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comparison test/runtime/jsig/TestJNI.c @ 11147:732af649bc3a

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8017498: JVM crashes when native code calls sigaction(sig) where sig>=0x20 Summary: Added (sig < MAXSIGNUM) check in jsig.c Reviewed-by: dholmes, acorn
author ccheung
date Wed, 17 Jul 2013 12:22:57 -0700
parents
children 72727c4b6dec
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11146:e619a2766bcc 11147:732af649bc3a
1 /*
2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 #include <stdio.h>
25 #include <jni.h>
26 #define __USE_GNU
27 #include <signal.h>
28 #include <sys/ucontext.h>
29
30 #ifdef __cplusplus
31 extern "C" {
32 #endif
33
34 void sig_handler(int sig, siginfo_t *info, ucontext_t *context) {
35 int thrNum;
36
37 printf( " HANDLER (1) " );
38 // Move forward RIP to skip failing instruction
39 context->uc_mcontext.gregs[REG_RIP] += 6;
40 }
41
42 JNIEXPORT void JNICALL Java_TestJNI_doSomething(JNIEnv *env, jclass klass, jint val) {
43 struct sigaction act;
44 struct sigaction oact;
45 pthread_attr_t attr;
46 stack_t stack;
47
48 act.sa_flags = SA_ONSTACK|SA_RESTART|SA_SIGINFO;
49 sigfillset(&act.sa_mask);
50 act.sa_handler = SIG_DFL;
51 act.sa_sigaction = (void (*)())sig_handler;
52 sigaction(0x20+val, &act, &oact);
53
54 printf( " doSomething(%d) " , val);
55 printf( " old handler = %p " , oact.sa_handler);
56 }
57
58 #ifdef __cplusplus
59 }
60 #endif
61