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httpd crashes on 10.7.5 when free memory is low

We have been having intermittent Apache crashes on OS X 10.7.5 (Lion Server). These crashes only seem to come when free memory is low and inactive memory is very high using up almost all of the RAM (possibly unified buffer cache).


After a fresh reboot (and possibly using the "purge" command although we haven't tried this), the crashes don't happen.


The only thing we have changed is the following few lines in sysctl.conf to increase shared memory for XCache on PHP and network tweaks:


web3:~ ryanbarclay$ tail /etc/sysctl.conf

kern.sysv.shmmax=1073741824

net.inet.tcp.mssdflt=1460

net.inet.tcp.sendspace=262144

net.inet.tcp.recvspace=262144


The problem isn't with PHP or Apache it doesn't seem and we have also noticed crashes with XCache and APC disabled.


The crashes seem to always be on "Thread 1" which is kernel/OS side of things most of the time.


Any help, suggestions, tips or bug fixed are very greatly appreciated. Although, please do not suggest upgrading PHP/Apache or OS X - we need a fix for the system in its current state; we're not in a position to upgrade/recompile anything on such a live server.


Our crash report:


Process: httpd [52830]

Path: /usr/sbin/httpd

Identifier: httpd

Version: ??? (???)

Code Type: X86-64 (Native)

Parent Process: httpd [86996]



Date/Time: 2013-05-15 09:39:36.067 +0100

OS Version: Mac OS X Server 10.7.5 (11G63)

Report Version: 9



Crashed Thread: 1 Dispatch queue: com.apple.libdispatch-manager



Exception Type: EXC_CRASH (SIGSEGV)

Exception Codes: 0x0000000000000000, 0x0000000000000000



Application Specific Information:

objc[86996]: garbage collection is OFF



Thread 0:: Dispatch queue: com.apple.main-thread

0 libphp5.so 0x0000000103dbd7e2 _zend_hash_add_or_update + 75

1 libphp5.so 0x0000000103d6f5ad zend_symtable_update + 208

2 libphp5.so 0x0000000103d7047b php_register_variable_ex + 1584

3 libphp5.so 0x0000000103b5311d php_sapi_filter + 964

4 libphp5.so 0x0000000103d6a462 sapi_getenv + 99

5 libphp5.so 0x0000000103d74a7d php_security_log + 193

6 libphp5.so 0x0000000103dcccd2 _zend_mm_free_canary_int + 110

7 libphp5.so 0x0000000103d9786e _efree + 52

8 libphp5.so 0x0000000103db07b8 _zval_dtor_func + 56

9 libphp5.so 0x0000000103daa6ce destroy_op_array + 181

10 libphp5.so 0x0000000103dbc712 zend_hash_destroy + 53

11 libphp5.so 0x0000000103daa849 destroy_zend_class + 100

12 libphp5.so 0x0000000103dbc464 zend_hash_apply_deleter + 189

13 libphp5.so 0x0000000103dbc50f zend_hash_reverse_apply + 102

14 libphp5.so 0x0000000103da8dd2 shutdown_executor + 650

15 libphp5.so 0x0000000103db1963 zend_deactivate + 99

16 libphp5.so 0x0000000103d61a4d php_request_shutdown + 583

17 libphp5.so 0x0000000103e2a5d4 php_handler + 1186

18 httpd 0x0000000103755031 ap_run_handler + 97

19 httpd 0x0000000103755bd6 ap_invoke_handler + 422

20 httpd 0x0000000103791616 ap_internal_redirect + 118

21 mod_rewrite.so 0x0000000103a5dc70 handler_redirect + 256

22 httpd 0x0000000103755031 ap_run_handler + 97

23 httpd 0x0000000103755bd6 ap_invoke_handler + 422

24 httpd 0x00000001037909cd ap_process_request + 125

25 httpd 0x000000010378c5c3 ap_process_http_connection + 131

26 httpd 0x000000010376c651 ap_run_process_connection + 97

27 httpd 0x000000010376cc31 ap_process_connection + 113

28 httpd 0x0000000103799c73 child_main + 1699

29 httpd 0x0000000103799eb3 make_child + 435

30 httpd 0x000000010379a23f perform_idle_server_maintenance + 703

31 httpd 0x000000010379a96c ap_mpm_run + 1740

32 httpd 0x0000000103760077 main + 4055

33 httpd 0x0000000103754374 start + 52



Thread 1 Crashed:: Dispatch queue: com.apple.libdispatch-manager

0 libsystem_kernel.dylib 0x00007fff8e2557e6 kevent + 10

1 libdispatch.dylib 0x00007fff89870786 _dispatch_mgr_invoke + 923

2 libdispatch.dylib 0x00007fff8986f316 _dispatch_mgr_thread + 54



Thread 1 crashed with X86 Thread State (64-bit):

