Natives memory problem crashing JBoss EAP: double free or corruption

Gracefully shutting down JBoss EAP with natives enabled results in a JVM crash.

http://hudson.qa.jboss.com/hudson/view/EAP51-Perf/job/eap-510-load-primitive-PingJspEL-single-natives/1/console-perf01/

...
[JBoss] 07:02:24,305 INFO [MailService] Mail service 'java:/Mail' removed from JNDI
[JBoss] 07:02:24,359 INFO [StandardService] Stopping service jboss.web
[JBossERR] *** glibc detected *** java: double free or corruption (!prev): 0x0000000057138660 ***
[JBossERR] ======= Backtrace: =========
[JBossERR] /lib64/libc.so.6[0x3829e7230f]
[JBossERR] /lib64/libc.so.6(cfree+0x4b)[0x3829e7276b]
[JBossERR] /usr/lib64/libapr-1.so.0(apr_allocator_destroy+0x1b)[0x2aabd3a3165b]
[JBossERR] /usr/lib64/libapr-1.so.0(apr_pool_terminate+0x2d)[0x2aabd3a31e1d]
[JBossERR] [0x2aaaaaf6a986]
[JBossERR] ======= Memory map: ========
[JBossERR] 40000000-40009000 r-xp 00000000 00:17 12968935 /qa/tools/opt/x86_64/jdk1.6.0_20/bin/java
[JBossERR] 40108000-4010a000 rwxp 00008000 00:17 12968935 /qa/tools/opt/x86_64/jdk1.6.0_20/bin/java
[JBossERR] 4010a000-4010d000 ---p 4010a000 00:00 0
[JBossERR] 4010d000-4020b000 rwxp 4010d000 00:00 0
[JBossERR] 4020b000-4020e000 ---p 4020b000 00:00 0
[JBossERR] 4020e000-4030c000 rwxp 4020e000 00:00 0
...
[JBossERR] 5af7f000-5af82000 ---p 5af7f000 00:00 0
[JBossERR] 5af82000-5b080000 rwxp 5af82000 00:00 0
[JBossERR] 3829a00000-3829a1c000 r-xp 00000000 fd:00 1507734 /lib64/ld-2.5.so
...
[JBossERR] 2adae70b2000-2adae70eb000 rwxp 2adae70b2000 00:00 0
[JBossERR] 7fffd8318000-7fffd832f000 rwxp 7ffffffe8000 00:00 0 [stack]
[JBossERR] ffffffffff600000-ffffffffffe00000 ---p 00000000 00:00 0 [vdso]
=EOF=