vtest 2.5.0.9 failed on serveral machines with b31. For this test cycle, I tested with default GC.

Test machines: ( root passwd is machine name )
1. jtg-e250-3.sfbay tested with -d64 ( Serial GC )
   2 cpus, 1GB memory
   SunOS jtg-e250-3 5.9 Generic_Patch sun4u sparc SUNW,Ultra-250
2. jtg-e450.sfbay tested with -server (Parallel GC)
   4 cpus, 2GB memory
   SunOS jtg-e450 5.9 Generic sun4u sparc SUNW,Ultra-4
3. jtg-lx50-2.sfbay tested with -client (Serial GC)
   2 cpus, 2GB memory
   SunOS jtg-lx50-2 5.9 Generic_112234-03 i86pc i386 i86pc

To reproduce the failure:
1. export JAVA_HOME=<your java home>
2. execute the script
/net/jtgb4u4c.sfbay/export/sail8/bigapps/tests/runvtest.ksh followed by JVM flags

The stack traces on jtg-e250-3 and jtg-lx50-2 are similiar.

  ---- called from signal handler with signal 11 (SIGSEGV) ------
  [12] DefNewGeneration::copy_to_survivor_space(0x8115e20, 0xc5cd29f0, 0xc6616398),
at 0xdd79ee0f
  [13] FastScanClosure::do_oop(0xdcd1f85c, 0xc6616398), at 0xdd79edc5
  [14] objArrayKlass::oop_oop_iterate_nv(0xcdc2ed28, 0xc6616360, 0xdcd1f550), at
0xdd7a337d
  [15] ContiguousSpaceDCTOC::walk_mem_region_with_cl(0x8121d98, 0xdcd1f548,
0xc6616360, 0xc6616430, 0xdcd1f550), at 0xdd7a28a2
  [16] Filtering_DCTOC::walk_mem_region(0x8121d98, 0xdcd1f588, 0xc6614dd8,
0xc6616430), at 0xdd7a27a9
  [17] DirtyCardToOopClosure::do_MemRegion(0x8121d98, 0xdcd1f5c8), at 0xdd7a2495
  [18] ClearNoncleanCardWrapper::do_MemRegion(0xdcd1f6d0, 0xdcd1f610), at 0xdd7a22f2
  [19] CardTableModRefBS::non_clean_card_iterate_work(0x8115dc0, 0xdcd1f688,
0xdcd1f6d0, 0x0), at 0xdd7a214b
  [20] CardTableModRefBS::non_clean_card_iterate(0x8115dc0, 0x81177a0, 0xdcd1f6c8,
0x8121d98, 0xdcd1f6d0, 0x0), at 0xdd7a1f84
  [21] CardTableRS::younger_refs_in_space_iterate(0x8115db8, 0x81177a0, 0xdcd1f85c),
at 0xdd7a1eb0
  [22] Generation::younger_refs_in_space_iterate(0x81176a8, 0x81177a0, 0xdcd1f85c),
at 0xdd7a1e09
  [23] OneContigSpaceCardGeneration::younger_refs_iterate(0x81176a8, 0xdcd1f85c), at
0xdd7a1dc3
  [24] CardTableRS::younger_refs_iterate(0x8115db8, 0x81176a8, 0xdcd1f85c), at
0xdd7a3d31
  [25] GenCollectedHeap::process_strong_roots(0x8115d00, 0x0, 0x1, 0x0, 0x1,
0xdcd1f85c, 0xdcd1f838), at 0xdd79ecc9
  [26] DefNewGeneration::collect(0x8115e20, 0x0, 0x0, 0x4, 0x0, 0x0), at 0xdd79e4e6
  [27] GenCollectedHeap::do_collection(0x8115d00, 0x0, 0x0, 0x4, 0x0, 0x0, 0x1,
0xc500f85c), at 0xdd79dad0
  [28] TwoGenerationCollectorPolicy::satisfy_failed_allocation(), at 0xdd79d481
  [29] GenCollectedHeap::satisfy_failed_allocation(0x8115d00, 0x4, 0x0, 0x0,
0xc500f85c), at 0xdd79d30d
  [30] VM_GenCollectForAllocation::doit(0xc500f840), at 0xdd79d242
  [31] VM_Operation::evaluate(), at 0xdd77de9a
  [32] VMThread::evaluate_operation(0x8141398, 0xc500f840), at 0xdd77dd88
  [33] VMThread::loop(0x8141398), at 0xdd6fa1d1
  [34] VMThread::run(0x8141398), at 0xdd6f9ef8
  [35] _start(0x8141398), at 0xdd6f9a52
  [36] _thr_setup(0xdda60200), at 0xddb64a59
  [37] _lwp_start(), at 0xddb64ce0

