# mongod -version
db version v3.2.6
git version: 05552b562c7a0b3143a729aaa0838e558dc49b25
OpenSSL version: OpenSSL 1.0.2d 9 Jul 2015
allocator: tcmalloc
modules: none
build environment:
    distmod: ubuntu1404
    distarch: x86_64
    target_arch: x86_64

2016-05-18T20:48:18.627+0200 I COMMAND  [conn813] getmore local.oplog.rs query: { ns: { $regex: "^blah\." }, $or: [ { op: { $in: [ "i", "u", "d" ] } }, { op: "c", o.drop: { $exists: true } }, { op: "c", o.dropDatabase: 1 } ], ts: { $gt: Timestamp 1463580273000|2 } } cursorid:26977319316 ntoreturn:0 keyUpdates:0 writeConflicts:0 numYields:1 nreturned:0 reslen:20 locks:{ Global: { acquireCount: { r: 6 } }, MMAPV1Journal: { acquireCount: { r: 3 } }, Database: { acquireCount: { r: 3 } }, oplog: { acquireCount: { R: 3 } } } 1000ms
2016-05-18T20:48:18.627+0200 I -        [conn511] Invariant failure grantedCounts[mode] >= 1 src/mongo/db/concurrency/lock_manager.cpp 251
2016-05-18T20:48:18.627+0200 I COMMAND  [conn661] getmore local.oplog.rs query: { ns: { $regex: "^blah\." }, $or: [ { op: { $in: [ "i", "u", "d" ] } }, { op: "c", o.drop: { $exists: true } }, { op: "c", o.dropDatabase: 1 } ], ts: { $gt: Timestamp 1463580273000|1 } } cursorid:27932375020 ntoreturn:0 keyUpdates:0 writeConflicts:0 numYields:1 nreturned:0 reslen:20 locks:{ Global: { acquireCount: { r: 6 } }, MMAPV1Journal: { acquireCount: { r: 3 } }, Database: { acquireCount: { r: 3 } }, oplog: { acquireCount: { R: 3 } } } 1000ms
2016-05-18T20:48:18.627+0200 I -        [conn511]

***aborting after invariant() failure


2016-05-18T20:48:18.639+0200 F -        [conn511] Got signal: 6 (Aborted).

