| Summary: | Strigi crash while indexing | ||
|---|---|---|---|
| Product: | [I don't know] kde | Reporter: | Cyrille Dunant <cyrille.dunant> |
| Component: | general | Assignee: | Unassigned bugs mailing-list <unassigned-bugs> |
| Status: | RESOLVED FIXED | ||
| Severity: | crash | CC: | cyrille.dunant, frank78ac, remur, sven.burmeister |
| Priority: | NOR | ||
| Version: | unspecified | ||
| Target Milestone: | --- | ||
| Platform: | unspecified | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Sentry Crash Report: | |||
| Attachments: |
this file crashes the indexer
New crash information added by DrKonqi file which causes the crah |
||
Thanks for the bug report! It would really help if you could identify which file is responsible for the crash (looks like it's a PS file, possible in an archive, according to the backtrace). You could try to run 'xmlindexer' or 'rdfindexer' and pass a file name as a parameter to verify if a file is responsible for the crash. Created attachment 54396 [details]
this file crashes the indexer
this file crashes the indexer
the attached file crashes [rdf|xml]indexer with
Application: (rdfindexer), signal: Aborted
[KCrash Handler]
#6 0x00007f445af7c4e5 in raise (sig=<value optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#7 0x00007f445af7d9b0 in abort () at abort.c:88
#8 0x00007f445afb76fd in __libc_message (do_abort=2, fmt=
0x7fffd11df850 " /usr/lib64/strigi/strigiea_tiff.so\n7f44479aa000-7f44479ab000 r--p 00003000 08:12 243521", ' ' <repeats 21 times>, "/usr/lib64/strigi/strigiea_tiff.so\n7f44479ab000-7f44479ac000 rw-p 00004000 08:12 24352"...) at ../sysdeps/unix/sysv/linux/libc_fatal.c:170
#9 0x00007f445afbcd06 in malloc_printerr (action=3, str=0x7f445b069797 "free(): invalid pointer", ptr=<value optimized out>) at malloc.c:6239
#10 0x00007f445b349f09 in std::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string() () from /usr/lib64/libstdc++.so.6
#11 0x00007f445af7f065 in __run_exit_handlers (status=0, listp=0x7f445b29f4a8, run_list_atexit=true) at exit.c:78
#12 0x00007f445af7f0b5 in exit (status=21305) at exit.c:100
#13 0x00007f445af68a84 in __libc_start_main (main=<value optimized out>, argc=<value optimized out>, ubp_av=<value optimized out>, init=<value optimized out>, fini=<value optimized out>,
rtld_fini=<value optimized out>, stack_end=0x7fffd11e00e8) at libc-start.c:252
#14 0x0000000000405a59 in _start ()
Thanks for the file! I could not reproduce this with my trunk build of KDE/Strigi, but the last backtrace looks like it's related to bug 257944, which got reported quite frequently recently. Maybe your test file can help to nail down this issue. does the indexer only crash on that file or do you experience https://bugzilla.novell.com/show_bug.cgi?id=633747 Created attachment 54830 [details]
New crash information added by DrKonqi
xmlindexer () on KDE Platform 4.5.86 (4.6 >= 20101210) "release 9" using Qt 4.7.2
I have found another file which causes the crah of xmlindexer
-- Backtrace (Reduced):
#6 strchr () at ../sysdeps/x86_64/strchr.S:48
#7 0x00007f86230c03fa in strstr (haystack_start=
