[Konsole-devel] [Bug 128488] New: konsole takes 100% cpu on printing tab-completionlist in bash

[Thomas Zander]

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http://bugs.kde.org/show_bug.cgi?id=128488         
           Summary: konsole takes 100% cpu on printing tab-completionlist in
                    bash
           Product: konsole
           Version: 1.6.3
          Platform: unspecified
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: konsole-devel kde org
        ReportedBy: zander kde org


Version:           1.6.3 (using KDE 3.5.3, compiled sources)
Compiler:          Target: x86_64-linux-gnu
OS:                Linux (x86_64) release 2.6.13.2

I can reproduce this consistently since this morning (I recompiled last night; I'm at r547493).

start a screen
type  'cd k[tab][tab]'
in a dir where there are multiple dirs starting with a k.
This would normally print a tab-completion list, but now it just eats 100% CPU.

Attaching with gdb and doing regular bt-s I see this consistently re-appear:

#4  0x00002aaaaedadac9 in TEmulation::onRcvBlock () from /usr/local/kde/lib/libkdeinit_konsole.so
#5  0x00002aaaaed9c5ea in TESession::onRcvBlock () from /usr/local/kde/lib/libkdeinit_konsole.so
#6  0x00002aaaaed9c7e0 in TESession::qt_invoke () from /usr/local/kde/lib/libkdeinit_konsole.so
#7  0x00002aaaac71e628 in QObject::activate_signal () from /usr/local/kde/qt/lib/libqt-mt.so.3
#8  0x00002aaaaed6f905 in TEPty::block_in () from /usr/local/kde/lib/libkdeinit_konsole.so
#9  0x00002aaaaed703f6 in TEPty::qt_invoke () from /usr/local/kde/lib/libkdeinit_konsole.so
#10 0x00002aaaac71e628 in QObject::activate_signal () from /usr/local/kde/qt/lib/libqt-mt.so.3
#11 0x00002aaaaba7f444 in KProcess::receivedStdout () from /usr/local/kde/lib/libkdecore.so.4
#12 0x00002aaaaba7f61e in KProcess::childOutput () from /usr/local/kde/lib/libkdecore.so.4
#13 0x00002aaaaba7f629 in KProcess::slotChildOutput () from /usr/local/kde/lib/libkdecore.so.4
#14 0x00002aaaaba81a9e in KProcess::qt_invoke () from /usr/local/kde/lib/libkdecore.so.4
#15 0x00002aaaaed7038d in TEPty::qt_invoke () from /usr/local/kde/lib/libkdeinit_konsole.so
#16 0x00002aaaac71e628 in QObject::activate_signal () from /usr/local/kde/qt/lib/libqt-mt.so.3
#17 0x00002aaaac71eb94 in QObject::activate_signal () from /usr/local/kde/qt/lib/libqt-mt.so.3
#18 0x00002aaaac739acb in QSocketNotifier::event () from /usr/local/kde/qt/lib/libqt-mt.so.3
#19 0x00002aaaac6c8973 in QApplication::internalNotify () from /usr/local/kde/qt/lib/libqt-mt.so.3
#20 0x00002aaaac6c9340 in QApplication::notify () from /usr/local/kde/qt/lib/libqt-mt.so.3
#21 0x00002aaaaba3bfee in KApplication::notify () from /usr/local/kde/lib/libkdecore.so.4
#22 0x00002aaaac6bddf0 in QEventLoop::activateSocketNotifiers ()
   from /usr/local/kde/qt/lib/libqt-mt.so.3
#23 0x00002aaaac67e76e in QEventLoop::processEvents () from /usr/local/kde/qt/lib/libqt-mt.so.3
#24 0x00002aaaac6dd468 in QEventLoop::enterLoop () from /usr/local/kde/qt/lib/libqt-mt.so.3
#25 0x00002aaaac6dd382 in QEventLoop::exec () from /usr/local/kde/qt/lib/libqt-mt.so.3
#26 0x00002aaaaed74ad7 in kdemain () from /usr/local/kde/lib/libkdeinit_konsole.so
#27 0x0000000000407249 in launch ()
#28 0x0000000000407a12 in handle_launcher_request ()
#29 0x0000000000408091 in handle_requests ()
#30 0x0000000000409192 in main ()