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Handle EINVAL in the fault path and send SIGBUS on mmap'd access past EOF.

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From martin@
This commit is contained in:
skrll 2015-03-04 09:39:26 +00:00
parent 4118695e73
commit e66946542b
1 changed files with 15 additions and 4 deletions
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19
sys/arch/sh3/sh3/exception.c
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@ -1,4 +1,4 @@
/* $NetBSD: exception.c,v 1.63 2012/07/08 20:14:12 dsl Exp $ */
/* $NetBSD: exception.c,v 1.64 2015/03/04 09:39:26 skrll Exp $ */
/*-
* Copyright (c) 2002 The NetBSD Foundation, Inc. All rights reserved.
@ -79,7 +79,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: exception.c,v 1.63 2012/07/08 20:14:12 dsl Exp $");
__KERNEL_RCSID(0, "$NetBSD: exception.c,v 1.64 2015/03/04 09:39:26 skrll Exp $");
#include "opt_ddb.h"
#include "opt_kgdb.h"
@ -417,11 +417,22 @@ tlb_exception(struct lwp *l, struct trapframe *tf, uint32_t va)
/* Page not found. */
if (usermode) {
KSI_INIT_TRAP(&ksi);
if (err == ENOMEM)
switch (err) {
case ENOMEM:
ksi.ksi_signo = SIGKILL;
else {
break;
case EINVAL:
ksi.ksi_signo = SIGBUS;
ksi.ksi_code = BUS_ADRERR;
break;
case EACCES:
ksi.ksi_signo = SIGSEGV;
ksi.ksi_code = SEGV_ACCERR;
break;
default:
ksi.ksi_signo = SIGSEGV;
ksi.ksi_code = SEGV_MAPERR;
break;
}
goto user_fault;
} else {