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Trace/BPT trap: 5 #534

Open
mfikes opened this issue Aug 9, 2017 · 4 comments
Open

Trace/BPT trap: 5 #534

mfikes opened this issue Aug 9, 2017 · 4 comments

Comments

@mfikes
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mfikes commented Aug 9, 2017

Sometimes on master when using simple or whitespace optimizations.
@mfikes
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mfikes commented Nov 18, 2017 •
edited
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Here is a reliable way to reproduce:

planck -c andare-0.7.0.jar -O simple -e"(require 'cljs.core.async)"

@mfikes
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mfikes commented Nov 28, 2017 •
edited
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Example backtrace:

(lldb) bt
* thread #1: tid = 0xb9b2a, 0x00004e8d318eddcf, queue = 'com.apple.main-thread', stop reason = EXC_BREAKPOINT (code=EXC_I386_BPT, subcode=0x0)
  * frame #0: 0x00004e8d318eddcf
    frame #1: 0x00004e8d31713894
    frame #2: 0x00004e8d30afdbb2
    frame #3: 0x00004e8d32422167
    frame #4: 0x00004e8d3242e9cc
    frame #5: 0x00004e8d32b255d9
    frame #6: 0x00004e8d3242f8d1
    frame #7: 0x00004e8d329c647b
    frame #8: 0x00004e8d31c55c5f
    frame #9: 0x00004e8d3202c27d
    frame #10: 0x00004e8d32b13684
    frame #11: 0x00004e8d324c3a1f
    frame #12: 0x00004e8d32b13dfc
    frame #13: 0x00004e8d32b4d4f4
    frame #14: 0x00004e8d32cae89b
    frame #15: 0x00004e8d31ffa0f9
    frame #16: 0x00004e8d32b37a99
    frame #17: 0x00004e8d3158e487
    frame #18: 0x00004e8d317c7029
    frame #19: 0x00004e8d325eb4e7
    frame #20: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #21: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #22: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #23: 0x00004e8d32a8287d
    frame #24: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #25: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #26: 0x00007fff2ed400f1 JavaScriptCore`llint_entry + 28313
    frame #27: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #28: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #29: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #30: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #31: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #32: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #33: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #34: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #35: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #36: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #37: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #38: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #39: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #40: 0x00004e8d32a736f0
    frame #41: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #42: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #43: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #44: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #45: 0x00004e8d32a736f0
    frame #46: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #47: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #48: 0x00004e8d32a736f0
    frame #49: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #50: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #51: 0x00004e8d30d36bda
    frame #52: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #53: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #54: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #55: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #56: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #57: 0x00004e8d328f3fbd
    frame #58: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #59: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #60: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #61: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #62: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #63: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #64: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #65: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #66: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #67: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #68: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #69: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #70: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #71: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #72: 0x00004e8d328f3fbd
    frame #73: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #74: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #75: 0x00004e8d328f3fbd
    frame #76: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #77: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #78: 0x00004e8d328f3fbd
    frame #79: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #80: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #81: 0x00004e8d328f3fbd
    frame #82: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #83: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #84: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #85: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #86: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #87: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #88: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #89: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
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    frame #96: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #97: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #98: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #99: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #100: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #101: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #102: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #103: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #104: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #105: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #106: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #107: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #108: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #109: 0x00004e8d328f3fbd
    frame #110: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #111: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #112: 0x00004e8d328f3fbd
    frame #113: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #114: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #115: 0x00004e8d328f3fbd
    frame #116: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #117: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #118: 0x00004e8d328f3fbd
    frame #119: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #120: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #121: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #122: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #123: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #124: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #125: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #126: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #127: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #128: 0x00004e8d30d31a2f
    frame #129: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #130: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #131: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #132: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #133: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #134: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #135: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #136: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #137: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #138: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #139: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #140: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #141: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #142: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #143: 0x00004e8d30d36bda
    frame #144: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #145: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #146: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #147: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #148: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #149: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #150: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #151: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #152: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #153: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
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    frame #155: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #156: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #157: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #158: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #159: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #160: 0x00004e8d30d26c36
    frame #161: 0x00004e8d30d4c9fd
    frame #162: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #163: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #164: 0x00004e8d30d26c36
    frame #165: 0x00004e8d30d58fa0
    frame #166: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #167: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
    frame #168: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #169: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #170: 0x00004e8d30d31a2f
    frame #171: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #172: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #173: 0x00004e8d32687e9d
    frame #174: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
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    frame #179: 0x00007fff2ed3fceb JavaScriptCore`llint_entry + 27283
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    frame #191: 0x00004e8d32687e9d
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    frame #194: 0x00004e8d32687e9d
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    frame #197: 0x00004e8d32687e9d
    frame #198: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #199: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #200: 0x00004e8d32687e9d
    frame #201: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #202: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #203: 0x00004e8d32687e9d
    frame #204: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
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    frame #206: 0x00004e8d32687e9d
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    frame #211: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
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    frame #219: 0x00004e8d30d31a2f
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    frame #474: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #475: 0x00007fff2ed3fc79 JavaScriptCore`llint_entry + 27169
    frame #476: 0x00007fff2ed39070 JavaScriptCore`vmEntryToJavaScript + 304
    frame #477: 0x00007fff2ec165bf JavaScriptCore`JSC::JITCode::execute(JSC::VM*, JSC::ProtoCallFrame*) + 127
    frame #478: 0x00007fff2e4deb11 JavaScriptCore`JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 433
    frame #479: 0x00007fff2e81cbb2 JavaScriptCore`JSC::profiledCall(JSC::ExecState*, JSC::ProfilingReason, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 178
    frame #480: 0x00007fff2e4de85d JavaScriptCore`JSObjectCallAsFunction + 461
    frame #481: 0x00000001042b31c5 planck`evaluate_source + 629
    frame #482: 0x00000001042bf3fe planck`process_line + 846
    frame #483: 0x00000001042bf9ad planck`run_cmdline_loop + 877
    frame #484: 0x00000001042c021b planck`run_repl + 587
    frame #485: 0x00000001042be9f1 planck`main + 2529
    frame #486: 0x00007fff52a9b145 libdyld.dylib`start + 1
    frame #487: 0x00007fff52a9b145 libdyld.dylib`start + 1