0x7f860e086010 "StartFontMetrics 2.0\nComment Generated by MetaType1 (a MetaPost-based engine)\nComment Creation Date: 29th February 2008\nNotice Copyright \\050URW\\051++, copyright 1999 by \\050URW\\051++ Design & Develop"..., needle_start=0x7f8621bfcb0f "<contactGroup") at strstr.c:73
#8 0x00007f8621bfc1da in CtgEndAnalyzer::checkHeader(char const*, int) const () from /usr/lib64/strigi/strigiea_ctg.so
#9 0x00007f8623b455bd in Strigi::StreamAnalyzerPrivate::analyze (this=0x692c60, idx=..., input=0x7b4fe0) at /usr/src/debug/strigi-0.7.3/libstreamanalyzer/lib/streamanalyzer.cpp:422
#10 0x00007f8623b24be4 in Strigi::DirAnalyzer::Private::analyzeFile (this=<value optimized out>, path=..., mtime=1204279440, realfile=true)
at /usr/src/debug/strigi-0.7.3/libstreamanalyzer/lib/diranalyzer.cpp:97
Created attachment 54831 [details]
file which causes the crah
Could you please try with latest trunk? On 0.7.3.99 it works just fine. This is valgrind's output, before it stalls. And it is (according to the package number from opensuse 0.7.3.99). ==17232== Memcheck, a memory error detector ==17232== Copyright (C) 2002-2009, and GNU GPL'd, by Julian Seward et al. ==17232== Using Valgrind-3.5.0 and LibVEX; rerun with -h for copyright info ==17232== Command: xmlindexer 1D4D.pdf ==17232== <?xml version='1.0' encoding='UTF-8'?> <metadata> ==17232== Invalid read of size 1 ==17232== at 0x4C2774B: memchr (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==17232== by 0x58975A5: strstr (str-two-way.h:269) ==17232== by 0xCB680B9: CtgEndAnalyzer::checkHeader(char const*, int) const (in /usr/lib64/strigi/strigiea_ctg.so) ==17232== by 0x4E7272C: Strigi::StreamAnalyzerPrivate::analyze(Strigi::AnalysisResult&, Strigi::StreamBase<char>*) (streamanalyzer.cpp:418) ==17232== by 0x4E4B0C0: Strigi::DirAnalyzer::Private::analyzeFile(std::string const&, long, bool) (diranalyzer.cpp:107) ==17232== by 0x4E4C615: Strigi::DirAnalyzer::Private::analyzeDir(std::string const&, int, Strigi::AnalysisCaller*, std::string const&) (diranalyzer.cpp:254) ==17232== by 0x40611F: main (xmlindexer.cpp:160) ==17232== Address 0x204305b0 is 0 bytes after a block of size 1,024 alloc'd ==17232== at 0x4C26D32: realloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==17232== by 0x50E54D3: Strigi::SkippingFileInputStream::read(char const*&, int, int) (skippingfileinputstream.cpp:95) ==17232== by 0x50D5E19: Strigi::DataEventInputStream::read(char const*&, int, int) (dataeventinputstream.cpp:39) ==17232== by 0x4E7268B: Strigi::StreamAnalyzerPrivate::analyze(Strigi::AnalysisResult&, Strigi::StreamBase<char>*) (streamanalyzer.cpp:402) ==17232== by 0x4E4B0C0: Strigi::DirAnalyzer::Private::analyzeFile(std::string const&, long, bool) (diranalyzer.cpp:107) ==17232== by 0x4E4C615: Strigi::DirAnalyzer::Private::analyzeDir(std::string const&, int, Strigi::AnalysisCaller*, std::string const&) (diranalyzer.cpp:254) ==17232== by 0x40611F: main (xmlindexer.cpp:160) ==17232== ==17232== Invalid read of size 4 ==17232== at 0xFB32F22: ff_ac3_parse_header (bswap.h:42) ==17232== by 0x10960796: ??? (in /usr/lib64/libavformat.so.52.93.0) ==17232== by 0xF8A5283: FFMPEGEndAnalyzer::checkHeader(char const*, int) const (in /usr/lib64/strigi/strigiea_ffmpeg.so) ==17232== by 0x4E7272C: Strigi::StreamAnalyzerPrivate::analyze(Strigi::AnalysisResult&, Strigi::StreamBase<char>*) (streamanalyzer.cpp:418) ==17232== by 