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Change CASMAGIC to 0xFEDABABE so that it cannot accidentally end up in 

valid kernel memory.  Due to the VARM accesses above S0 should always
give a ptelen trap.
Bug found by Kalvis Duckmanton.
This commit is contained in:
ragge 2023-03-26 12:23:42 +00:00
parent 866780f714
commit 4344b95d5c
1 changed files with 2 additions and 2 deletions
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4
sys/arch/vax/include/trap.h
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@ -1,4 +1,4 @@
/* $NetBSD: trap.h,v 1.24 2011/07/03 02:18:20 matt Exp $ */
/* $NetBSD: trap.h,v 1.25 2023/03/26 12:23:42 ragge Exp $ */
/*-
* Copyright (c) 1990 The Regents of the University of California.
@ -74,7 +74,7 @@
#define AFLT_FLTUND 0xa /* floating underflow */
/* Used by RAS to detect an interrupted CAS */
#define CASMAGIC 0xBEDABABE /* high end of S0 space */
#define CASMAGIC 0xFEDABABE /* always invalid space */
/* Trap's coming from user mode */
#define T_USER 0x100