[mythtv-commits] Ticket #10571: deadlocked backend
MythTV
noreply at mythtv.org
Mon Apr 9 12:33:33 UTC 2012
#10571: deadlocked backend
-------------------------+--------------------------------------------
Reporter: brian@… | Type: Bug Report - Hang/Deadlock
Status: new | Priority: minor
Milestone: unknown | Component: MythTV - General
Version: Master Head | Severity: medium
Keywords: | Ticket locked: 0
-------------------------+--------------------------------------------
I seem to have a deadlocked backend using master @ 8a5977d. I will attach
the full threaded backtrace. I suspect the locked thread is this one:
{{{
Thread 1 (Thread 0xb63c4720 (LWP 3074)):
#0 0x0011d416 in __kernel_vsyscall ()
No symbol table info available.
#1 0x088a448c in pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
No locals.
#2 0x03459daa in ?? () from /usr/lib/libQtCore.so.4
No symbol table info available.
#3 0x034564b2 in QMutex::lock() () from /usr/lib/libQtCore.so.4
No symbol table info available.
#4 0x080f2885 in QMutexLocker (this=0xa30bf18, cardid=11, chanid=1024,
startts=..., recstatus=rsRecorded, recendts=...) at
/usr/include/qt4/QtCore/qmutex.h:102
No locals.
#5 Scheduler::UpdateRecStatus (this=0xa30bf18, cardid=11, chanid=1024,
startts=..., recstatus=rsRecorded, recendts=...) at scheduler.cpp:614
lockit = {val = 3214543840}
__FUNCTION__ = "UpdateRecStatus"
#6 0x080bc630 in MainServer::customEvent (this=0xa29a018, e=0xb72a808) at
mainserver.cpp:1052
tokens = {<QList<QString>> = {{p = {static shared_null = {ref =
{_q_value = 58927}, alloc = 0, begin = 0, end = 0, sharable = 1, array =
{0x0}}, d = 0xa619ce50}, d = 0xa619ce50}}, <No data fields>}
startts = {d = {d = 0xa61a3c08}}
recendts = {d = {d = 0xa61920d8}}
cardid = 11
chanid = 1024
recstatus = rsRecorded
me = 0xb72a808
message = {static null = {<No data fields>}, static shared_null =
{ref = {_q_value = 39469}, alloc = 0, size = 0, data = 0x368b49e, clean =
0, simpletext = 0, righttoleft = 0, asciiCache = 0, capacity = 0, reserved
= 0, array = {0}}, static shared_empty = {ref = {_q_value = 36551}, alloc
= 0, size = 0, data = 0x368b4b2, clean = 0, simpletext = 0, righttoleft =
0, asciiCache = 0, capacity = 0, reserved = 0, array = {0}}, d =
0xb3deae8, static codecForCStrings = 0x0}
error = {static null = {<No data fields>}, static shared_null =
{ref = {_q_value = 39469}, alloc = 0, size = 0, data = 0x368b49e, clean =
0, simpletext = 0, righttoleft = 0, asciiCache = 0, capacity = 0, reserved
= 0, array = {0}}, static shared_empty = {ref = {_q_value = 36551}, alloc
= 0, size = 0, data = 0x368b4b2, clean = 0, simpletext = 0, righttoleft =
0, asciiCache = 0, capacity = 0, reserved = 0, array = {0}}, d =
0x368b48c, static codecForCStrings = 0x0}
mod_me = warning: RTTI symbol not found for class 'QEvent'
{<QEvent> = {<No data fields>}, static MythEventMessage = 65534, static
MythUserMessage = 65533, static kUpdateTvProgressEventType = 65532, static
kExitToMainMenuEventType = 65531, static kMythPostShowEventType = 65530,
static kEnableDrawingEventType = 65529, static kDisableDrawingEventType =
65528, static kPushDisableDrawingEventType = 65527, static
kPopDisableDrawingEventType = 65526, static kLockInputDevicesEventType =
65525, static kUnlockInputDevicesEventType = 65524, static
kUpdateBrowseInfoEventType = 65523, message = {static null = {<No data
fields>}, static shared_null = {ref = {_q_value = 39469}, alloc = 0, size
= 0, data = 0x368b49e, clean = 0, simpletext = 0, righttoleft = 0,
asciiCache = 0, capacity = 0, reserved = 0, array = {0}}, static
shared_empty = {ref = {_q_value = 36551}, alloc = 0, size = 0, data =
0x368b4b2, clean = 0, simpletext = 0, righttoleft = 0, asciiCache = 0,
capacity = 0, reserved = 0, array = {0}}, d = 0x368b4a0, static
codecForCStrings = 0x0}, extradata = {<QList<QString>> = {{p = {static
shared_null = {ref = {_q_value = 58927}, alloc = 0, begin = 0, end = 0,
sharable = 1, array = {0x0}}, d = 0xa619d070}, d = 0xa619d070}}, <No data
fields>}}
broadcast = {<QList<QString>> = {{p = {static shared_null = {ref =
{_q_value = 58927}, alloc = 0, begin = 0, end = 0, sharable = 1, array =
{0x0}}, d = 0x368b414}, d = 0x368b414}}, <No data fields>}
receivers = {q_hash = {{d = 0x368b3e0, e = 0x368b3e0}}}
__FUNCTION__ = "customEvent"
#7 0x0356442c in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
No symbol table info available.
