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[src/trunk]: src/sys/arch/aarch64/aarch64 return correct signo and code in ac...
details: https://anonhg.NetBSD.org/src/rev/45184b022d11
branches: trunk
changeset: 320814:45184b022d11
user: ryo <ryo%NetBSD.org@localhost>
date: Sat Jul 21 13:23:48 2018 +0000
description:
return correct signo and code in accordance with return value of uvm_fault.
diffstat:
sys/arch/aarch64/aarch64/fault.c | 117 ++++++++++++++++++--------------------
1 files changed, 55 insertions(+), 62 deletions(-)
diffs (157 lines):
diff -r 5221a2f525fd -r 45184b022d11 sys/arch/aarch64/aarch64/fault.c
--- a/sys/arch/aarch64/aarch64/fault.c Sat Jul 21 13:08:35 2018 +0000
+++ b/sys/arch/aarch64/aarch64/fault.c Sat Jul 21 13:23:48 2018 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: fault.c,v 1.5 2018/07/20 07:12:50 ryo Exp $ */
+/* $NetBSD: fault.c,v 1.6 2018/07/21 13:23:48 ryo Exp $ */
/*
* Copyright (c) 2017 Ryo Shimizu <ryo%nerv.org@localhost>
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: fault.c,v 1.5 2018/07/20 07:12:50 ryo Exp $");
+__KERNEL_RCSID(0, "$NetBSD: fault.c,v 1.6 2018/07/21 13:23:48 ryo Exp $");
#include "opt_ddb.h"
#include "opt_uvmhist.h"
@@ -160,6 +160,7 @@
UVMHIST_LOG(pmaphist, "use user vm_map %p (kernel_map=%p)",
map, kernel_map, 0, 0);
} else {
+ error = EINVAL;
goto do_fault;
}
@@ -211,7 +212,8 @@
fsc = __SHIFTOUT(esr, ESR_ISS_DATAABORT_DFSC); /* also IFSC */
if (user) {
if (!fatalabort) {
- if (error == ENOMEM) {
+ switch (error) {
+ case ENOMEM:
printf("UVM: pid %d (%s), uid %d killed: "
"out of swap\n",
l->l_proc->p_pid, l->l_proc->p_comm,
@@ -219,70 +221,61 @@
kauth_cred_geteuid(l->l_cred) : -1);
do_trapsignal(l, SIGKILL, 0,
(void *)tf->tf_far, esr);
- goto done_userfault;
- } else if (error == EACCES) {
+ break;
+ case EACCES:
do_trapsignal(l, SIGSEGV, SEGV_ACCERR,
(void *)tf->tf_far, esr);
- goto done_userfault;
+ break;
+ case EINVAL:
+ do_trapsignal(l, SIGBUS, BUS_ADRERR,
+ (void *)tf->tf_far, esr);
+ break;
+ default:
+ do_trapsignal(l, SIGSEGV, SEGV_MAPERR,
+ (void *)tf->tf_far, esr);
+ break;
}
- /* if other error, select signal by ESR */
+ } else {
+ /*
+ * fatal abort in usermode
+ */
+ switch (esr) {
+ case ESR_ISS_FSC_TLB_CONFLICT_FAULT:
+ case ESR_ISS_FSC_LOCKDOWN_ABORT:
+ case ESR_ISS_FSC_UNSUPPORTED_EXCLUSIVE:
+ case ESR_ISS_FSC_FIRST_LEVEL_DOMAIN_FAULT:
+ case ESR_ISS_FSC_SECOND_LEVEL_DOMAIN_FAULT:
+ default:
+ do_trapsignal(l, SIGSEGV, SEGV_MAPERR,
+ (void *)tf->tf_far, esr);
+ break;
+ case ESR_ISS_FSC_ADDRESS_SIZE_FAULT_0:
+ case ESR_ISS_FSC_ADDRESS_SIZE_FAULT_1:
+ case ESR_ISS_FSC_ADDRESS_SIZE_FAULT_2:
+ case ESR_ISS_FSC_ADDRESS_SIZE_FAULT_3:
