JVM hanging when using G1GC on JDK8 b78 or b79 (Linux 32 bit)
Uwe Schindler
uschindler at apache.org
Tue Mar 5 21:48:40 UTC 2013
Hi,
since a few month we are extensively testing various preview builds of JDK 8 for compatibility with Apache Lucene and Solr, so we can find any bugs early and prevent the problems we had with the release of Java 7 two years ago. Currently we have a Linux (Ubuntu 64bit) Jenkins machine that has various JDKs (JDK 6, JDK 7, JDK 8 snapshot, IBM J9, older JRockit) installed, choosing a different one with different hotspot and garbage collector settings on every run of the test suite (which takes approx. 30-45 minutes).
JDK 8 b79 works so far very well on Linux, we found some strange behavior in early versions (maybe compiler errors), but no longer at the moment. There is one configuration that constantly and reproducibly hangs in one module that is tested: The configuration uses JDK 8 b79 (same for b78), 32 bit, and G1GC (server or client does not matter). The JVM running the tests hangs irresponsible (jstack or kill -3 have no effect/cannot connect, standard kill does not stop it, only kill -9 actually kills it). It can be reproduced in this Lucene module 100% (it hangs always).
I was able to connect with GDB to the JVM and get a stack trace on all threads (see attachment, dump.txt). As you see all threads of G1GC seem to hang in a syscall (os:park(), a conditional wait in pthread library). Unfortunately that’s all I can give you. A Java stacktrace is not possible because the JVM reacts on neither kill -3 nor jstack. With all other garbage collectors it passes the test without hangs in a few seconds, with 32 bit G1GC it can stand still for hours. The 64 bit JVM passes with G1GC, so only the 32 bit variant is affected. Client or Server VM makes no difference.
To reproduce:
- Use a 32 bit JDK 8 b78 or b79 (tested on Linux 64 bit, but this should not matter)
- Download Lucene Source code (e.g. the snapshot version we were testing with: https://builds.apache.org/job/Lucene-Artifacts-trunk/2212/artifact/lucene/dist/)
- change to directory lucene/analysis/uima and run:
ant -Dargs="-server -XX:+UseG1GC" -Dtests.multiplier=3 -Dtests.jvms=1 test
After a while the test framework prints "stalled" messages (because the child VM actually running the test no longer responds). The PID is also printed. Try to get a stack trace or kill it, no response. Only kill -9 helps. Choosing another garbage collector in the above command line makes the test finish after a few seconds, e.g. -Dargs="-server -XX:+UseConcMarkSweepGC"
I posted this bug report directly to the mailing list, because with earlier bug reports, there seem to be a problem with bugs.sun.com - there is no response from any reviewer after several weeks and we were able to help to find and fix javadoc and javac-compiler bugs early. So I hope you can help for this bug, too.
Uwe
-----
Uwe Schindler
uschindler at apache.org
Apache Lucene PMC Member / Committer
Bremen, Germany
http://lucene.apache.org/
-------------- next part --------------
GNU gdb (Ubuntu/Linaro 7.4-2012.04-0ubuntu2.1) 7.4-2012.04
Copyright (C) 2012 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 "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.launchpad.net/gdb-linaro/>.
Attaching to process 22925
Reading symbols from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/bin/java...(no debugging symbols found)...done.
