The following three hotspot JTREG tests failed consistently when run with -XX:ObjectAlignmentInBytes=32 on 64-bit Linux.
The tested hotspot image was built from the rt source repository.

The hs_err files are attached.

gc/7168848/HumongousAlloc.java Failed. Unexpected exit from test [exit code: 134]

Will allocate objects of size: 786432 bytes and sleep for 1000 ms after every 40th allocation.
[GC pause (G1 Humongous Allocation) (young) (initial-mark) 34M->34M(100M), 0.0126390 secs]
[GC concurrent-root-region-scan-start]
[GC concurrent-root-region-scan-end, 0.0072270 secs]
[GC concurrent-mark-start]
[GC concurrent-mark-end, 0.0004270 secs]
[GC remark, 0.0083470 secs]
[GC cleanup 38M->5372K(100M), 0.0041380 secs]
[GC concurrent-cleanup-start]
[GC concurrent-cleanup-end, 0.0004670 secs]
[GC pause (G1 Evacuation Pause) (young)# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc: SuppressErrorAt=/concurrentMark.inline.hpp:397
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/java/east/u1/hseigel/bug_8009595/src/share/vm/gc_implementation/g1/concurrentMark.inline.hpp:397), pid=19704, tid=139835555436304
# assert(!_prevMarkBitMap->isMarked((HeapWord*) p)) failed: sanity
#
# JRE version: Java(TM) SE Runtime Environment (8.0-b97) (build 1.8.0-ea-b97)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.0-b37-internal-fastdebug mixed mode linux-amd64 compressed oops)
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /java/east/u1/hseigel/bug_8009595/jtregBug/JTwork/scratch/hs_err_pid19704.log




gc/8000311/Test8000311.java Failed. Unexpected exit from test [exit code: 134]

command: main -XX:+UseG1GC -XX:ParallelGCThreads=0 -XX:+ResizePLAB -XX:+ExplicitGCInvokesConcurrent Test8000311
reason: User specified action: run main/othervm -XX:+UseG1GC -XX:ParallelGCThreads=0 -XX:+ResizePLAB -XX:+ExplicitGCInvokesConcurrent Test8000311
elapsed time (seconds): 4.275
----------System.out:(20/1056)----------
# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc: SuppressErrorAt=/concurrentMark.hpp:109
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/java/east/u1/hseigel/bug_8009595/src/share/vm/gc_implementation/g1/concurrentMark.hpp:109), pid=20202, tid=140482409461520
# assert(offsetToHeapWord(heapWordToOffset(res)) == res) failed: sanity
#
# JRE version: Java(TM) SE Runtime Environment (8.0-b97) (build 1.8.0-ea-b97)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.0-b37-internal-fastdebug mixed mode linux-amd64 compressed oops)
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /java/east/u1/hseigel/bug_8009595/jtregBug/JTwork/scratch/hs_err_pid20202.log



gc/metaspace/G1AddMetaspaceDependency.java Failed. Unexpected exit from test [exit code: 134]

command: main -XX:+UseG1GC -XX:G1UpdateBufferSize=1 G1AddMetaspaceDependency
reason: User specified action: run main/othervm -XX:+UseG1GC -XX:G1UpdateBufferSize=1 G1AddMetaspaceDependency
elapsed time (seconds): 20.546
----------System.out:(20/1056)----------
# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc: SuppressErrorAt=/concurrentMark.hpp:109
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/java/east/u1/hseigel/bug_8009595/src/share/vm/gc_implementation/g1/concurrentMark.hpp:109), pid=20690, tid=139639598860048
# assert(offsetToHeapWord(heapWordToOffset(res)) == res) failed: sanity
#
# JRE version: Java(TM) SE Runtime Environment (8.0-b97) (build 1.8.0-ea-b97)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.0-b37-internal-fastdebug mixed mode linux-amd64 compressed oops)
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /java/east/u1/hseigel/bug_8009595/jtregBug/JTwork/scratch/hs_err_pid20690.log