jdk_util_1 crash vmState=0x0005ff04

[pshipton]

https://openj9-jenkins.osuosl.org/job/Test_openjdk11_j9_sanity.openjdk_x86-64_linux_Release_testList_0/38 - 0.51
jdk_util_1

21:56:35  Unhandled exception
21:56:35  Type=Segmentation error vmState=0x0005ff04
21:56:35  J9Generic_Signal_Number=00000018 Signal_Number=0000000b Error_Value=00000000 Signal_Code=00000002
21:56:35  Handler1=00007FE470E3EB60 Handler2=00007FE4714BE3C0 InaccessibleAddress=00007FE401FBF058
21:56:35  RDI=00007FE401EFE0F0 RSI=0000000000000000 RAX=00007FE401FBEF70 RBX=00007FE400FBF000
21:56:35  RCX=000000000006309C RDX=00007FE401FBE960 R8=00000000FFFFFFF6 R9=0000000000000001
21:56:35  R10=000000000000000D R11=0000000000000000 R12=00007FE400FC7470 R13=00007FE401FBEA30
21:56:35  R14=0000000000000000 R15=0000000000000000
21:56:35  RIP=00007FE46B74DE1A GS=0000 FS=0000 RSP=00007FE4702ED000
21:56:35  EFlags=0000000000010246 CS=0033 RBP=00007FE401EFE0F0 ERR=0000000000000004
21:56:35  TRAPNO=000000000000000E OLDMASK=0000000000000000 CR2=00007FE401FBF058
21:56:35  xmm0=0000000000000000 (f: 0.000000, d: 0.000000e+00)
21:56:35  xmm1=00007fe400fc7470 (f: 16544880.000000, d: 6.947415e-310)
21:56:35  xmm2=00007fe3ee9101d0 (f: 4002480640.000000, d: 6.947400e-310)
21:56:35  xmm3=0000000000000000 (f: 0.000000, d: 0.000000e+00)
21:56:35  xmm4=00007fe40106e960 (f: 17230176.000000, d: 6.947415e-310)
21:56:35  xmm5=0000003000000020 (f: 32.000000, d: 1.018558e-312)
21:56:35  xmm6=00007fe400c4bad0 (f: 12892880.000000, d: 6.947415e-310)
21:56:35  xmm7=00007fe400c4b9d0 (f: 12892624.000000, d: 6.947415e-310)
21:56:35  xmm8=00007fe400c4b8d0 (f: 12892368.000000, d: 6.947415e-310)
21:56:35  xmm9=6969696969696969 (f: 1768515968.000000, d: 6.078578e+199)
21:56:35  xmm10=6969168d02858459 (f: 42304600.000000, d: 6.001153e+199)
21:56:35  xmm11=9999999999999999 (f: 2576980480.000000, d: -2.353437e-185)
21:56:35  xmm12=2020202020202020 (f: 538976256.000000, d: 6.013470e-154)
21:56:35  xmm13=000001380000013f (f: 319.000000, d: 6.620627e-312)
21:56:35  xmm14=0000000008001800 (f: 134223872.000000, d: 6.631540e-316)
21:56:35  xmm15=0000000000000000 (f: 0.000000, d: 0.000000e+00)
21:56:35  Module=/home/jenkins/workspace/Test_openjdk11_j9_sanity.openjdk_x86-64_linux_Release_testList_0/jdkbinary/j2sdk-image/lib/default/libj9jit29.so
21:56:35  Module_base_address=00007FE46B200000
21:56:35  
21:56:35  Method_being_compiled=com/sun/org/apache/xerces/internal/parsers/XML11Configuration.<init>(Lcom/sun/org/apache/xerces/internal/util/SymbolTable;Lcom/sun/org/apache/xerces/internal/xni/grammars/XMLGrammarPool;Lcom/sun/org/apache/xerces/internal/xni/parser/XMLComponentManager;)V
21:56:35  Target=2_90_20250309_162 (Linux 5.14.0-554.el9.x86_64)
21:56:35  CPU=amd64 (8 logical CPUs) (0x3d743b000 RAM)
21:56:35  ----------- Stack Backtrace -----------
21:56:35  _ZN2J93X8613TreeEvaluator19directCallEvaluatorEPN2TR4NodeEPNS2_13CodeGeneratorE+0x44a (0x00007FE46B74DE1A [libj9jit29.so+0x54de1a])
21:56:35  _ZN3OMR13CodeGenerator8evaluateEPN2TR4NodeE+0x44 (0x00007FE46B784D84 [libj9jit29.so+0x584d84])
21:56:35  _ZN3OMR3X8613TreeEvaluator16treetopEvaluatorEPN2TR4NodeEPNS2_13CodeGeneratorE+0x1d (0x00007FE46BBB1D4D [libj9jit29.so+0x9b1d4d])
21:56:35  _ZN3OMR13CodeGenerator8evaluateEPN2TR4NodeE+0x44 (0x00007FE46B784D84 [libj9jit29.so+0x584d84])
21:56:35  _ZN2J913CodeGenerator22doInstructionSelectionEv+0xde7 (0x00007FE46B33F3E7 [libj9jit29.so+0x13f3e7])
21:56:35  _ZN3OMR12CodeGenPhase32performInstructionSelectionPhaseEPN2TR13CodeGeneratorEPNS1_12CodeGenPhaseE+0x71 (0x00007FE46B793151 [libj9jit29.so+0x593151])
21:56:35  _ZN3OMR12CodeGenPhase10performAllEv+0xd6 (0x00007FE46B793D96 [libj9jit29.so+0x593d96])
21:56:35  _ZN3OMR13CodeGenerator12generateCodeEv+0x5a (0x00007FE46B78F42A [libj9jit29.so+0x58f42a])
21:56:35  _ZN3OMR11Compilation7compileEv+0xb66 (0x00007FE46B7BA2E6 [libj9jit29.so+0x5ba2e6])
21:56:35  _ZN2TR28CompilationInfoPerThreadBase7compileEP10J9VMThreadPNS_11CompilationEP17TR_ResolvedMethodR11TR_J9VMBaseP19TR_OptimizationPlanRKNS_16SegmentAllocatorE+0x4bf (0x00007FE46B37D44F [libj9jit29.so+0x17d44f])
21:56:35  _ZN2TR28CompilationInfoPerThreadBase14wrappedCompileEP13J9PortLibraryPv+0x381 (0x00007FE46B37E481 [libj9jit29.so+0x17e481])
21:56:35  omrsig_protect+0x239 (0x00007FE4714BF049 [libj9prt29.so+0x2a049])
21:56:35  _ZN2TR28CompilationInfoPerThreadBase7compileEP10J9VMThreadP21TR_MethodToBeCompiledRN2J917J9SegmentProviderE+0x385 (0x00007FE46B37BFE5 [libj9jit29.so+0x17bfe5])
21:56:35  _ZN2TR24CompilationInfoPerThread12processEntryER21TR_MethodToBeCompiledRN2J917J9SegmentProviderE+0x128 (0x00007FE46B37C308 [libj9jit29.so+0x17c308])
21:56:35  _ZN2TR24CompilationInfoPerThread14processEntriesEv+0x377 (0x00007FE46B37B247 [libj9jit29.so+0x17b247])
21:56:35  _ZN2TR24CompilationInfoPerThread3runEv+0x42 (0x00007FE46B37B5A2 [libj9jit29.so+0x17b5a2])
21:56:35  _Z30protectedCompilationThreadProcP13J9PortLibraryPN2TR24CompilationInfoPerThreadE+0x82 (0x00007FE46B37B652 [libj9jit29.so+0x17b652])
21:56:35  omrsig_protect+0x239 (0x00007FE4714BF049 [libj9prt29.so+0x2a049])
21:56:35  _Z21compilationThreadProcPv+0x17b (0x00007FE46B37BA1B [libj9jit29.so+0x17ba1b])
21:56:35  thread_wrapper+0x163 (0x00007FE4718503A3 [libj9thr29.so+0xb3a3])
21:56:35  start_thread+0x2d2 (0x00007FE47168A002 [libc.so.6+0x8a002])
21:56:35  __clone3+0x30 (0x00007FE47170F070 [libc.so.6+0x10f070])
21:56:35  ---------------------------------------

