Running 32 bit Java on 64 bit Hardy cores upon UI invocation

[Mark Beierl]

Binary package hint: ia32-sun-java6-bin

Running a 32 bit Java VM program that attempts to display a UI pane causes a crash on Hardy 64 bit.

Description: Ubuntu hardy (development branch)
Release: 8.04

Step to recreate:

/usr/lib/jvm/ia32-java-6-sun-1.6.0.05/jre/bin/jcontrol

Produces the following output:

Locking assertion failure. Backtrace:
#0 /usr/lib32/libxcb-xlib.so.0 [0xf7d27767]
#1 /usr/lib32/libxcb-xlib.so.0(xcb_xlib_unlock+0x31) [0xf7d278b1]
#2 /usr/lib32/libX11.so.6(_XReply+0xfd) [0xc0cdf29d]
#3 /usr/lib/jvm/ia32-java-6-sun-1.6.0.05/jre/lib/i386/xawt/libmawt.so [0xc0de28ce]
#4 /usr/lib/jvm/ia32-java-6-sun-1.6.0.05/jre/lib/i386/xawt/libmawt.so [0xc0dbf067]
#5 /usr/lib/jvm/ia32-java-6-sun-1.6.0.05/jre/lib/i386/xawt/libmawt.so [0xc0dbf318]
#6 /usr/lib/jvm/ia32-java-6-sun-1.6.0.05/jre/lib/i386/xawt/libmawt.so(Java_sun_awt_X11GraphicsEnvironment_initDisplay+0x2f) [0xc0dbf61f]
#7 [0xf4cc13aa]
#8 [0xf4cb9f0d]
#9 [0xf4cb9f0d]
#10 [0xf4cb7249]
#11 /usr/lib/jvm/ia32-java-6-sun-1.6.0.05/jre/lib/i386/server/libjvm.so [0x637338d]
#12 /usr/lib/jvm/ia32-java-6-sun-1.6.0.05/jre/lib/i386/server/libjvm.so [0x64fd168]
#13 /usr/lib/jvm/ia32-java-6-sun-1.6.0.05/jre/lib/i386/server/libjvm.so [0x6373220]
#14 /usr/lib/jvm/ia32-java-6-sun-1.6.0.05/jre/lib/i386/server/libjvm.so(JVM_DoPrivileged+0x363) [0x63c90d3]
#15 /usr/lib/jvm/ia32-java-6-sun-1.6.0.05/jre/lib/i386/libjava.so(Java_java_security_AccessController_doPrivileged__Ljava_security_PrivilegedAction_2+0x3d) [0xf7cd296d]
#16 [0xf4cc13aa]
#17 [0xf4cb9da7]
#18 [0xf4cb7249]
#19 /usr/lib/jvm/ia32-java-6-sun-1.6.0.05/jre/lib/i386/server/libjvm.so [0x637338d]
java: xcb_xlib.c:82: xcb_xlib_unlock: Assertion `c->xlib.lock' failed.
/usr/lib/jvm/ia32-java-6-sun-1.6.0.05/jre/bin/jcontrol: line 135: 20718 Aborted (core dumped) ${java_home}/java -Djavaplugin.user.profile=${USER_JPI_PROFILE} -Xbootclasspath/a:${java_home}/../lib/deploy.jar ${_JAVA_VM_OPTIONS} com.sun.deploy.panel.ControlPanel

[Matti Lindell (mlind)]

In i386, running jconsole prints the backtrace, but doesn't crash. I wonder if the sloppy lock patch is included in /usr/lib32/libxcb-xlib.so.0 or why it crashes on amd64.

For context, see bug #87947 and bug #214848.