Reading symbols from /lib/i386-linux-gnu/libpthread.so.0...(no debugging symbols found)...done.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0xcf3f7b40 (LWP 22959)]
[New Thread 0xf247eb40 (LWP 22958)]
[New Thread 0xcf478b40 (LWP 22957)]
[New Thread 0xcf4f9b40 (LWP 22956)]
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[New Thread 0xcf96eb40 (LWP 22952)]
[New Thread 0xcf9efb40 (LWP 22951)]
[New Thread 0xcfdf9b40 (LWP 22950)]
[New Thread 0xcfe7ab40 (LWP 22949)]
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[New Thread 0xf14ffb40 (LWP 22945)]
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[New Thread 0xf18ffb40 (LWP 22943)]
[New Thread 0xf1affb40 (LWP 22942)]
[New Thread 0xf1cffb40 (LWP 22941)]
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[New Thread 0xf20ffb40 (LWP 22939)]
[New Thread 0xf22ffb40 (LWP 22938)]
[New Thread 0xf24ffb40 (LWP 22937)]
[New Thread 0xf26ffb40 (LWP 22936)]
[New Thread 0xf28ffb40 (LWP 22935)]
[New Thread 0xf2affb40 (LWP 22934)]
[New Thread 0xf2cffb40 (LWP 22933)]
[New Thread 0xf2effb40 (LWP 22932)]
[New Thread 0xf30f3b40 (LWP 22931)]
[New Thread 0xf6836b40 (LWP 22930)]
Loaded symbols for /lib/i386-linux-gnu/libpthread.so.0
Reading symbols from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/bin/../lib/i386/jli/libjli.so...(no debugging symbols found)...done.
Loaded symbols for /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/bin/../lib/i386/jli/libjli.so
Reading symbols from /lib/i386-linux-gnu/libdl.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib/i386-linux-gnu/libdl.so.2
Reading symbols from /lib/i386-linux-gnu/libc.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib/i386-linux-gnu/libc.so.6
Reading symbols from /lib/ld-linux.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib/ld-linux.so.2
Reading symbols from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so...(no debugging symbols found)...done.
Loaded symbols for /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
Reading symbols from /lib/i386-linux-gnu/libm.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib/i386-linux-gnu/libm.so.6
Reading symbols from /lib/i386-linux-gnu/librt.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/i386-linux-gnu/librt.so.1
Reading symbols from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/libverify.so...(no debugging symbols found)...done.
Loaded symbols for /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/libverify.so
Reading symbols from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/libjava.so...(no debugging symbols found)...done.
Loaded symbols for /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/libjava.so
Reading symbols from /lib/i386-linux-gnu/libnss_compat.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib/i386-linux-gnu/libnss_compat.so.2
Reading symbols from /lib/i386-linux-gnu/libnsl.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/i386-linux-gnu/libnsl.so.1
Reading symbols from /lib/i386-linux-gnu/libnss_nis.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib/i386-linux-gnu/libnss_nis.so.2
Reading symbols from /lib/i386-linux-gnu/libnss_files.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib/i386-linux-gnu/libnss_files.so.2
Reading symbols from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/libzip.so...(no debugging symbols found)...done.
Loaded symbols for /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/libzip.so
Reading symbols from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/libnet.so...(no debugging symbols found)...done.
Loaded symbols for /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/libnet.so
Reading symbols from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/libmanagement.so...(no debugging symbols found)...done.
Loaded symbols for /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/libmanagement.so
Reading symbols from /lib/i386-linux-gnu/libnss_dns.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib/i386-linux-gnu/libnss_dns.so.2
Reading symbols from /lib/i386-linux-gnu/libresolv.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib/i386-linux-gnu/libresolv.so.2
Reading symbols from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/libnio.so...(no debugging symbols found)...done.
