KVM: x86: Avoid theoretical NULL pointer dereference in kvm_irq_delivery_to_apic_fast()
stable inclusion from stable-v5.10.137 commit ac7de8c2ba1292856fdd4a4c0764669b9607cf0a category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I60PLB Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=ac7de8c2ba1292856fdd4a4c0764669b9607cf0a -------------------------------- commit 00b5f371 upstream When kvm_irq_delivery_to_apic_fast() is called with APIC_DEST_SELF shorthand, 'src' must not be NULL. Crash the VM with KVM_BUG_ON() instead of crashing the host. Signed-off-by: NVitaly Kuznetsov <vkuznets@redhat.com> Message-Id: <20220325132140.25650-3-vkuznets@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com> Signed-off-by: NStefan Ghinea <stefan.ghinea@windriver.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com> Reviewed-by: NWei Li <liwei391@huawei.com>
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