| Summary: | kio_thumbnail produces segfault messages in dmesg | ||
|---|---|---|---|
| Product: | [Frameworks and Libraries] kio | Reporter: | Guillermo Belli <gbelli> |
| Component: | thumbnail | Assignee: | Malte Starostik <malte> |
| Status: | RESOLVED FIXED | ||
| Severity: | crash | CC: | alessandro-ghersi, andresbajotierra, annma, kde-bugs, kdedevel, nbensa, reavertm, slashdevdsp, sts |
| Priority: | NOR | ||
| Version: | unspecified | ||
| Target Milestone: | --- | ||
| Platform: | Ubuntu | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
|
Description
Guillermo Belli
2009-07-12 10:29:54 UTC
/Me too. KDE 4.2.96. Ubuntu packages (from Karmic) *** Bug 199749 has been marked as a duplicate of this bug. *** *** Bug 199474 has been marked as a duplicate of this bug. *** Not perfect one, but better than nothing:
Using Qt 4.5.1, Gentoo, KDE from 4.3 branch, rebuilt 15 July 2009
Program terminated with signal 11, Segmentation fault.
---Type <return> to continue, or q <return> to quit---
#0 0x00007fc0f95d035c in ?? () from /lib/libgcc_s.so.1
(gdb) bt
#0 0x00007fc0f95d035c in ?? () from /lib/libgcc_s.so.1
#1 0x00007fc0f95d0bb0 in _Unwind_Backtrace () from /lib/libgcc_s.so.1
#2 0x00007fc0fd4c2452 in backtrace () from /lib/libc.so.6
#3 0x00007fc0ff59cfbc in kRealBacktrace(int) () from /usr/lib64/libkdecore.so.5
#4 0x00007fc0fe6c32eb in KIconLoader::~KIconLoader() () from /usr/lib64/libkdeui.so.5
#5 0x00007fc0fd3fc6fd in exit () from /lib/libc.so.6
#6 0x00007fc0fec6db40 in ?? () from /usr/lib64/libkio.so.5
#7 <signal handler called>
#8 0x0000000000000001 in ?? ()
#9 0x00007fc0fdcca79c in QPainter::end() () from /usr/lib64/qt4/libQtGui.so.4
#10 0x00007fc0fdccb06a in QPainter::~QPainter() () from /usr/lib64/qt4/libQtGui.so.4
---Type <return> to continue, or q <return> to quit---
#11 0x00007fc0f504dc43 in ThumbnailProtocol::thumbForDirectory (this=0x7fff081581e0, directory=@0x7fff08158000)
at /usr/src/debug/kde-base/kdebase-kioslaves-4.3.9999/kdebase-kioslaves-4.3.9999/kioslave/thumbnail/thumbnail.cpp:648
#12 0x00007fc0f504e7bc in ThumbnailProtocol::get (this=0x7fff081581e0, url=@0x7fff08158000)
at /usr/src/debug/kde-base/kdebase-kioslaves-4.3.9999/kdebase-kioslaves-4.3.9999/kioslave/thumbnail/thumbnail.cpp:247
#13 0x00007fc0fec72df0 in KIO::SlaveBase::dispatch(int, QByteArray const&) () from /usr/lib64/libkio.so.5
#14 0x00007fc0fec73420 in KIO::SlaveBase::dispatchLoop() () from /usr/lib64/libkio.so.5
#15 0x00007fc0f504fc47 in kdemain (argc=4, argv=0x2551e10)
at /usr/src/debug/kde-base/kdebase-kioslaves-4.3.9999/kdebase-kioslaves-4.3.9999/kioslave/thumbnail/thumbnail.cpp:136
#16 0x000000000040718f in _start ()
We got a core dump: http://www.researchut.com/~rrs/tmp/core.6513 @Ritesh Raj Sarraf: could you use it to try to get a backtrace from it too ? (there are some hints at http://www.kdedevelopers.org/node/3921) Thanks A bit better than previous one (with debug symbols in kdelibs)
(gdb) bt
#0 0x00007f16fdffa35c in ?? () from /lib/libgcc_s.so.1
#1 0x00007f16fdffabb0 in _Unwind_Backtrace () from /lib/libgcc_s.so.1
#2 0x00007f1701ef9452 in backtrace () from /lib/libc.so.6
#3 0x00007f17040754b9 in kRealBacktrace (levels=-1)
at /var/tmp/portage/kde-base/kdelibs-4.3.9999/work/kdelibs-4.3.9999/kdecore/io/kdebug.cpp:594
#4 0x00007f170310b5b8 in kBacktrace (levels=-1)
at /var/tmp/portage/kde-base/kdelibs-4.3.9999/work/kdelibs-4.3.9999/kdecore/io/kdebug.h:98