Loaded symbols for /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/libnio.so
0xf7743430 in __kernel_vsyscall ()
Thread 31 (Thread 0xf6836b40 (LWP 22930)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98374 in Monitor::ILock(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e985cd in Monitor::lock_without_safepoint_check() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf6f4e338 in SafepointSynchronize::block(JavaThread*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf6feab97 in JavaThread::check_safepoint_and_suspend_for_native_trans(JavaThread*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf6cfe1a9 in jni_CallObjectMethod () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#8 0xf67d2d29 in JNU_GetStringPlatformChars () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/libjava.so
#9 0xf67cdc34 in Java_java_io_UnixFileSystem_canonicalize0 ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/libjava.so
#10 0xf32e683b in ?? ()
#11 0xf3346784 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
Thread 30 (Thread 0xf30f3b40 (LWP 22931)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98b82 in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e99370 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf704e258 in GangWorker::loop() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf704de68 in GangWorker::run() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#8 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#9 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 29 (Thread 0xf2effb40 (LWP 22932)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98b82 in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e99370 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf704e258 in GangWorker::loop() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf704de68 in GangWorker::run() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#8 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#9 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 28 (Thread 0xf2cffb40 (LWP 22933)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98b82 in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e99370 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf704e258 in GangWorker::loop() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf704de68 in GangWorker::run() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#8 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#9 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 27 (Thread 0xf2affb40 (LWP 22934)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98b82 in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e99370 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf704e258 in GangWorker::loop() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf704de68 in GangWorker::run() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#8 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#9 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 26 (Thread 0xf28ffb40 (LWP 22935)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98b82 in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e99370 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf704e258 in GangWorker::loop() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf704de68 in GangWorker::run() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#8 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#9 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 25 (Thread 0xf26ffb40 (LWP 22936)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98b82 in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e99370 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf704e258 in GangWorker::loop() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf704de68 in GangWorker::run() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#8 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#9 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 24 (Thread 0xf24ffb40 (LWP 22937)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98b82 in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e99370 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf704e258 in GangWorker::loop() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf704de68 in GangWorker::run() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#8 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#9 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 23 (Thread 0xf22ffb40 (LWP 22938)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98b82 in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e99370 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf704e258 in GangWorker::loop() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf704de68 in GangWorker::run() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#8 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#9 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 22 (Thread 0xf20ffb40 (LWP 22939)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98b82 in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e99370 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf6b5fb16 in SuspendibleThreadSet::join() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf6b5ea41 in ConcurrentG1RefineThread::run_young_rs_sampling() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf6b5ef91 in ConcurrentG1RefineThread::run() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#8 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#9 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#10 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 21 (Thread 0xf1effb40 (LWP 22940)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98b82 in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e99370 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf6b5ed9e in ConcurrentG1RefineThread::run() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#8 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 20 (Thread 0xf1cffb40 (LWP 22941)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98b82 in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e99370 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf6b5ed9e in ConcurrentG1RefineThread::run() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#8 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 19 (Thread 0xf1affb40 (LWP 22942)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98b82 in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e99370 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf6b5ed9e in ConcurrentG1RefineThread::run() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#8 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 18 (Thread 0xf18ffb40 (LWP 22943)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98b82 in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e99370 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf6b5ed9e in ConcurrentG1RefineThread::run() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#8 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 17 (Thread 0xf16ffb40 (LWP 22944)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98b82 in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e99370 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf6b5ed9e in ConcurrentG1RefineThread::run() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#8 