linux-kernel - [PATCH v3 5/5] KVM: X86: Fix callers of kvm_apic_match

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Mon,  2 Dec 2019 15:13:14 -0500
From:   Peter Xu <peterx@...hat.com>
To:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:     Nitesh Narayan Lal <nitesh@...hat.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        peterx@...hat.com, Vitaly Kuznetsov <vkuznets@...hat.com>
Subject: [PATCH v3 5/5] KVM: X86: Fix callers of kvm_apic_match_dest() to use correct macros

Callers of kvm_apic_match_dest() should always pass in APIC_DEST_*
macros for either dest_mode and short_hand parameters.  Fix up all the
callers of kvm_apic_match_dest() that are not following the rule.

Reported-by: Sean Christopherson <sean.j.christopherson@...el.com>
Reported-by: Vitaly Kuznetsov <vkuznets@...hat.com>
Signed-off-by: Peter Xu <peterx@...hat.com>
---
 arch/x86/kvm/ioapic.c   | 11 +++++++----
 arch/x86/kvm/irq_comm.c |  3 ++-
 2 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/arch/x86/kvm/ioapic.c b/arch/x86/kvm/ioapic.c
index 901d85237d1c..1082ca8d11e5 100644
--- a/arch/x86/kvm/ioapic.c
+++ b/arch/x86/kvm/ioapic.c
@@ -108,8 +108,9 @@ static void __rtc_irq_eoi_tracking_restore_one(struct kvm_vcpu *vcpu)
 	union kvm_ioapic_redirect_entry *e;
 
 	e = &ioapic->redirtbl[RTC_GSI];
-	if (!kvm_apic_match_dest(vcpu, NULL, 0,	e->fields.dest_id,
-				e->fields.dest_mode))
+	if (!kvm_apic_match_dest(vcpu, NULL, APIC_DEST_NOSHORT,
+				 e->fields.dest_id,
+				 kvm_lapic_irq_dest_mode(e->fields.dest_mode)))
 		return;
 
 	new_val = kvm_apic_pending_eoi(vcpu, e->fields.vector);
@@ -237,6 +238,7 @@ void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, ulong *ioapic_handled_vectors)
 	struct dest_map *dest_map = &ioapic->rtc_status.dest_map;
 	union kvm_ioapic_redirect_entry *e;
 	int index;
+	u16 dm;
 
 	spin_lock(&ioapic->lock);
 
@@ -250,8 +252,9 @@ void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, ulong *ioapic_handled_vectors)
 		if (e->fields.trig_mode == IOAPIC_LEVEL_TRIG ||
 		    kvm_irq_has_notifier(ioapic->kvm, KVM_IRQCHIP_IOAPIC, index) ||
 		    index == RTC_GSI) {
-			if (kvm_apic_match_dest(vcpu, NULL, 0,
-			             e->fields.dest_id, e->fields.dest_mode) ||
+			dm = kvm_lapic_irq_dest_mode(e->fields.dest_mode);
+			if (kvm_apic_match_dest(vcpu, NULL, APIC_DEST_NOSHORT,
+						e->fields.dest_id, dm) ||
 			    kvm_apic_pending_eoi(vcpu, e->fields.vector))
 				__set_bit(e->fields.vector,
 					  ioapic_handled_vectors);
diff --git a/arch/x86/kvm/irq_comm.c b/arch/x86/kvm/irq_comm.c
index 5f59e5ebdbed..e89c2160b39f 100644
--- a/arch/x86/kvm/irq_comm.c
+++ b/arch/x86/kvm/irq_comm.c
@@ -417,7 +417,8 @@ void kvm_scan_ioapic_routes(struct kvm_vcpu *vcpu,
 
 			kvm_set_msi_irq(vcpu->kvm, entry, &irq);
 
-			if (irq.level && kvm_apic_match_dest(vcpu, NULL, 0,
+			if (irq.level &&
+			    kvm_apic_match_dest(vcpu, NULL, APIC_DEST_NOSHORT,
 						irq.dest_id, irq.dest_mode))
 				__set_bit(irq.vector, ioapic_handled_vectors);
 		}
-- 
2.21.0