#5 0x00007f170310355e in KIconLoader::~KIconLoader (this=0xf5a1e0, __in_chrg=<value optimized out>,
__in_chrg=<value optimized out>)
at /var/tmp/portage/kde-base/kdelibs-4.3.9999/work/kdelibs-4.3.9999/kdeui/icons/kiconloader.cpp:557
#6 0x00007f1703102a1c in <anonymous struct>::destroy(void) ()
---Type <return> to continue, or q <return> to quit---
at /var/tmp/portage/kde-base/kdelibs-4.3.9999/work/kdelibs-4.3.9999/kdeui/icons/kiconloader.cpp:1696
#7 0x00007f170308f9c1 in KCleanUpGlobalStatic::~KCleanUpGlobalStatic (this=0x7f1703575aa8, __in_chrg=<value optimized out>,
__in_chrg=<value optimized out>)
at /var/tmp/portage/kde-base/kdelibs-4.3.9999/work/kdelibs-4.3.9999/kdecore/kernel/kglobal.h:62
#8 0x00007f1701e336fd in exit () from /lib/libc.so.6
#9 0x00007f1703708390 in sigsegv_handler (sig=11)
at /var/tmp/portage/kde-base/kdelibs-4.3.9999/work/kdelibs-4.3.9999/kio/kio/slavebase.cpp:745
#10 <signal handler called>
#11 0x0000000000000001 in ?? ()
#12 0x00007f170270179c in QPainter::end() () from /usr/lib64/qt4/libQtGui.so.4
#13 0x00007f170270206a in QPainter::~QPainter() () from /usr/lib64/qt4/libQtGui.so.4
---Type <return> to continue, or q <return> to quit---
#14 0x00007f16f9a2bc43 in ThumbnailProtocol::thumbForDirectory (this=0x7fff0cc46e60, directory=@0x7fff0cc46ca0)
at /var/tmp/portage/kde-base/kdebase-kioslaves-4.3.9999/work/kdebase-kioslaves-4.3.9999/kioslave/thumbnail/thumbnail.cpp:648
#15 0x00007f16f9a2c7bc in ThumbnailProtocol::get (this=0x7fff0cc46e60, url=@0x7fff0cc46ca0)
at /var/tmp/portage/kde-base/kdebase-kioslaves-4.3.9999/work/kdebase-kioslaves-4.3.9999/kioslave/thumbnail/thumbnail.cpp:247
#16 0x00007f170370abfe in KIO::SlaveBase::dispatch (this=0x7fff0cc46e60, command=67, data=@0x7fff0cc46d90)
at /var/tmp/portage/kde-base/kdelibs-4.3.9999/work/kdelibs-4.3.9999/kio/kio/slavebase.cpp:1012
#17 0x00007f170370b9de in KIO::SlaveBase::dispatchLoop (this=0x7fff0cc46e60)
at /var/tmp/portage/kde-base/kdelibs-4.3.9999/work/kdelibs-4.3.9999/kio/kio/slavebase.cpp:282
#18 0x00007f16f9a2dc47 in kdemain (argc=4, argv=0xf514d0)
at /var/tmp/portage/kde-base/kdebase-kioslaves-4.3.9999/work/kdebase-kioslaves-4.3.9999/kioslave/thumbnail/thumbnail.cpp:136
#19 0x00000000004074b7 in launch (argc=4, _name=0xf50bf8 "kio_thumbnail", args=0xf50c7c "", cwd=0x0, envc=0, envs=0xf50c84 "",
---Type <return> to continue, or q <return> to quit---
reset_env=false, tty=0x0, avoid_loops=false, startup_id_str=0x40b192 "0")
at /var/tmp/portage/kde-base/kdelibs-4.3.9999/work/kdelibs-4.3.9999/kinit/kinit.cpp:676
#20 0x0000000000407c8f in handle_launcher_request (sock=7, who=0x40b23c "launcher")
at /var/tmp/portage/kde-base/kdelibs-4.3.9999/work/kdelibs-4.3.9999/kinit/kinit.cpp:1168
#21 0x000000000040849e in handle_requests (waitForPid=0)
at /var/tmp/portage/kde-base/kdelibs-4.3.9999/work/kdelibs-4.3.9999/kinit/kinit.cpp:1361
#22 0x0000000000408d2f in main (argc=2, argv=0x7fff0cc47af8, envp=0x7fff0cc47b10)
at /var/tmp/portage/kde-base/kdelibs-4.3.9999/work/kdelibs-4.3.9999/kinit/kinit.cpp:1788
(gdb)
