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From "Gordon Sim (JIRA)" <qpid-...@incubator.apache.org>
Subject [jira] Assigned: (QPID-1725) Deadlock between ManagementBroker::userLock and LinkRegistry::lock
Date Wed, 11 Mar 2009 16:26:50 GMT

     [ https://issues.apache.org/jira/browse/QPID-1725?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gordon Sim reassigned QPID-1725:
--------------------------------

    Assignee: Gordon Sim

> Deadlock between ManagementBroker::userLock and LinkRegistry::lock
> ------------------------------------------------------------------
>
>                 Key: QPID-1725
>                 URL: https://issues.apache.org/jira/browse/QPID-1725
>             Project: Qpid
>          Issue Type: Bug
>          Components: C++ Broker
>            Reporter: Gordon Sim
>            Assignee: Gordon Sim
>            Priority: Critical
>             Fix For: M5
>
>
> Dispatching a management method holds the userLock in ManagementBroker; it may then require
the lock in the LinkRegistry if it is to declare a link or bridge.
> Linkregistry::notifyConnection() firsttakes the Linkregistry lock, then as part of establishing
the connection it raises a management event which requires the managementBrokers userLock.
> Thread 5 (Thread -1208362080 (LWP 28312)):
> #0  0x45b8b410 in __kernel_vsyscall ()
> #1  0x45f0b97e in __lll_mutex_lock_wait () from /lib/libpthread.so.0
> #2  0x45f08247 in _L_mutex_lock_340 () from /lib/libpthread.so.0
> #3  0x45f0819f in pthread_mutex_lock () from /lib/libpthread.so.0
> #4  0x45c7dd29 in pthread_mutex_lock () from /lib/libc.so.6
> #5  0x00edf33d in qpid::management::ManagementBroker::periodicProcessing ()
> #6  0x00ee00a6 in qpid::management::ManagementBroker::Periodic::fire ()
> #7  0x00eceafb in qpid::broker::Timer::run ()
> #8  0x00a01c11 in qpid::sys::(anonymous namespace)::runRunnable ()
> #9  0x45f0640b in start_thread () from /lib/libpthread.so.0
> #10 0x45c71b7e in clone () from /lib/libc.so.6
> Thread 4 (Thread -1218851936 (LWP 28313)):
> #0  0x45b8b410 in __kernel_vsyscall ()
> #1  0x45f0b97e in __lll_mutex_lock_wait () from /lib/libpthread.so.0
> #2  0x45f08247 in _L_mutex_lock_340 () from /lib/libpthread.so.0
> #3  0x45f0819f in pthread_mutex_lock () from /lib/libpthread.so.0
> #4  0x45c7dd29 in pthread_mutex_lock () from /lib/libc.so.6
> #5  0x00e715cb in qpid::broker::LinkRegistry::periodicMaintenance ()
> #6  0x00e71fa8 in qpid::broker::LinkRegistry::Periodic::fire ()
> #7  0x00eceafb in qpid::broker::Timer::run ()
> #8  0x00a01c11 in qpid::sys::(anonymous namespace)::runRunnable ()
> #9  0x45f0640b in start_thread () from /lib/libpthread.so.0
> #10 0x45c71b7e in clone () from /lib/libc.so.6
> Thread 3 (Thread -1229341792 (LWP 28314)):
> #0  0x45b8b410 in __kernel_vsyscall ()
> #1  0x45f0967c in pthread_cond_timedwait@@GLIBC_2.3.2 ()
> #2  0x45c7dbf4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/libc.so.6
> #3  0x00ecebf0 in qpid::broker::Timer::run ()
> #4  0x00a01c11 in qpid::sys::(anonymous namespace)::runRunnable ()
> #5  0x45f0640b in start_thread () from /lib/libpthread.so.0
> #6  0x45c71b7e in clone () from /lib/libc.so.6
> Thread 2 (Thread -1239831648 (LWP 28317)):
> #0  0x45b8b410 in __kernel_vsyscall ()
> #1  0x45f0b97e in __lll_mutex_lock_wait () from /lib/libpthread.so.0