rax: 0x0000000000000004 rbx: 0x00007fff763a31a0 rcx: 0x00000001432cb528 rdx: 0x0000000000000000

rdi: 0x000000000000001b rsi: 0x0000000000000000 rbp: 0x00000001432cb6a0 rsp: 0x00000001432cb528

r8: 0x0000000000000001 r9: 0x0000000000000000 r10: 0x00000001432cb538 r11: 0xffffff80002dad60

r12: 0x00007fff763a2540 r13: 0x0000000000000000 r14: 0x00007fff763a3230 r15: 0x0000000000000000

rip: 0x00007fff8e2557e6 rfl: 0x0000000000000247 cr2: 0x00007fff763a4310

Logical CPU: 0



Binary Images:

0x103753000 - 0x1037b0fff httpd (??? - ???) <A26F2D8E-42C7-3218-862E-31AB09C96EE3> /usr/sbin/httpd

0x1037e8000 - 0x103804ff7 libaprutil-1.0.dylib (4.10.0 - compatibility 4.0.0) <E6827C47-96C9-3DBE-8D7B-8C617ED0E0C3> /usr/lib/libaprutil-1.0.dylib

0x103812000 - 0x103812ff7 mod_logio.so (??? - ???) <6CF40510-6B4F-354B-B59A-A83C0970AC50> /usr/libexec/apache2/mod_logio.so

0x103816000 - 0x103832ff7 libpq.5.dylib (5.3.0 - compatibility 5.0.0) <E79C8831-3839-3379-B4B0-C85167488CCD> /usr/lib/libpq.5.dylib

0x10383d000 - 0x10383eff7 mod_authn_file.so (??? - ???) <F5CB823E-2560-3592-A1B7-4A22C698FE2E> /usr/libexec/apache2/mod_authn_file.so

0x103842000 - 0x103861ff7 libapr-1.0.dylib (5.2.0 - compatibility 5.0.0) <F0E12AE9-68D5-36E9-9C68-E9D80835899B> /usr/lib/libapr-1.0.dylib

0x10389c000 - 0x10389dff7 mod_authz_host.so (??? - ???) <CBA03BA0-34A6-3231-8F5D-745321A316C2> /usr/libexec/apache2/mod_authz_host.so

0x1038a1000 - 0x1038abff7 mod_cache.so (??? - ???) <399C181F-8E01-3C6C-A23A-DDD7E5122E7B> /usr/libexec/apache2/mod_cache.so

0x1038b1000 - 0x1038b6fff mod_disk_cache.so (??? - ???) <1BE94F22-2192-3AAD-990A-2063FEEE7A15> /usr/libexec/apache2/mod_disk_cache.so

0x1038bb000 - 0x1038bcff7 mod_dumpio.so (??? - ???) <5A309618-00B6-3D8D-BE9A-8F14600B0E76> /usr/libexec/apache2/mod_dumpio.so

0x1038c0000 - 0x1038c2ff7 mod_reqtimeout.so (??? - ???) <7DF4DCB5-F383-387A-BA60-18CC46E4F22B> /usr/libexec/apache2/mod_reqtimeout.so

0x1038c6000 - 0x1038caff7 mod_ext_filter.so (??? - ???) <A4401910-16BD-3792-B718-51F7D461250F> /usr/libexec/apache2/mod_ext_filter.so

0x1038cf000 - 0x1038dcff7 mod_include.so (??? - ???) <6F114C1B-2709-34A4-9987-8CEF62A6682C> /usr/libexec/apache2/mod_include.so

0x1038e1000 - 0x1038e4ff7 mod_filter.so (??? - ???) <01ACB670-C65F-3B0A-AD65-3CB700295E11> /usr/libexec/apache2/mod_filter.so