(In reply to comment #5) > We got a core dump: http://www.researchut.com/~rrs/tmp/core.6513 > @Ritesh Raj Sarraf: could you use it to try to get a backtrace from it too ? > (there are somwhich is calling mplayerthumbs. Anyway, i'll do some more tests to see where the problem may be. Also, can you try compiling mplayerthumbs AND kdelibs with debug support, enable everything on kdebugdialog and collect logging again?e hints at http://www.kdedevelopers.org/node/3921) > Thanks Sorry, Unfortunately I can't. I don't have the debug symbols installed (and am also very low on space). It has nothing to do with mplayerthumbs (I don't have it installed) - kdeinit4 simply crashes within kio_thumbnail - just enable previews in dolphin. I know it is unrelated but as he got a coredump (which I manually tried to produce to get some info about the crash, and I failed) I thought it could be useful to have here. Regards What can I do to provide some useful information? I'm just getting those messages in dmesg, but no actual application crash, so I have no backtrace or core dump. I have debugging packages installed. Maciej Mrozowski's actually looks like an intentional bit of diagnostic code, to me, and so may be a red-herring - the code is simply storing the backtrace representing the point at which this KIconLoader was delete'd in the master list: http://api.kde.org/4.x-api/kdelibs-apidocs/kdeui/html/kiconloader_8cpp-source.html#l00557 Unless something is going wrong in the backtrace() call and this is a legitimate crash, that is ;) @Guillermo: I have no experience with this, but you can try the approach here: http://techbase.kde.org/Development/Tutorials/Debugging/Debugging_IOSlaves in particular, running: KDE_SLAVE_DEBUG_WAIT=thumbnail kdeinit4 Now open Dolphin to a directory where previewing causes a crash. As I understand it, each spawned kio_thumbnail instance will start off in a stopped state so that you can connect to it with gdb. In the output from the above command, you should see lines like: kdeinit4: Suspending process kdeinit4: 'gdb kdeinit4 xxxxxxx' to debug Executing the gdb kdeinit4 xxxxxxx command will attach to the kio_thumbnail process so that you can debug it. Press "c" to run the kio_thumbnail process until it crashes (or exits naturally). Note that not all of the kio_thumbnail processes will crash, necessarily. You can also get the PIDs of the kio_thumbnail instances via ps -A | grep thumbnail and run gdb kdeinit4 <PID> on one of the resulting PIDs. My backtrace could be mesleading a bit, let me paste relevant part of backtarce (and not word-wrapped this time):
#9 0x00007f6af1663390 in sigsegv_handler (sig=11) at /var/tmp/portage/kde-base/kdelibs-4.3.9999/work/kdelibs-4.3.9999/kio/kio/slavebase.cpp:745
#10 <signal handler called>
#11 0x00007f6a00000001 in ?? ()
#12 0x00007f6af065b79c in QPainter::end() () from /usr/lib64/qt4/libQtGui.so.4
#13 0x00007f6af065c06a in QPainter::~QPainter() () from /usr/lib64/qt4/libQtGui.so.4
#14 0x00007f6ae7984c43 in ThumbnailProtocol::thumbForDirectory (this=0x7ffffaba1db0, directory=@0x7ffffaba1bf0)
at /var/tmp/portage/kde-base/kdebase-kioslaves-4.3.9999/work/kdebase-kioslaves-4.3.9999/kioslave/thumbnail/thumbnail.cpp:648
#15 0x00007f6ae79857bc in ThumbnailProtocol::get (this=0x7ffffaba1db0, url=@0x7ffffaba1bf0)
at /var/tmp/portage/kde-base/kdebase-kioslaves-4.3.9999/work/kdebase-kioslaves-4.3.9999/kioslave/thumbnail/thumbnail.cpp:247
#16 0x00007f6af1665bfe in KIO::SlaveBase::dispatch (this=0x7ffffaba1db0, command=67, data=@0x7ffffaba1ce0) at /var/tmp/portage/kde-base/kdelibs-4.3.9999/work/kdelibs-4.3.9999/kio/kio/slavebase.cpp:1012