+ do_trapsignal(l, SIGBUS, BUS_ADRERR,
+ (void *)tf->tf_far, esr);
+ break;
+ case ESR_ISS_FSC_SYNC_EXTERNAL_ABORT:
+ case ESR_ISS_FSC_SYNC_EXTERNAL_ABORT_TTWALK_0:
+ case ESR_ISS_FSC_SYNC_EXTERNAL_ABORT_TTWALK_1:
+ case ESR_ISS_FSC_SYNC_EXTERNAL_ABORT_TTWALK_2:
+ case ESR_ISS_FSC_SYNC_EXTERNAL_ABORT_TTWALK_3:
+ case ESR_ISS_FSC_SYNC_PARITY_ERROR:
+ case ESR_ISS_FSC_SYNC_PARITY_ERROR_ON_TTWALK_0:
+ case ESR_ISS_FSC_SYNC_PARITY_ERROR_ON_TTWALK_1:
+ case ESR_ISS_FSC_SYNC_PARITY_ERROR_ON_TTWALK_2:
+ case ESR_ISS_FSC_SYNC_PARITY_ERROR_ON_TTWALK_3:
+ do_trapsignal(l, SIGBUS, BUS_OBJERR,
+ (void *)tf->tf_far, esr);
+ break;
+ case ESR_ISS_FSC_ALIGNMENT_FAULT:
+ do_trapsignal(l, SIGBUS, BUS_ADRALN,
+ (void *)tf->tf_far, esr);
+ break;
+ }
}
- /*
- * fatal abort in usermode
- */
- switch (esr) {
- case ESR_ISS_FSC_ACCESS_FAULT_0:
- case ESR_ISS_FSC_ACCESS_FAULT_1:
- case ESR_ISS_FSC_ACCESS_FAULT_2:
- case ESR_ISS_FSC_ACCESS_FAULT_3:
- case ESR_ISS_FSC_PERM_FAULT_0:
- case ESR_ISS_FSC_PERM_FAULT_1:
- case ESR_ISS_FSC_PERM_FAULT_2:
- case ESR_ISS_FSC_PERM_FAULT_3:
- do_trapsignal(l, SIGSEGV, SEGV_ACCERR,
- (void *)tf->tf_far, esr);
- break;
- case ESR_ISS_FSC_TRANSLATION_FAULT_0:
- case ESR_ISS_FSC_TRANSLATION_FAULT_1:
- case ESR_ISS_FSC_TRANSLATION_FAULT_2:
- case ESR_ISS_FSC_TRANSLATION_FAULT_3:
- case ESR_ISS_FSC_TLB_CONFLICT_FAULT:
- case ESR_ISS_FSC_LOCKDOWN_ABORT:
- case ESR_ISS_FSC_UNSUPPORTED_EXCLUSIVE:
- case ESR_ISS_FSC_FIRST_LEVEL_DOMAIN_FAULT:
- case ESR_ISS_FSC_SECOND_LEVEL_DOMAIN_FAULT:
- default:
- do_trapsignal(l, SIGSEGV, SEGV_MAPERR,
- (void *)tf->tf_far, esr);
- break;
- case ESR_ISS_FSC_ADDRESS_SIZE_FAULT_0:
- case ESR_ISS_FSC_ADDRESS_SIZE_FAULT_1:
- case ESR_ISS_FSC_ADDRESS_SIZE_FAULT_2:
- case ESR_ISS_FSC_ADDRESS_SIZE_FAULT_3:
- do_trapsignal(l, SIGBUS, BUS_ADRERR,
- (void *)tf->tf_far, esr);
- break;
- case ESR_ISS_FSC_SYNC_EXTERNAL_ABORT:
- case ESR_ISS_FSC_SYNC_EXTERNAL_ABORT_TTWALK_0:
- case ESR_ISS_FSC_SYNC_EXTERNAL_ABORT_TTWALK_1:
- case ESR_ISS_FSC_SYNC_EXTERNAL_ABORT_TTWALK_2:
- case ESR_ISS_FSC_SYNC_EXTERNAL_ABORT_TTWALK_3:
- case ESR_ISS_FSC_SYNC_PARITY_ERROR:
- case ESR_ISS_FSC_SYNC_PARITY_ERROR_ON_TTWALK_0:
- case ESR_ISS_FSC_SYNC_PARITY_ERROR_ON_TTWALK_1:
- case ESR_ISS_FSC_SYNC_PARITY_ERROR_ON_TTWALK_2:
- case ESR_ISS_FSC_SYNC_PARITY_ERROR_ON_TTWALK_3:
- do_trapsignal(l, SIGBUS, BUS_OBJERR,
- (void *)tf->tf_far, esr);
- break;
- case ESR_ISS_FSC_ALIGNMENT_FAULT:
- do_trapsignal(l, SIGBUS, BUS_ADRALN,
- (void *)tf->tf_far, esr);
- break;
- }
- done_userfault:
-
#undef DEBUG_DUMP_ON_USERFAULT /* DEBUG */
#undef DEBUG_DDB_ON_USERFAULT /* DEBUG */
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