Debugging segmentation faults in the JVM on linux-powerpc

Sat Jun 10 23:02:57 UTC 2017

And more:

(sid-powerpc-sbuild)root at kapitsa:/build/openjdk-9-fz188x/openjdk-9-9~b170# gdb --args /build/openjdk-9-fz188x/openjdk-9-9~b170/build/jdk/bin/jmod
-J-XX:+UseSerialGC -J-Xms32M -J-Xmx512M -J-XX:TieredStopAtLevel=1 create --module-version 9-Debian --target-platform 'linux-ppc' --module-path
/build/openjdk-9-fz188x/openjdk-9-9~b170/build/images/jmods --exclude '**{_the.*,_*.marker,*.diz,*.debuginfo,*.dSYM/**,*.dSYM,*.pdb,*.map}' --libs
/build/openjdk-9-fz188x/openjdk-9-9~b170/build/support/modules_libs/java.management --class-path
/build/openjdk-9-fz188x/openjdk-9-9~b170/build/jdk/modules/java.management --legal-notices
"/build/openjdk-9-fz188x/openjdk-9-9~b170/build/support/modules_legal/java.base" /build/openjdk-9-fz188x/openjdk-9-9~b170/build/support/jmods/java.management.jmod
GNU gdb (Debian 7.12-6) 7.12.0.20161007-git
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "powerpc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /build/openjdk-9-fz188x/openjdk-9-9~b170/build/jdk/bin/jmod...Reading symbols from
/build/openjdk-9-fz188x/openjdk-9-9~b170/build/jdk/bin/jmod.debuginfo...done.
done.
(gdb) r
Starting program: /build/openjdk-9-fz188x/openjdk-9-9~b170/build/jdk/bin/jmod -J-XX:+UseSerialGC -J-Xms32M -J-Xmx512M -J-XX:TieredStopAtLevel=1 create
--module-version 9-Debian --target-platform linux-ppc --module-path /build/openjdk-9-fz188x/openjdk-9-9\~b170/build/images/jmods --exclude
\*\*\{_the.\*,_\*.marker,\*.diz,\*.debuginfo,\*.dSYM/\*\*,\*.dSYM,\*.pdb,\*.map\} --libs
/build/openjdk-9-fz188x/openjdk-9-9\~b170/build/support/modules_libs/java.management --class-path
/build/openjdk-9-fz188x/openjdk-9-9\~b170/build/jdk/modules/java.management --legal-notices
/build/openjdk-9-fz188x/openjdk-9-9\~b170/build/support/modules_legal/java.base /build/openjdk-9-fz188x/openjdk-9-9\~b170/build/support/jmods/java.management.jmod
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/powerpc-linux-gnu/libthread_db.so.1".
[New Thread 0xf7f9f460 (LWP 22075)]

Thread 2 "jmod" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xf7f9f460 (LWP 22075)]
StubGenerator::SafeFetch32 (adr=0xabc, errValue=2748) at ./src/hotspot/src/cpu/zero/vm/stubGenerator_zero.cpp:211
211	    value = *adr;
(gdb) si
signalHandler (sig=11, info=0xf7f9d9c0, uc=0xf7f9da40) at ./src/hotspot/src/os/linux/vm/os_linux.cpp:4229
4229	void signalHandler(int sig, siginfo_t* info, void* uc) {
(gdb) bt
#0  signalHandler (sig=11, info=0xf7f9d9c0, uc=0xf7f9da40) at ./src/hotspot/src/os/linux/vm/os_linux.cpp:4229
#1  <signal handler called>
#2  StubGenerator::SafeFetch32 (adr=0xabc, errValue=2748) at ./src/hotspot/src/cpu/zero/vm/stubGenerator_zero.cpp:211
#3  0x0f9c6c0c in SafeFetch32 (errValue=2748, adr=0xabc) at ./src/hotspot/src/share/vm/runtime/stubRoutines.hpp:464
#4  test_safefetch32 () at ./src/hotspot/src/share/vm/runtime/stubRoutines.cpp:243
