[HARMONY-6275] [jdwp][java6] Crash during shutdown on Linux

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Component/s: JDK
• Estimated Complexity: Advanced
• Assignee: Oliver Deakin
• Reporter: Oliver Deakin
• Created: 17/Jul/09 13:45
• Updated: 19/Aug/09 05:29
• Resolved: 22/Jul/09 14:54

Description

Executing a command such as "java -Xrunjdwp:transport=dt_socket,server=y,suspend=n HelloWorld" results in a crash during shutdown:

Listening for transport dt_socket at address: 59572
HelloWorld

Signal reported: GENERAL_PROTECTION_FAULT
Registers:
EAX: 0x00000000, EBX: 0xb7f3011c, ECX: 0xb7f1632c, EDX: 0x00000000
ESI: 0x00000000, EDI: 0x0860c9f0, ESP: 0x95cc4f40, EBP: 0x95cc4f68
EIP: 0xb7f266bc

Command line:
target/hdk/jdk/jre/bin/java -Xrunjdwp:transport=dt_socket,server=y,suspend=n HelloWorld

Working directory:
/home/odeakin/svn-checkouts/fed6

Environment variables:
TERM=xterm
SHELL=/bin/bash
SSH_CLIENT=9.20.183.162 4743 22
CVSROOT=:pserver:[e-mail]:/home/cvs/clear
SSH_TTY=/dev/pts/1
USER=odeakin
LS_COLORS=no=00:fi=00:di=01;34:ln=01;36:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:su=37;41:sg=30;43:tw=30;42:ow=34;42:st=37;44:ex=01;32:.tar=01;31:.tgz=01;31:.svgz=01;31:.arj=01;31:.taz=01;31:.lzh=01;31:.lzma=01;31:.zip=01;31:.z=01;31:.Z=01;31:.dz=01;31:.gz=01;31:.bz2=01;31:.bz=01;31:.tbz2=01;31:.tz=01;31:.deb=01;31:.rpm=01;31:.jar=01;31:.rar=01;31:.ace=01;31:.zoo=01;31:.cpio=01;31:.7z=01;31:.rz=01;31:.jpg=01;35:.jpeg=01;35:.gif=01;35:.bmp=01;35:.pbm=01;35:.pgm=01;35:.ppm=01;35:.tga=01;35:.xbm=01;35:.xpm=01;35:.tif=01;35:.tiff=01;35:.png=01;35:.svg=01;35:.mng=01;35:.pcx=01;35:.mov=01;35:.mpg=01;35:.mpeg=01;35:.m2v=01;35:.mkv=01;35:.ogm=01;35:.mp4=01;35:.m4v=01;35:.mp4v=01;35:.vob=01;35:.qt=01;35:.nuv=01;35:.wmv=01;35:.asf=01;35:.rm=01;35:.rmvb=01;35:.flc=01;35:.avi=01;35:.fli=01;35:.gl=01;35:.dl=01;35:.xcf=01;35:.xwd=01;35:.yuv=01;35:.aac=00;36:.au=00;36:.flac=00;36:.mid=00;36:.midi=00;36:.mka=00;36:.mp3=00;36:.mpc=00;36:.ogg=00;36:.ra=00;36:.wav=00;36:
MAIL=/var/mail/odeakin
PATH=/home/odeakin/apache-ant-1.6.5/bin:/usr/lib/ccache:/usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/usr/games:/opt/j950/bin
PWD=/home/odeakin/svn-checkouts/fed6
JAVA_HOME=/opt/j950
EDITOR=vi
LANG=C
SHLVL=1
HOME=/home/odeakin
LANGUAGE=en_GB:en_US:en_GB:en
LOGNAME=odeakin
SSH_CONNECTION=9.20.183.162 4743 9.20.181.102 22
DISPLAY=:0
_=target/hdk/jdk/jre/bin/java
OLDPWD=/home/odeakin/svn-checkouts/fed6/working_classlib
LD_LIBRARY_PATH=/home/odeakin/svn-checkouts/fed6/target/hdk/jdk/jre/bin/default:/home/odeakin/svn-checkouts/fed6/target/hdk/jdk/jre/bin/:

Loaded modules:

