[jboss-jira] [JBoss JIRA] (WFLY-9943) Sometimes WF process does not exit on RHEL 6 (32/64 bit) and IBM JDK 8

Sometimes WF process does not exit on RHEL 6 (32/64 bit) and IBM JDK 8 ---------------------------------------------------------------------- Key: WFLY-9943 URL: https://issues.jboss.org/browse/WFLY-9943 Project: WildFly Issue Type: Bug Components: Server Affects Versions: 12.0.0.Final Environment: RHEL 6 32/64 bit IBM SDK 8.0.5.10: {code}java version "1.8.0_161 Java(TM) SE Runtime Environment (build 8.0.5.10 - pxi3280sr5fp10-20180214_01(SR5 FP10)) IBM J9 VM (build 2.9, JRE 1.8.0 Linux x86-32 20180208_378436 (JIT enabled, AOT enabled) OpenJ9 - 39bb844 OMR - c04ccb2 IBM - 2321a81) JCL - 20180209_01 based on Oracle jdk8u161-b12 {code} Reporter: Miroslav Novak Assignee: Jason Greene Attachments: pstack.txt Sometimes happens that WF12 process does not exit when :shutdown CLI operation called and hangs indefinitely. This happens only RHEL 6 (32/64 bit) with IBM SDK8. Calling kill -3 does not create any javacore dump and only output could be gathered from pstack (attached). It indicates that JVM shutdown thread is hanging on: {code} Thread 25 (Thread 0xb7792b70 (LWP 25507)): #0 0x00bd4424 in __kernel_vsyscall () #1 0x00b2243c in pthread_cond_wait@(a)GLIBC_2.3.2 () from /lib/libpthread.so.0 #2 0x004f8b1f in monitor_wait_original () from /qa/tools/opt/ibm-java-i386-sdk-8.0-5.10/jre/lib/i386/default/libj9thr29.so #3 0x004f9957 in omrthread_monitor_wait () from /qa/tools/opt/ibm-java-i386-sdk-8.0-5.10/jre/lib/i386/default/libj9thr29.so #4 0x0033e217 in protectedDestroyJavaVM () from /qa/tools/opt/ibm-java-i386-sdk-8.0-5.10/jre/lib/i386/default/libj9vm29.so #5 0x0042cf6e in omrsig_protect () from /qa/tools/opt/ibm-java-i386-sdk-8.0-5.10/jre/lib/i386/default/libj9prt29.so #6 0x0033db93 in DestroyJavaVM () from /qa/tools/opt/ibm-java-i386-sdk-8.0-5.10/jre/lib/i386/default/libj9vm29.so #7 0x00815999 in DestroyJavaVM () from /qa/tools/opt/ibm-java-i386-sdk-8.0-5.10/jre/lib/i386/default/libjvm.so #8 0x00528649 in JavaMain () from /qa/tools/opt/ibm-java-i386-sdk-8.0-5.10/jre/bin/../lib/i386/jli/libjli.so #9 0x00b1ebc9 in start_thread () from /lib/libpthread.so.0 #10 0x001fc04e in clone () from /lib/libc.so.6 {code} There are other 24 threads which might be blocking this thread or a dead lock. This appears to be problem in IBM SDK 8 in combination RHEL 6 GLIBC_2.3.2 library.