Open
Description
This is copied from #4312 where @shirosaki discovered jnr-ffi crashes in the finalizer for its generated assembly code stubs. Repro and output follows.
import java.lang.reflect.Method;
import java.net.URL;
import java.net.URLClassLoader;
public class TestReload {
public static void main(String[] args) {
while (true) {
Thread t = new Thread() {
public void run() {
try (URLClassLoader loader = new URLClassLoader(new URL[] {
new URL("jar:file:./jruby-complete.jar!/")
})) {
// load class
Class<?> container = loader.loadClass("org.jruby.embed.ScriptingContainer");
Method runScriptlet = container.getMethod("runScriptlet", String.class);
Method setClassLoader = container.getMethod("setClassLoader", ClassLoader.class);
Method terminate = container.getMethod("terminate");
Object c = container.newInstance();
setClassLoader.invoke(c, loader);
runScriptlet.invoke(c, "puts \"Hello World!\"");
terminate.invoke(c);
} catch (Exception e) {
e.printStackTrace();
}
// unload class
System.gc();
System.runFinalization();
System.gc();
}
};
t.start();
try {
t.join();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}$ java -XX:+TraceClassUnloading TestReload
(snip)
[thread 9492 also had an error]
#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x000000006e4c24b0, pid=11608, tid=0x00000000000031e4
#
# JRE version: Java(TM) SE Runtime Environment (8.0_111-b14) (build 1.8.0_111-b14)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.111-b14 mixed mode windows-amd64 compressed oops)
# Problematic frame:
# C 0x000000006e4c24b0
#
# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
#
# An error report file with more information is saved as:
(snip)hs_err_pid11608.log contains:
#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x000000006e4c24b0, pid=11608, tid=0x00000000000031e4
#
# JRE version: Java(TM) SE Runtime Environment (8.0_111-b14) (build 1.8.0_111-b14)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.111-b14 mixed mode windows-amd64 compressed oops)
# Problematic frame:
# C 0x000000006e4c24b0
#
# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
#
# If you would like to submit a bug report, please visit:
# http://bugreport.java.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#
--------------- T H R E A D ---------------
Current thread (0x00000000213f6800): JavaThread "Secondary finalizer" [_thread_in_native, id=12772, stack(0x00000000287c0000,0x00000000288c0000)]
siginfo: ExceptionCode=0xc0000005, ExceptionInformation=0x0000000000000008 0x000000006e4c24b0
Registers:
RAX=0x000000006e4c24b0, RBX=0x00000000209448f0, RCX=0x00000000213f69f8, RDX=0x00000000288befc0
RSP=0x00000000288bef08, RBP=0x00000000288bef90, RSI=0x00000000822c06f8, RDI=0x000000010035aca8
R8 =0x000000000111d470, R9 =0x00000000000015f1, R10=0x0000000002eb7f48, R11=0x000000005c86b580
R12=0x0000000000000000, R13=0x00000000209448f0, R14=0x00000000288befc0, R15=0x00000000213f6800
RIP=0x000000006e4c24b0, EFLAGS=0x0000000000010206
Top of Stack: (sp=0x00000000288bef08)
0x00000000288bef08: 0000000002eb7f74 00000000213f6800
0x00000000288bef18: 0000000000000000 00000000ffffffff
0x00000000288bef28: 0000000000000001 0000000000000000
0x00000000288bef38: 0000000000000000 0000000000000000
0x00000000288bef48: 000000001b36fed0 00000000288bef50
0x00000000288bef58: 0000000000000000 00000000288befc0
0x00000000288bef68: 000000002094ba90 0000000000000000
0x00000000288bef78: 00000000209448f0 0000000000000000
0x00000000288bef88: 00000000288befb0 00000000288bf008
0x00000000288bef98: 0000000002ea835d 0000000000000000
0x00000000288befa8: 0000000002eb19d8 000000000111d470
0x00000000288befb8: 000000000111d470 0000000081d6a758
0x00000000288befc8: 00000000288befc8 00000000229df541
0x00000000288befd8: 00000000288bf028 0000000022a0e208
0x00000000288befe8: 0000000000000000 00000000229df5e0
0x00000000288beff8: 00000000288befb0 00000000288bf030
Instructions: (pc=0x000000006e4c24b0)
0x000000006e4c2490:
[error occurred during error reporting (printing registers, top of stack, instructions near pc), id 0xc0000005]
Register to memory mapping:
RAX=0x000000006e4c24b0 is an unknown value
RBX={method} {0x00000000209448f8} 'freeCallContext' '(J)V' in 'com/kenai/jffi/Foreign'
RCX=0x00000000213f69f8 is an unknown value
RDX=0x00000000288befc0 is pointing into the stack for thread: 0x00000000213f6800
RSP=0x00000000288bef08 is pointing into the stack for thread: 0x00000000213f6800
RBP=0x00000000288bef90 is pointing into the stack for thread: 0x00000000213f6800
RSI=0x00000000822c06f8 is an oop
com.kenai.jffi.CallContext
- klass: 'com/kenai/jffi/CallContext'
RDI=0x000000010035aca8 is pointing into metadata
R8 =0x000000000111d470 is an unknown value
R9 =0x00000000000015f1 is an unknown value
R10=0x0000000002eb7f48 is at code_begin+840 in an Interpreter codelet
method entry point (kind = native) [0x0000000002eb7c00, 0x0000000002eb8560] 2400 bytes
R11=0x000000005c86b580 is an unknown value
R12=0x0000000000000000 is an unknown value
R13={method} {0x00000000209448f8} 'freeCallContext' '(J)V' in 'com/kenai/jffi/Foreign'
R14=0x00000000288befc0 is pointing into the stack for thread: 0x00000000213f6800
R15=0x00000000213f6800 is a thread
Stack: [0x00000000287c0000,0x00000000288c0000], sp=0x00000000288bef08, free space=1019k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C 0x000000006e4c24b0
Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j com.kenai.jffi.Foreign.freeCallContext(J)V+0
j com.kenai.jffi.CallContext.finalize()V+17
J 4759 C1 java.lang.ref.Finalizer.runFinalizer(Lsun/misc/JavaLangAccess;)V (62 bytes) @ 0x000000000333d88c [0x000000000333d300+0x58c]
J 4758 C1 java.lang.ref.Finalizer.access$100(Ljava/lang/ref/Finalizer;Lsun/misc/JavaLangAccess;)V (6 bytes) @ 0x00000000035af55c [0x00000000035af500+0x5c]
j java.lang.ref.Finalizer$2.run()V+36
j java.lang.Thread.run()V+11
v ~StubRoutines::call_stub