App Extension のスタックトレース情報からクラッシュを解析/集計する / Analyzing app extension's stack trace

配信アプリで使用している Broadcast Extension 上で発生したクラッシュの詳細について、クラッシュ発生時のスタックトレースを取得して解析し、複数のクラッシュの修正に繋げた話。

Transcript

1. "QQ&YUFOTJPOͷελοΫτϨʔε৘ใ͔Β
   ΫϥογϡΛղੳूܭ͢Δ
   /BSVLJ$IJHJSB
   !@OBSV@KQO
   J04%$
   

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2. ϛϥςΟϒΞϓϦͷ͝঺հ
   

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3. ࠓճͷ࿩ͷഎܠ
   

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4. &
   ΞϓϦຊମ #SPBEDBTU&YUFOTJPO
   ϛϥςΟϒͷJ04ΞϓϦ͸
   #SPBEDBTU&YUFOTJPOΛར༻ͯ͠഑৴ॲཧΛ͍ͯ͠Δ
   

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5. &
   ΞϓϦຊମ #SPBEDBTU&YUFOTJPO
   ΞϓϦຊମͱ#SPBEDBTU&YUFOTJPO͸ผͷϓϩηεͱͯ͠ಈ࡞͍ͯͯ͠ɺ
   ྫ͑͹ͲͪΒ͔͕Ϋϥογϡͯ͠΋ɺ΋͏Ұํ͸ಈ͖ଓ͚͍ͯͨΓ͢Δ
   💥
   ഑৴ͯ͠ΔΑ
   Ϋϥογϡͨ͠
   

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6. &
   ΞϓϦຊମ #SPBEDBTU&YUFOTJPO
   Ϋϥογϡ͕ൃੜͨ࣌͠ɺ
   ͦΕͧΕͰߦ͍ͬͯΔॲཧ΋ҟͳ͍ͬͯΔ
   💥 💥
   

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7. ΞϓϦຊମ
   ΞϓϦຊମ͸Ϋϥογϡ৘ใΛ'JSFCBTF$SBTIMZUJDTʹૹ৴͍ͯͯ͠ɺ
   'JSFCBTFͷίϯιʔϧ্ͰΫϥογϡΛ֬ೝͯ͠ରԠ͍ͯ͠Δ
   💥
   📝
   

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8. ϩά༻αʔόʔ
   &
   #SPBEDBTU&YUFOTJPO
   #SPBEDBTU&YUFOTJPOʹ͸'JSFCBTF$SBTIMZUJDT͸૊Έࠐ·Ε͓ͯΒͣɺ
   ಠࣗʹΫϥογϡ࣌ͷ৘ใΛऔಘ͍ͯ͠Δ
   💥
   📝
   5ISFBEDBMM4UBDL4ZNCPMT
   

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9. ϩά༻αʔόʔ
   &
   #SPBEDBTU&YUFOTJPO
   ݩʑɺϩά͸Ϋϥογϡͷൃੜස౓Λ೺Ѳ͢ΔͨΊʹ࢖༻͞Ε͍ͯͯɺ
   औಘ͞Ε͍ͯΔ৘ใΛݟ͚ͨͩͰ͸Ϋϥογϡͷৄࡉ͸෼͔Βͳ͍
   💥
   📝
   5ISFBEDBMM4UBDL4ZNCPMT
   

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10. ˠ#SPBEDBTU&YUFOTJPOͷΫϥογϡͷमਖ਼͸
    ΞϓϦຊମͱൺֱͯ͠ɺܦݧʹґΔͱ͜Ζ͕େ͖͔ͬͨ
    ݩʑɺϩά͸Ϋϥογϡͷൃੜස౓Λ೺Ѳ͢ΔͨΊʹ࢖༻͞Ε͍ͯͯɺ
    औಘ͞Ε͍ͯΔ৘ใΛݟ͚ͨͩͰ͸Ϋϥογϡͷৄࡉ͸෼͔Βͳ͍
    