#5  StubRoutines::initialize2 () at ./src/hotspot/src/share/vm/runtime/stubRoutines.cpp:364
#6  0x0f9c7544 in stubRoutines_init2 () at ./src/hotspot/src/share/vm/runtime/stubRoutines.cpp:373
#7  0x0f4f04a0 in init_globals () at ./src/hotspot/src/share/vm/runtime/init.cpp:143
#8  0x0fa115e8 in Threads::create_vm (args=args at entry=0xf7f9ed3c, canTryAgain=canTryAgain at entry=0xf7f9ecd0) at ./src/hotspot/src/share/vm/runtime/thread.cpp:3630
#9  0x0f56da68 in JNI_CreateJavaVM_inner (args=0xf7f9ed3c, penv=0xf7f9ed38, vm=0xf7f9ed34) at ./src/hotspot/src/share/vm/prims/jni.cpp:3937
#10 JNI_CreateJavaVM (vm=vm at entry=0xf7f9ed34, penv=penv at entry=0xf7f9ed38, args=args at entry=0xf7f9ed3c) at ./src/hotspot/src/share/vm/prims/jni.cpp:4032
#11 0x0ff244cc in InitializeJVM (ifn=<synthetic pointer>, penv=0xf7f9ed38, pvm=0xf7f9ed34) at ./src/jdk/src/java.base/share/native/libjli/java.c:1481
#12 JavaMain (_args=<optimized out>) at ./src/jdk/src/java.base/share/native/libjli/java.c:408
#13 0x0ff28aa0 in call_continuation (_args=<optimized out>) at ./src/jdk/src/java.base/unix/native/libjli/java_md_solinux.c:895
#14 0x0ff67500 in start_thread () from /lib/powerpc-linux-gnu/libpthread.so.0
#15 0x0fe239b0 in clone () from /lib/powerpc-linux-gnu/libc.so.6
(gdb) n
4230	  assert(info != NULL && uc != NULL, "it must be old kernel");
(gdb) n
4229	void signalHandler(int sig, siginfo_t* info, void* uc) {
(gdb) n
4230	  assert(info != NULL && uc != NULL, "it must be old kernel");
(gdb) n
4231	  int orig_errno = errno;  // Preserve errno value over signal handler.
(gdb) n
4232	  JVM_handle_linux_signal(sig, info, uc, true);
(gdb) n
4231	  int orig_errno = errno;  // Preserve errno value over signal handler.
(gdb) n
4232	  JVM_handle_linux_signal(sig, info, uc, true);
(gdb) n

Thread 2 "jmod" received signal SIGSEGV, Segmentation fault.
StubGenerator::SafeFetchN (adr=0xabc, errValue=-553787651) at ./src/hotspot/src/cpu/zero/vm/stubGenerator_zero.cpp:232
232	    value = *adr;
(gdb) n
signalHandler (sig=11, info=0xf7f9d9c0, uc=0xf7f9da40) at ./src/hotspot/src/os/linux/vm/os_linux.cpp:4229
4229	void signalHandler(int sig, siginfo_t* info, void* uc) {
(gdb) n
4230	  assert(info != NULL && uc != NULL, "it must be old kernel");
(gdb) n
4229	void signalHandler(int sig, siginfo_t* info, void* uc) {
(gdb) n
4230	  assert(info != NULL && uc != NULL, "it must be old kernel");
(gdb) n
4231	  int orig_errno = errno;  // Preserve errno value over signal handler.
(gdb) n
4232	  JVM_handle_linux_signal(sig, info, uc, true);
(gdb) n
4231	  int orig_errno = errno;  // Preserve errno value over signal handler.
(gdb) n
4232	  JVM_handle_linux_signal(sig, info, uc, true);
(gdb) n
[New Thread 0xf55bf460 (LWP 22078)]
[New Thread 0xf53ff460 (LWP 22079)]
[New Thread 0xf50ff460 (LWP 22080)]
[New Thread 0xf4dff460 (LWP 22081)]
[New Thread 0xf4aff460 (LWP 22082)]
[New Thread 0xf45ff460 (LWP 22083)]
[New Thread 0xf447f460 (LWP 22084)]

Thread 2 "jmod" received signal SIGSEGV, Segmentation fault.