0x1038e8000 - 0x1038eaff7 mod_substitute.so (??? - ???) <479EEC08-E315-3692-B7CC-56BF3A83D905> /usr/libexec/apache2/mod_substitute.so

0x1038ee000 - 0x1038f3ff7 mod_deflate.so (??? - ???) <18745A4A-026A-3466-BD16-41DADF3AEC76> /usr/libexec/apache2/mod_deflate.so

0x1038f8000 - 0x1038fdfff mod_log_config.so (??? - ???) <1AC534F5-5F03-388E-815C-0D96934F93FD> /usr/libexec/apache2/mod_log_config.so

0x103903000 - 0x103904fef mod_log_forensic.so (??? - ???) <47F7D93A-7871-3B30-9C54-6C75479BEF1D> /usr/libexec/apache2/mod_log_forensic.so

0x103908000 - 0x103908ff7 mod_env.so (??? - ???) <DE6233FF-B6CD-3CBC-9D0C-7FBDBB1BB073> /usr/libexec/apache2/mod_env.so

0x10390c000 - 0x103912fff mod_mime_magic.so (??? - ???) <7205ACAA-ECF4-3913-A4DC-B30A4B2F545E> /usr/libexec/apache2/mod_mime_magic.so

0x103917000 - 0x103918ff7 mod_cern_meta.so (??? - ???) <53581AC3-1D1B-3CF1-B422-FE41038DCF2F> /usr/libexec/apache2/mod_cern_meta.so

0x10391c000 - 0x10391dfff mod_expires.so (??? - ???) <C18CE0EF-2F93-315D-B1B6-BF74371C56BF> /usr/libexec/apache2/mod_expires.so

0x103921000 - 0x103924ff7 mod_headers.so (??? - ???) <95E43829-4EFB-3490-9930-3FB4053E17B7> /usr/libexec/apache2/mod_headers.so

0x103929000 - 0x10392afff mod_ident.so (??? - ???) <B6DDB942-8BF0-3D3C-B606-31B9A3628766> /usr/libexec/apache2/mod_ident.so

0x10392e000 - 0x103930ff7 mod_usertrack.so (??? - ???) <25E14452-97F4-3DBD-9D41-ACB03774C706> /usr/libexec/apache2/mod_usertrack.so

0x103934000 - 0x103935fff mod_setenvif.so (??? - ???) <A02360F4-AEA4-3127-8C6C-86FCCD7C8B50> /usr/libexec/apache2/mod_setenvif.so

0x103939000 - 0x10393aff7 mod_version.so (??? - ???) <62D5012B-45BE-3F49-9CFD-8221AF5F9871> /usr/libexec/apache2/mod_version.so

0x10393e000 - 0x103954fff mod_proxy.so (??? - ???) <5EEB29B5-4318-3E77-8F95-27948552B03A> /usr/libexec/apache2/mod_proxy.so

0x10395c000 - 0x103964ff7 mod_proxy_http.so (??? - ???) <4D37F9D1-BCE5-3723-AA62-84BA49D78CFC> /usr/libexec/apache2/mod_proxy_http.so

0x10396a000 - 0x10396cfff mod_proxy_scgi.so (??? - ???) <E38D0EDD-68FF-3A0B-B58B-7DFAF3D6BB74> /usr/libexec/apache2/mod_proxy_scgi.so

0x103971000 - 0x103977ff7 mod_proxy_balancer.so (??? - ???) <92A43770-3BEA-3F6D-ABB1-93CF7CE3D6BF> /usr/libexec/apache2/mod_proxy_balancer.so

0x10397c000 - 0x1039acfff mod_ssl.so (??? - ???) <F93C4FD6-5603-3174-A631-34575432F338> /usr/libexec/apache2/mod_ssl.so

0x1039bd000 - 0x1039c0ff7 mod_mime.so (??? - ???) <E0BC8DE0-43F3-3AB4-85FE-D89940E52AEF> /usr/libexec/apache2/mod_mime.so

0x1039c5000 - 0x1039e1fff mod_dav.so (??? - ???) <2D9CE178-389C-3E55-9B28-DCD02B7618F7> /usr/libexec/apache2/mod_dav.so

0x1039e9000 - 0x1039f1ff7 mod_autoindex.so (??? - ???) <858B0EA1-E095-3D99-8E85-51C48981C57F> /usr/libexec/apache2/mod_autoindex.so

