Here's a simple reproduction command and output. [ernie@eahimac ~]$ mkdir -p /tmp/crashtest ; rm -rf /tmp/crashtest/* ; ./mongod --port 12312 --dbpath /tmp/crashtest --fork --logpath `tty` --pidfilepath /tmp/crashtest.pid ; kill `cat /tmp/crashtest.pid` about to fork child process, waiting until server is ready for connections. forked process: 86934 2014-12-17T18:22:41.050-0500 I CONTROL [initandlisten] MongoDB starting : pid=86934 port=12312 dbpath=/tmp/crashtest 64-bit host=eahimac 2014-12-17T18:22:41.050-0500 I CONTROL [initandlisten] db version v2.8.0-rc3-pre- 2014-12-17T18:22:41.050-0500 I CONTROL [initandlisten] git version: fd08ed58f4d3ffe284e1d28d9ebe44ab10ffbe6f 2014-12-17T18:22:41.050-0500 I CONTROL [initandlisten] build info: Darwin mci-osx108-7.build.10gen.cc 12.5.0 Darwin Kernel Version 12.5.0: Sun Sep 29 13:33:47 PDT 2013; root:xnu-2050.48.12~1/RELEASE_X86_64 x86_64 BOOST_LIB_VERSION=1_49 2014-12-17T18:22:41.050-0500 I CONTROL [initandlisten] allocator: system 2014-12-17T18:22:41.050-0500 I CONTROL [initandlisten] options: { net: { port: 12312 }, processManagement: { fork: true, pidFilePath: "/tmp/crashtest.pid" }, storage: { dbPath: "/tmp/crashtest" }, systemLog: { destination: "file", path: "/dev/ttys005" } } 2014-12-17T18:22:41.418-0500 I JOURNAL [initandlisten] journal dir=/tmp/crashtest/journal 2014-12-17T18:22:41.418-0500 I JOURNAL [initandlisten] recover : no journal files present, no recovery needed child process started successfully, parent exiting 2014-12-17T18:22:41.441-0500 I INDEX [initandlisten] allocating new ns file /tmp/crashtest/local.ns, filling with zeroes... 2014-12-17T18:22:41.444-0500 I CONTROL [signalProcessingThread] got signal 15 (Terminated: 15), will terminate after current cmd ends [ernie@eahimac ~]$ 2014-12-17T18:22:41.502-0500 I STORAGE [FileAllocator] allocating new datafile /tmp/crashtest/local.0, filling with zeroes... 2014-12-17T18:22:41.502-0500 I STORAGE [FileAllocator] creating directory /tmp/crashtest/_tmp 2014-12-17T18:22:41.767-0500 I STORAGE [FileAllocator] done allocating datafile /tmp/crashtest/local.0, size: 64MB, took 0.264 secs 2014-12-17T18:22:41.832-0500 I - [initandlisten] Assertion: 10357:shutdown in progress 2014-12-17T18:22:41.835-0500 I CONTROL [initandlisten] 0x1096b0949 0x109664870 0x109653aaa 0x10949076b 0x1094bac9f 0x1094bb854 0x1094c0d71 0x1094af6c0 0x1094b2d19 0x10908c00f 0x10908d100 0x108f7ce80 0x108f797b3 0x108f7e60c 0x108f79794 0xa ----- BEGIN BACKTRACE ----- {"backtrace":[{"b":"108F78000","o":"738949"},{"b":"108F78000","o":"6EC870"},{"b":"108F78000","o":"6DBAAA"},{"b":"108F78000","o":"51876B"},{"b":"108F78000","o":"542C9F"},{"b":"108F78000","o":"543854"},{"b":"108F78000","o":"548D71"},{"b":"108F78000","o":"5376C0"},{"b":"108F78000","o":"53AD19"},{"b":"108F78000","o":"11400F"},{"b":"108F78000","o":"115100"},{"b":"108F78000","o":"4E80"},{"b":"108F78000","o":"17B3"},{"b":"108F78000","o":"660C"},{"b":"108F78000","o":"1794"},{"b":"0","o":"A"}],"processInfo":{ "mongodbVersion" : "2.8.0-rc3-pre-", "gitVersion" : "fd08ed58f4d3ffe284e1d28d9ebe44ab10ffbe6f", "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/ernie/./mongod", "machType" : 2, "b" : "108F78000", "buildId" : "33DA128AAAA43CBE8854F01EFDFD426D" }, { "path" : "/usr/lib/libSystem.B.dylib", "machType" : 6, "b" : "7FFF8C035000", "buildId" : "DA954461EC6A3DF085516FC810627627" }, { "path" : "/usr/lib/libc++.1.dylib", "machType" : 6, "b" : "7FFF8FFCA000", "buildId" : "1B9530FD989B3174BB1CBDC159501710" }, { "path" : "/usr/lib/system/libcache.dylib", "machType" : 6, "b" : "7FFF8BFB7000", "buildId" : "45E9A2E799C436B2BEE30C4E11614AD1" }, { "path" : "/usr/lib/system/libcommonCrypto.dylib", "machType" : 6, "b" : "7FFF89B02000", "buildId" : "D381EBC669D831D380845A80A32CB748" }, { "path" : "/usr/lib/system/libcompiler_rt.dylib", "machType" : 6, "b" : "7FFF8EF21000", "buildId" : "BF8FC133EE103DA69B9092039E28678F" }, { "path" : "/usr/lib/system/libcopyfile.dylib", "machType" : 6, "b" : "7FFF89B0E000", "buildId" : "0C68D3A6ACDD3EF3991ACC82C32AB836" }, { "path" : "/usr/lib/system/libcorecrypto.dylib", "machType" : 6, "b" : "7FFF88F5F000", "buildId" : "E178980139853949B7366B3378873301" }, { "path" : "/usr/lib/system/libdispatch.dylib", "machType" : 6, "b" : "7FFF86946000", "buildId" : "502CF32B669B3709886208188225E4F0" }, { "path" : "/usr/lib/system/libdyld.dylib", "machType" : 6, "b" : "7FFF8960D000", "buildId" : "19FAF435C16533749DEFD7BBA7D61DB6" }, { "path" : "/usr/lib/system/libkeymgr.dylib", "machType" : 6, "b" : "7FFF916C7000", "buildId" : "77845842DE703CC5BD01C3D14227CED5" }, { "path" : "/usr/lib/system/liblaunch.dylib", "machType" : 6, "b" : "7FFF91883000", "buildId" : "8A9889248BE735FEBF7D322E90EFE49E" }, { "path" : "/usr/lib/system/libmacho.dylib", "machType" : 6, "b" : "7FFF8AE85000", "buildId" : "126CA2EDDE91308F8881B9DAEC3C63B6" }, { "path" : "/usr/lib/system/libquarantine.dylib", "machType" : 6, "b" : "7FFF914B2000", "buildId" : "DC0416272D92361CBABFA869A5C72293" }, { "path" : "/usr/lib/system/libremovefile.dylib", "machType" : 6, "b" : "7FFF8AE24000", "buildId" : "3485B5F46CE83C628DFD8736ED6E8531" }, { "path" : "/usr/lib/system/libsystem_asl.dylib", "machType" : 6, "b" : "7FFF86194000", "buildId" : "F153AC5B0542356E88C820A62CA704E2" }, { "path" : "/usr/lib/system/libsystem_blocks.dylib", "machType" : 6, "b" : "7FFF8C609000", "buildId" : "9615D10AFCA73BE4AA1A1B195DACE1A1" }, { "path" : "/usr/lib/system/libsystem_c.dylib", "machType" : 6, "b" : "7FFF8C1CF000", "buildId" : "C185E86274243210B5286B822577A4B8" }, { "path" : "/usr/lib/system/libsystem_configuration.dylib", "machType" : 6, "b" : "7FFF8C266000", "buildId" : "9FBA1CE497D0347EA44393ED94512E92" }, { "path" : "/usr/lib/system/libsystem_coreservices.dylib", "machType" : 