m31001| 2014-11-12T17:15:19.812-0500 I REPLSETS [ReplicationExecutor] transition to RECOVERING
 m31001| 2014-11-12T17:15:19.813-0500 I REPLSETS [ReplicationExecutor] transition to SECONDARY
 m31001| 2014-11-12T17:15:19.813-0500 F -        [repl prefetch worker 15] Invalid access at address: 0
 m31001| 2014-11-12T17:15:19.816-0500 F -        [repl prefetch worker 15] Got signal: 11 (Segmentation fault: 11).
 m31001| 
 m31001|  0x10799012a 0x10798fbb0 0x7fff8f8f1f1a 0x108317350 0x1074efbcf 0x107680494 0x107922a12 0x1079d1571 0x7fff8981f2fc 0x7fff8981f279 0x7fff8981d4b1
 m31001| ----- BEGIN BACKTRACE -----
 m31001| {"backtrace":[{"b":"107086000","o":"90A12A"},{"b":"107086000","o":"909BB0"},{"b":"7FFF8F8ED000","o":"4F1A"},{"b":"107086000","o":"1291350"},{"b":"107086000","o":"469BCF"},{"b":"107086000","o":"5FA494"},{"b":"107086000","o":"89CA12"},{"b":"107086000","o":"94B571"},{"b":"7FFF8981C000","o":"32FC"},{"b":"7FFF8981C000","o":"3279"},{"b":"7FFF8981C000","o":"14B1"}],"processInfo":{ "mongodbVersion" : "2.7.9-pre-", "gitVersion" : "04869a65202864514e6066ef77798a39c7c4920d", "uname" : { "sysname" : "Darwin", "release" : "14.0.0", "version" : "Darwin Kernel Version 14.0.0: Fri Sep 19 00:26:44 PDT 2014; root:xnu-2782.1.97~2/RELEASE_X86_64", "machine" : "x86_64" }, "somap" : [ { "path" : "/Users/charlie/github/mongo/mongod", "machType" : 2, "b" : "107086000", "buildId" : "E1D66906875A3E53BE2B8B8BE4E26687" }, { "path" : "/usr/lib/libSystem.B.dylib", "machType" : 6, "b" : "7FFF96B38000", "buildId" : "DA954461EC6A3DF085516FC810627627" }, { "path" : "/usr/lib/libstdc++.6.dylib", "machType" : 6, "b" : "7FFF9677E000", "buildId" : "803F6AC887DC3E249E80729B551F6FFF" }, { "path" : "/usr/lib/system/libcache.dylib", "machType" : 6, "b" : "7FFF89B38000", "buildId" : "45E9A2E799C436B2BEE30C4E11614AD1" }, { "path" : "/usr/lib/system/libcommonCrypto.dylib", "machType" : 6, "b" : "7FFF922AA000", "buildId" : "D381EBC669D831D380845A80A32CB748" }, { "path" : "/usr/lib/system/libcompiler_rt.dylib", "machType" : 6, "b" : "7FFF941AD000", "buildId" : "BF8FC133EE103DA69B9092039E28678F" }, { "path" : "/usr/lib/system/libcopyfile.dylib", "machType" : 6, "b" : "7FFF95623000", "buildId" : "0C68D3A6ACDD3EF3991ACC82C32AB836" }, { "path" : "/usr/lib/system/libcorecrypto.dylib", "machType" : 6, "b" : "7FFF91A37000", "buildId" : "E178980139853949B7366B3378873301" }, { "path" : "/usr/lib/system/libdispatch.dylib", "machType" : 6, "b" : "7FFF941C4000", "buildId" : "502CF32B669B3709886208188225E4F0" }, { "path" : "/usr/lib/system/libdyld.dylib", "machType" : 6, "b" : "7FFF8AF81000", "buildId" : "19FAF435C16533749DEFD7BBA7D61DB6" }, { "path" : "/usr/lib/system/libkeymgr.dylib", "machType" : 