0x1039f6000 - 0x1039f6fff mod_asis.so (??? - ???) <B501C18C-0667-3233-B862-35CCB0A6AB65> /usr/libexec/apache2/mod_asis.so

0x1039fa000 - 0x1039fdfff mod_info.so (??? - ???) <78171E5F-6C73-33CF-BAE4-C527EBCCE103> /usr/libexec/apache2/mod_info.so

0x103a02000 - 0x103a07fff mod_cgi.so (??? - ???) <23EFED7D-5E35-3867-8F50-22D38C9E4654> /usr/libexec/apache2/mod_cgi.so

0x103a0d000 - 0x103a1aff7 mod_dav_fs.so (??? - ???) <332DA65D-DA6E-3A9E-A114-45AD1BFA3B97> /usr/libexec/apache2/mod_dav_fs.so

0x103a20000 - 0x103a21fff mod_vhost_alias.so (??? - ???) <07E4710C-0C22-3955-91C5-A949D4B4EF66> /usr/libexec/apache2/mod_vhost_alias.so

0x103a25000 - 0x103a2dfff mod_negotiation.so (??? - ???) <5846CAF4-F16F-3201-816D-05BD3DECF2F6> /usr/libexec/apache2/mod_negotiation.so

0x103a33000 - 0x103a34fff mod_dir.so (??? - ???) <F6412D21-1924-3CFF-9F12-AEBC48138A0D> /usr/libexec/apache2/mod_dir.so

0x103a38000 - 0x103a3bff7 mod_imagemap.so (??? - ???) <C13D0005-918A-314E-8BEE-620EB0C6F5A8> /usr/libexec/apache2/mod_imagemap.so

0x103a3f000 - 0x103a40ff7 mod_actions.so (??? - ???) <D978B364-C516-313C-AB95-ECCEB02F59ED> /usr/libexec/apache2/mod_actions.so

0x103a44000 - 0x103a45ff7 mod_speling.so (??? - ???) <6E09ED59-7E49-3A39-91DE-7E47834374B4> /usr/libexec/apache2/mod_speling.so

0x103a49000 - 0x103a4bff7 mod_alias.so (??? - ???) <A1CA635B-28B5-3B70-A788-7175D6BB4F18> /usr/libexec/apache2/mod_alias.so

0x103a4f000 - 0x103a60fff mod_rewrite.so (??? - ???) <988FFFE7-58D9-3670-9F26-247208C0103D> /usr/libexec/apache2/mod_rewrite.so

0x103a67000 - 0x10442eff7 libphp5.so (??? - ???) <DEC1C84B-43E4-30B2-9A1B-E9BC51804058> /usr/libexec/apache2/libphp5.so

0x1045af000 - 0x1045d3fff libedit.3.dylib (3.0.0 - compatibility 2.0.0) <C9988296-4EAC-3F56-A5A9-F4767BB35AD2> /usr/lib/libedit.3.dylib

0x1045e3000 - 0x10461ffff libiodbc.2.dylib (4.18.0 - compatibility 4.0.0) <2123BFBC-8C2B-3C77-B976-E085CAF7F706> /usr/lib/libiodbc.2.dylib

0x10462e000 - 0x1046acfff libnetsnmp.25.dylib (26.0.0 - compatibility 26.0.0) <5F879CD3-3844-3F2F-8F8C-FFAA87016A62> /usr/lib/libnetsnmp.25.dylib

0x104728000 - 0x104728fff mod_userdir_apple.so (??? - ???) <F014BEC7-9DE4-390D-A611-22CB82CDEC87> /usr/libexec/apache2/mod_userdir_apple.so

0x10472c000 - 0x104733fff mod_bonjour.so (??? - ???) <7EC654A3-7626-3438-A53E-AE4F7684A4A6> /usr/libexec/apache2/mod_bonjour.so

0x104738000 - 0x104738fff mod_hfs_apple.so (??? - ???) <BD3E4D13-8821-3E38-8A18-52AEB456072E> /usr/libexec/apache2/mod_hfs_apple.so

0x10473c000 - 0x10473efff mod_auth_apple.so (??? - ???) <9CD13A83-49FE-3D7C-BB2E-CCA57012B1BB> /usr/libexec/apache2/mod_auth_apple.so

