Date: Mon, 2 Jul 2012 11:44:05 GMT From: Michael Letzgus <michael.letzgus@uni-bielefeld.de> To: freebsd-gnats-submit@FreeBSD.org Subject: ports/169598: winbind failure on ssh login, failed to mlock memory: Cannot allocate memory (12) Message-ID: <201207021144.q62Bi5k9088064@red.freebsd.org> Resent-Message-ID: <201207021150.q62Bo61v025085@freefall.freebsd.org>
next in thread | raw e-mail | index | archive | help
>Number: 169598 >Category: ports >Synopsis: winbind failure on ssh login, failed to mlock memory: Cannot allocate memory (12) >Confidential: no >Severity: serious >Priority: high >Responsible: freebsd-ports-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon Jul 02 11:50:06 UTC 2012 >Closed-Date: >Last-Modified: >Originator: Michael Letzgus >Release: FreeBSD 9.0R >Organization: Universität Bielefeld >Environment: FreeBSD uche-pc1-pc1.dyn.uni-bielefeld.de 9.0-RELEASE FreeBSD 9.0-RELEASE #0: Tue Jan 3 07:46:30 UTC 2012 root@farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64 >Description: When trying to login via ssh and pam_winbind.so, sometimes (after a few hours without errors) this error occurs and login is not possible: Debug-Output from winbinnd: Plain-text authentication for user AD\mletzgus2 returned NT_STATUS_OK (PAM: 0) Finished processing child request 13 Writing 3893 bytes to parent timed_events_timeout: 3599/504701 select will use timeout of 3599.504701 seconds s3_event: Destroying timer event 0x80582c990 "tevent_req_timedout" failed to mlock memory: Resource temporarily unavailable (35) winbindd_add_memory_creds returned: NT_STATUS_NETWORK_BUSY wb_request_done[59289:PAM_AUTH]: NT_STATUS_NETWORK_BUSY s3_event: Schedule immediate event "tevent_queue_immediate_trigger": 0x80582c390 s3_event: Run immediate event "tevent_queue_immediate_trigger": 0x80582c390 winbind_client_response_written[59289:PAM_AUTH]: delivered response to client closing socket 26, client exited wbinfo -K ad\\mletzgus stops working, too: plaintext kerberos password authentication for [ad\mletzgus] failed (requesting cctype: FILE) Could not authenticate user [ad\mletzgus] with Kerberos (ccache: FILE) A couple of minutes befor the answer was: plaintext kerberos password authentication for [ad\mletzgus] succeeded (requesting cctype: FILE) credentials were put in: FILE:/tmp/krb5cc_0 So in principle it works... Just a guess: My System has 16GB RAM and was running rsync on a ZFS filesystem. ZFS may use a lot of memory - and winbinds error message was "failed to mlock memory: Resource temporarily unavailable (35)". Maybe there are not enough resources of something? CPU: 0.3% user, 0.0% nice, 0.4% system, 0.0% interrupt, 99.3% idle Mem: 42M Active, 83M Inact, 7770M Wired, 664K Cache, 218M Buf, 7897M Free Swap: 10G Total, 10G Free There are still 8 GB left... should be enough for winbind... >How-To-Repeat: * Set up FreeBSD as AD domain member * Lock a a large amount of memory (stress yout ZFS or use "memtest 5G") * try to authenticate:"wbinfo -K domain\\username" * tail -f \var\log\auth.log >Fix: Maybe(!) it's only some limit - but I can't figure out wht limit: When starting "memtest 5G", memtest says something like "got 4736MB (4966440960 bytes), trying mlock ...over system/pre-process limit, reducing..." What limit is that...? >Release-Note: >Audit-Trail: >Unformatted:
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201207021144.q62Bi5k9088064>