#8 0x0354f30a in QCoreApplicationPrivate::notify_helper(QObject*,
QEvent*) () from /usr/lib/libQtCore.so.4
No symbol table info available.
#9 0x0354f393 in QCoreApplication::notify(QObject*, QEvent*) () from
/usr/lib/libQtCore.so.4
No symbol table info available.
#10 0x0354f0bb in QCoreApplication::notifyInternal(QObject*, QEvent*) ()
from /usr/lib/libQtCore.so.4
No symbol table info available.
#11 0x03552c79 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int,
QThreadData*) () from /usr/lib/libQtCore.so.4
No symbol table info available.
#12 0x03552e0d in QCoreApplication::sendPostedEvents(QObject*, int) ()
from /usr/lib/libQtCore.so.4
No symbol table info available.
#13 0x0357c3c4 in ?? () from /usr/lib/libQtCore.so.4
No symbol table info available.
#14 0x095a0aa8 in g_main_dispatch (context=0x9e46c20) at
/build/buildd/glib2.0-2.28.6/./glib/gmain.c:2440
dispatch = 0x357c390
was_in_call = 0
user_data = 0x0
callback = 0
cb_funcs = 0x0
cb_data = 0x0
current_source_link = {data = 0x9e47698, next = 0x0}
need_destroy = <value optimized out>
source = 0x9e47698
current = 0x9e461c8
i = <value optimized out>
#15 g_main_context_dispatch (context=0x9e46c20) at
/build/buildd/glib2.0-2.28.6/./glib/gmain.c:3013
No locals.
#16 0x095a1270 in g_main_context_iterate (context=0x9e46c20,
block=156964896, dispatch=1, self=<value optimized out>) at
/build/buildd/glib2.0-2.28.6/./glib/gmain.c:3091
max_priority = 2147483647
timeout = 13327
some_ready = 1
nfds = <value optimized out>
allocated_nfds = <value optimized out>
fds = 0xa487d90
#17 0x095a1524 in g_main_context_iteration (context=0x9e46c20,
may_block=1) at /build/buildd/glib2.0-2.28.6/./glib/gmain.c:3154
retval = <value optimized out>
#18 0x0357c53c in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() from /usr/lib/libQtCore.so.4
No symbol table info available.
#19 0x0354e289 in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/libQtCore.so.4
No symbol table info available.
#20 0x0354e522 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
() from /usr/lib/libQtCore.so.4
No symbol table info available.
#21 0x03552ecc in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
No symbol table info available.
#22 0x0815ebd0 in run_backend (cmdline=...) at main_helpers.cpp:654
ismaster = 24
__FUNCTION__ = "run_backend"
fatal_error = false
runsched = false
httpStatus = 0x9ffc940
pHS = 0xa29a018
port = 6543
sched = 0xa30bf18
#23 0x08091a00 in main (argc=-670438560, argv=0x9009e777) at main.cpp:127
a = <incomplete type>
retval = <value optimized out>
mask = {static null = {<No data fields>}, static shared_null =
{ref = {_q_value = 39469}, alloc = 0, size = 0, data = 0x368b49e, clean =
0, simpletext = 0, righttoleft = 0, asciiCache = 0, capacity = 0, reserved
= 0, array = {0}}, static shared_empty = {ref = {_q_value = 36551}, alloc
= 0, size = 0, data = 0x368b4b2, clean = 0, simpletext = 0, righttoleft =
0, asciiCache = 0, capacity = 0, reserved = 0, array = {0}}, d =
0x9e6ef88, static codecForCStrings = 0x0}
__FUNCTION__ = "main"
cmdline = {<MythCommandLineParser> = {_vptr.MythCommandLineParser
= 0x8205da0, m_appname = {static null = {<No data fields>}, static
shared_null = {ref = {_q_value = 39469}, alloc = 0, size = 0, data =
0x368b49e, clean = 0, simpletext = 0, righttoleft = 0, asciiCache = 0,
capacity = 0, reserved = 0, array = {0}}, static shared_empty = {ref =
{_q_value = 36551}, alloc = 0, size = 0, data = 0x368b4b2, clean = 0,
simpletext = 0, righttoleft = 0, asciiCache = 0, capacity = 0, reserved =
0, array = {0}}, d = 0x9e3aba0, static codecForCStrings = 0x0},
m_optionedArgs = {{d = 0x9e3b300, e = 0x9e3b300}}, m_namedArgs = {{d =
0x9e3b248, e = 0x9e3b248}}, m_passthroughActive = false,
m_overridesImported = true, m_verbose = false}, <No data fields>}
daemonize = true
}}}
--
Ticket URL: <http://code.mythtv.org/trac/ticket/10571>
MythTV <http://code.mythtv.org/trac>
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