The access type for an instruction storage/segment interrupt should not

include PROT_READ, otherwise faults on executable pages mapped only as
PORT_EXEC will not work.

"obviously correct" deraadt@

diff --git a/sys/arch/powerpc64/powerpc64/trap.c b/sys/arch/powerpc64/powerpc64/trap.c
index fdba2f0..f8e0970 100644 (file)
--- a/sys/arch/powerpc64/powerpc64/trap.c
+++ b/sys/arch/powerpc64/powerpc64/trap.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: trap.c,v 1.51 2021/05/11 18:21:12 kettenis Exp $      */
+/*     $OpenBSD: trap.c,v 1.52 2023/01/02 23:03:18 kettenis Exp $      */
 
 /*
  * Copyright (c) 2020 Mark Kettenis <kettenis@openbsd.org>
@@ -305,7 +305,7 @@ trap(struct trapframe *frame)
 
                map = &p->p_vmspace->vm_map;
                va = frame->srr0;
-               access_type = PROT_READ | PROT_EXEC;
+               access_type = PROT_EXEC;
                error = uvm_fault(map, trunc_page(va), 0, access_type);
                if (error == 0)
                        uvm_grow(p, va);