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