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11. &
    ΞϓϦຊମ #SPBEDBTU&YUFOTJPO
    ೥ͷ͸͡ΊɺʮΠϠϗϯ഑৴ʯͱݺ͹Ε͍ͯΔػೳͷվमʹ൐ͬͯ
    #SPBEDBTU&YUFOTJPOͰ৽ͨͳΫϥογϡ͕ൃੜ͢Δ͜ͱ͕ͳΜͱͳ͘෼͔͍ͬͯͨ
    💥
    

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12. ˠͲ͏͍͏಺༰ͷΫϥογϡ͕ɺ
    Ͳͷ͘Β͍ͷׂ߹Ͱൃੜ͍ͯ͠Δ͔ௐ΂Δखஈ͕ཉ͔ͬͨ͠
    ೥ͷ͸͡ΊɺʮΠϠϗϯ഑৴ʯͱݺ͹Ε͍ͯΔػೳͷվमʹ൐ͬͯ
    #SPBEDBTU&YUFOTJPOͰ৽ͨͳΫϥογϡ͕ൃੜ͢Δ͜ͱ͕ͳΜͱͳ͘෼͔͍ͬͯͨ
    

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13. #SPBEDBTU&YUFOTJPOʹ΋'JSFCBTF$SBTIMZUJDTΛ૊ΈࠐΉ
    ˠͦ΋ͦ΋Ͱ͖Δͷ͔஌Βͳ͍
    ΫϥογϡΛௐ΂ͯΔͷʹ৽͍͠໰୊͕ग़ͨΒා͍
    Broadcast Extension ͸σϦέʔτͳͷͰۃྗ৮Γͨ͘ͳ͍
    

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14. 9DPEFͷ0SHBOJ[FSΛཔΔ
    ˠ಺༰Λཧղ͢Δͷʹܦݧ͕ඞཁͩͬͨ
    ͨͱ͑͹4IBSFEʹEP0VUQVU1SPDFTTͱ͍͏ϝιου͸ଘࡏ͠ͳ͍
    

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15. #SPBEDBTU&YUFOTJPOͰϩάͱͯ͠औಘ͍ͯ͠Δ
    ελοΫτϨʔε DBMM4UBDL4ZNCPMT
    ͷ৘ใΛ׆༻͢Δ
    ˠͪΐ͏Ͳ6OJUZ'SBNFXPSLͷΫϥογϡ΋ௐ͍ࠪͯͯ͠
    E4:.·ΘΓΛௐ΂͍ͯͨ͜ͱ΋͋ΓɺͰ͖ͦ͏ͳؾ͕ͨ͠
    Mirrativ tech blog - ʲiOSʳUnity Framework ͱΫϥογϡղੳͷऔΓ૊Έ
    

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16. "QQ&YUFOTJPOͷελοΫτϨʔε৘ใ͔Β
    ΫϥογϡΛղੳूܭ͢Δ
    Ϋϥογϡ࣌ͷελοΫτϨʔεΛऔಘ͢Δ
    E4:.ϑΝΠϧΛͱͬͯ͘Δ
    BUPTίϚϯυͰελοΫτϨʔεΛղੳ͢Δ
    ղੳΛࣗಈԽͯ͠ूܭ͢Δ
    ΫϥογϡΛमਖ਼͢Δ
    ඞཁͳࡐྉΛଗ͑Δ
    खಈͰղੳ͢Δ
    ࣗಈͰղੳ͢Δ
    मਖ਼͢Δ
    

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17. Ϋϥογϡ࣌ͷελοΫτϨʔεΛऔಘ͢Δ
    

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18. Ϋϥογϡݕ஌ͱϋϯυϦϯά
    class func setup() {
    
    
    // ྫ֎ͷݕ஌ͱ࣮ߦ͢Δؔ਺ͷࢦఆ
    
    
    NSSetUncaughtExceptionHandler(exceptionHandler)
    
    
    // γάφϧͷݕ஌ͱ࣮ߦ͢Δؔ਺ͷࢦఆ
    
    
    for sigcontext in [SIGABRT, SIGILL, SIGSEGV, SIGFPE, SIGBUS, SIGPIPE, SIGTRAP] {
    
    
    signal(sigcontext, signalHandler)
    
    
    }
    
    
    }
    
    
    private static let exceptionHandler: @convention(c) (NSException) -> () = { exeption in
    
    
    handleSignalException(exeption: exeption)
    