0x4E4B0C0: Strigi::DirAnalyzer::Private::analyzeFile(std::string const&, long, bool) (diranalyzer.cpp:107) ==17232== by 0x4E4C615: Strigi::DirAnalyzer::Private::analyzeDir(std::string const&, int, Strigi::AnalysisCaller*, std::string const&) (diranalyzer.cpp:254) ==17232== by 0x40611F: main (xmlindexer.cpp:160) ==17232== Address 0x204305ad is 1,021 bytes inside a block of size 1,024 alloc'd ==17232== at 0x4C26D32: realloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==17232== by 0x50E54D3: Strigi::SkippingFileInputStream::read(char const*&, int, int) (skippingfileinputstream.cpp:95) ==17232== by 0x50D5E19: Strigi::DataEventInputStream::read(char const*&, int, int) (dataeventinputstream.cpp:39) ==17232== by 0x4E7268B: Strigi::StreamAnalyzerPrivate::analyze(Strigi::AnalysisResult&, Strigi::StreamBase<char>*) (streamanalyzer.cpp:402) ==17232== by 0x4E4B0C0: Strigi::DirAnalyzer::Private::analyzeFile(std::string const&, long, bool) (diranalyzer.cpp:107) ==17232== by 0x4E4C615: Strigi::DirAnalyzer::Private::analyzeDir(std::string const&, int, Strigi::AnalysisCaller*, std::string const&) (diranalyzer.cpp:254) ==17232== by 0x40611F: main (xmlindexer.cpp:160) ==17232== ==17232== Invalid read of size 4 ==17232== at 0x109839C2: ??? (in /usr/lib64/libavformat.so.52.93.0) ==17232== by 0xF8A5283: FFMPEGEndAnalyzer::checkHeader(char const*, int) const (in /usr/lib64/strigi/strigiea_ffmpeg.so) ==17232== by 0x4E7272C: Strigi::StreamAnalyzerPrivate::analyze(Strigi::AnalysisResult&, Strigi::StreamBase<char>*) (streamanalyzer.cpp:418) ==17232== by 0x4E4B0C0: Strigi::DirAnalyzer::Private::analyzeFile(std::string const&, long, bool) (diranalyzer.cpp:107) ==17232== by 0x4E4C615: Strigi::DirAnalyzer::Private::analyzeDir(std::string const&, int, Strigi::AnalysisCaller*, std::string const&) (diranalyzer.cpp:254) ==17232== by 0x40611F: main (xmlindexer.cpp:160) ==17232== Address 0x204305ad is 1,021 bytes inside a block of size 1,024 alloc'd ==17232== at 0x4C26D32: realloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==17232== by 0x50E54D3: Strigi::SkippingFileInputStream::read(char const*&, int, int) (skippingfileinputstream.cpp:95) ==17232== by 0x50D5E19: Strigi::DataEventInputStream::read(char const*&, int, int) (dataeventinputstream.cpp:39) ==17232== by 0x4E7268B: Strigi::StreamAnalyzerPrivate::analyze(Strigi::AnalysisResult&, Strigi::StreamBase<char>*) (streamanalyzer.cpp:402) ==17232== by 0x4E4B0C0: Strigi::DirAnalyzer::Private::analyzeFile(std::string const&, long, bool) (diranalyzer.cpp:107) ==17232== by 0x4E4C615: Strigi::DirAnalyzer::Private::analyzeDir(std::string const&, int, Strigi::AnalysisCaller*, std::string const&) (diranalyzer.cpp:254) ==17232== by 0x40611F: main (xmlindexer.cpp:160) ==17232== ==17232== Invalid read of size 1 ==17232== at 0x4C283D4: rawmemchr (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==17232== by 0x588C64F: _IO_str_init_static_internal (strops.c:45) ==17232== by 0x587BE94: __isoc99_vsscanf (isoc99_vsscanf.c:42) ==17232== by 0x587BE27: __isoc99_sscanf (isoc99_sscanf.c:33) ==17232== by 0x109E61D7: ??? (in /usr/lib64/libavformat.so.52.93.0) ==17232== by 0xF8A5283: FFMPEGEndAnalyzer::checkHeader(char