Bug 420226

Summary:	Random crashes on Mac while deselecting a selection
Product:	[Applications] krita	Reporter:	Yu-Hsuan Lai <raincolee>
Component:	Tools/Selection	Assignee:	Krita Bugs <krita-bugs-null>
Status:	RESOLVED FIXED
Severity:	normal	CC:	ghevan, halla
Priority:	NOR
Version First Reported In:	4.2.9
Target Milestone:	---
Platform:	macOS (DMG)
OS:	macOS
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	system.log is the crash log shown by the OS. Krita Usage Log, if it matters

Description Yu-Hsuan Lai 2020-04-18 04:12:02 UTC

Created attachment 127625 [details]
system.log is the crash log shown by the OS.

SUMMARY
This crash looks very different from https://bugs.kde.org/show_bug.cgi?id=420032 so I'm filing a separate report. It happened when I have a selection on the canvas and pressed Cmd+D to deselect it. Krita semi-froze for several seconds. During the period I can select a different layer or switch tools, but the canvas was completely frozen. Then Krita crashed.

The stack trace looks different from Bug 420032 too.

STEPS TO REPRODUCE
Unable to consistently reproduce.

OBSERVED RESULT
Crash

EXPECTED RESULT
Not crash, and selection should be deselected.

SOFTWARE/OS VERSIONS
macOS: 10.14.6
Krita: 4.9.2

ADDITIONAL INFORMATION
See attachment

Comment 1 Yu-Hsuan Lai 2020-04-18 04:14:00 UTC

Created attachment 127626 [details]
Krita Usage Log, if it matters

Comment 2 vanyossi 2020-04-22 16:31:32 UTC

I cannot reproduce this issue, i suppose because its random its not that easy to reproduce. Looking at the log provided I can only tell the crash ocurred somewhere at KisSelection::pixelSelection()

Are you generate lldb backtraces?

Comment 3 Yu-Hsuan Lai 2020-04-22 17:15:41 UTC

(In reply to vanyossi from comment #2)
> I cannot reproduce this issue, i suppose because its random its not that
> easy to reproduce. Looking at the log provided I can only tell the crash
> ocurred somewhere at KisSelection::pixelSelection()
> 
> Are you generate lldb backtraces?

Frankly I don't know how to do that. I tried something like this:

> ❯ lldb /Applications/krita.app/Contents/MacOS/krita
> (lldb) target create "/Applications/krita.app/Contents/MacOS/krita"
> runCurrent executable set to '/Applications/krita.app/Contents/MacOS/krita'  (x86_64).
> (lldb) run
> error: process exited with status -1 (Error 1)

But as you can see it doesn't work.

Comment 4 Bug Janitor Service 2020-04-23 04:33:11 UTC

Thanks for your comment!

Automatically switching the status of this bug to REPORTED so that the KDE team
knows that the bug is ready to get confirmed.

In the future you may also do this yourself when providing needed information.

Comment 5 vanyossi 2020-04-27 18:13:43 UTC

Hi Yu-Hsuan Lai, could you try the lldb steps again with the following dmg? https://drive.google.com/open?id=1xn6eDKG-jPoYqDCdV2mBP2pAVkQcM9dk this one should allow for debugging.

Comment 6 Bug Janitor Service 2020-05-12 04:33:14 UTC

Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
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If you have already provided the requested information, please
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Comment 7 Yu-Hsuan Lai 2020-05-12 11:19:37 UTC

I've been using 4.3.0-beta1 for a while (30+ hrs) and this hasn't happened. We could probably close this for now.

Comment 8 Halla Rempt 2020-05-14 09:00:35 UTC

Thanks for checking!