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| author | Miaohe Lin <linmiaohe@huawei.com> | 2022-08-23 14:34:14 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-09-26 12:02:27 -0400 |
| commit | 5a2a961be2ad6a16eb388a80442443b353c11d16 (patch) | |
| tree | f15f680752824569aae3098a357956056d099bf2 /virt | |
| parent | d38ba8ccd9c22b177d50f896a1bdc2f0979b343f (diff) | |
| download | lwn-5a2a961be2ad6a16eb388a80442443b353c11d16.tar.gz lwn-5a2a961be2ad6a16eb388a80442443b353c11d16.zip | |
KVM: fix memoryleak in kvm_init()
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>
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/kvm_main.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 584a5bab3af3..dcf47da44844 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -5881,7 +5881,7 @@ int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, r = kvm_async_pf_init(); if (r) - goto out_free_5; + goto out_free_4; kvm_chardev_ops.owner = module; @@ -5905,10 +5905,9 @@ int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, out_unreg: 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); |