0x104743000 - 0x104745fff mod_spnego_apple.so (??? - ???) <4A352DA9-DB9A-3FAE-A3DE-B6AD98E9E225> /usr/libexec/apache2/mod_spnego_apple.so

0x10474a000 - 0x10474cfff com.apple.spnegoapache (10.7 - 10.7) <1535FDCD-C7C6-37B4-A7EC-D3C1D5E0B010> /System/Library/PrivateFrameworks/SpnegoApache.framework/Versions/A/SpnegoApach e

0x104751000 - 0x104754fff mod_digest_apple.so (??? - ???) <9B8BE2F0-92D2-3885-9F55-402D7064D1F9> /usr/libexec/apache2/mod_digest_apple.so

0x104759000 - 0x104793ff7 com.apple.frameworks.CoreDaemon (1.0 - 1.0) <A131985C-8F2E-3706-957E-89BA1FA6A14E> /System/Library/PrivateFrameworks/CoreDaemon.framework/Versions/B/CoreDaemon

0x1047a3000 - 0x1047a6fff mod_status_apple.so (??? - ???) <168C89A7-43A4-31D2-9CFC-960AEAEC18C1> /usr/libexec/apache2/mod_status_apple.so

0x1047ab000 - 0x1047affff mod_upload_progress.so (??? - ???) <7857FF43-38C1-3FA5-8F63-9BECA3B02054> /usr/libexec/apache2/mod_upload_progress.so

0x104844000 - 0x104859fff xcache.so (??? - ???) <C1010FB4-4E86-3B6E-8DDF-87B6B6339D43> /usr/lib/php/extensions/no-debug-non-zts-20090626/xcache.so

0x7fff63353000 - 0x7fff63387baf dyld (195.6 - ???) <0CD1B35B-A28F-32DA-B72E-452EAD609613> /usr/lib/dyld

0x7fff85d3b000 - 0x7fff85d7afff com.apple.AE (527.7 - 527.7) <B82F7ABC-AC8B-3507-B029-969DD5CA813D> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/AE.fram ework/Versions/A/AE

0x7fff85d7b000 - 0x7fff85d9ffff com.apple.Kerberos (1.0 - 1) <1F826BCE-DA8F-381D-9C4C-A36AA0EA1CB9> /System/Library/Frameworks/Kerberos.framework/Versions/A/Kerberos

0x7fff85da0000 - 0x7fff85da1ff7 libsystem_blocks.dylib (53.0.0 - compatibility 1.0.0) <8BCA214A-8992-34B2-A8B9-B74DEACA1869> /usr/lib/system/libsystem_blocks.dylib

0x7fff85da2000 - 0x7fff86097ff7 com.apple.security (7.0 - 55148.6) <4535E500-973A-3BA7-AF65-DF5CF0658F02> /System/Library/Frameworks/Security.framework/Versions/A/Security

0x7fff86098000 - 0x7fff8609aff7 com.apple.print.framework.Print (7.4 - 247.3) <626C58D5-2841-3329-8C32-9F4A8353F3E7> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/Print.framewo rk/Versions/A/Print

0x7fff8609b000 - 0x7fff8617afff com.apple.ImageIO.framework (3.1.2 - 3.1.2) <047DFE61-500F-3F11-9881-D0844D2FCE5F> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ ImageIO.framework/Versions/A/ImageIO

0x7fff8617b000 - 0x7fff86184ff7 libsystem_notify.dylib (80.1.0 - compatibility 1.0.0) <A4D651E3-D1C6-3934-AD49-7A104FD14596> /usr/lib/system/libsystem_notify.dylib

0x7fff862c1000 - 0x7fff862c3fff libquarantine.dylib (36.7.0 - compatibility 1.0.0) <8D9832F9-E4A9-38C3-B880-E5210B2353C7> /usr/lib/system/libquarantine.dylib

0x7fff863de000 - 0x7fff864c2ff7 com.apple.CoreServices.OSServices (478.50 - 478.50) <3D6AA4EF-C601-36C7-8F3A-A00964F01759> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/OSServi ces.framework/Versions/A/OSServices

0x7fff864c9000 - 0x7fff865cbfff libxml2.2.dylib (10.3.0 - compatibility 10.0.0) <AFBB22B7-07AE-3F2E-B88C-70BEEBFB8A86> /usr/lib/libxml2.2.dylib

