[PATCH 03/89] KVM: arm64: Return error from kvm_arch_init_vm() on allocation failure

[Will Deacon]

If we fail to allocate the 'supported_cpus' cpumask in kvm_arch_init_vm()
then be sure to return -ENOMEM instead of success (0) on the failure
path.

Signed-off-by: Will Deacon <w...@kernel.org>
---
 arch/arm64/kvm/arm.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 523bc934fe2f..775b52871b51 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -146,8 +146,10 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
        if (ret)
                goto out_free_stage2_pgd;
 
-       if (!zalloc_cpumask_var(&kvm->arch.supported_cpus, GFP_KERNEL))
+       if (!zalloc_cpumask_var(&kvm->arch.supported_cpus, GFP_KERNEL)) {
+               ret = -ENOMEM;
                goto out_free_stage2_pgd;
+       }
        cpumask_copy(kvm->arch.supported_cpus, cpu_possible_mask);
 
        kvm_vgic_early_init(kvm);
-- 
2.36.1.124.g0e6072fb45-goog

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