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KVM: PPC: e500mc: Fix a NULL dereference

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We should set "err = -ENOMEM;", otherwise it means we're returning
ERR_PTR(0) which is NULL.  It results in a NULL pointer dereference in
the caller.

Signed-off-by: Dan Carpenter <[email protected]>
Signed-off-by: Paul Mackerras <[email protected]>
This commit is contained in:
Dan Carpenter 2017-07-13 10:38:49 +03:00 • committed by Paul Mackerras
commit 50a1a25987
1 changed files with 3 additions and 1 deletions
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4
arch/powerpc/kvm/e500mc.c
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@ -331,8 +331,10 @@ static struct kvm_vcpu *kvmppc_core_vcpu_create_e500mc(struct kvm *kvm,
goto uninit_vcpu;
vcpu->arch.shared = (void *)__get_free_page(GFP_KERNEL | __GFP_ZERO);
if (!vcpu->arch.shared)
if (!vcpu->arch.shared) {
err = -ENOMEM;
goto uninit_tlb;
}
return vcpu;