6, "b" : "7FFF88031000", "buildId" : "41B7C5785A5331C8A96FC73E030B0938" }, { "path" : "/usr/lib/system/libsystem_coretls.dylib", "machType" : 6, "b" : "7FFF91604000", "buildId" : "EBBF7EF680D83F8F825CB412BD6D22C0" }, { "path" : "/usr/lib/system/libsystem_dnssd.dylib", "machType" : 6, "b" : "7FFF8C07F000", "buildId" : "62B70ECAE40D3C63896E7F00EC386DDB" }, { "path" : "/usr/lib/system/libsystem_info.dylib", "machType" : 6, "b" : "7FFF9016B000", "buildId" : "B85A85D585303A93B0C34DEC41F79478" }, { "path" : "/usr/lib/system/libsystem_kernel.dylib", "machType" : 6, "b" : "7FFF8B7D1000", "buildId" : "93E0E0A975B63904BB4E4BC7C05F4B6B" }, { "path" : "/usr/lib/system/libsystem_m.dylib", "machType" : 6, "b" : "7FFF86877000", "buildId" : "1E12AB456D9636D0A226F24D9FB0D9D6" }, { "path" : "/usr/lib/system/libsystem_malloc.dylib", "machType" : 6, "b" : "7FFF8930A000", "buildId" : "19BCC25757173502A71F95D65AFA861B" }, { "path" : "/usr/lib/system/libsystem_network.dylib", "machType" : 6, "b" : "7FFF871B3000", "buildId" : "C0B2313D47BE38A9BEE62634A4F5E14B" }, { "path" : "/usr/lib/system/libsystem_networkextension.dylib", "machType" : 6, "b" : "7FFF8AD0B000", "buildId" : "29AB225BD7FB30ED960065D44B9A9442" }, { "path" : "/usr/lib/system/libsystem_notify.dylib", "machType" : 6, "b" : "7FFF89AF8000", "buildId" : "61147800F3203DAA850CBADF33855F29" }, { "path" : "/usr/lib/system/libsystem_platform.dylib", "machType" : 6, "b" : "7FFF86FA8000", "buildId" : "64E34079D7123D669CE2418624A5C040" }, { "path" : "/usr/lib/system/libsystem_pthread.dylib", "machType" : 6, "b" : "7FFF852B0000", "buildId" : "26B1897F0CD330F3B55A37CB45062D73" }, { "path" : "/usr/lib/system/libsystem_sandbox.dylib", "machType" : 6, "b" : "7FFF900A3000", "buildId" : "DB9962EF889831CC9B87E01F8CE74C9D" }, { "path" : "/usr/lib/system/libsystem_secinit.dylib", "machType" : 6, "b" : "7FFF8E8CF000", "buildId" : "581DAD0F6B633A48B63B917AF799ABAA" }, { "path" : "/usr/lib/system/libsystem_stats.dylib", "machType" : 6, "b" : "7FFF88B76000", "buildId" : "1DB0443659743F1686CC5FF5F390339C" }, { "path" : "/usr/lib/system/libsystem_trace.dylib", "machType" : 6, "b" : "7FFF8C078000", "buildId" : "A9E6B7D8C3273742AC5486C94218B1DF" }, { "path" : "/usr/lib/system/libunc.dylib", "machType" : 6, "b" : "7FFF9298B000", "buildId" : "5676F7EAC1DF329FB006D2C3022B7D70" }, { "path" : "/usr/lib/system/libunwind.dylib", "machType" : 6, "b" : "7FFF86F03000", "buildId" : "BE7E51A0B6EA3A549CCA9D88F683A6D6" }, { "path" : "/usr/lib/system/libxpc.dylib", "machType" : 6, "b" : "7FFF8535E000", "buildId" : "9437C02EA07B38C891CB299FAA63083D" }, { "path" : "/usr/lib/libobjc.A.dylib", "machType" : 6, "b" : "7FFF8F7D7000", "buildId" : "3B60CD9074A23A5D9686B0772159792A" }, { "path" : "/usr/lib/libauto.dylib", "machType" : 6, "b" : "7FFF860CE000", "buildId" : "A260789BD4D8316A9490254767B8A5F1" }, { "path" : "/usr/lib/libc++abi.dylib", "machType" : 