/home/odeakin/svn-checkouts/fed6/target/hdk/jdk/jre/bin/java:
0x08048000:0x0804d000
0x0804d000:0x0804e000
[heap]:
0x0804e000:0x0862b000
/home/odeakin/svn-checkouts/fed6/target/hdk/jdk/jre/bin/libdt_socket.so:
0x95d46000:0x95d4a000
0x95d4a000:0x95d4b000
/home/odeakin/svn-checkouts/fed6/target/hdk/jdk/jre/bin/libhyniochar.so:
0x9600d000:0x96161000
0x96161000:0x96189000
/home/odeakin/svn-checkouts/fed6/target/hdk/jdk/jre/bin/libhyarchive.so:
0x96189000:0x96195000
0x96195000:0x96196000
/home/odeakin/svn-checkouts/fed6/target/hdk/jdk/jre/bin/libhyluni.so:
0x96196000:0x961cb000
0x961cb000:0x961cc000
/home/odeakin/svn-checkouts/fed6/target/hdk/jdk/jre/bin/libhyzlib.so:
0x961cc000:0x961de000
0x961de000:0x961df000
/home/odeakin/svn-checkouts/fed6/target/hdk/jdk/jre/bin/libjdwp.so:
0x962df000:0x96336000
0x96336000:0x96338000
/home/odeakin/svn-checkouts/fed6/target/hdk/jdk/jre/bin/default/libgc_gen_uncomp.so:
0xb6642000:0xb668d000
0xb668d000:0xb668f000
/home/odeakin/svn-checkouts/fed6/target/hdk/jdk/jre/bin/default/libjitrino.so:
0xb6690000:0xb68d5000
0xb68d5000:0xb68e2000
/home/odeakin/svn-checkouts/fed6/target/hdk/jdk/jre/bin/default/libem.so:
0xb6945000:0xb696d000
0xb696d000:0xb696e000
/lib/libnss_files-2.7.so:
0xb69ee000:0xb69f7000
0xb69f7000:0xb69f9000
/lib/libnss_nis-2.7.so:
0xb69f9000:0xb6a01000
0xb6a01000:0xb6a03000
/lib/libnsl-2.7.so:
0xb6a03000:0xb6a16000
0xb6a16000:0xb6a18000
/lib/libnss_compat-2.7.so:
0xb6a1a000:0xb6a21000
0xb6a21000:0xb6a23000
/home/odeakin/svn-checkouts/fed6/target/hdk/jdk/jre/bin/libhynio.so:
0xb6a26000:0xb6a28000
0xb6a28000:0xb6a29000
/home/odeakin/svn-checkouts/fed6/target/hdk/jdk/jre/bin/default/libicudata.so.34:
0xb6b4d000:0xb73c1000
0xb73c1000:0xb73c2000
/usr/lib/libxml2.so.2.6.32:
0xb73c2000:0xb74f5000
0xb74f5000:0xb74fa000
/usr/lib/libz.so.1.2.3.3:
0xb74fb000:0xb750f000
0xb750f000:0xb7510000
/home/odeakin/svn-checkouts/fed6/target/hdk/jdk/jre/bin/default/libicuuc.so.34:
0xb7510000:0xb7611000
0xb7611000:0xb7619000
/home/odeakin/svn-checkouts/fed6/target/hdk/jdk/jre/bin/default/libharmonyvm.so:
0xb7619000:0xb7757000
0xb7757000:0xb77b7000
/home/odeakin/svn-checkouts/fed6/target/hdk/jdk/jre/bin/default/libch.so:
0xb79ed000:0xb79f9000
0xb79f9000:0xb7a57000
/lib/libgcc_s.so.1:
0xb7c8d000:0xb7c99000
0xb7c99000:0xb7c9a000
/lib/libpthread-2.7.so:
0xb7c9b000:0xb7caf000
0xb7caf000:0xb7cb1000
/lib/librt-2.7.so:
0xb7cb3000:0xb7cba000
0xb7cba000:0xb7cbc000
/usr/lib/libstdc++.so.6.0.10:
0xb7cbc000:0xb7d9f000
0xb7d9f000:0xb7da2000
0xb7da2000:0xb7da4000
/lib/libdl-2.7.so:
0xb7daa000:0xb7dac000
0xb7dac000:0xb7dae000
/lib/libm-2.7.so:
0xb7dae000:0xb7dd2000
0xb7dd2000:0xb7dd4000
/lib/libc-2.7.so:
0xb7dd4000:0xb7f0c000
0xb7f0c000:0xb7f0d000
0xb7f0d000:0xb7f0f000
/home/odeakin/svn-checkouts/fed6/target/hdk/jdk/jre/bin/default/libvmi.so:
0xb7f12000:0xb7f16000
0xb7f16000:0xb7f17000
/home/odeakin/svn-checkouts/fed6/target/hdk/jdk/jre/bin/libhyprt.so:
0xb7f18000:0xb7f30000
0xb7f30000:0xb7f34000
/home/odeakin/svn-checkouts/fed6/target/hdk/jdk/jre/bin/libhythr.so:
0xb7f35000:0xb7f50000
0xb7f50000:0xb7f51000
/lib/ld-2.7.so:
0xb7f83000:0xb7f9d000
0xb7f9d000:0xb7f9f000
[stack]:
0xbfa9c000:0xbfa9f000
[vdso]:
0xffffe000:0xfffff000

Stack trace:
0: 0xb7f266bc hysock_set_nonblocking (hysock.c:2723)
1: 0x95d470fb SetSocketBlockingMode(_jdwpTransportEnv*, hysocket_struct*, bool) (SocketTransport.cpp:-1)
2: 0x95d479f5 TCPIPSocketTran_Accept(_jdwpTransportEnv*, long long, long long) (SocketTransport.cpp:-1)
3: 0x963287b0 jdwp::TransportManager::Connect() (TransportManager_pd.cpp:-1)
4: 0x9630f7ee jdwp::PacketDispatcher::Run(JNIEnv_External*) (TransportManager_pd.cpp:-1)
5: 0x963110a6 jdwp::PacketDispatcher::StartFunction(jvmtiEnv_struct*, JNIEnv_External*, void*) (TransportManager_pd.cpp:-1)
6: 0xb7704846 jthread_wrapper_start_proc(void*) (thread_java_basic.cpp:167)
7: 0xb7f414b8 thread_start_func (thread_os.c:106)
8: 0xb7ca0f3b start_thread (??:-1)
9: 0xb7e9ebee __clone (??:-1)
<end of stack trace>

Crashed module:
/home/odeakin/svn-checkouts/fed6/target/hdk/jdk/jre/bin/libhyprt.so
(JNI native library)

VM attached threads:

--->[0x95cc5b90] '_jdwp_PacketDispatcher'
[0x95d45b90] '_jdwp_EventDispatcher'
[0xb7c8c8e0] 'destroy'
Segmentation fault

A bit of debugging shows that we're getting into the hysock calls with a null pointer for the socket struct, which probably means that it's been freed as part of the JDWP shutdown phase before we've finished using it.