 0x1315982 0x1314ad9 0x13152e2 0x7f295deb4d10 0x7f295db0f267 0x7f295db10eca 0x129f8fb 0xbb046d 0xbb7206 0xbbac1c 0xbc4c85 0xde9f76 0xccee49 0xcd5115 0x9b78cc 0x12c2e7d 0x7f295deab6aa 0x7f295dbe0e9d
----- BEGIN BACKTRACE -----
{"backtrace":[{"b":"400000","o":"F15982","s":"_ZN5mongo15printStackTraceERSo"},{"b":"400000","o":"F14AD9"},{"b":"400000","o":"F152E2"},{"b":"7F295DEA4000","o":"10D10"},{"b":"7F295DADA000","o":"35267","s":"gsignal"},{"b":"7F295DADA000","o":"36ECA","s":"abort"},{"b":"400000","o":"E9F8FB","s":"_ZN5mongo15invariantFailedEPKcS1_j"},{"b":"400000","o":"7B046D","s":"_ZN5mongo11LockManager6unlockEPNS_11LockRequestE"},{"b":"400000","o":"7B7206","s":"_ZN5mongo10LockerImplILb1EE11_unlockImplEPNS_14FastMapNoAllocINS_10ResourceIdENS_11LockRequestELi16EE12IteratorImplIS5_S4_EE"},{"b":"400000","o":"7BAC1C","s":"_ZN5mongo10LockerImplILb1EE6unlockENS_10ResourceIdE"},{"b":"400000","o":"7C4C85","s":"_ZN5mongo24AutoGetCollectionForReadD1Ev"},{"b":"400000","o":"9E9F76","s":"_ZN5mongo7getMoreEPNS_16OperationContextEPKcixPbS4_"},{"b":"400000","o":"8CEE49","s":"_ZN5mongo15receivedGetMoreEPNS_16OperationContextERNS_10DbResponseERNS_7MessageERNS_5CurOpE"},{"b":"400000","o":"8D5115","s":"_ZN5mongo16assembleR esponseEPNS_16OperationContextERNS_7MessageERNS_10DbResponseERKNS_11HostAndPortE"},{"b":"400000","o":"5B78CC","s":"_ZN5mongo16MyMessageHandler7processERNS_7MessageEPNS_21AbstractMessagingPortE"},{"b":"400000","o":"EC2E7D","s":"_ZN5mongo17PortMessageServer17handleIncomingMsgEPv"},{"b":"7F295DEA4000","o":"76AA"},{"b":"7F295DADA000","o":"106E9D","s":"clone"}],"processInfo":{ "mongodbVersion" : "3.2.6", "gitVersion" : "05552b562c7a0b3143a729aaa0838e558dc49b25", "compiledModules" : [], "uname" : { "sysname" : "Linux", "release" : "4.2.0-36-generic", "version" : "#41-Ubuntu SMP Mon Apr 18 15:49:10 UTC 2016", "machine" : "x86_64" }, "somap" : [ { "elfType" : 2, "b" : "400000", "buildId" : "B35B0D2B9CB934315BA086AB5C88C919B9B5BA50" }, { "b" : "7FFF7BBF1000", "elfType" : 3, "buildId" : "9797E1859293A4899C7420402AC699C96923910C" }, { "b" : "7F295EE31000", "path" : "/lib/x86_64-linux-gnu/libssl.so.1.0.0", "elfType" : 3, "buildId" : "96D927A52B6A405C147AC4D3F8A6F14CC31316BA" }, { "b" : "7F295E9ED000", "path" : "/lib/x86_64-linux-gnu/libcrypto.so.1.0.0", "elfType" : 3, "buildId" : "039AD0290D6DDCD62FFAAFF6D241FD313938E654" }, { "b" : "7F295E7E5000", "path" : "/lib/x86_64-linux-gnu/librt.so.1", "elfType" : 3, "buildId" : "7ED450BD936778B73D53F9E69AD2E3E0BD614277" }, { "b" : "7F295E5E1000", "path" : "/lib/x86_64-linux-gnu/libdl.so.2", "elfType" : 3, "buildId" : "A20BCC32D4C15FAB47EEC600027EF571699A03FD" }, { "b" : "7F295E2D9000", "path" : "/lib/x86_64-linux-gnu/libm.so.6", "elfType" : 3, "buildId" : "42FC4D8B6B70D1A8469B3A1A0164A2559F4E17C3" }, { "b" : "7F295E0C2000", "path" : "/lib/x86_64-linux-gnu/libgcc_s.so.1", "elfType" : 3, "buildId" : "0C3C07EE15CFA81346847A679E8444B876D9CC58" }, { "b" : "7F295DEA4000", "path" : "/lib/x86_64-linux-gnu/libpthread.so.0", "elfType" : 3, "buildId" : "E68326F6C5F4C01A31EE635E6563BE58749F3AB4" }, { "b" : "7F295DADA000", "path" : "/lib/x86_64-linux-gnu/libc.so.6", "elfType" : 3, "buildId" : "59EAE8A903584DCBC14CF07C719CD23B9F65E230" }, { "b" : "7F295F09A000", "path" : "/lib64/ld-linux-x86-64.so.2", "elfType" : 3, "buildId" : "CC2853E4A748C809FA82EA774FBACE3AD67DAFED" } ] }}
 mongod(_ZN5mongo15printStackTraceERSo+0x32) [0x1315982]
 mongod(+0xF14AD9) [0x1314ad9]
 mongod(+0xF152E2) [0x13152e2]
 libpthread.so.0(+0x10D10) [0x7f295deb4d10]
 libc.so.6(gsignal+0x37) [0x7f295db0f267]
 libc.so.6(abort+0x16A) [0x7f295db10eca]
 mongod(_ZN5mongo15invariantFailedEPKcS1_j+0xCB) [0x129f8fb]
 mongod(_ZN5mongo11LockManager6unlockEPNS_11LockRequestE+0x44D) [0xbb046d]
 mongod(_ZN5mongo10LockerImplILb1EE11_unlockImplEPNS_14FastMapNoAllocINS_10ResourceIdENS_11LockRequestELi16EE12IteratorImplIS5_S4_EE+0x36) [0xbb7206]
 mongod(_ZN5mongo10LockerImplILb1EE6unlockENS_10ResourceIdE+0x10C) [0xbbac1c]
 mongod(_ZN5mongo24AutoGetCollectionForReadD1Ev+0xB5) [0xbc4c85]
 mongod(_ZN5mongo7getMoreEPNS_16OperationContextEPKcixPbS4_+0x866) [0xde9f76]
 mongod(_ZN5mongo15receivedGetMoreEPNS_16OperationContextERNS_10DbResponseERNS_7MessageERNS_5CurOpE+0x1A9) [0xccee49]
 mongod(_ZN5mongo16assembleResponseEPNS_16OperationContextERNS_7MessageERNS_10DbResponseERKNS_11HostAndPortE+0xE35) [0xcd5115]
 mongod(_ZN5mongo16MyMessageHandler7processERNS_7MessageEPNS_21AbstractMessagingPortE+0xEC) [0x9b78cc]
 mongod(_ZN5mongo17PortMessageServer17handleIncomingMsgEPv+0x26D) [0x12c2e7d]
 libpthread.so.0(+0x76AA) [0x7f295deab6aa]
 libc.so.6(clone+0x6D) [0x7f295dbe0e9d]
-----  END BACKTRACE  -----