    
    }
    
    
    private static let signalHandler: @convention(c) (Int32) -> () = { signal in
    
    
    handleSignalException()
    
    
    }
    https://stackover
    fl
    ow.com/questions/36325140/how-to-catch-a-swift-crash-and-do-some-logging
    

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19. ίʔϧελοΫͷऔಘ
    let callstack = exception.callStackSymbols.joined(separator: “\n”)
    
    
    // ΋͘͠͸
    
    
    let callstack = Thread.callStackSymbols.joined(separator: “\n”)
    

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20. ίʔϧελοΫͷऔಘ
    let callstack = exception.callStackSymbols.joined(separator: “\n”)
    
    
    // ΋͘͠͸
    
    
    let callstack = Thread.callStackSymbols.joined(separator: “\n”)
    0 broadcast-upload 0x000000010502eaf8 broadcast-upload + 223992
    
    
    1 libsystem_platform.dylib 0x00000001e3b9c29c 987D48D5-3CAA-34D7-9141-C0BD6E2351E8 + 21148
    
    
    2 broadcast-upload 0x0000000105106224 broadcast-upload + 1106468
    
    
    3 broadcast-upload 0x0000000105103604 broadcast-upload + 1095172
    
    
    4 Foundation 0x00000001991eb438 __NSFireTimer + 104
    
    
    5 CoreFoundation 0x0000000197d911d4 338F58B1-9B75-38A0-B908-E2574AB1D39A + 672212
    
    
    6 CoreFoundation 0x0000000197d90dd0 338F58B1-9B75-38A0-B908-E2574AB1D39A + 671184
    
    
    7 CoreFoundation 0x0000000197d90220 338F58B1-9B75-38A0-B908-E2574AB1D39A + 668192
    
    
    8 CoreFoundation 0x0000000197d89f8c 338F58B1-9B75-38A0-B908-E2574AB1D39A + 642956
    
    
    …
    ͜ͷίʔϧελοΫͷ৘ใΛղੳͯ͠ɺϓϩάϥϜͷ࣮ߦߦ਺ͳͲΛಛఆ͍ͨ͠
    

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21. E4:.ϑΝΠϧΛͱͬͯ͘Δ
    

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22. "QQ4UPSF$POOFDU͔ΒE4:.ϑΝΠϧΛͱͬͯ͘Δ
    ͜ͷE4:.ϑΝΠϧ͸ͦΕͧΕ͕֤λʔήοτϥΠϒϥϦʹରԠ͍ͯ͠Δ
    App Store Connect
    

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23. E4:.ϑΝΠϧ͕ͲͷλʔήοτϥΠϒϥϦʹରԠ͍ͯ͠Δ͔ௐ΂Δ
    Mirrativ tech blog - ʲiOSʳUnity Framework ͱΫϥογϡղੳͷऔΓ૊Έ
    files=`ls "$1"`
    
    
    for uuid in ${files[@]}; do
    
    
    module=`ls "$1/${uuid}/Contents/Resources/DWARF/"`
    
    
    echo "${uuid:0:8}: ${module}"
    
    
    done
    fi
    OE@ETZNTI
    

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24. Mirrativ tech blog - ʲiOSʳUnity Framework ͱΫϥογϡղੳͷऔΓ૊Έ
    $ ./find_dsym.sh /Users/naruki.chigira/Desktop/appDsyms
    
    
    2d4dd1c9: widget
    
    
    310ef0bf: broadcast-upload
    
    
    6d82e920: WebRTC
    
    
    7cc5d65f: UnityFramework
    
    
    b11f4f4f: Shared
    
    
    de357eed: mirrativ
    
    
    …
    ֤λʔήοτϥΠϒϥϦʹରԠ͢ΔE4:.͕؆୯ʹ୳ͤΔΑ͏ʹͳͬͨ
    E4:.ϑΝΠϧ͕ͲͷλʔήοτϥΠϒϥϦʹରԠ͍ͯ͠Δ͔ௐ΂Δ
    

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25. BUPTίϚϯυͰελοΫτϨʔεΛղੳ͢Δ
    

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26. BUPTͷجຊతͳ࢖͍ํΛ஌Δ
    $ man atos
    
    
    atos(1) BSD General Commands Manual atos(1)
    