6, "b" : "7FFF8D912000", "buildId" : "77845842DE703CC5BD01C3D14227CED5" }, { "path" : "/usr/lib/system/liblaunch.dylib", "machType" : 6, "b" : "7FFF9562E000", "buildId" : "8A9889248BE735FEBF7D322E90EFE49E" }, { "path" : "/usr/lib/system/libmacho.dylib", "machType" : 6, "b" : "7FFF96B32000", "buildId" : "126CA2EDDE91308F8881B9DAEC3C63B6" }, { "path" : "/usr/lib/system/libquarantine.dylib", "machType" : 6, "b" : "7FFF8D1B3000", "buildId" : "DC0416272D92361CBABFA869A5C72293" }, { "path" : "/usr/lib/system/libremovefile.dylib", "machType" : 6, "b" : "7FFF9417C000", "buildId" : "3485B5F46CE83C628DFD8736ED6E8531" }, { "path" : "/usr/lib/system/libsystem_asl.dylib", "machType" : 6, "b" : "7FFF8F8D6000", "buildId" : "F153AC5B0542356E88C820A62CA704E2" }, { "path" : "/usr/lib/system/libsystem_blocks.dylib", "machType" : 6, "b" : "7FFF8D6DA000", "buildId" : "9615D10AFCA73BE4AA1A1B195DACE1A1" }, { "path" : "/usr/lib/system/libsystem_c.dylib", "machType" : 6, "b" : "7FFF97F65000", "buildId" : "C185E86274243210B5286B822577A4B8" }, { "path" : "/usr/lib/system/libsystem_configuration.dylib", "machType" : 6, "b" : "7FFF8FB41000", "buildId" : "9FBA1CE497D0347EA44393ED94512E92" }, { "path" : "/usr/lib/system/libsystem_coreservices.dylib", "machType" : 6, "b" : "7FFF912F5000", "buildId" : "41B7C5785A5331C8A96FC73E030B0938" }, { "path" : "/usr/lib/system/libsystem_coretls.dylib", "machType" : 6, "b" : "7FFF8998D000", "buildId" : "EBBF7EF680D83F8F825CB412BD6D22C0" }, { "path" : "/usr/lib/system/libsystem_dnssd.dylib", "machType" : 6, "b" : "7FFF98DAD000", "buildId" : "62B70ECAE40D3C63896E7F00EC386DDB" }, { "path" : "/usr/lib/system/libsystem_info.dylib", "machType" : 6, "b" : "7FFF936B2000", "buildId" : "B85A85D585303A93B0C34DEC41F79478" }, { "path" : "/usr/lib/system/libsystem_kernel.dylib", "machType" : 6, "b" : "7FFF93107000", "buildId" : "93E0E0A975B63904BB4E4BC7C05F4B6B" }, { "path" : "/usr/lib/system/libsystem_m.dylib", "machType" : 6, "b" : "7FFF8C851000", "buildId" : "1E12AB456D9636D0A226F24D9FB0D9D6" }, { "path" : "/usr/lib/system/libsystem_malloc.dylib", "machType" : 6, "b" : "7FFF922C7000", "buildId" : "19BCC25757173502A71F95D65AFA861B" }, { "path" : "/usr/lib/system/libsystem_network.dylib", "machType" : 6, "b" : "7FFF9116E000", "buildId" : "C0B2313D47BE38A9BEE62634A4F5E14B" }, { "path" : "/usr/lib/system/libsystem_networkextension.dylib", "machType" : 6, "b" : "7FFF92CA1000", "buildId" : "29AB225BD7FB30ED960065D44B9A9442" }, { "path" : "/usr/lib/system/libsystem_notify.dylib", "machType" : 6, "b" : "7FFF8BDAE000", "buildId" : "61147800F3203DAA850CBADF33855F29" }, { "path" : "/usr/lib/system/libsystem_platform.dylib", "machType" : 