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Add specific checks for user space accesses to the page table area (just 

above the stack).
This commit is contained in:
mark 1997-07-31 00:16:12 +00:00
parent 905a93b982
commit 2319a993f9
1 changed files with 19 additions and 1 deletions
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20
sys/arch/arm32/arm32/fault.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: fault.c,v 1.13 1997/02/04 07:12:31 mark Exp $ */
/* $NetBSD: fault.c,v 1.14 1997/07/31 00:16:12 mark Exp $ */
/*
* Copyright (c) 1994-1997 Mark Brinicombe.
@ -332,6 +332,15 @@ copyfault:
printf("ok we have a page permission fault - addr=V%08x ",
(u_int)va);
if ((fault_code & FAULT_USER) && va >= VM_MAXUSER_ADDRESS) {
printf("Data abort: '%s' status = %03x address = %08x PC = %08x\n",
aborts[fault_status & 0xf], fault_status & 0xfff, fault_address,
fault_pc);
postmortem(frame);
trapsignal(p, SIGSEGV, TRAP_CODE);
break;
}
/*
* It is only a kernel address space fault iff:
* 1. (fault_code & FAULT_USER) == 0 and
@ -454,6 +463,15 @@ copyfault:
if (pmap_debug_level >= 0)
printf("ok we have a page fault - addr=V%08x ", (u_int)va);
if ((fault_code & FAULT_USER) && va >= VM_MAXUSER_ADDRESS) {
printf("Data abort: '%s' status = %03x address = %08x PC = %08x\n",
aborts[fault_status & 0xf], fault_status & 0xfff, fault_address,
fault_pc);
postmortem(frame);
trapsignal(p, SIGSEGV, TRAP_CODE);
break;
}
/*
* It is only a kernel address space fault iff:
* 1. (fault_code & FAULT_USER) == 0 and