    
    NAME
    
    
    atos -- convert numeric addresses to symbols of binary images or processes
    
    
    SYNOPSIS
    
    
    atos [-o ] [-p | ] [-arch
    architecture] [-l ] [-s ] [-printHeader] [-fullPath] [-f input-file>] [ …]
    
    
    …
    NBOίϚϯυͰ֬ೝͯ͠ΈΔ
    atos [-o ] [-arch architecture] [-l ] [ …]
    ࠓճͷΫϥογϡղੳͷࡍʹඞཁͳύϥϝʔλ
    

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27. BUPTʹ౉͢ύϥϝʔλE4:.ϑΝΠϧ
    atos [-o ] [-arch architecture] [-l ] [ …]
    Ϋϥογϡղੳͷࡍʹඞཁͳύϥϝʔλ
    E4:.ϑΝΠϧͷύε த਎
    
    0 broadcast-upload 0x000000010502eaf8 broadcast-upload + 223992
    ./appDsyms/310ef0bf-51fa-3535-8078-3fa06c470774.dSYM/Contents/Resources/DWARF/broadcast-upload
    

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28. BUPTʹ౉͢ύϥϝʔλΞʔΩςΫνϟ
    atos [-o ] [-arch architecture] [-l ] [ …]
    Ϋϥογϡղੳͷࡍʹඞཁͳύϥϝʔλ
    Ϋϥογϡ͕ൃੜͨ͠୺຤ͷ$16ΞʔΩςΫνϟ
    BSN BSNF
    

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29. ɾΞʔΩςΫνϟΛऔಘ͢ΔͨΊͷ4XJGUͷίʔυ
    IUUQTHJTUHJUIVCDPNOBSVKQOBEEEDBBCFCEFC
    fi
    MFEFWJDFTXJGU
    ɾJ1IPOF ͷΑ͏ͳϞσϧ໊͔ΒΞʔΩςΫνϟΛऔಘ͢ΔͨΊͷTRM
    IUUQTHJTUHJUIVCDPNOBSVKQOGGFCEEDBDEBD
    fi
    MFEFWJDFTRM
    BUPTʹ౉͢ύϥϝʔλΞʔΩςΫνϟ
    

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30. BUPTʹ౉͢ύϥϝʔλελοΫτϨʔεͷΞυϨε
    atos [-o ] [-arch architecture] [-l ] [ …]
    Ϋϥογϡղੳͷࡍʹඞཁͳύϥϝʔλ
    -l 0x104ff8000 0x10502eaf8
    

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31. atos [-o ] [-arch architecture] [-l ] [ …]
    Ϋϥογϡղੳͷࡍʹඞཁͳύϥϝʔλ
    -l 0x104ff8000 0x10502eaf8
    0 broadcast-upload 0x000000010502eaf8 broadcast-upload + 223992
    " #
    https://stackover
    fl
    ow.com/questions/11747802/symbolicating-stack-trace-without-crash
    "
    "#
    BUPTʹ౉͢ύϥϝʔλελοΫτϨʔεͷΞυϨε
    

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32. atos [-o ] [-arch architecture] [-l ] [ …]
    Ϋϥογϡղੳͷࡍʹඞཁͳύϥϝʔλ
    -l 0x104ff8000 0x10502eaf8
    0 broadcast-upload 0x000000010502eaf8 broadcast-upload + 223992
    " #
    https://stackover
    fl
    ow.com/questions/11747802/symbolicating-stack-trace-without-crash
    "#
    BUPTʹ౉͢ύϥϝʔλελοΫτϨʔεͷΞυϨε
    "0x" + String(UInt64("10502eaf8", radix: 16)! - UInt64("223992", radix: 10)!, radix: 16)
    

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33. $ atos -o {path_to_dsym} -arch arm64e -l 0x104ff8000 0x10502eaf8
    0 broadcast-upload 0x000000010502eaf8 broadcast-upload + 223992
    https://stackover
    fl
    ow.com/questions/11747802/symbolicating-stack-trace-without-crash
    ελοΫτϨʔεΛղੳ͢Δ
    closure #1 in variable initialization expression of static AnalyticsManager.recieveSignal
    (in broadcast-upload) (AnalyticsManager+Extension.swift:22)
    🎉
    

