noreply at mythtv
May 8, 2012, 12:40 AM
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Ticket #10702: mythbackend hanging
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#10702: mythbackend hanging
------------------------------+--------------------------------------------
Reporter: anders.franzen@… | Type: Bug Report - Hang/Deadlock
Status: new | Priority: major
Milestone: 0.26 | Component: MythTV - General
Version: Master Head | Severity: medium
Keywords: backend hanging | Ticket locked: 0
------------------------------+--------------------------------------------
Just start the mythbackend and let it sitt for awhile, it will lookup
completly. Also after doing exiting a livetv view, some resources dont get
released, so running out of tv-cards/tuners very quick.
Connect to port 6543 dont answers any commands:
socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 3
connect(3, {sa_family=AF_INET, sin_port=htons(6543),
sin_addr=inet_addr("192.168.1.67")}, 16) = 0
sendmsg(3, {msg_name(0)=NULL, msg_iov(2)=[{"35 ", 8},
{"MYTH_PROTO_VERSION 74 SingingPot"..., 35}], msg_controllen=0,
msg_flags=0}, 0) = 43
recvfrom(3,
Hanging in recv forever.
backtrace and thread info from backend:
(gdb) bt
#0 0x000000390700b3b4 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1 0x0000003a6d672fe3 in ?? () from /usr/lib64/libQtCore.so.4
#2 0x0000003a6d66f9f5 in QMutex::lock() () from /usr/lib64/libQtCore.so.4
#3 0x00000000004a5d44 in QMutexLocker (this=0x27097f0, request=...) at
/usr/include/QtCore/qmutex.h:102
#4 Scheduler::Reschedule (this=0x27097f0, request=...) at
scheduler.cpp:1634
#5 0x0000000000473986 in MainServer::customEvent (this=0x2869fb0,
e=0x7f8c6c017d60) at mainserver.cpp:1009
#6 0x0000003a6d77162c in QObject::event(QEvent*) () from
/usr/lib64/libQtCore.so.4
#7 0x0000003a6d75d0dc in QCoreApplication::notifyInternal(QObject*,
QEvent*) () from /usr/lib64/libQtCore.so.4
#8 0x0000003a6d7608c5 in
QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) ()
from /usr/lib64/libQtCore.so.4
#9 0x0000003a6d788133 in ?? () from /usr/lib64/libQtCore.so.4
#10 0x00000033cd841e33 in g_main_context_dispatch () from
/lib64/libglib-2.0.so.0
#11 0x00000033cd842610 in ?? () from /lib64/libglib-2.0.so.0
#12 0x00000033cd8428ad in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#13 0x0000003a6d7882cf in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() from /usr/lib64/libQtCore.so.4
#14 0x0000003a6d75c472 in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib64/libQtCore.so.4
#15 0x0000003a6d75c6bc in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib64/libQtCore.so.4
#16 0x0000003a6d760b7b in QCoreApplication::exec() () from
/usr/lib64/libQtCore.so.4
#17 0x000000000050ae75 in run_backend (cmdline=<value optimized out>) at
main_helpers.cpp:658
#18 0x000000000044d4e3 in main (argc=8, argv=<value optimized out>) at
main.cpp:127
(gdb)
(gdb) info threads
31 Thread 0x7f8c8f26e700 (LWP 7192) 0x000000390700b71e in
pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
30 Thread 0x7f8c8ea6d700 (LWP 7193) 0x000000390700b71e in
pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
29 Thread 0x7f8c8e26c700 (LWP 7195) 0x0000003906cd9093 in select ()
from /lib64/libc.so.6
28 Thread 0x7f8c8da6b700 (LWP 7196) 0x000000390700b71e in
pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
27 Thread 0x7f8c8ccb8700 (LWP 7204) 0x000000390700b71e in
pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
26 Thread 0x7f8c77fff700 (LWP 7206) 0x000000390700b71e in
pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
25 Thread 0x7f8c777fe700 (LWP 7210) 0x000000390700b71e in
pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
24 Thread 0x7f8c76ffd700 (LWP 7211) 0x000000390700b3b4 in
pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
23 Thread 0x7f8c767fc700 (LWP 7216) 0x000000390700b71e in
pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
22 Thread 0x7f8c75ffb700 (LWP 7217) 0x000000390700b3b4 in
pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
21 Thread 0x7f8c757fa700 (LWP 7219) 0x000000390700b71e in
pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
20 Thread 0x7f8c74ff9700 (LWP 7220) 0x000000390700b71e in
pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
19 Thread 0x7f8c57fff700 (LWP 7221) 0x000000390700b71e in
pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
18 Thread 0x7f8c577fe700 (LWP 7222) 0x000000390700b71e in
pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
17 Thread 0x7f8c56ffd700 (LWP 7223) 0x000000390700b71e in
pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
16 Thread 0x7f8c567fc700 (LWP 7228) 0x000000390700b71e in
pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
15 Thread 0x7f8c55ffb700 (LWP 7229) 0x000000390700b3b4 in
pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
14 Thread 0x7f8c557fa700 (LWP 7231) 0x000000390700b3b4 in
pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
13 Thread 0x7f8c54ff9700 (LWP 7233) 0x000000390700b71e in
pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
12 Thread 0x7f8c37fff700 (LWP 7234) 0x000000390700b71e in
pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
11 Thread 0x7f8c377fe700 (LWP 7235) 0x000000390700b71e in
pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
10 Thread 0x7f8c36ffd700 (LWP 7237) 0x000000390700b3b4 in
pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
9 Thread 0x7f8c367fc700 (LWP 7243) 0x0000003906cd7283 in poll () from
/lib64/libc.so.6
---Type <return> to continue, or q <return> to quit---
8 Thread 0x7f8c037fe700 (LWP 7322) 0x000000390700b3b4 in
pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
7 Thread 0x7f8c1ce5b700 (LWP 7575) 0x000000390700e6ed in nanosleep ()
from /lib64/libpthread.so.0
6 Thread 0x7f8c03fff700 (LWP 7576) 0x000000390700e6ed in nanosleep ()
from /lib64/libpthread.so.0
5 Thread 0x7f8bfbfff700 (LWP 7577) 0x000000390700b3b4 in
pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
4 Thread 0x7f8bfb7fe700 (LWP 7578) 0x000000390700b3b4 in
pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
3 Thread 0x7f8c1dffb700 (LWP 14647) 0x000000390700b71e in
pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
2 Thread 0x7f8c1e7fc700 (LWP 14648) 0x0000003906cd9093 in select ()
from /lib64/libc.so.6
* 1 Thread 0x7f8c95306840 (LWP 7191) 0x000000390700b3b4 in
pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
--
Ticket URL: <http://code.mythtv.org/trac/ticket/10702>
MythTV <http://code.mythtv.org/trac>
MythTV Media Center
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Ticket #10702: mythbackend hanging