0x7fff868ef000 - 0x7fff86905ff7 com.apple.ImageCapture (7.1.0 - 7.1.0) <1AD40E02-2126-377B-A0D2-CBB21D932558> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/ImageCapture. framework/Versions/A/ImageCapture

0x7fff86906000 - 0x7fff8698aff7 com.apple.ApplicationServices.ATS (317.12.0 - ???) <BE3C156D-8326-37AA-BC4E-D3C0D31BF976> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ ATS.framework/Versions/A/ATS

0x7fff8698b000 - 0x7fff86995ff7 liblaunch.dylib (392.39.0 - compatibility 1.0.0) <8C235D13-2928-30E5-9E12-2CC3D6324AE2> /usr/lib/system/liblaunch.dylib

0x7fff86996000 - 0x7fff86996fff com.apple.Accelerate.vecLib (3.7 - vecLib 3.7) <C06A140F-6114-3B8B-B080-E509303145B8> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.fr amework/Versions/A/vecLib

0x7fff86997000 - 0x7fff869e3ff7 com.apple.SystemConfiguration (1.11.3 - 1.11) <0A7F1982-B4EA-3424-A0C7-FE46C6224F03> /System/Library/Frameworks/SystemConfiguration.framework/Versions/A/SystemConfi guration

0x7fff869e4000 - 0x7fff869fbfff com.apple.CFOpenDirectory (10.7 - 146) <E6D4F114-678B-3957-9C59-9206ECDA756E> /System/Library/Frameworks/OpenDirectory.framework/Versions/A/Frameworks/CFOpen Directory.framework/Versions/A/CFOpenDirectory

0x7fff869fc000 - 0x7fff86b08fff libcrypto.0.9.8.dylib (44.0.0 - compatibility 0.9.8) <3A8E1F89-5E26-3C8B-B538-81F5D61DBF8A> /usr/lib/libcrypto.0.9.8.dylib

0x7fff86b22000 - 0x7fff86ba7ff7 com.apple.Heimdal (2.2 - 2.0) <FF0BD9A4-6FB0-31E3-ABFB-563FBBEC45FC> /System/Library/PrivateFrameworks/Heimdal.framework/Versions/A/Heimdal

0x7fff86ba8000 - 0x7fff86bb6fff com.apple.NetAuth (3.2 - 3.2) <F0D60E34-37A9-308D-B44E-E3450906173A> /System/Library/PrivateFrameworks/NetAuth.framework/Versions/A/NetAuth

0x7fff86bb7000 - 0x7fff86bd4fff libxpc.dylib (77.19.0 - compatibility 1.0.0) <9F57891B-D7EF-3050-BEDD-21E7C6668248> /usr/lib/system/libxpc.dylib

0x7fff86bd9000 - 0x7fff86be7ff7 libkxld.dylib (??? - ???) <01161870-E3B3-3F87-BA4A-0AA7A081F409> /usr/lib/system/libkxld.dylib

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0x7fff8e9ee000 - 0x7fff8ee1bfff libLAPACK.dylib (??? - ???) <4F2E1055-2207-340B-BB45-E4F16171EE0D> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.fr amework/Versions/A/libLAPACK.dylib

0x7fff8ee69000 - 0x7fff8ee6afff libdnsinfo.dylib (395.11.0 - compatibility 1.0.0) <853BAAA5-270F-3FDC-B025-D448DB72E1C3> /usr/lib/system/libdnsinfo.dylib

0x7fff8eeee000 - 0x7fff8ef21ff7 com.apple.GSS (2.2 - 2.0) <971395D0-B9D0-3FDE-B23F-6F9D0A2FB95F> /System/Library/Frameworks/GSS.framework/Versions/A/GSS

0x7fff8ef6a000 - 0x7fff8f54efff libBLAS.dylib (??? - ???) <C34F6D88-187F-33DC-8A68-C0C9D1FA36DF> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.fr amework/Versions/A/libBLAS.dylib

0x7fff8f579000 - 0x7fff8f5bffff libcurl.4.dylib (7.0.0 - compatibility 7.0.0) <2C442396-1006-3765-92D2-60869D4641CE> /usr/lib/libcurl.4.dylib

0x7fff8f5c0000 - 0x7fff8f5d2ff7 libz.1.dylib (1.2.5 - compatibility 1.0.0) <30CBEF15-4978-3DED-8629-7109880A19D4> /usr/lib/libz.1.dylib

