Bug 428639

Summary:	Crash while closing a kconsole window, possibly caused by searching in extremely long scrollback history
Product:	[Applications] konsole	Reporter:	rainer+kdebugs
Component:	general	Assignee:	Konsole Bugs <konsole-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	crash	CC:	christoph, justin.zobel
Priority:	NOR	Keywords:	drkonqi
Version First Reported In:	21.12.3
Target Milestone:	---
Platform:	Ubuntu
OS:	Linux
See Also:	https://bugs.kde.org/show_bug.cgi?id=496530
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	New crash information added by DrKonqi drkonqi crash info for konsole (21.12.3)

Description rainer+kdebugs 2020-11-03 12:08:17 UTC

Application: konsole (20.08.2)

Qt Version: 5.14.2
Frameworks Version: 5.74.0
Operating System: Linux 5.8.0-25-generic x86_64
Windowing system: X11
Distribution: Ubuntu 20.10

-- Information about the crash:
- What I was doing when the application crashed:

To attempt to reproduce https://bugs.kde.org/show_bug.cgi?id=360146:

* ran this for a minute or two:

  while true; do echo -n  $RANDOM ============================================================================================================== $RANDOM xx ; done

* searched for a random number backwards and forward using the up/down arrows in the search popup repeatedly/randomly
* did the same holding down F3 / Shift-F3
* Canceled the while loop using Ctrl+C
* Reset+Clear saved lines (Ctrl+Shift+K) and tried again once.

Result: the terminal becomes unusable in that it repeatedly and automatically scrolls to random positions in the scrollback buffer, although one can type at the prompt all the way at the bottom. Konsole crashed when closing the window with this session.

The crash can be reproduced sometimes.

-- Backtrace (Reduced):
#5  0x00007f155ccdb94a in Konsole::SearchHistoryTask::executeOnScreenWindow (this=0x560ebdb04d10, session=..., window=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:663
#6  0x00007f155ccdbdc2 in Konsole::SearchHistoryTask::execute (this=0x560ebdb04d10) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qmap.h:1281
#7  0x00007f155cced108 in Konsole::SessionController::beginSearch (this=this@entry=0x560ebd995aa0, text=..., direction=direction@entry=Konsole::Enum::ForwardsSearch) at ./src/SessionController.cpp:1455
#8  0x00007f155cced45d in Konsole::SessionController::findPreviousInHistory (this=0x560ebd995aa0) at /usr/include/c++/10/bits/atomic_base.h:420
#9  0x00007f155b696320 in doActivate<false> (sender=0x560ebd32b2a0, signal_index=4, argv=argv@entry=0x7ffcc3e0b5a0) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:395


Possible duplicates by query: bug 423054, bug 418543, bug 360146, bug 356272, bug 333971.

Reported using DrKonqi

Comment 1 rainer+kdebugs 2020-11-03 12:08:17 UTC

Created attachment 132988 [details]
New crash information added by DrKonqi

DrKonqi auto-attaching complete backtrace.

Comment 2 Justin Zobel 2022-10-30 00:40:36 UTC

Thank you for reporting this crash in KDE software. As it has been a while since this issue was reported, can we please ask you to see if you can reproduce the crash with a recent software version?

If you can reproduce the issue, please change the status to "REPORTED" when replying. Thank you!

Comment 3 rainer+kdebugs 2022-11-03 10:51:32 UTC

Created attachment 153433 [details]
drkonqi crash info for konsole (21.12.3)

Comment 4 rainer+kdebugs 2022-11-03 10:52:00 UTC

I can reproduce this with Konsole Version 21.12.3, but I can't upload the crash report using the Crash Reporting Assistant (Error sending the crash report / Didn't receive a token / ...)

Application: konsole (21.12.3)

Qt Version: 5.15.3
Frameworks Version: 5.92.0
Operating System: Linux 5.15.0-52-generic x86_64
Windowing System: X11
Distribution: Ubuntu 22.04.1 LTS
DrKonqi: 5.24.5 [KCrashBackend]

Comment 5 Justin Zobel 2022-12-01 05:30:20 UTC

Updating version field.

Comment 6 Christoph Cullmann 2024-09-21 15:35:10 UTC

Please re-try this with a current release.

Comment 7 Bug Janitor Service 2024-10-06 03:47:44 UTC

🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME.

For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging.

Thank you for helping us make KDE software even better for everyone!

Comment 8 Bug Janitor Service 2024-10-21 03:47:33 UTC

🐛🧹 This bug has been in NEEDSINFO status with no change for at least 30 days. Closing as RESOLVED WORKSFORME.