kvm_chardev_ops.owner = module; kvm_vm_fops.owner = module; @@ -5682,10 +5682,9 @@ err_register: kvm_vfio_ops_exit(); err_vfio: kvm_async_pf_deinit(); -out_free_5: +out_free_4: for_each_possible_cpu(cpu) free_cpumask_var(per_cpu(cpu_kick_mask, cpu)); -out_free_4: kmem_cache_destroy(kvm_vcpu_cache); out_free_3: unregister_reboot_notifier(&kvm_reboot_notifier);