const*, int) const (in /usr/lib64/strigi/strigiea_ffmpeg.so) ==17232== by 0x4E7272C: Strigi::StreamAnalyzerPrivate::analyze(Strigi::AnalysisResult&, Strigi::StreamBase<char>*) (streamanalyzer.cpp:418) ==17232== by 0x4E4B0C0: Strigi::DirAnalyzer::Private::analyzeFile(std::string const&, long, bool) (diranalyzer.cpp:107) ==17232== by 0x4E4C615: Strigi::DirAnalyzer::Private::analyzeDir(std::string const&, int, Strigi::AnalysisCaller*, std::string const&) (diranalyzer.cpp:254) ==17232== by 0x40611F: main (xmlindexer.cpp:160) ==17232== Address 0x204305b0 is 0 bytes after a block of size 1,024 alloc'd ==17232== at 0x4C26D32: realloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==17232== by 0x50E54D3: Strigi::SkippingFileInputStream::read(char const*&, int, int) (skippingfileinputstream.cpp:95) ==17232== by 0x50D5E19: Strigi::DataEventInputStream::read(char const*&, int, int) (dataeventinputstream.cpp:39) ==17232== by 0x4E7268B: Strigi::StreamAnalyzerPrivate::analyze(Strigi::AnalysisResult&, Strigi::StreamBase<char>*) (streamanalyzer.cpp:402) ==17232== by 0x4E4B0C0: Strigi::DirAnalyzer::Private::analyzeFile(std::string const&, long, bool) (diranalyzer.cpp:107) ==17232== by 0x4E4C615: Strigi::DirAnalyzer::Private::analyzeDir(std::string const&, int, Strigi::AnalysisCaller*, std::string const&) (diranalyzer.cpp:254) ==17232== by 0x40611F: main (xmlindexer.cpp:160) ==17232== Detection score:0 2011/2/4 Karsten König <remur@gmx.net> > https://bugs.kde.org/show_bug.cgi?id=258031 > > > Karsten König <remur@gmx.net> changed: > > What |Removed |Added > > ---------------------------------------------------------------------------- > CC| |remur@gmx.net > > > > > --- Comment #8 from Karsten König <remur gmx net> 2011-02-04 20:25:09 --- > Could you please try with latest trunk? On 0.7.3.99 it works just fine. > > -- > Configure bugmail: https://bugs.kde.org/userprefs.cgi?tab=email > ------- You are receiving this mail because: ------- > You are a voter for the bug. > You are on the CC list for the bug. > You reported the bug. > Are you sure that is on either mesher_tradeoff.dvi or qagb.afm ? I am running oS 11.3 + KDE Distro Factory repository and valgrind finishs fine on both with an update from this day No, this is a different bug. I created an attachment this morning (1D4D.pdf) mesher_tradeoff.dvi works fine indeed. I can confirm. This attachement is not on this bugreport, maybe you added it to another and confused both bugs? https://bugs.kde.org/show_bug.cgi?id=265309 is the bug I was talking about. Sorry about the confusion. So yes, for me, 258031 <https://bugs.kde.org/show_bug.cgi?id=258031> can be closed. 2011/2/4 Karsten König <remur@gmx.net> > https://bugs.kde.org/show_bug.cgi?id=258031 > > > > > > --- Comment #12 from Karsten König <remur gmx net> 2011-02-04 21:14:23 --- > This attachement is not on this bugreport, maybe you added it to another > and > confused both bugs? > > -- > Configure bugmail: https://bugs.kde.org/userprefs.cgi?tab=email > ------- You are receiving this mail because: ------- > You are a voter for the bug. > You are on the CC list for the bug. > You reported the bug. > |