Java_java_util_zip_Deflater_deflateBytes (env=0xf7d0f460, this=0xf7f9e4e8, addr=<optimized out>, b=0xf7f9e4dc, off=<optimized out>, len=512, flush=0) at
./src/jdk/src/java.base/share/native/libzip/Deflater.c:199
199	        strm->next_in = (Bytef *) (in_buf + this_off);
(gdb) bt
#0  Java_java_util_zip_Deflater_deflateBytes (env=0xf7d0f460, this=0xf7f9e4e8, addr=<optimized out>, b=0xf7f9e4dc, off=<optimized out>, len=512, flush=0) at
./src/jdk/src/java.base/share/native/libzip/Deflater.c:199
#1  0x0fb002d0 in ffi_call_SYSV () from /build/openjdk-9-fz188x/openjdk-9-9~b170/build/jdk/lib/server/libjvm.so
#2  0x0faff2f4 in ffi_call () from /build/openjdk-9-fz188x/openjdk-9-9~b170/build/jdk/lib/server/libjvm.so
#3  0x0f2a7dfc in CppInterpreter::native_entry (method=<optimized out>, UNUSED=<optimized out>, __the_thread__=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:372
#4  0x0f2a412c in ZeroEntry::invoke (__the_thread__=0xf7d0f308, method=method at entry=0xf4120f68, this=<optimized out>) at
./src/hotspot/src/cpu/zero/vm/entry_zero.hpp:59
#5  CppInterpreter::invoke_method (method=method at entry=0xf4120f68, entry_point=<optimized out>, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/share/vm/interpreter/cppInterpreter.cpp:66
#6  0x0f2a5628 in CppInterpreter::main_loop (recurse=recurse at entry=0, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:150
#7  0x0f2a7138 in CppInterpreter::normal_entry (method=<optimized out>, UNUSED=<optimized out>, __the_thread__=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:79
#8  0x0f2a412c in ZeroEntry::invoke (__the_thread__=0xf7d0f308, method=method at entry=0xf41207a0, this=<optimized out>) at
./src/hotspot/src/cpu/zero/vm/entry_zero.hpp:59
#9  CppInterpreter::invoke_method (method=method at entry=0xf41207a0, entry_point=<optimized out>, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/share/vm/interpreter/cppInterpreter.cpp:66
#10 0x0f2a5628 in CppInterpreter::main_loop (recurse=recurse at entry=0, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:150
#11 0x0f2a7138 in CppInterpreter::normal_entry (method=<optimized out>, UNUSED=<optimized out>, __the_thread__=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:79
#12 0x0f2a412c in ZeroEntry::invoke (__the_thread__=0xf7d0f308, method=method at entry=0xf4120598, this=<optimized out>) at
./src/hotspot/src/cpu/zero/vm/entry_zero.hpp:59
#13 CppInterpreter::invoke_method (method=method at entry=0xf4120598, entry_point=<optimized out>, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/share/vm/interpreter/cppInterpreter.cpp:66
#14 0x0f2a5628 in CppInterpreter::main_loop (recurse=recurse at entry=0, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:150
#15 0x0f2a7138 in CppInterpreter::normal_entry (method=<optimized out>, UNUSED=<optimized out>, __the_thread__=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:79
#16 0x0f2a412c in ZeroEntry::invoke (__the_thread__=0xf7d0f308, method=method at entry=0xf4116f98, this=<optimized out>) at
./src/hotspot/src/cpu/zero/vm/entry_zero.hpp:59
#17 CppInterpreter::invoke_method (method=method at entry=0xf4116f98, entry_point=<optimized out>, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/share/vm/interpreter/cppInterpreter.cpp:66
#18 0x0f2a5628 in CppInterpreter::main_loop (recurse=recurse at entry=0, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:150
#19 0x0f2a7138 in CppInterpreter::normal_entry (method=<optimized out>, UNUSED=<optimized out>, __the_thread__=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:79
#20 0x0f2a412c in ZeroEntry::invoke (__the_thread__=0xf7d0f308, method=method at entry=0xf4116d88, this=<optimized out>) at
./src/hotspot/src/cpu/zero/vm/entry_zero.hpp:59
#21 CppInterpreter::invoke_method (method=method at entry=0xf4116d88, entry_point=<optimized out>, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/share/vm/interpreter/cppInterpreter.cpp:66
