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Posted to issues@mesos.apache.org by "haosdent (JIRA)" <ji...@apache.org> on 2016/06/17 01:53:05 UTC
[jira] [Commented] (MESOS-5629) Agent segfaults after request to
'/files/browse'
[ https://issues.apache.org/jira/browse/MESOS-5629?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15335195#comment-15335195 ]
haosdent commented on MESOS-5629:
---------------------------------
hi, [~greggomann] Could not open https://github.com/mesosphere/mesos-private/blob/greg/1.0-w-fixes/src/slave/slave.cpp#L5704-L5712
> Agent segfaults after request to '/files/browse'
> ------------------------------------------------
>
> Key: MESOS-5629
> URL: https://issues.apache.org/jira/browse/MESOS-5629
> Project: Mesos
> Issue Type: Bug
> Environment: CentOS 7, Mesos 1.0.0-rc1 with patches
> Reporter: Greg Mann
> Assignee: Greg Mann
> Priority: Blocker
> Labels: authorization, mesosphere, security
> Fix For: 1.0.0
>
>
> We observed a number of agent segfaults today on an internal testing cluster. Here is a log excerpt:
> {code}
> Jun 16 17:12:28 ip-10-10-0-87 mesos-slave[24818]: I0616 17:12:28.522925 24830 status_update_manager.cpp:392] Received status update acknowledgement (UUID: e79ab0f4-2fa2-4df2-9b59-89b97a482167) for task datadog-monitor.804b138b-33e5-11e6-ac16-566ccbdde23e of framework 6d4248cd-2832-4152-b5d0-defbf36f6759-0000
> Jun 16 17:12:28 ip-10-10-0-87 mesos-slave[24818]: I0616 17:12:28.523006 24830 status_update_manager.cpp:824] Checkpointing ACK for status update TASK_RUNNING (UUID: e79ab0f4-2fa2-4df2-9b59-89b97a482167) for task datadog-monitor.804b138b-33e5-11e6-ac16-566ccbdde23e of framework 6d4248cd-2832-4152-b5d0-defbf36f6759-0000
> Jun 16 17:12:29 ip-10-10-0-87 mesos-slave[24818]: I0616 17:12:29.147181 24824 http.cpp:192] HTTP GET for /slave(1)/state from 10.10.0.87:33356
> Jun 16 17:12:29 ip-10-10-0-87 mesos-slave[24818]: *** Aborted at 1466097149 (unix time) try "date -d @1466097149" if you are using GNU date ***
> Jun 16 17:12:29 ip-10-10-0-87 mesos-slave[24818]: PC: @ 0x7ff4d68b12a3 (unknown)
> Jun 16 17:12:29 ip-10-10-0-87 mesos-slave[24818]: *** SIGSEGV (@0x0) received by PID 24818 (TID 0x7ff4d31ab700) from PID 0; stack trace: ***
> Jun 16 17:12:29 ip-10-10-0-87 mesos-slave[24818]: @ 0x7ff4d6431100 (unknown)
> Jun 16 17:12:29 ip-10-10-0-87 mesos-slave[24818]: @ 0x7ff4d68b12a3 (unknown)
> Jun 16 17:12:29 ip-10-10-0-87 mesos-slave[24818]: @ 0x7ff4d7eced33 process::dispatch<>()
> Jun 16 17:12:29 ip-10-10-0-87 mesos-slave[24818]: @ 0x7ff4d7e7aad7 _ZNSt17_Function_handlerIFN7process6FutureIbEERK6OptionISsEEZN5mesos8internal5slave9Framework15recoverExecutorERKNSA_5state13ExecutorStateEEUlS6_E_E9_M_invokeERKSt9_Any_dataS6_
> Jun 16 17:12:29 ip-10-10-0-87 mesos-slave[24818]: @ 0x7ff4d7bd1752 mesos::internal::FilesProcess::authorize()
> Jun 16 17:12:29 ip-10-10-0-87 mesos-slave[24818]: @ 0x7ff4d7bd1bea mesos::internal::FilesProcess::browse()
> Jun 16 17:12:29 ip-10-10-0-87 mesos-slave[24818]: @ 0x7ff4d7bd6e43 std::_Function_handler<>::_M_invoke()
> Jun 16 17:12:29 ip-10-10-0-87 mesos-slave[24818]: @ 0x7ff4d85478cb _ZZZN7process11ProcessBase5visitERKNS_9HttpEventEENKUlRKNS_6FutureI6OptionINS_4http14authentication20AuthenticationResultEEEEE0_clESC_ENKUlRKNS4_IbEEE1_clESG_
> Jun 16 17:12:29 ip-10-10-0-87 mesos-slave[24818]: @ 0x7ff4d8551341 process::ProcessManager::resume()
> Jun 16 17:12:29 ip-10-10-0-87 mesos-slave[24818]: @ 0x7ff4d8551647 _ZNSt6thread5_ImplISt12_Bind_simpleIFZN7process14ProcessManager12init_threadsEvEUt_vEEE6_M_runEv
> Jun 16 17:12:29 ip-10-10-0-87 mesos-slave[24818]: @ 0x7ff4d6909220 (unknown)
> Jun 16 17:12:29 ip-10-10-0-87 mesos-slave[24818]: @ 0x7ff4d6429dc5 start_thread
> Jun 16 17:12:29 ip-10-10-0-87 mesos-slave[24818]: @ 0x7ff4d615728d __clone
> Jun 16 17:12:29 ip-10-10-0-87 systemd[1]: dcos-mesos-slave.service: main process exited, code=killed, status=11/SEGV
> Jun 16 17:12:29 ip-10-10-0-87 systemd[1]: Unit dcos-mesos-slave.service entered failed state.
> Jun 16 17:12:29 ip-10-10-0-87 systemd[1]: dcos-mesos-slave.service failed.
> Jun 16 17:12:34 ip-10-10-0-87 systemd[1]: dcos-mesos-slave.service holdoff time over, scheduling restart.
> {code}
> In every case, the stack trace indicates one of the {{/files/*}} endpoints; I observed this a number of times coming from {{browse()}}, and twice from {{read()}}.
> The agent was built from the 1.0.0-rc1 branch, with two cherry-picks applied: [this|https://reviews.apache.org/r/48563/] and [this|https://reviews.apache.org/r/48566/], which were done to repair a different [segfault issue|https://issues.apache.org/jira/browse/MESOS-5587] on the master.
> Thanks go to [~bmahler] for digging into this a bit and discovering a possible cause [here|https://github.com/mesosphere/mesos-private/blob/greg/1.0-w-fixes/src/slave/slave.cpp#L5704-L5712], where use of {{defer()}} may be necessary to keep execution in the correct context.
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