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 16 (Thread 0xf14ffb40 (LWP 22945)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98b82 in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e99370 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf6b5ed9e in ConcurrentG1RefineThread::run() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#8 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 15 (Thread 0xf147eb40 (LWP 22946)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98b82 in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e99370 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf6b5ed9e in ConcurrentG1RefineThread::run() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#8 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 14 (Thread 0xf13fdb40 (LWP 22947)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98b82 in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e99370 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf6b5ed9e in ConcurrentG1RefineThread::run() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#8 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 13 (Thread 0xcfefbb40 (LWP 22948)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98b82 in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e99370 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf703c53c in VMThread::execute(VM_Operation*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf6b818c0 in ConcurrentMarkThread::run() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#8 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#9 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 12 (Thread 0xcfe7ab40 (LWP 22949)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98b82 in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e99370 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf704e258 in GangWorker::loop() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf704de68 in GangWorker::run() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#8 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#9 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 11 (Thread 0xcfdf9b40 (LWP 22950)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98b82 in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e99370 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf704e258 in GangWorker::loop() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf704de68 in GangWorker::run() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#8 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#9 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 10 (Thread 0xcf9efb40 (LWP 22951)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98b82 in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e99370 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf704f094 in WorkGangBarrierSync::enter() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf6b62a09 in ConcurrentMark::enter_first_sync_barrier(unsigned int) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf6b65adc in CMTask::do_marking_step(double, bool, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#8 0xf6b69dc9 in G1CMDrainMarkingStackClosure::do_void() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#9 0xf6f2bdff in ReferenceProcessor::process_phase3(DiscoveredList&, bool, BoolObjectClosure*, OopClosure*, VoidClosure*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#10 0xf6f2cf6d in ReferenceProcessor::process_discovered_reflist(DiscoveredList*, ReferencePolicy*, bool, BoolObjectClosure*, OopClosure*, VoidClosure*, AbstractRefProcTaskExecutor*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#11 0xf6f2d33c in ReferenceProcessor::process_discovered_references(BoolObjectClosure*, OopClosure*, VoidClosure*, AbstractRefProcTaskExecutor*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#12 0xf6b61ea5 in ConcurrentMark::weakRefsWork(bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#13 0xf6b66638 in ConcurrentMark::checkpointRootsFinal(bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#14 0xf6b82024 in CMCheckpointRootsFinalClosure::do_void() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#15 0xf703dc65 in VM_CGC_Operation::doit() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#16 0xf703d2a7 in VM_Operation::evaluate() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#17 0xf703b44e in VMThread::evaluate_operation(VM_Operation*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#18 0xf703b9e8 in VMThread::loop() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#19 0xf703c095 in VMThread::run() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#20 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#21 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#22 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 9 (Thread 0xcf96eb40 (LWP 22952)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6ebcb73 in ObjectMonitor::wait(long long, bool, Thread*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6fb3983 in ObjectSynchronizer::wait(Handle, long long, Thread*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf6d2b7fa in JVM_MonitorWait () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf31bf2b6 in ?? ()
#7 0xf31b7387 in ?? ()
#8 0xf31b7387 in ?? ()
#9 0xf31b4459 in ?? ()
#10 0xf6cd328f in JavaCalls::call_helper(JavaValue*, methodHandle*, JavaCallArguments*, Thread*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#11 0xf6ec7ef9 in os::os_exception_wrapper(void (*)(JavaValue*, methodHandle*, JavaCallArguments*, Thread*), JavaValue*, methodHandle*, JavaCallArguments*, Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#12 0xf6cd4392 in JavaCalls::call_virtual(JavaValue*, KlassHandle, Symbol*, Symbol*, JavaCallArguments*, Thread*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#13 0xf6cd47cb in JavaCalls::call_virtual(JavaValue*, Handle, KlassHandle, Symbol*, Symbol*, Thread*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#14 0xf6d2362d in thread_entry(JavaThread*, Thread*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#15 0xf6fe9439 in JavaThread::thread_main_inner() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#16 0xf6fe95b9 in JavaThread::run() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#17 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#18 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#19 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 8 (Thread 0xf2a7eb40 (LWP 22953)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6ebcb73 in ObjectMonitor::wait(long long, bool, Thread*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6fb3983 in ObjectSynchronizer::wait(Handle, long long, Thread*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf6d2b7fa in JVM_MonitorWait () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf31bf2b6 in ?? ()
#7 0xf31b7387 in ?? ()
#8 0xf31b751a in ?? ()
#9 0xf31b751a in ?? ()
#10 0xf31b4459 in ?? ()