#17 0x00007f6af16669de in KIO::SlaveBase::dispatchLoop (this=0x7ffffaba1db0) at /var/tmp/portage/kde-base/kdelibs-4.3.9999/work/kdelibs-4.3.9999/kio/kio/slavebase.cpp:282
#18 0x00007f6ae7986c47 in kdemain (argc=4, argv=0x1b36c40) at /var/tmp/portage/kde-base/kdebase-kioslaves-4.3.9999/work/kdebase-kioslaves-4.3.9999/kioslave/thumbnail/thumbnail.cpp:136
#19 0x00000000004074b7 in launch (argc=4, _name=0x1b62818 "kio_thumbnail", args=0x1b6289c "", cwd=0x0, envc=0, envs=0x1b628a4 "", reset_env=false, tty=0x0, avoid_loops=false, startup_id_str=0x40b192 "0")
at /var/tmp/portage/kde-base/kdelibs-4.3.9999/work/kdelibs-4.3.9999/kinit/kinit.cpp:676
#20 0x0000000000407c8f in handle_launcher_request (sock=7, who=0x40b23c "launcher") at /var/tmp/portage/kde-base/kdelibs-4.3.9999/work/kdelibs-4.3.9999/kinit/kinit.cpp:1168
#21 0x000000000040849e in handle_requests (waitForPid=0) at /var/tmp/portage/kde-base/kdelibs-4.3.9999/work/kdelibs-4.3.9999/kinit/kinit.cpp:1361
#22 0x0000000000408d2f in main (argc=2, argv=0x7ffffaba2a48, envp=0x7ffffaba2a60) at /var/tmp/portage/kde-base/kdelibs-4.3.9999/work/kdelibs-4.3.9999/kinit/kinit.cpp:1788
looks like it crashes somewhere in QPainter code, and last non-Qt invocation is in kioslave/thumbnail/thumbnail.cpp:648
dammit, bugzilla (or konsole/klipper?) cuts long lines intead of wrapping them, anyway it looks like kioslave/thumbnail/thumbnail.cpp:648 img = thumbForDirectory(url); (thumbnail.cpp:247) (call QImage ThumbnailProtocol::thumbForDirectory(const KUrl& directory)) and crashes while invoking return img; (thumbnail.cpp:648) so.. invoking copy constructor of QImage?? Maybe something wrong with Qt 4.5.1? I get these crashes as well on a newly built kde 4.3 branch installation but they are very difficult to debug. Qt 4.5.2 here.
Some konsole output
kioslave: ####### CRASH ###### protocol = thumbnail pid = 545 signal = 11
/usr/local/branch/lib/libkio.so.5[0xb7883465]
[0xffffe400]
/usr/local/branch-src/qt/lib/libQtGui.so.4(_ZN8QPainterD1Ev+0x3b)[0xb6b7123d]
/usr/local/branch/lib/kde4/kio_thumbnail.so[0xb606307c]
/usr/local/branch/lib/kde4/kio_thumbnail.so[0xb6063e0f]
/usr/local/branch/lib/libkio.so.5(_ZN3KIO9SlaveBase8dispatchEiRK10QByteArray+0x433)[0xb7886311]
/usr/local/branch/lib/libkio.so.5(_ZN3KIO9SlaveBase12dispatchLoopEv+0x233)[0xb7887025]
/usr/local/branch/lib/kde4/kio_thumbnail.so(kdemain+0x256)[0xb60655b5]
kdeinit4: kio_thumbnail [kdeinit] thumbnail local:/tmp/branch-branch/ksocket-branch/klauncherT32764.slave-socket local:/tmp/branch-branch/ksocket-branch/dolphinPtc414.slave-[0x804e455]
kdeinit4: kio_thumbnail [kdeinit] thumbnail local:/tmp/branch-branch/ksocket-branch/klauncherT32764.slave-socket local:/tmp/branch-branch/ksocket-branch/dolphinPtc414.slave-[0x804ebc4]
kdeinit4: kio_thumbnail [kdeinit] thumbnail local:/tmp/branch-branch/ksocket-branch/klauncherT32764.slave-socket local:/tmp/branch-branch/ksocket-branch/dolphinPtc414.slave-[0x804f4ed]
kdeinit4: kio_thumbnail [kdeinit] thumbnail local:/tmp/branch-branch/ksocket-branch/klauncherT32764.slave-socket local:/tmp/branch-branch/ksocket-branch/dolphinPtc414.slave-[0x804febc]
/lib/i686/libc.so.6(__libc_start_main+0xe5)[0xb667d6a5]
kdeinit4: kio_thumbnail [kdeinit] thumbnail local:/tmp/branch-branch/ksocket-branch/klauncherT32764.slave-socket local:/tmp/branch-branch/ksocket-branch/dolphinPtc414.slave-[0x804b151]
kdeinit4: PID 545 terminated.
