Re: [PATCH] virt/kvm avoids oops by adding parameter checking
From: Paolo Bonzini <pbonzini@redhat.com>
Date: 2017-08-22 13:37:19
Also in:
kvm, lkml
On 22/08/2017 03:09, nixiaoming wrote:
The error parameter passed through the external interface causes the system oops.
So it is necessary to increase the parameter check for all EXPORT_SYMBOL_GPL
example:
void kvm_get_kvm(struct kvm *kvm)
{
refcount_inc(&kvm->users_count); /*oops if kvm == NULL */
}
EXPORT_SYMBOL_GPL(kvm_get_kvm);
Signed-off-by: nixiaoming <redacted>No. It's simply a precondition that kvm != NULL in this case. Paolo