#22 0x0f2a5628 in CppInterpreter::main_loop (recurse=recurse at entry=0, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:150
#23 0x0f2a7138 in CppInterpreter::normal_entry (method=<optimized out>, UNUSED=<optimized out>, __the_thread__=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:79
#24 0x0f2a412c in ZeroEntry::invoke (__the_thread__=0xf7d0f308, method=method at entry=0xf4115070, this=<optimized out>) at
./src/hotspot/src/cpu/zero/vm/entry_zero.hpp:59
#25 CppInterpreter::invoke_method (method=method at entry=0xf4115070, entry_point=<optimized out>, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/share/vm/interpreter/cppInterpreter.cpp:66
#26 0x0f2a5628 in CppInterpreter::main_loop (recurse=recurse at entry=0, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:150
#27 0x0f2a7138 in CppInterpreter::normal_entry (method=<optimized out>, UNUSED=<optimized out>, __the_thread__=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:79
#28 0x0f2a412c in ZeroEntry::invoke (__the_thread__=0xf7d0f308, method=method at entry=0xf57daaf0, this=<optimized out>) at
./src/hotspot/src/cpu/zero/vm/entry_zero.hpp:59
#29 CppInterpreter::invoke_method (method=method at entry=0xf57daaf0, entry_point=<optimized out>, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/share/vm/interpreter/cppInterpreter.cpp:66
#30 0x0f2a5628 in CppInterpreter::main_loop (recurse=recurse at entry=0, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:150
#31 0x0f2a7138 in CppInterpreter::normal_entry (method=<optimized out>, UNUSED=<optimized out>, __the_thread__=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:79
#32 0x0f2a412c in ZeroEntry::invoke (__the_thread__=0xf7d0f308, method=method at entry=0xf41083e0, this=<optimized out>) at
./src/hotspot/src/cpu/zero/vm/entry_zero.hpp:59
#33 CppInterpreter::invoke_method (method=method at entry=0xf41083e0, entry_point=<optimized out>, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/share/vm/interpreter/cppInterpreter.cpp:66
#34 0x0f2a5628 in CppInterpreter::main_loop (recurse=recurse at entry=0, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:150
#35 0x0f2a7138 in CppInterpreter::normal_entry (method=<optimized out>, UNUSED=<optimized out>, __the_thread__=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:79
#36 0x0f2a412c in ZeroEntry::invoke (__the_thread__=0xf7d0f308, method=method at entry=0xf41054e0, this=<optimized out>) at
./src/hotspot/src/cpu/zero/vm/entry_zero.hpp:59
#37 CppInterpreter::invoke_method (method=method at entry=0xf41054e0, entry_point=<optimized out>, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/share/vm/interpreter/cppInterpreter.cpp:66
#38 0x0f2a5628 in CppInterpreter::main_loop (recurse=recurse at entry=0, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:150
#39 0x0f2a7138 in CppInterpreter::normal_entry (method=<optimized out>, UNUSED=<optimized out>, __the_thread__=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:79
#40 0x0f2a412c in ZeroEntry::invoke (__the_thread__=0xf7d0f308, method=method at entry=0xf4104fb0, this=<optimized out>) at
./src/hotspot/src/cpu/zero/vm/entry_zero.hpp:59
#41 CppInterpreter::invoke_method (method=method at entry=0xf4104fb0, entry_point=<optimized out>, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/share/vm/interpreter/cppInterpreter.cpp:66
#42 0x0f2a5628 in CppInterpreter::main_loop (recurse=recurse at entry=0, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:150
#43 0x0f2a7138 in CppInterpreter::normal_entry (method=<optimized out>, UNUSED=<optimized out>, __the_thread__=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:79
#44 0x0f2a412c in ZeroEntry::invoke (__the_thread__=0xf7d0f308, method=method at entry=0xf5a15c88, this=<optimized out>) at
./src/hotspot/src/cpu/zero/vm/entry_zero.hpp:59
#45 CppInterpreter::invoke_method (method=method at entry=0xf5a15c88, entry_point=<optimized out>, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/share/vm/interpreter/cppInterpreter.cpp:66