dolphin(414)/kio (KDirListerCache) KDirListerCache::forgetDirs: DolphinDirLister(0x8bd3b18) item moved into cache: KUrl("file:///home/branch/build/kdegraphics/gwenview")
dolphin(414)/kio (KDirListerCache) KDirListerCache::listDir: Listing directory: KUrl("file:///home/branch/build/kdegraphics/gwenview/app")
dolphin(414)/kio (Slave) KIO::Slave::gotInput: slave died pid = 545
dolphin(414)/kdeui (KIconLoader) KIconLoader::loadIcon: No such icon "application-x-konsole"
dolphin(414)/kio (KDirListerCache) KDirListerCache::slotResult: finished listing KUrl("file:///home/branch/build/kdegraphics/gwenview/app")
dolphin(414)/kio KIO::DelegateAnimationHandler::setSequenceIndex: 1
dolphin(414)/kio KIO::DelegateAnimationHandler::gotNewIcon: 1
dolphin(414)/kio (Slave) KIO::Slave::createSlave: createSlave "thumbnail" for KUrl("thumbnail:/home/branch/build/kdegraphics/gwenview/app/CMakeFiles")
dolphin(414)/kio (KIOConnection) KIO::ConnectionServer::listenForRemote: Listening on "local:/tmp/branch-branch/ksocket-branch/dolphinVJJ414.slave-socket"
klauncher(32764)/kio (KLauncher) KLauncher::requestSlave: KLauncher: launching new slave "kio_thumbnail" with protocol= "thumbnail" args= ("thumbnail", "local:/tmp/branch-branch/ksocket-branch/klauncherT32764.slave-socket", "local:/tmp/branch-branch/ksocket-branch/dolphinVJJ414.slave-socket")
kdeinit4: Got EXEC_NEW 'kio_thumbnail' from launcher.
kdeinit4: preparing to launch /usr/local/branch/lib/kde4/kio_thumbnail.so
klauncher(32764)/kio (KLauncher) KLauncher::processRequestReturn: "kio_thumbnail" (pid 547) up and running.
kio_thumbnail(547) ThumbnailProtocol::get: Wanting MIME Type: "inode/directory"
kio_thumbnail(547)/kdecore (KSycoca) KSycocaPrivate::openDatabase: Trying to open ksycoca from "/var/tmp/kdecache-branch/ksycoca4"
kio_thumbnail(547)/kdecore (KMimeType) KMimeTypeFactory::parseMagic: Now parsing "/usr/share/mime/magic"
kio_thumbnail(547)/kdecore (KMimeType) KMimeTypeFactory::parseMagic: Now parsing "/usr/local/branch/share/mime/magic"
kio_thumbnail(547)/kdecore (KMimeType) KMimeTypeFactory::parseMagic: Now parsing "/home/branch/.local/share/mime/magic"
kio_thumbnail(547)/kdecore (trader) KMimeTypeTrader::query: query for mimeType "text/plain" , "ThumbCreator" : returning 1 offers
kio_thumbnail(547)/kdecore (trader) KMimeTypeTrader::query: query for mimeType "text/x-cmake" , "ThumbCreator" : returning 1 offers
Same here, I opened the bug on launchpad: https://bugs.launchpad.net/ubuntu/+source/kde4libs/+bug/401490 This was fixed recently by: SVN commit 1001953 by ppenz SVN commit 1002368 by ppenz SVN commit 1002369 by ppenz See details at bug 196880. Thanks |