0x7fff8f5d3000 - 0x7fff8f847fff com.apple.CoreImage (7.99.1 - 1.0.1) <4BB09B79-275B-364C-9466-0FF36ABB1218> /System/Library/Frameworks/QuartzCore.framework/Versions/A/Frameworks/CoreImage .framework/Versions/A/CoreImage

0x7fff8fce7000 - 0x7fff8fce8fff liblangid.dylib (??? - ???) <CACBE3C3-2F7B-3EED-B50E-EDB73F473B77> /usr/lib/liblangid.dylib

0x7fff8fce9000 - 0x7fff90687a27 com.apple.CoreGraphics (1.600.0 - ???) <576777EA-921B-3D94-98C3-40A9CF8EBD18> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ CoreGraphics.framework/Versions/A/CoreGraphics

0x7fff90688000 - 0x7fff9071eff7 libvMisc.dylib (325.4.0 - compatibility 1.0.0) <642D8D54-F9F5-3FBB-A96C-EEFE94C6278B> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.fr amework/Versions/A/libvMisc.dylib

0x7fff9072d000 - 0x7fff90901ff7 com.apple.CoreFoundation (6.7.2 - 635.21) <62A3402E-A4E7-391F-AD20-1EF20236CE1B> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation

0x7fff90902000 - 0x7fff90907ff7 libsystem_network.dylib (??? - ???) <5DE7024E-1D2D-34A2-80F4-08326331A75B> /usr/lib/system/libsystem_network.dylib

0x7fff90908000 - 0x7fff90a15fff libJP2.dylib (??? - ???) <6AF1F5FC-34D4-3278-BEBB-0712B81890B4> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ ImageIO.framework/Versions/A/Resources/libJP2.dylib

0x7fff90a16000 - 0x7fff90a18fff libCVMSPluginSupport.dylib (??? - ???) <982F1ED4-3CBB-3161-8BEA-8A980C27FCC1> /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libCVMSPluginS upport.dylib

0x7fff90a9d000 - 0x7fff90aa8ff7 com.apple.speech.recognition.framework (4.0.21 - 4.0.21) <6540EAF2-E3BF-3D2E-B4C1-F106180D6F20> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/SpeechRecogni tion.framework/Versions/A/SpeechRecognition

0x7fff90aa9000 - 0x7fff90ac4fff libexpat.1.dylib (7.2.0 - compatibility 7.0.0) <DDB91E75-A2FA-331F-8069-999127AC6A9D> /usr/lib/libexpat.1.dylib

0x7fff90b04000 - 0x7fff90b9eff7 com.apple.SearchKit (1.4.0 - 1.4.0) <4E70C394-773E-3A4B-A93C-59A88ABA9509> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/SearchK it.framework/Versions/A/SearchKit

0x7fff90bec000 - 0x7fff90becfff com.apple.CoreServices (53 - 53) <043C8026-8EDD-3241-B090-F589E24062EF> /System/Library/Frameworks/CoreServices.framework/Versions/A/CoreServices

0x7fff90bed000 - 0x7fff90beefff libDiagnosticMessagesClient.dylib (??? - ???) <3DCF577B-F126-302B-BCE2-4DB9A95B8598> /usr/lib/libDiagnosticMessagesClient.dylib

0x7fff911e3000 - 0x7fff911eefff com.apple.CommonAuth (2.2 - 2.0) <77E6F0D0-85B6-30B5-B99C-F57104DD2EBA> /System/Library/PrivateFrameworks/CommonAuth.framework/Versions/A/CommonAuth

0x7fff911ef000 - 0x7fff9126aff7 com.apple.print.framework.PrintCore (7.1 - 366.3) <C5F39A82-0E77-3AD6-906A-20DD2EE8D374> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ PrintCore.framework/Versions/A/PrintCore

0x7fff91523000 - 0x7fff91577ff7 com.apple.ScalableUserInterface (1.0 - 1) <33563775-C662-313D-B7FA-3D575A9F3D41> /System/Library/Frameworks/QuartzCore.framework/Versions/A/Frameworks/ScalableU serInterface.framework/Versions/A/ScalableUserInterface

0x7fff91676000 - 0x7fff91676fff libOpenScriptingUtil.dylib (??? - ???) <A7847713-F410-39C0-884F-A7188A18E742> /usr/lib/libOpenScriptingUtil.dylib