#46 0x0f2a5628 in CppInterpreter::main_loop (recurse=recurse at entry=0, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:150
#47 0x0f2a7138 in CppInterpreter::normal_entry (method=<optimized out>, UNUSED=<optimized out>, __the_thread__=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:79
#48 0x0f2a412c in ZeroEntry::invoke (__the_thread__=0xf7d0f308, method=method at entry=0xf5a15078, this=<optimized out>) at
./src/hotspot/src/cpu/zero/vm/entry_zero.hpp:59
#49 CppInterpreter::invoke_method (method=method at entry=0xf5a15078, entry_point=<optimized out>, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/share/vm/interpreter/cppInterpreter.cpp:66
#50 0x0f2a5628 in CppInterpreter::main_loop (recurse=recurse at entry=0, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:150
#51 0x0f2a7138 in CppInterpreter::normal_entry (method=<optimized out>, UNUSED=<optimized out>, __the_thread__=0xf7d0f308) at
./src/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp:79
#52 0x0f2a412c in ZeroEntry::invoke (__the_thread__=0xf7d0f308, method=method at entry=0xf5a0a870, this=this at entry=0xf5d00140) at
./src/hotspot/src/cpu/zero/vm/entry_zero.hpp:59
#53 CppInterpreter::invoke_method (method=method at entry=0xf5a0a870, entry_point=entry_point at entry=0xf5d00140 "\017*p\300\017*p\300\017*\201P\017*\202p\017",
__the_thread__=__the_thread__ at entry=0xf7d0f308) at ./src/hotspot/src/share/vm/interpreter/cppInterpreter.cpp:66
#54 0x0f9c5630 in StubGenerator::call_stub (call_wrapper=call_wrapper at entry=0xf7f9ea48, result=result at entry=0xf7f9ec60, result_type=result_type at entry=T_INT,
method=method at entry=0xf5a0a870, entry_point=entry_point at entry=0xf5d00140 "\017*p\300\017*p\300\017*\201P\017*\202p\017", parameters=<optimized out>,
parameter_words=1,
    __the_thread__=__the_thread__ at entry=0xf7d0f308) at ./src/hotspot/src/cpu/zero/vm/stubGenerator_zero.cpp:98
#55 0x0f53cccc in JavaCalls::call_helper (result=result at entry=0xf7f9ec58, method=..., args=args at entry=0xf7f9eb28,
__the_thread__=__the_thread__ at entry=0xf7d0f308) at ./src/hotspot/src/share/vm/runtime/javaCalls.cpp:419
#56 0x0f868838 in os::os_exception_wrapper (f=f at entry=0xf53c500 <JavaCalls::call_helper(JavaValue*, methodHandle const&, JavaCallArguments*, Thread*)>,
value=value at entry=0xf7f9ec58, method=..., args=args at entry=0xf7f9eb28, thread=thread at entry=0xf7d0f308) at ./src/hotspot/src/os/linux/vm/os_linux.cpp:5130
#57 0x0f53b91c in JavaCalls::call (result=result at entry=0xf7f9ec58, method=..., args=args at entry=0xf7f9eb28, __the_thread__=__the_thread__ at entry=0xf7d0f308) at
./src/hotspot/src/share/vm/runtime/javaCalls.cpp:306
#58 0x0f56b8e8 in jni_invoke_static (env=env at entry=0xf7d0f460, result=result at entry=0xf7f9ec58, method_id=method_id at entry=0xf469d808, args=args at entry=0xf7f9ec18,
__the_thread__=__the_thread__ at entry=0xf7d0f308, call_type=JNI_STATIC, receiver=0x0) at ./src/hotspot/src/share/vm/prims/jni.cpp:1119
#59 0x0f58d228 in jni_CallStaticVoidMethod (env=0xf7d0f460, cls=<optimized out>, methodID=0xf469d808) at ./src/hotspot/src/share/vm/prims/jni.cpp:1989
#60 0x0ff24f94 in JavaMain (_args=<optimized out>) at ./src/jdk/src/java.base/share/native/libjli/java.c:546
#61 0x0ff28aa0 in call_continuation (_args=<optimized out>) at ./src/jdk/src/java.base/unix/native/libjli/java_md_solinux.c:895
#62 0x0ff67500 in start_thread () from /lib/powerpc-linux-gnu/libpthread.so.0
#63 0x0fe239b0 in clone () from /lib/powerpc-linux-gnu/libc.so.6
(gdb) p in_buf
$1 = (jbyte *) 0xd43cb264 "\312\376\272\276"
(gdb) p this_off
$2 = 0
(gdb) p strm
$3 = (z_stream *) 0x10006
(gdb) p *strm
Cannot access memory at address 0x10006
(gdb)

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - glaubitz at debian.org
`. `'   Freie Universitaet Berlin - glaubitz at physik.fu-berlin.de
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913