[pshipton]

@hzongaro this failure occurred in the 0.51 weekend testing.

[hzongaro]

@BradleyWood, may I ask you to look at this crash? It's listed a blocker for 0.51.

[pshipton]

Note it failed in the 0.51 release testing.

[BradleyWood]

Has this popped up anywhere else?

[BradleyWood]

So I think crash happens because node->getBlock() is null. I can't say why it happens in this method.

if (cg->getSupportsInlineStringHashCode() && !node->getBlock()->isCold())
  returnRegister = inlineStringHashCode(node, false, cg);

So crash happened at 0x00007FE46B74DE1A the disassembly from GDB suggests rax from node->getBlock() is null:

0x00007fe46b74de15 <+1093>:	call   0x7fe46b7eebf0 <_ZN3OMR4Node8getBlockEb>
0x00007fe46b74de1a <+1098>:	testb  $0x2,0xe8(%rax)

@vijaysun-omr Would calling cg->getCurrentBlock()->isCold() be more appropriate?

[vijaysun-omr]

Even though the node->getBlock() routine is part of the node API, it can only be called on BBStart and BBEnd nodes to get a valid answer. This is probably why you get the above crash.

Using cg->getCurrentBlock()->isCold() should work.

[pshipton]

https://openj9-jenkins.osuosl.org/job/Test_openjdk11_j9_sanity.openjdk_x86-64_linux_Nightly_testList_2/237
jdk_lang_j9_1

[hzongaro]

Fixes merged in main branch (#21332) and v0.51.0-release (#21344) branch.