Module Name: src
Committed By: ryo
Date: Sat Jul 28 09:57:59 UTC 2018
Modified Files:
src/sys/arch/aarch64/aarch64: trap.c
Log Message:
Implement sigill_debug variable for debug (with DDB). if sigill_debug = 1,
illegal instruction will be logged.
e.g.) [ 75914.9966392] TRAP: pid 1422 (ssh), uid 1074: Unknown Reason (Illegal
Instruction): pc=0x0000faa29ae35088: pmull v0.1q, v0.1d, v0.1d
To generate a diff of this commit:
cvs rdiff -u -r1.7 -r1.8 src/sys/arch/aarch64/aarch64/trap.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/aarch64/aarch64/trap.c
diff -u src/sys/arch/aarch64/aarch64/trap.c:1.7 src/sys/arch/aarch64/aarch64/trap.c:1.8
--- src/sys/arch/aarch64/aarch64/trap.c:1.7 Thu Jul 19 18:30:28 2018
+++ src/sys/arch/aarch64/aarch64/trap.c Sat Jul 28 09:57:59 2018
@@ -1,4 +1,4 @@
-/* $NetBSD: trap.c,v 1.7 2018/07/19 18:30:28 christos Exp $ */
+/* $NetBSD: trap.c,v 1.8 2018/07/28 09:57:59 ryo Exp $ */
/*-
* Copyright (c) 2014 The NetBSD Foundation, Inc.
@@ -31,12 +31,13 @@
#include <sys/cdefs.h>
-__KERNEL_RCSID(1, "$NetBSD: trap.c,v 1.7 2018/07/19 18:30:28 christos Exp $");
+__KERNEL_RCSID(1, "$NetBSD: trap.c,v 1.8 2018/07/28 09:57:59 ryo Exp $");
#include "opt_arm_intr_impl.h"
#include "opt_compat_netbsd32.h"
#include <sys/param.h>
+#include <sys/kauth.h>
#include <sys/types.h>
#include <sys/atomic.h>
#include <sys/cpu.h>
@@ -73,6 +74,9 @@ __KERNEL_RCSID(1, "$NetBSD: trap.c,v 1.7
#include <machine/db_machdep.h>
#endif
+#ifdef DDB
+int sigill_debug = 0;
+#endif
const char * const trap_names[] = {
[ESR_EC_UNKNOWN] = "Unknown Reason (Illegal Instruction)",
@@ -271,6 +275,15 @@ trap_el0_sync(struct trapframe *tf)
default:
/* XXX notyet */
case ESR_EC_UNKNOWN:
+#ifdef DDB
+ if (sigill_debug) {
+ /* show illegal instruction */
+ printf("TRAP: pid %d (%s), uid %d: %s: pc=0x%016lx: %s\n",
+ curlwp->l_proc->p_pid, curlwp->l_proc->p_comm,
+ l->l_cred ? kauth_cred_geteuid(l->l_cred) : -1,
+ eclass_trapname(eclass), tf->tf_pc, strdisasm(tf->tf_pc));
+ }
+#endif
/* illegal or not implemented instruction */
do_trapsignal(l, SIGILL, ILL_ILLTRP, (void *)tf->tf_pc, esr);
userret(l);