The stack trace on jtg-e450.sfbay

  ---- called from signal handler with signal 11 (SIGSEGV) ------
  [10] DefNewGeneration::copy_to_survivor_space(0xd9910, 0xd9910, 0xef2d7148, 0x1,
0xfeef7f58, 0x12ba60), at 0xfebe1714
  [11] objArrayKlass::oop_oop_iterate_nv(0x14, 0xef2d7148, 0xfe57f808, 0xfeea6000,
0x10, 0xb), at 0xfed7a6d8
  [12] ContiguousSpace::oop_since_save_marks_iterate_nv(0xdb2a8, 0xfe57f808,
0xfeee8b9c, 0xfeea6000, 0x78e4, 0x7800), at 0xfedb43dc
  [13] OneContigSpaceCardGeneration::oop_since_save_marks_iterate_nv(0xdb1a0,
0xfe57f808, 0xef2a0000, 0xd98a8, 0xd9910, 0xfe57f808), at 0xfec07c2c
  [14] GenCollectedHeap::oop_since_save_marks_iterate(0xd97f0, 0x0, 0xfeee6be0,
0xfe57f808, 0x2, 0xd9838), at 0xfec00bec
  [15] DefNewGeneration::FastEvacuateFollowersClosure::do_void(0xfe57f7f0,
0xfeea6000, 0xf48646d8, 0xb, 0xd98a8, 0xfebdf9b8), at 0xfebdf9e0
  [16] ReferenceProcessor::process_discovered_reflist(0x147d88, 0xfebdf428,
0x111f78, 0x1, 0xdb554, 0xfeef540c), at 0xfe9f02b0
  [17] ReferenceProcessor::process_discovered_references(0x147d88, 0xfeee59b0,
0xfe9f0198, 0xfe57f7f0, 0xfeef5410, 0x0), at 0xfea760c4
  [18] DefNewGeneration::collect(0xd9910, 0xd97f0, 0x147d88, 0x0, 0xfeea6000,
0xd9990), at 0xfebe0d64
  [19] GenCollectedHeap::do_collection(0xd97f0, 0x0, 0xd9838, 0x4, 0x2, 0x0), at
0xfec001ac
  [20] TwoGenerationCollectorPolicy::satisfy_failed_allocation(0xd9658, 0x4, 0x0,
0x0, 0xebf7f054, 0xfeea6000), at 0xfebb9804
  [21] VM_GenCollectForAllocation::doit(0xebf7f038, 0x73, 0xfef00424, 0x148288,
0xfea748d0, 0x42a0c0), at 0xfedf5ff4
  [22] VM_Operation::evaluate(0xebf7f038, 0xdb670, 0x7f9381, 0x7ffc, 0xfeea6000,
0x111f70), at 0xfea7bfb4
  [23] VMThread::run(0xfeef3360, 0x111f70, 0xff270200, 0x112364, 0xfef002d4,
0xfef002d0), at 0xfeb2ce98
  [24] _start(0x148288, 0x5800, 0x5fbe, 0x443c, 0xfeea6000, 0x148450), at 0xfeaa4b84

###@###.### 2003-12-12