#11 0xf6cd328f in JavaCalls::call_helper(JavaValue*, methodHandle*, JavaCallArguments*, Thread*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#12 0xf6ec7ef9 in os::os_exception_wrapper(void (*)(JavaValue*, methodHandle*, JavaCallArguments*, Thread*), JavaValue*, methodHandle*, JavaCallArguments*, Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#13 0xf6cd4392 in JavaCalls::call_virtual(JavaValue*, KlassHandle, Symbol*, Symbol*, JavaCallArguments*, Thread*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#14 0xf6cd47cb in JavaCalls::call_virtual(JavaValue*, Handle, KlassHandle, Symbol*, Symbol*, Thread*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#15 0xf6d2362d in thread_entry(JavaThread*, Thread*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#16 0xf6fe9439 in JavaThread::thread_main_inner() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#17 0xf6fe95b9 in JavaThread::run() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#18 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#19 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#20 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 7 (Thread 0xf287eb40 (LWP 22954)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98b82 in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e993f4 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf6b5f1a5 in SurrogateLockerThread::loop() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf6fe9439 in JavaThread::thread_main_inner() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf6fe95b9 in JavaThread::run() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#8 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#9 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#10 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 6 (Thread 0xf267eb40 (LWP 22955)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf7720cc5 in sem_wait@@GLIBC_2.1 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ecd4e2 in check_pending_signals(bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6ec6bd2 in signal_thread_entry(JavaThread*, Thread*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6fe9439 in JavaThread::thread_main_inner() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf6fe95b9 in JavaThread::run() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#8 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 5 (Thread 0xcf4f9b40 (LWP 22956)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98374 in Monitor::ILock(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e985cd in Monitor::lock_without_safepoint_check() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf6f4e338 in SafepointSynchronize::block(JavaThread*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf6feab97 in JavaThread::check_safepoint_and_suspend_for_native_trans(JavaThread*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf6adbdad in ciKlass::is_subtype_of(ciKlass*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#8 0xf6ffb611 in TypeKlassPtr::xmeet(Type const*) const ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#9 0xf6ff906d in Type::meet(Type const*) const ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#10 0xf6ff9516 in Type::filter(Type const*) const ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#11 0xf6ac2c5b in PhiNode::Value(PhaseTransform*) const ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#12 0xf6f0c2d8 in PhaseCCP::analyze() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#13 0xf6b4950c in Compile::Optimize() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#14 0xf6b4bea2 in Compile::Compile(ciEnv*, C2Compiler*, ciMethod*, int, bool, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#15 0xf6ab359f in C2Compiler::compile_method(ciEnv*, ciMethod*, int) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#16 0xf6b52ae1 in CompileBroker::invoke_compiler_on_method(CompileTask*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#17 0xf6b53dcd in CompileBroker::compiler_thread_loop() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#18 0xf6fe2af8 in compiler_thread_entry(JavaThread*, Thread*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#19 0xf6fe9439 in JavaThread::thread_main_inner() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#20 0xf6fe95b9 in JavaThread::run() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#21 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#22 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#23 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 4 (Thread 0xcf478b40 (LWP 22957)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98b82 in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e993f4 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf6b4eaa7 in CompileQueue::get() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf6b539d8 in CompileBroker::compiler_thread_loop() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf6fe2af8 in compiler_thread_entry(JavaThread*, Thread*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#8 0xf6fe9439 in JavaThread::thread_main_inner() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#9 0xf6fe95b9 in JavaThread::run() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#10 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#11 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 3 (Thread 0xf247eb40 (LWP 22958)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ec849c in os::PlatformEvent::park() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98b82 in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e99370 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf6f514fb in ServiceThread::service_thread_entry(JavaThread*, Thread*) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf6fe9439 in JavaThread::thread_main_inner() ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf6fe95b9 in JavaThread::run() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#8 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#9 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#10 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 2 (Thread 0xcf3f7b40 (LWP 22959)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771ed13 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf6ecd842 in os::PlatformEvent::park(long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#3 0xf6e98e5d in Monitor::IWait(Thread*, long long) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#4 0xf6e99370 in Monitor::wait(bool, long, bool) ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#5 0xf6fe5bb3 in WatcherThread::sleep() const ()
from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#6 0xf6fe6026 in WatcherThread::run() () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#7 0xf6ecee79 in java_start(Thread*) () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/lib/i386/server/libjvm.so
#8 0xf771ad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#9 0xf763ed3e in clone () from /lib/i386-linux-gnu/libc.so.6
Thread 1 (Thread 0xf754e6c0 (LWP 22925)):
#0 0xf7743430 in __kernel_vsyscall ()
#1 0xf771be1c in pthread_join () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xf770987a in ContinueInNewThread0 () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/bin/../lib/i386/jli/libjli.so
#3 0xf7704e46 in ContinueInNewThread () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/bin/../lib/i386/jli/libjli.so
#4 0xf770974b in JVMInit () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/bin/../lib/i386/jli/libjli.so
#5 0xf7707c05 in JLI_Launch () from /var/lib/jenkins/tools/java/32bit/jdk1.8.0-ea-b79/jre/bin/../lib/i386/jli/libjli.so
#6 0x080485bd in main ()
(gdb)
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