> #2  0x45f08247 in _L_mutex_lock_340 () from /lib/libpthread.so.0
> #3  0x45f0819f in pthread_mutex_lock () from /lib/libpthread.so.0
> #4  0x45c7dd29 in pthread_mutex_lock () from /lib/libc.so.6
> #5  0x00e6f1bc in qpid::broker::LinkRegistry::declare ()                 <--- LinkRegistry::lock
required
> #6  0x00e6b2d1 in qpid::broker::Link::ManagementMethod ()
> #7  0x00dd9ae5 in qmf::org::apache::qpid::broker::Link::doMethod ()
> #8  0x00ede600 in qpid::management::ManagementBroker::handleMethodRequestLH ()
> #9  0x00ee811c in qpid::management::ManagementBroker::dispatchAgentCommandLH ()
> #10 0x00ee8650 in qpid::management::ManagementBroker::dispatchCommand () <--- ManagementBroker::userLock
held
> #11 0x00eebbf3 in qpid::broker::ManagementExchange::route ()
> #12 0x00eaab9d in qpid::broker::SemanticState::route ()
> #13 0x00eabeea in qpid::broker::SemanticState::handle ()
> #14 0x00ec3412 in qpid::broker::SessionState::handleContent ()
> #15 0x00ec3a03 in qpid::broker::SessionState::handleIn ()
> #16 0x00ec73eb in qpid::framing::Handler<qpid::framing::AMQFrame&>::MemFunRef<qp
id::framing::Handler<qpid::framing::AMQFrame&>::InOutHandlerInterface, &(qpid::f
raming::Handler<qpid::framing::AMQFrame&>::InOutHandlerInterface::handleIn(qpid:
:framing::AMQFrame&))>::handle ()
> #17 0x00a2ddaf in qpid::amqp_0_10::SessionHandler::handleIn ()
> #18 0x00ec73eb in qpid::framing::Handler<qpid::framing::AMQFrame&>::MemFunRef<qp
id::framing::Handler<qpid::framing::AMQFrame&>::InOutHandlerInterface, &(qpid::f
raming::Handler<qpid::framing::AMQFrame&>::InOutHandlerInterface::handleIn(qpid:
:framing::AMQFrame&))>::handle ()
> #19 0x00e384ac in qpid::broker::Connection::received ()
> #20 0x00bc3602 in ?? ()
> #21 0xb380134c in ?? ()
> #22 0x09d82608 in ?? ()
> #23 0x09d851b8 in ?? ()
> #24 0x45c7dd55 in pthread_mutex_unlock () from /lib/libc.so.6
> #25 0x00ba3773 in ?? ()
> #26 0xb38012a8 in ?? ()
> #27 0x09d825f8 in ?? ()
> #28 0x09d825f8 in ?? ()
> #29 0xb6199dd8 in ?? ()
> #30 0x000000c1 in ?? ()
> #31 0x00ba47fd in ?? ()
> #32 0x09d80568 in ?? ()
> #33 0x09d825f8 in ?? ()
> #34 0x00000002 in ?? ()
> #35 0x00000001 in ?? ()
> #36 0xb6199e68 in ?? ()
> #37 0x00bac664 in ?? ()
> #38 0x09d815e0 in ?? ()
> #39 0x09d825f8 in ?? ()
> #40 0xb6199e48 in ?? ()
> #41 0x45c7dd55 in pthread_mutex_unlock () from /lib/libc.so.6
> Thread 1 (Thread -1208158480 (LWP 28311)):
> #0  0x45b8b410 in __kernel_vsyscall ()
> #1  0x45f0b97e in __lll_mutex_lock_wait () from /lib/libpthread.so.0
> #2  0x45f08247 in _L_mutex_lock_340 () from /lib/libpthread.so.0
> #3  0x45f0819f in pthread_mutex_lock () from /lib/libpthread.so.0
> #4  0x45c7dd29 in pthread_mutex_lock () from /lib/libc.so.6
> #5  0x00ee012a in qpid::management::ManagementBroker::raiseEvent () <--- ManagementBroker::userLock
required
> #6  0x00e6ac23 in qpid::broker::Link::established ()
> #7  0x00e70805 in qpid::broker::LinkRegistry::notifyConnection ()   <--- LinkRegistry::lock
held
> #8  0x00e3b57d in qpid::broker::Connection::Connection ()
> #9  0x00bc80ee in ?? ()
> #10 0x09d84dcc in ?? ()
> #11 0x09d84d68 in ?? ()
> #12 0x09d7ef88 in ?? ()
> #13 0x09d85b24 in ?? ()
> #14 0x00000001 in ?? ()
> #15 0x00000000 in ?? ()

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