Application: strigidaemon () KDE Platform Version: 4.5.80 (4.6 Beta1) Qt Version: 4.7.1 Operating System: Linux 2.6.31.14-0.4-desktop x86_64 Distribution: "openSUSE 11.2 (x86_64)" -- Information about the crash: Strigi crashes at regular intervals while indexing. I managed to get this backtrace. The crash can be reproduced every time. -- Backtrace: Application: (strigidaemon), signal: Segmentation fault [Current thread is 1 (Thread 0x7f3f18aa2710 (LWP 7709))] Thread 6 (Thread 0x7f3f163da910 (LWP 7712)): #0 0x00007f3f174a05b1 in nanosleep () from /lib64/libc.so.6 #1 0x00007f3f174a03f9 in __sleep (seconds=<value optimized out>) at ../sysdeps/unix/sysv/linux/sleep.c:138 #2 0x00000000004319d0 in EventListenerQueue::run (this=0x6ae8f0) at /usr/src/debug/strigi-0.7.3/strigidaemon/bin/daemon/eventlistener/eventlistenerqueue.cpp:79 #3 0x0000000000429163 in threadstarter (d=0x6ae8f0) at /usr/src/debug/strigi-0.7.3/strigidaemon/bin/daemon/strigithread.cpp:143 #4 0x00007f3f17a6f65d in start_thread (arg=<value optimized out>) at pthread_create.c:297 #5 0x00007f3f174d0ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #6 0x0000000000000000 in ?? () Thread 5 (Thread 0x7f3f15bd9910 (LWP 7713)): #0 0x00007f3f17a77341 in nanosleep () from /lib64/libpthread.so.0 #1 0x000000000041f8eb in shortsleep (nanoseconds=<value optimized out>) at /usr/src/debug/strigi-0.7.3/strigidaemon/bin/daemon/indexscheduler.cpp:63 #2 0x0000000000420da7 in IndexScheduler::run (this=0x7ffffa4fb170) at /usr/src/debug/strigi-0.7.3/strigidaemon/bin/daemon/indexscheduler.cpp:70 #3 0x0000000000429163 in threadstarter (d=0x7ffffa4fb170) at /usr/src/debug/strigi-0.7.3/strigidaemon/bin/daemon/strigithread.cpp:143 #4 0x00007f3f17a6f65d in start_thread (arg=<value optimized out>) at pthread_create.c:297 #5 0x00007f3f174d0ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #6 0x0000000000000000 in ?? () The current source language is "auto; currently c". Thread 4 (Thread 0x7f3f153d8910 (LWP 7714)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261 #1 0x00000000004258d6 in JobQueue::Private::getNextJob (this=0x6cd2c0) at /usr/src/debug/strigi-0.7.3/strigidaemon/bin/daemon/queue/jobqueue.cpp:204 #2 0x0000000000425b72 in JobThread::workloop (this=0x6a6030) at /usr/src/debug/strigi-0.7.3/strigidaemon/bin/daemon/queue/jobqueue.cpp:82 #3 0x0000000000425c49 in JobThread::start (vt=0x6cd2e4) at /usr/src/debug/strigi-0.7.3/strigidaemon/bin/daemon/queue/jobqueue.cpp:41 #4 0x00007f3f17a6f65d in start_thread (arg=<value optimized out>) at pthread_create.c:297 #5 0x00007f3f174d0ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #6 0x0000000000000000 in ?? () Thread 3 (Thread 0x7f3f14bd7910 (LWP 7715)): [KCrash Handler] #6 strchr () at ../sysdeps/x86_64/strchr.S:48 #7 0x00007f3f1747d13a in strstr (haystack_start= 0x7f3efb4c9010 "%!PS-Adobe-2.0\n%%Creator: dvips(k) 5.95a Copyright 2005 Radical Eye Software\n%%Title: mesher_tradeoff.dvi\n%%Pages: 25\n%%PageOrder: Ascend\n%%BoundingBox: 0 0 595 842\n%%DocumentFonts: Times-Bold Times-R"..., needle_start=0x7f3f0d918b0f "<contactGroup") at strstr.c:68 #8 0x00007f3f0d9181da in CtgEndAnalyzer::checkHeader(char const*, int) const () from /usr/lib64/strigi/strigiea_ctg.so #9 0x00007f3f186755bd in Strigi::StreamAnalyzerPrivate::analyze (this=0x88cda0, idx=..., input=0xe43810) at /usr/src/debug/strigi-0.7.3/libstreamanalyzer/lib/streamanalyzer.cpp:422 #10 0x00007f3f1864e558 in Strigi::AnalysisResult::indexChild (this=0x7f3f14bd6ea0, name=<value optimized out>, mt=1171358393, file=0xe80460) at /usr/src/debug/strigi-0.7.3/libstreamanalyzer/lib/analysisresult.cpp:250 #11 0x00007f3f18696838 in TarEndAnalyzer::staticAnalyze (idx=..., in=0xe13b40) at /usr/src/debug/strigi-0.7.3/libstreamanalyzer/lib/endanalyzers/tarendanalyzer.cpp:63 #12 0x00007f3f186968c9 in TarEndAnalyzer::analyze (this=0xe0a9a0, idx=..., in=0x0) at /usr/src/debug/strigi-0.7.3/libstreamanalyzer/lib/endanalyzers/tarendanalyzer.cpp:40 #13 0x00007f3f1867587a in Strigi::StreamAnalyzerPrivate::analyze (this=0x88cda0, idx=..., input=0xe13b40) at /usr/src/debug/strigi-0.7.3/libstreamanalyzer/lib/streamanalyzer.cpp:424 #14 0x00007f3f18655aa9 in Strigi::DirAnalyzer::Private::update (this=0x88da50, analyzer=<value optimized out>) at /usr/src/debug/strigi-0.7.3/libstreamanalyzer/lib/diranalyzer.cpp:198 #15 0x00007f3f18656441 in Strigi::DirAnalyzer::Private::updateDirs (this=0x88da50, dirs=<value optimized out>, nthreads=1, c=<value optimized out>) at /usr/src/debug/strigi-0.7.3/libstreamanalyzer/lib/diranalyzer.cpp:311 #16 0x00000000004342d5 in PollingListener::poll (this=0x6ad050) at /usr/src/debug/strigi-0.7.3/strigidaemon/bin/daemon/eventlistener/pollinglistener.cpp:118 #17 0x0000000000434432 in PollingListener::run (this=0x6ad050) at /usr/src/debug/strigi-0.7.3/strigidaemon/bin/daemon/eventlistener/pollinglistener.cpp:96 #18 0x0000000000429163 in threadstarter (d=0x6ad050) at /usr/src/debug/strigi-0.7.3/strigidaemon/bin/daemon/strigithread.cpp:143 #19 0x00007f3f17a6f65d in start_thread (arg=<value optimized out>) at pthread_create.c:297 #20 0x00007f3f174d0ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #21 0x0000000000000000 in ?? () The current source language is "auto; currently asm". Thread 2 (Thread 0x7f3f143d6910 (LWP 7716)): #0 0x00007f3f174ca472 in select () from /lib64/libc.so.6 #1 0x0000000000469f2e in DBusHandler::handle (this=0x6cd350) at /usr/src/debug/strigi-0.7.3/strigidaemon/bin/daemon/dbus/dbuscpp/dbushandler.cpp:120 #2 0x0000000000459e6d in DBusServer::run (this=0x7ffffa4fb2a0) at /usr/src/debug/strigi-0.7.3/strigidaemon/bin/daemon/dbus/dbusserver.cpp:54 #3 0x0000000000429163 in threadstarter (d=0x7ffffa4fb2a0) at /usr/src/debug/strigi-0.7.3/strigidaemon/bin/daemon/strigithread.cpp:143 #4 0x00007f3f17a6f65d in start_thread (arg=<value optimized out>) at pthread_create.c:297 #5 0x00007f3f174d0ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #6 0x0000000000000000 in ?? () The current source language is "auto; currently c". Thread 1 (Thread 0x7f3f18aa2710 (LWP 7709)): #0 0x00007f3f17a76cdb in accept () from /lib64/libpthread.so.0 #1 0x0000000000428467 in SocketServer::run (this=0x7ffffa4fb210) at /usr/src/debug/strigi-0.7.3/strigidaemon/bin/daemon/socketserver.cpp:80 #2 0x000000000041dcc2 in listen (this=<value optimized out>) at /usr/src/debug/strigi-0.7.3/strigidaemon/bin/daemon/socketserver.h:46 #3 main (this=<value optimized out>) at /usr/src/debug/strigi-0.7.3/strigidaemon/bin/daemon/daemon.cpp:334 Reported using DrKonqi