[src/trunk]: src/sys/arch/sparc/sparc Handle EINVAL in the fault path, send S...

[martin <martin%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/3957e6052352
branches:  trunk
changeset: 336456:3957e6052352
user:      martin <martin%NetBSD.org@localhost>
date:      Mon Mar 02 13:53:19 2015 +0000

description:
Handle EINVAL in the fault path, send SIGSEGV on mmap access past EOF.

diffstat:

 sys/arch/sparc/sparc/trap.c |  38 ++++++++++++++++++++++++++------------
 1 files changed, 26 insertions(+), 12 deletions(-)

diffs (78 lines):

diff -r db906b708650 -r 3957e6052352 sys/arch/sparc/sparc/trap.c
--- a/sys/arch/sparc/sparc/trap.c       Mon Mar 02 13:51:24 2015 +0000
+++ b/sys/arch/sparc/sparc/trap.c       Mon Mar 02 13:53:19 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: trap.c,v 1.191 2013/11/01 06:22:46 mrg Exp $ */
+/*     $NetBSD: trap.c,v 1.192 2015/03/02 13:53:19 martin Exp $ */
 
 /*
  * Copyright (c) 1996
@@ -49,7 +49,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.191 2013/11/01 06:22:46 mrg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.192 2015/03/02 13:53:19 martin Exp $");
 
 #include "opt_ddb.h"
 #include "opt_compat_svr4.h"
@@ -949,17 +949,24 @@
                        return;
                }
                KSI_INIT_TRAP(&ksi);
-               if (rv == ENOMEM) {
+               switch (rv) {
+               case ENOMEM:
                        printf("UVM: pid %d (%s), uid %d killed: out of swap\n",
                               p->p_pid, p->p_comm,
                               l->l_cred ?
                               kauth_cred_geteuid(l->l_cred) : -1);
                        ksi.ksi_signo = SIGKILL;
-                       ksi.ksi_code = SI_NOINFO;
-               } else {
+                       break;
+               case EINVAL:
+                       ksi.ksi_signo = SIGBUS;
+                       ksi.ksi_code = BUS_ADRERR;
+               case EACCES:
                        ksi.ksi_signo = SIGSEGV;
-                       ksi.ksi_code = (rv == EACCES
-                               ? SEGV_ACCERR : SEGV_MAPERR);
+                       ksi.ksi_code = SEGV_ACCERR;
+               default:
+                       ksi.ksi_signo = SIGSEGV;
+                       ksi.ksi_code = SEGV_MAPERR;
+                       break;
                }
                ksi.ksi_trap = type;
                ksi.ksi_addr = (void *)v;
@@ -1236,17 +1243,24 @@
                        return;
                }
                KSI_INIT_TRAP(&ksi);
-               if (rv == ENOMEM) {
+               switch (rv) {
+               case ENOMEM:
                        printf("UVM: pid %d (%s), uid %d killed: out of swap\n",
                               p->p_pid, p->p_comm,
                               l->l_cred ?
                               kauth_cred_geteuid(l->l_cred) : -1);
                        ksi.ksi_signo = SIGKILL;
-                       ksi.ksi_code = SI_NOINFO;
-               } else {
+                       break;
+               case EINVAL:
+                       ksi.ksi_signo = SIGBUS;
+                       ksi.ksi_code = BUS_ADRERR;
+               case EACCES:
                        ksi.ksi_signo = SIGSEGV;
-                       ksi.ksi_code = (rv == EACCES)
-                               ? SEGV_ACCERR : SEGV_MAPERR;
+                       ksi.ksi_code = SEGV_ACCERR;
+               default:
+                       ksi.ksi_signo = SIGSEGV;
+                       ksi.ksi_code = SEGV_MAPERR;
+                       break;
                }
                ksi.ksi_trap = type;
                ksi.ksi_addr = (void *)sfva;