6, "b" : "7FFF9204D000", "buildId" : "88A22A0F87C63002BFBAAC0F2808B8B9" }, { "path" : "/usr/lib/libDiagnosticMessagesClient.dylib", "machType" : 6, "b" : "7FFF8B46A000", "buildId" : "2EE8E4365CDC34C599595BA218D507FB" } ] }} mongod(_ZN5mongo15printStackTraceERNSt3__113basic_ostreamIcNS0_11char_traitsIcEEEE+0x39) [0x1096b0949] mongod(_ZN5mongo10logContextEPKc+0x100) [0x109664870] mongod(_ZN5mongo11msgassertedEiPKc+0x13A) [0x109653aaa] mongod(_ZN5mongo8DataFile15allocExtentAreaEPNS_16OperationContextEi+0xEB) [0x10949076b] mongod(_ZN5mongo19MmapV1ExtentManager19_createExtentInFileEPNS_16OperationContextEiPNS_8DataFileEib+0x5F) [0x1094bac9f] mongod(_ZN5mongo19MmapV1ExtentManager14allocateExtentEPNS_16OperationContextEbib+0x74) [0x1094bb854] mongod(_ZN5mongo17RecordStoreV1Base19increaseStorageSizeEPNS_16OperationContextEib+0x41) [0x1094c0d71] mongod(_ZN5mongo26MMAPV1DatabaseCatalogEntry9_lazyInitEPNS_16OperationContextE+0x620) [0x1094af6c0] mongod(_ZN5mongo26MMAPV1DatabaseCatalogEntry16createCollectionEPNS_16OperationContextERKNS_10StringDataERKNS_17CollectionOptionsEb+0x39) [0x1094b2d19] mongod(_ZN5mongo8Database16createCollectionEPNS_16OperationContextERKNS_10StringDataERKNS_17CollectionOptionsEbb+0x22F) [0x10908c00f] mongod(_ZN5mongo12userCreateNSEPNS_16OperationContextEPNS_8DatabaseERKNS_10StringDataENS_7BSONObjEbb+0x410) [0x10908d100] mongod(_ZN5mongoL14_initAndListenEi+0x3180) [0x108f7ce80] mongod(_ZN5mongo13initAndListenEi+0x13) [0x108f797b3] mongod(main+0x3BC) [0x108f7e60c] mongod(start+0x34) [0x108f79794] ??? [0xa] ----- END BACKTRACE ----- 2014-12-17T18:22:41.838-0500 I STORAGE [initandlisten] exception in initAndListen: 10357 shutdown in progress, terminating 2014-12-17T18:22:41.838-0500 I COMMAND [signalProcessingThread] now exiting 2014-12-17T18:22:41.839-0500 I NETWORK [signalProcessingThread] shutdown: going to close listening sockets... 2014-12-17T18:22:41.839-0500 I NETWORK [signalProcessingThread] removing socket file: /tmp/mongodb-12312.sock 2014-12-17T18:22:41.839-0500 I NETWORK [signalProcessingThread] shutdown: going to flush diaglog... 2014-12-17T18:22:41.839-0500 I NETWORK [signalProcessingThread] shutdown: going to close sockets... 2014-12-17T18:22:41.839-0500 I STORAGE [signalProcessingThread] shutdown: waiting for fs preallocator... 2014-12-17T18:22:41.839-0500 I STORAGE [signalProcessingThread] shutdown: final commit... 2014-12-17T18:22:41.853-0500 I STORAGE [signalProcessingThread] shutdown: closing all files... 2014-12-17T18:22:41.854-0500 I STORAGE [signalProcessingThread] closeAllFiles() finished 2014-12-17T18:22:41.854-0500 I JOURNAL [signalProcessingThread] journalCleanup... 2014-12-17T18:22:41.854-0500 I JOURNAL [signalProcessingThread] removeJournalFiles 2014-12-17T18:22:41.854-0500 I STORAGE [signalProcessingThread] shutdown: removing fs lock... 2014-12-17T18:22:41.854-0500 I COMMAND [signalProcessingThread] dbexit: rc: 0