Uploaded image for project: 'Core Server'
  1. Core Server
  2. SERVER-30943

Segmentation fault on attempt to access an invalidated BSON Object in JS scope

    XMLWordPrintable

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Critical - P2
    • Resolution: Fixed
    • Affects Version/s: 3.2.16
    • Fix Version/s: 3.2.17
    • Component/s: JavaScript
    • Labels:
      None
    • Backwards Compatibility:
      Fully Compatible
    • Operating System:
      ALL
    • Steps To Reproduce:
      Hide

      not sure, we have a worker type service, which do a lot of jobs periodically in the background, if we start it, the mongod will crash in a few minutes, if we do not start it, the mongod won't crash

      so I guess some operations the worker is doing triggered this bug, but it's quite difficult to narrow it down, we'll try, but at the same time, please help to analyze above logs

      Show
      not sure, we have a worker type service, which do a lot of jobs periodically in the background, if we start it, the mongod will crash in a few minutes, if we do not start it, the mongod won't crash so I guess some operations the worker is doing triggered this bug, but it's quite difficult to narrow it down, we'll try, but at the same time, please help to analyze above logs
    • Linked BF Score:
      0

      Description

      mongod crashed, with these logs:

      2017-09-05T02:56:26.201+0800 F -        [js] Invalid access at address: 0
      2017-09-05T02:56:26.211+0800 F -        [js] Got signal: 11 (Segmentation fault).
       