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34. $ atos -o {path_to_dsym} -arch arm64e -l 0x104ff8000 0x105106224 0x105103604
    2 broadcast-upload 0x0000000105106224 broadcast-upload + 1106468
    
    
    3 broadcast-upload 0x0000000105103604 broadcast-upload + 1095172
    https://stackover
    fl
    ow.com/questions/11747802/symbolicating-stack-trace-without-crash
    ελοΫτϨʔεΛղੳ͢Δ
    specialized Stream.on(timer:) (in broadcast-upload) (Stream.swift:164)
    
    
    @objc Stream.on(timer:) (in broadcast-upload) (:0)
    🎉
    

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35. $ atos -o {path_to_dsym} -arch arm64e -l 0x104ff8000 0x10502eaf8
    ࣮༻্ͷ՝୊
    ɾE4:.ϑΝΠϧͷࢦఆ΍ΞυϨεͷܭࢉ͕खؒ
    ɾ࣮ߦʹ͕͔͔࣌ؒΔ
    ɹɾUJNFίϚϯυͰܭଌ͢Δͱ()[.BD#PPL1SPͰ
    ˠख࡞ۀͰ͸ղੳͰ͖ͳ͍͠ɺେྔͷϩάΛղੳ͢Δʹ͸Ωϟογϡ
    తͳ࢓૊Έ͕ඞཁ
    

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36. ղੳΛࣗಈԽͯ͠ूܭ͢Δ
    

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37. ղੳ༻ΞϓϦʹΑΔࣗಈԽʢ݅෼ͷΫϥογϡղੳʣ
    

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38. ूܭ݁Ռͷྫ
    ൃੜճ਺ ղੳࡁΈͷελοΫτϨʔε
    ͜͜·Ͱ͘Ε͹֤Ϋϥογϡͷ಺༰ͱӨڹͷେ͖͕͞Ұ໨Ͱ෼͔Δ
    

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39. ΫϥογϡΛमਖ਼͢Δ
    

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40. Ϋϥογϡͷमਖ਼
    ৄࡉ͸লུʜ
    ɾ഑৴தʹ4JSJΛىಈ͢ΔͱɺԻ੠σʔλͷྲྀΕ͕ෆنଇʹͳΔ
    ɾ഑৴தʹଞͷ௨࿩ΞϓϦͰ௨࿩Λ͢Δͱɺ૝ఆ֎ͷνϟωϧ਺Λ࣋ͬ
    ͨԻ੠σʔλ͕ྲྀΕͯ͘Δ
    ͳͲ
    

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41. Ϋϥογϡमਖ਼ޙͷΫϥογϡ཰ͷվળ
    मਖ਼൛ͷϦϦʔε೔
    Ϋϥογϡͷൃੜ਺Λ
    ໿ݮΒ͢͜ͱ͕Ͱ͖ͨʂ
    

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42. ·ͱΊ
    ෭࣍తʹಘΒΕͨ΋ͷ
    ɾΫϥογϡͷৄࡉͱ಺༁͕؆୯ʹ෼͔ΔΑ͏ʹͳͬͨ͜ͱͰɺ
    ɹमਖ਼Λ͢ΔࡍͷϝϦοτ΍Өڹྗͷࣄલͷઆ໌͕͠΍͘͢ͳͬͨ
    ɾܦݧ͕ͳ͍ͱཧղͰ͖ͳ͔ͬͨྖҬͷղ૾౓্͕͕Γɺ
    ɹଐਓੑΛݮΒ͢͜ͱʹܨ͕ͬͨ
    ɾελοΫτϨʔεͱE4:.͔ΒΫϥογϡͷৄࡉ͕ղੳͰ͖ͯɺ
    ɹΫϥογϡͷղফʹܨ͕ͬͨ
    

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43. ͓·͚
    DBMM4UBDL4ZNCPMT͔ΒऔಘͰ͖ΔจࣈྻΛύʔε͢ΔͨΊͷϥΠϒϥϦ
    IUUQTHJUIVCDPNOBSVKQO$BMM4UBDL4ZNCPMT
    

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44. ͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ
    

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