0x7fff91d3c000 - 0x7fff91d65fff libJPEG.dylib (??? - ???) <64D079F9-256A-323B-A837-84628B172F21> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ ImageIO.framework/Versions/A/Resources/libJPEG.dylib

0x7fff91ddd000 - 0x7fff91f3afff com.apple.audio.toolbox.AudioToolbox (1.7.3 - 1.7.3) <5F1E4695-BC74-3ADD-8345-627BCD68201A> /System/Library/Frameworks/AudioToolbox.framework/Versions/A/AudioToolbox

0x7fff91f3b000 - 0x7fff91fbefef com.apple.Metadata (10.7.0 - 627.37) <B9BEB598-B6F2-3BFF-A8F3-C3C87CD076AB> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/Metadat a.framework/Versions/A/Metadata

0x7fff92006000 - 0x7fff92047fff com.apple.QD (3.40 - ???) <47674D2C-BE88-388E-B1B0-03F08BFFE5FD> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ QD.framework/Versions/A/QD

0x7fff920a3000 - 0x7fff92198fff libiconv.2.dylib (7.0.0 - compatibility 7.0.0) <5C40E880-0706-378F-B864-3C2BD922D926> /usr/lib/libiconv.2.dylib

0x7fff9219d000 - 0x7fff921c8fff libpcre.0.dylib (1.1.0 - compatibility 1.0.0) <7D3CDB0A-840F-3856-8F84-B4A50E66431B> /usr/lib/libpcre.0.dylib

0x7fff92904000 - 0x7fff9292dfff com.apple.CoreVideo (1.7 - 70.3) <9A9D4058-9935-3B0A-B1A6-27EB78D02249> /System/Library/Frameworks/CoreVideo.framework/Versions/A/CoreVideo

0x7fff9292e000 - 0x7fff9294bff7 com.apple.openscripting (1.3.3 - ???) <F5E34F54-CE85-334B-8F25-53581D43960C> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/OpenScripting .framework/Versions/A/OpenScripting



External Modification Summary:

Calls made by other processes targeting this process:

task_for_pid: 0

thread_create: 0

thread_set_state: 0

Calls made by this process:

task_for_pid: 0

thread_create: 0

thread_set_state: 0

Calls made by all processes on this machine:

task_for_pid: 4267

thread_create: 0

thread_set_state: 0



VM Region Summary:

ReadOnly portion of Libraries: Total=143.3M resident=54.1M(38%) swapped_out_or_unallocated=89.2M(62%)

Writable regions: Total=96.9M written=30.2M(31%) resident=36.1M(37%) swapped_out=0K(0%) unallocated=60.9M(63%)


REGION TYPE VIRTUAL

=========== =======

MALLOC 86.3M

MALLOC guard page 48K

STACK GUARD 56.0M

Stack 8712K

VM_ALLOCATE 688K

__CI_BITMAP 80K

__DATA 10.9M

__LINKEDIT 51.0M

__TEXT 92.3M

__UNICODE 544K

mapped file 1.0G

shared memory 12K

=========== =======

TOTAL 1.3G

Mac mini, OS X Server

Posted on May 16, 2013 7:55 AM

Reply
2 replies

May 16, 2013 8:10 AM in response to Ryan Barclay

Update:


Ignore my comment about it crashing with low free memory - we've just had a crash with plenty of free memory.


httpd crashed on this thread (OS side):


Thread 1 Crashed:

0 libsystem_kernel.dylib 0x00007fff910eb192 __workq_kernreturn + 10

1 libsystem_c.dylib 0x00007fff8fe96594 _pthread_wqthread + 758

2 libsystem_c.dylib 0x00007fff8fe97b85 start_wqthread + 13

May 31, 2013 7:30 AM in response to Ryan Barclay

Update:


This has now been fixed.


I thought I would provide the solution for anyone else having the same problem.


We simply has some faulty memory modules installed on the server. The problem was intermittent and running memtest would only sometimes yield errors.


After replacing both of the 8GB modules with new ones, we are no longer experiencing any crashes (as of 24 hours uptime).


Moral of the story: don't always expect it to be a software problem, hardware can go wrong sometimes too!

httpd crashes on 10.7.5 when free memory is low

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