       0x1556b32 0x1555ad9 0x15564b7 0x7f2074522390 0x1a329c1 0x14c22a8 0x14cdeb3 0x14cfaa1 0x14c1d8c 0x14c2e77 0x14cd472 0x14c13d0 0x149f68d 0x14c8377 0x14c93d7 0x14900b6 0x1d00200 0x7f20745186ba 0x7f207424e3dd
      ----- BEGIN BACKTRACE -----
      {"backtrace":[{"b":"400000","o":"1156B32","s":"_ZN5mongo15printStackTraceERSo"},{"b":"400000","o":"1155AD9"},{"b":"400000","o":"11564B7"},{"b":"7F2074511000","o":"11390"},{"b":"400000","o":"16329C1","s":"_Z16JS_IdArrayLengthP9JSContextP9JSIdArray"},{"b":"400000","o":"10C22A8","s":"_ZN5mongo5mozjs13ObjectWrapper24WriteFieldRecursionFrameC2EP9JSContextP8JSObjectPNS_14BSONObjBuilderENS_10StringDataE"},{"b":"400000","o":"10CDEB3","s":"_ZN5mongo5mozjs11ValueWriter12_writeObjectEPNS_14BSONObjBuilderENS_10StringDataEPNS0_13LifetimeStackINS0_13ObjectWrapper24WriteFieldRecursionFrameELm150EEE"},{"b":"400000","o":"10CFAA1","s":"_ZN5mongo5mozjs11ValueWriter9writeThisEPNS_14BSONObjBuilderENS_10StringDataEPNS0_13LifetimeStackINS0_13ObjectWrapper24WriteFieldRecursionFrameELm150EEE"},{"b":"400000","o":"10C1D8C","s":"_ZN5mongo5mozjs13ObjectWrapper11_writeFieldEPNS_14BSONObjBuilderENS1_3KeyEPNS0_13LifetimeStackINS1_24WriteFieldRecursionFrameELm150EEEPNS_7BSONObjE"},{"b":"400000","o":"10C2E77","s":"_ZN5mongo5mozjs13ObjectWrapper6toBSONEv"},{"b":"400000","o":"10CD472","s":"_ZN5mongo5mozjs11ValueWriter6toBSONEv"},{"b":"400000","o":"10C13D0","s":"_ZN5mongo5mozjs13ObjectWrapper9getObjectENS1_3KeyE"},{"b":"400000","o":"109F68D","s":"_ZN5mongo5mozjs14MozJSImplScope9getObjectEPKc"},{"b":"400000","o":"10C8377"},{"b":"400000","o":"10C93D7","s":"_ZN5mongo5mozjs15MozJSProxyScope10implThreadEPv"},{"b":"400000","o":"10900B6","s":"_ZN4nspr6Thread13ThreadRoutineEPv"},{"b":"400000","o":"1900200"},{"b":"7F2074511000","o":"76BA"},{"b":"7F2074147000","o":"1073DD","s":"clone"}],"processInfo":{ "mongodbVersion" : "3.2.16", "gitVersion" : "056bf45128114e44c5358c7a8776fb582363e094", "compiledModules" : [], "uname" : { "sysname" : "Linux", "release" : "4.4.0-85-generic", "version" : "#108-Ubuntu SMP Mon Jul 3 17:23:59 UTC 2017", "machine" : "x86_64" }, "somap" : [ { "elfType" : 2, "b" : "400000", "buildId" : "B4C77D1B42936B23E28A2739927CB25274DB2D96" }, { "b" : "7FFE3F9B3000", "elfType" : 3, "buildId" : "D15ADFEB8025A8E672717AE54C85898EEA5C9A89" }, { "b" : "7F207549D000", "path" : "/lib/x86_64-linux-gnu/libssl.so.1.0.0", "elfType" : 3, "buildId" : "675F454AD6FD0B6CA2E41127C7B98079DA37F7B6" }, { "b" : "7F2075059000", "path" : "/lib/x86_64-linux-gnu/libcrypto.so.1.0.0", "elfType" : 3, "buildId" : "2DA08A7E5BF610030DD33B70DB951399626B7496" }, { "b" : "7F2074E51000", "path" : "/lib/x86_64-linux-gnu/librt.so.1", "elfType" : 3, "buildId" : "F951C1E0765FCAE48F82CAFE35D1ADD36D6C9AF9" }, { "b" : "7F2074C4D000", "path" : "/lib/x86_64-linux-gnu/libdl.so.2", "elfType" : 3, "buildId" : "0FC788F0861846257B5F1773FBD438E95DFC1032" }, { "b" : "7F2074944000", "path" : "/lib/x86_64-linux-gnu/libm.so.6", "elfType" : 3, "buildId" : "FF7A33D389E756CA381A8189291A968EA5E1F4F8" }, { "b" : "7F207472E000", "path" : "/lib/x86_64-linux-gnu/libgcc_s.so.1", "elfType" : 3, "buildId" : "68220AE2C65D65C1B6AAA12FA6765A6EC2F5F434" }, { "b" : "7F2074511000", "path" : "/lib/x86_64-linux-gnu/libpthread.so.0", "elfType" : 3, "buildId" : "27F189EF8DB8C3734C6A678E6EF3CB0B206D58B2" }, { "b" : "7F2074147000", "path" : "/lib/x86_64-linux-gnu/libc.so.6", "elfType" : 3, "buildId" : "088A6E00A1814622219F346B41E775B8DD46C518" }, { "b" : "7F2075706000", "path" : "/lib64/ld-linux-x86-64.so.2", "elfType" : 3, "buildId" : "9157F205547F0EB588E2AB1F2F120B74253A43EA" } ] }}
       mongod(_ZN5mongo15printStackTraceERSo+0x32) [0x1556b32]
       mongod(+0x1155AD9) [0x1555ad9]
       mongod(+0x11564B7) [0x15564b7]
       libpthread.so.0(+0x11390) [0x7f2074522390]
       mongod(_Z16JS_IdArrayLengthP9JSContextP9JSIdArray+0x1) [0x1a329c1]
       mongod(_ZN5mongo5mozjs13ObjectWrapper24WriteFieldRecursionFrameC2EP9JSContextP8JSObjectPNS_14BSONObjBuilderENS_10StringDataE+0x388) [0x14c22a8]
       mongod(_ZN5mongo5mozjs11ValueWriter12_writeObjectEPNS_14BSONObjBuilderENS_10StringDataEPNS0_13LifetimeStackINS0_13ObjectWrapper24WriteFieldRecursionFrameELm150EEE+0x1F3) [0x14cdeb3]
       mongod(_ZN5mongo5mozjs11ValueWriter9writeThisEPNS_14BSONObjBuilderENS_10StringDataEPNS0_13LifetimeStackINS0_13ObjectWrapper24WriteFieldRecursionFrameELm150EEE+0x591) [0x14cfaa1]
       mongod(_ZN5mongo5mozjs13ObjectWrapper11_writeFieldEPNS_14BSONObjBuilderENS1_3KeyEPNS0_13LifetimeStackINS1_24WriteFieldRecursionFrameELm150EEEPNS_7BSONObjE+0x10C) [0x14c1d8c]
       mongod(_ZN5mongo5mozjs13ObjectWrapper6toBSONEv+0x357) [0x14c2e77]
       mongod(_ZN5mongo5mozjs11ValueWriter6toBSONEv+0x92) [0x14cd472]
