https://bugs.kde.org/show_bug.cgi?id=518464
Bug ID: 518464
Summary: Logging race condition
Classification: Applications
Product: krita
Version First 5.1.5
Reported In:
Platform: Other
OS: Microsoft Windows
Status: REPORTED
Severity: crash
Priority: NOR
Component: * Unknown
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
A friend had Krita crash a seemingly randomly while he's drawing, often while
saving files.
His Krita version is a bit older, but the issue I identified hasn't changed
between versions.
I've looked at his logs, and one line had signs of a race condition:
"30 Mar 30 Mar 2026 16:02:32 -0400: Importing application/x-krita to
application/x-krita. Location: "
I have a theory - logFile.write() functions in KisUsageLogger aren't
thread-safe, so I used QMutexLocker to lock the writes.
STEPS TO REPRODUCE
1. Race conditions aren't easily reproduced, and I can't reproduce it on my
machine (my drives might be too fast for this to ever manifest)
OBSERVED RESULT
Random crashes, often during exporting animations.
EXPECTED RESULT
No random crashes
SOFTWARE/OS VERSIONS
Windows: 10
ADDITIONAL INFORMATION
I don't have an account on invent.kde.org, and I'm not sure my code quality is
up to KDE standards, so I'm going to attach my proposed patch here.
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