You can see the breakpoint instruction:

(lldb) di -f -b
->  0x4e8d318eddec: 41 bb 9b 00 00 00  movl   $0x9b, %r11d
    0x4e8d318eddf2: cc                 int3   
    0x4e8d318eddf3: 41 8b 41 18        movl   0x18(%r9), %eax
    0x4e8d318eddf7: 85 c0              testl  %eax, %eax
    0x4e8d318eddf9: 0f 84 13 00 00 00  je     0x4e8d318ede12
    0x4e8d318eddff: 8d 78 e0           leal   -0x20(%rax), %edi
    0x4e8d318ede02: 48 f7 d8           negq   %rax
    0x4e8d318ede05: 41 89 79 18        movl   %edi, 0x18(%r9)

Speculation is that it is this line https://github.com/WebKit/webkit/blob/03128ced8a49d1bca72dc5dd1b573445b5d8a744/Source/JavaScriptCore/llint/LowLevelInterpreter.asm#L1810

@mfikes
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mfikes commented Nov 28, 2017

Isolated to a bug in FTL JIT. Disabling it works around the issue:

JSC_useFTLJIT=false planck -c andare-0.7.0.jar -O simple -e"(require 'cljs.core.async)"

@mfikes mfikes mentioned this issue Oct 7, 2018
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mfikes commented Apr 27, 2019

Updated simpler way of doing this test:

JSC_useFTLJIT=true plk -Sdeps '{:deps {andare {:mvn/version "0.7.0"}}}' --optimizations simple -e"(require 'cljs.core.async)"

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