[HARMONY-5104] [drlvm] Assertion during root enumeration

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Component/s: DRLVM
• Assignee: Gregory Shimansky
• Reporter: Pavel Afremov
• Created: 09/Nov/07 19:21
• Updated: 28/Dec/07 13:27
• Resolved: 12/Nov/07 15:22

Description

During evaluating HARMONY-2772 assertion on following stack was reproduced:

#8 0x00002aaaaac0c39c in check_ref (ref=0x2aaabe800160)
at .../vm/vmcore/src/gc/root_set_enum_common.cpp:164
#9 0x00002aaaaac0c57b in vm_enumerate_root_reference (ref=0x2aaabe800160, is_pinned=0)
at .../vm/vmcore/src/gc/root_set_enum_common.cpp:178
#10 0x00002aaaaac0c5f7 in vm_enumerate_jlc (c=0x2aaabe800110, b_weak=false)
at .../vm/vmcore/src/gc/root_set_enum_common.cpp:77
#11 0x00002aaaaac0d1a1 in vm_enumerate_static_fields ()
at .../vm/vmcore/src/gc/root_set_enum_common.cpp:132
#12 0x00002aaaaac0d48d in vm_enumerate_root_set_global_refs ()
at .../vm/vmcore/src/gc/root_set_enum_common.cpp:245
#13 0x00002aaaaac144b8 in stop_the_world_root_set_enumeration ()
at .../vm/vmcore/src/gc/stop_the_world_root_set_enum.cpp:131
#14 0x00002aaaaac14578 in vm_enumerate_root_set_all_threads ()
at .../vm/vmcore/src/gc/stop_the_world_root_set_enum.cpp:146
#15 0x00002aaaad51a004 in gc_reclaim_heap (gc=0x56c0a0, gc_cause=1)
at .../vm/gc_gen/src/common/gc_common.cpp:331
#16 0x00002aaaad5049f5 in fspace_alloc (size=528, allocator=0xf91a90)
at .../vm/gc_gen/src/trace_forward/fspace_alloc.cpp:79
#17 0x00002aaaad522f73 in nos_alloc (size=528, allocator=0xf91a90)
at .../vm/gc_gen/src/gen/gen.cpp:283
#18 0x00002aaaad53bc1b in gc_alloc (size=528, ah=1272, unused_gc_tls=0x2aaabee28728)
at .../vm/gc_gen/src/thread/mutator_alloc.cpp:91
#19 0x00002aaaaac21fc8 in vm_new_vector_using_vtable_and_thread_pointer (length=512, vector_handle=1272,
tp=0x2aaabee28728) at .../vm/vmcore/src/object/vm_arrays.cpp:219
#20 0x00002aaaaab90fa3 in vm_rt_new_vector_using_vtable_and_thread_pointer (length=512, vector_handle=1272,
tp=0x2aaabee28728)
at .../vm/vmcore/src/jit/jit_runtime_support.cpp:113

The source of assertion is in changing classloader map, which iterated during GC, in suspend enable mode.

Issue Links

• relates to: HARMONY-2772 [drlvm][gc] test stress.Mix intermittently failed on the em64t platform