       mongod(_ZN5mongo5mozjs13ObjectWrapper9getObjectENS1_3KeyE+0x70) [0x14c13d0]
       mongod(_ZN5mongo5mozjs14MozJSImplScope9getObjectEPKc+0x7D) [0x149f68d]
       mongod(+0x10C8377) [0x14c8377]
       mongod(_ZN5mongo5mozjs15MozJSProxyScope10implThreadEPv+0xE7) [0x14c93d7]
       mongod(_ZN4nspr6Thread13ThreadRoutineEPv+0x26) [0x14900b6]
       mongod(+0x1900200) [0x1d00200]
       libpthread.so.0(+0x76BA) [0x7f20745186ba]
       libc.so.6(clone+0x6D) [0x7f207424e3dd]
      -----  END BACKTRACE  -----
      2017-09-05T02:56:26.211+0800 F -        [js] /proc/self/maps:
      00400000-021fc000 r-xp 00000000 fd:01 409776                             /usr/bin/mongod
      2017-09-05T02:56:26.211+0800 F -        [js] 021fc000-022ab000 rw-p 01dfc000 fd:01 409776                             /usr/bin/mongod
      2017-09-05T02:56:26.211+0800 F -        [js] 022ab000-02317000 rw-p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 0404a000-854e4000 rw-p 00000000 00:00 0                                  [heap]
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20441e4000-7f20441e5000 ---p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20441e5000-7f20442e5000 rw-p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20442e5000-7f20442e6000 ---p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20442e6000-7f20443e6000 rw-p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20443e6000-7f20443e7000 ---p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20443e7000-7f20444e7000 rw-p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20444e7000-7f20444e8000 ---p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20444e8000-7f20445e8000 rw-p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20445e8000-7f20445e9000 ---p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20445e9000-7f20446e9000 rw-p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20446e9000-7f20446ea000 ---p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20446ea000-7f20447ea000 rw-p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20447ea000-7f20447eb000 ---p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20447eb000-7f20448eb000 rw-p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20448eb000-7f20448ec000 ---p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20448ec000-7f20449ec000 rw-p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20449ec000-7f20449ed000 ---p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20449ed000-7f2044aed000 rw-p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f2044aed000-7f2044aee000 ---p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f2044aee000-7f2044bee000 rw-p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f2044bee000-7f2044bef000 ---p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f2044bef000-7f2044cef000 rw-p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f2044cef000-7f2044cf0000 ---p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f2044cf0000-7f2044df0000 rw-p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f2044df0000-7f2044df1000 ---p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f2044df1000-7f2044ef1000 rw-p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f2044ef1000-7f2044ef2000 ---p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f2044ef2000-7f2044ff2000 rw-p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f2044ff2000-7f2044ff3000 ---p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f2044ff3000-7f20450f3000 rw-p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20450f3000-7f20450f4000 ---p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20450f4000-7f20451f4000 rw-p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20451f4000-7f20451f5000 ---p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20451f5000-7f20452f5000 rw-p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20452f5000-7f20452f6000 ---p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20452f6000-7f20453f6000 rw-p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20453f6000-7f20453f7000 ---p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20453f7000-7f20454f7000 rw-p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20454f7000-7f20454f8000 ---p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20454f8000-7f20455f8000 rw-p 00000000 00:00 0
      2017-09-05T02:56:26.211+0800 F -        [js] 7f20455f8000-7f20455f9000 ---p 00000000 00:00 0
      

        Attachments

          Issue Links

            Activity

              People

              • Votes:
                0 Vote for this issue
                Watchers:
                6 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: