The following tests are crashing on Solaris 11.4:
   sun/security/pkcs11/ec/ReadCertificates.java
   sun/security/pkcs11/ec/TestCurves.java
   sun/security/pkcs11/ec/TestECDH.java

We see the crash also with SAP JVM 8 derived from the licensed sources.
We do not see the issue on Solaris 11.3


#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGBUS (0xa) at pc=0xfffffffe56617d30, pid=15923, tid=19
#
# JRE version: OpenJDK Runtime Environment (12.0.1) (build 12.0.0.1-internal+0-adhoc..jdk)
# Java VM: OpenJDK 64-Bit Server VM (12.0.0.1-internal+0-adhoc..jdk, mixed mode, sharing, tiered, compressed oops, g1 gc, solaris-sparc)
# Problematic frame:
# C [libc.so.1+0x117d30]
[timeout occurred during error reporting in step "printing problematic frame"] after 30 s.
# Core dump will be written. Default location: .../JTwork/sun/security/pkcs11/ec/TestECDH/core or core.15923
#
# If you would like to submit a bug report, please visit:
# http://bugreport.java.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

--------------- S U M M A R Y ------------

Command Line: -Dtest.src=.../jtreg/jtreg_test_12/test/jdk/sun/security/pkcs11/ec -Dtest.src.path=.../jtreg/jtreg_test_12/test/jdk/sun/security/pkcs11/ec:.../jtreg/jtreg_test_12/test/jdk/java/security/testlibrary:.../jtreg/jtreg_test_12/test/lib:.../jtreg/jtreg_test_12/test/jdk/sun/security/pkcs11 -Dtest.classes=.../JTwork/classes/sun/security/pkcs11/ec/TestECDH.d -Dtest.class.path=.../JTwork/classes/sun/security/pkcs11/ec/TestECDH.d:.../JTwork/classes/java/security/testlibrary:.../JTwork/classes/test/lib:.../JTwork/classes/sun/security/pkcs11 -Dtest.vm.opts=-ea -esa -Dtest.tool.vm.opts=-J-ea -J-esa -Dtest.compiler.opts= -Dtest.java.opts=-Djava.awt.headless=true -Djava.util.prefs.userRoot=.../tmp -Djava.io.tmpdir=.../tmp -Dhttp.proxyHost=proxy -Dhttp.proxyPort=8080 -Dhttps.proxyHost=proxy -Dhttps.proxyPort=8080 -Dhttp.nonProxyHosts="localhost|127.0.0.1|10.*|*.sap.corp|*.wdf.sap.corp" -Dtest.jdk=... -Dcompile.jdk=... -Dtest.timeout.factor=6.0 -Dtest.modules=jdk.crypto.cryptoki -Dtest.nativepath=.../jtreg/jtreg_test_12/test/jdk/jtreg/native --add-modules=jdk.crypto.cryptoki -ea -esa -Djava.awt.headless=true -Djava.util.prefs.userRoot=.../tmp -Djava.io.tmpdir=.../tmp -Dhttp.proxyHost=proxy -Dhttp.proxyPort=8080 -Dhttps.proxyHost=proxy -Dhttps.proxyPort=8080 -Dhttp.nonProxyHosts="localhost|127.0.0.1|10.*|*.sap.corp|*.wdf.sap.corp" -Djava.library.path=.../jtreg/jtreg_test_12/test/jdk/jtreg/native com.sun.javatest.regtest.agent.MainWrapper .../JTwork/sun/security/pkcs11/ec/TestECDH.d/main.0.jta

Host: Sparcv9 64 bit 4267 MHz, 128 cores, 48G,
[timeout occurred during error reporting in step "printing summary machine and OS info"] after 30 s.
Time: Wed Nov 7 01:45:41 2018 CET elapsed time: 93 seconds (0d 0h 1m 33s)

--------------- T H R E A D ---------------

Current thread (0x0000000100806000): JavaThread "MainThread" [_thread_in_native, id=19, stack(0xffffffff40c90000,0xffffffff40d90000)]

Stack: [0xffffffff40c90000,0xffffffff40d90000], sp=0xffffffff40d8d000, free space=1012k
Native frames: (J=compiled Java code, A=aot compiled Java code, j=interpreted, Vv=VM code, C=native code)
C [libc.so.1+0x117d30]
------ Timeout during error reporting after 120 s. ------