6, "b" : "7FFF8F8ED000", "buildId" : "64E34079D7123D669CE2418624A5C040" }, { "path" : "/usr/lib/system/libsystem_pthread.dylib", "machType" : 6, "b" : "7FFF8981C000", "buildId" : "26B1897F0CD330F3B55A37CB45062D73" }, { "path" : "/usr/lib/system/libsystem_sandbox.dylib", "machType" : 6, "b" : "7FFF901BC000", "buildId" : "DB9962EF889831CC9B87E01F8CE74C9D" }, { "path" : "/usr/lib/system/libsystem_secinit.dylib", "machType" : 6, "b" : "7FFF98C79000", "buildId" : "581DAD0F6B633A48B63B917AF799ABAA" }, { "path" : "/usr/lib/system/libsystem_stats.dylib", "machType" : 6, "b" : "7FFF94333000", "buildId" : "1DB0443659743F1686CC5FF5F390339C" }, { "path" : "/usr/lib/system/libsystem_trace.dylib", "machType" : 6, "b" : "7FFF97521000", "buildId" : "A9E6B7D8C3273742AC5486C94218B1DF" }, { "path" : "/usr/lib/system/libunc.dylib", "machType" : 6, "b" : "7FFF91A0E000", "buildId" : "5676F7EAC1DF329FB006D2C3022B7D70" }, { "path" : "/usr/lib/system/libunwind.dylib", "machType" : 6, "b" : "7FFF8999F000", "buildId" : "BE7E51A0B6EA3A549CCA9D88F683A6D6" }, { "path" : "/usr/lib/system/libxpc.dylib", "machType" : 6, "b" : "7FFF952A7000", "buildId" : "9437C02EA07B38C891CB299FAA63083D" }, { "path" : "/usr/lib/libobjc.A.dylib", "machType" : 6, "b" : "7FFF93125000", "buildId" : "3B60CD9074A23A5D9686B0772159792A" }, { "path" : "/usr/lib/libauto.dylib", "machType" : 6, "b" : "7FFF97888000", "buildId" : "A260789BD4D8316A9490254767B8A5F1" }, { "path" : "/usr/lib/libc++abi.dylib", "machType" : 6, "b" : "7FFF8FE7A000", "buildId" : "88A22A0F87C63002BFBAAC0F2808B8B9" }, { "path" : "/usr/lib/libc++.1.dylib", "machType" : 6, "b" : "7FFF90122000", "buildId" : "1B9530FD989B3174BB1CBDC159501710" }, { "path" : "/usr/lib/libDiagnosticMessagesClient.dylib", "machType" : 6, "b" : "7FFF8AF96000", "buildId" : "2EE8E4365CDC34C599595BA218D507FB" } ] }}
 m31001|  mongod(_ZN5mongo15printStackTraceERSo+0x3A) [0x10799012a]
 m31001|  mongod(_ZN5mongo12_GLOBAL__N_124abruptQuitWithAddrSignalEiP9__siginfoPv+0x240) [0x10798fbb0]
 m31001|  libsystem_platform.dylib(_sigtramp+0x1A) [0x7fff8f8f1f1a]
 m31001|  mongod(_ZN8tcmalloc6Static14central_cache_E+0x2180) [0x108317350]
 m31001|  mongod(_ZN5mongo4repl28prefetchPagesForReplicatedOpEPNS_16OperationContextEPNS_8DatabaseERKNS_7BSONObjE+0x13F) [0x1074efbcf]
 m31001|  mongod(_ZN5mongo4repl8SyncTail10prefetchOpERKNS_7BSONObjE+0xC4) [0x107680494]
 m31001|  mongod(_ZN5mongo10threadpool6Worker4loopERKSs+0x92) [0x107922a12]
 m31001|  mongod(_ZN5boost12_GLOBAL__N_112thread_proxyEPv+0xB1) [0x1079d1571]
 m31001|  libsystem_pthread.dylib(_pthread_body+0x83) [0x7fff8981f2fc]
 m31001|  libsystem_pthread.dylib(_pthread_body+0x0) [0x7fff8981f279]
 m31001|  libsystem_pthread.dylib(thread_start+0xD) [0x7fff8981d4b1]
 m31001| -----  END BACKTRACE  -----