executor: add include guards to KVM headers

Not having these results in three copies of every KVM-related #define
in each reproducer.

Author: ramosian-glider

executor/common_kvm.h

@@ -1,6 +1,9 @@
 // Copyright 2025 syzkaller project authors. All rights reserved.
 // Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
 
+#ifndef EXECUTOR_COMMON_KVM_H
+#define EXECUTOR_COMMON_KVM_H
+
 // This file is shared between executor and csource package.
 
 // Common KVM-related definitions.
@@ -52,3 +55,5 @@ static long syz_kvm_assert_syzos_kvm_exit(volatile long a0, volatile long a1)
 	return 0;
 }
 #endif
+
+#endif // EXECUTOR_COMMON_KVM_H

executor/common_kvm_386.h

@@ -1,6 +1,9 @@
 // Copyright 2025 syzkaller project authors. All rights reserved.
 // Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
 
+#ifndef EXECUTOR_COMMON_KVM_386_H
+#define EXECUTOR_COMMON_KVM_386_H
+
 // This file is shared between executor and csource package.
 
 #if SYZ_EXECUTOR || __NR_syz_kvm_setup_syzos_vm
@@ -37,3 +40,5 @@ static volatile long syz_kvm_setup_cpu(volatile long a0, volatile long a1, volat
 	return 0;
 }
 #endif
+
+#endif // EXECUTOR_COMMON_KVM_386_H

executor/common_kvm_amd64.h

@@ -1,6 +1,9 @@
 // Copyright 2017 syzkaller project authors. All rights reserved.
 // Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
 
+#ifndef EXECUTOR_COMMON_KVM_AMD64_H
+#define EXECUTOR_COMMON_KVM_AMD64_H
+
 // This file is shared between executor and csource package.
 
 // Implementation of syz_kvm_setup_cpu pseudo-syscall.
@@ -1182,3 +1185,5 @@ static long syz_kvm_assert_syzos_uexit(volatile long a0, volatile long a1)
 	return 0;
 }
 #endif
+
+#endif // EXECUTOR_COMMON_KVM_AMD64_H

executor/common_kvm_amd64_syzos.h

@@ -1,6 +1,9 @@
 // Copyright 2025 syzkaller project authors. All rights reserved.
 // Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
 
+#ifndef EXECUTOR_COMMON_KVM_AMD64_SYZOS_H
+#define EXECUTOR_COMMON_KVM_AMD64_SYZOS_H
+
 // This file provides guest code running inside the AMD64 KVM.
 
 #include "common_kvm_syzos.h"
@@ -394,3 +397,5 @@ GUEST_CODE static noinline void guest_handle_set_irq_handler(struct api_call_2*
 		handler_addr = executor_fn_guest_addr(uexit_irq_handler);
 	set_idt_gate(vector, handler_addr);
 }
+
+#endif // EXECUTOR_COMMON_KVM_AMD64_SYZOS_H

executor/common_kvm_arm64.h

@@ -1,3 +1,6 @@
+#ifndef EXECUTOR_COMMON_KVM_ARM64_H
+#define EXECUTOR_COMMON_KVM_ARM64_H
+
 // Copyright 2017 syzkaller project authors. All rights reserved.
 // Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
 
@@ -395,3 +398,5 @@ static long syz_kvm_assert_reg(volatile long a0, volatile long a1, volatile long
 	return 0;
 }
 #endif
+
+#endif // EXECUTOR_COMMON_KVM_ARM64_H

executor/common_kvm_arm64_syzos.h

@@ -1,6 +1,9 @@
 // Copyright 2024 syzkaller project authors. All rights reserved.
 // Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
 
+#ifndef EXECUTOR_COMMON_KVM_ARM64_SYZOS_H
+#define EXECUTOR_COMMON_KVM_ARM64_SYZOS_H
+
 // This file provides guest code running inside the ARM64 KVM.
 
 #include "common_kvm_syzos.h"
@@ -1348,3 +1351,5 @@ GUEST_CODE static void guest_prepare_its(int nr_cpus, int nr_devices, int nr_eve
 	guest_setup_its_mappings(ARM64_ADDR_ITS_CMDQ_BASE, ARM64_ADDR_ITS_ITT_TABLES, nr_events, nr_devices, nr_cpus);
 	guest_invalidate_all_rdists(ARM64_ADDR_ITS_CMDQ_BASE, nr_cpus);
 }
+
+#endif // EXECUTOR_COMMON_KVM_ARM64_SYZOS_H

executor/common_kvm_ppc64.h

@@ -1,6 +1,9 @@
 // Copyright 2020 syzkaller project authors. All rights reserved.
 // Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
 
+#ifndef EXECUTOR_COMMON_KVM_PPC64_H
+#define EXECUTOR_COMMON_KVM_PPC64_H
+
 // This file is shared between executor and csource package.
 
 // Implementation of syz_kvm_setup_cpu pseudo-syscall.
@@ -409,3 +412,5 @@ static volatile long syz_kvm_setup_cpu(volatile long a0, volatile long a1, volat
 
 	return 0;
 }
+
+#endif // EXECUTOR_COMMON_KVM_PPC64_H

executor/common_kvm_syzos.h

@@ -1,6 +1,9 @@
 // Copyright 2025 syzkaller project authors. All rights reserved.
 // Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
 
+#ifndef EXECUTOR_COMMON_KVM_SYZOS_H
+#define EXECUTOR_COMMON_KVM_SYZOS_H
+
 // Common SYZOS definitions.
 
 // Prevent function inlining. This attribute is applied to every guest_handle_* function,
@@ -37,3 +40,5 @@
 
 // Start/end of the guest section.
 extern char *__start_guest, *__stop_guest;
+
+#endif // EXECUTOR_COMMON_KVM_SYZOS_H

executor/kvm.h

@@ -1,6 +1,9 @@
 // Copyright 2017 syzkaller project authors. All rights reserved.
 // Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
 
+#ifndef EXECUTOR_KVM_H
+#define EXECUTOR_KVM_H
+
 // x86-specific definitions.
 #if GOARCH_amd64
 #define X86_ADDR_TEXT 0x0000
@@ -209,3 +212,5 @@
 #define ARM64_ADDR_ITS_PEND_TABLES (ARM64_ADDR_ITS_PROP_TABLE + SZ_64K)
 
 #endif // ARM64 SYZOS definitions
+
+#endif // EXECUTOR_KVM_H