Created attachment 132473 [details] kde-init5 crash each time when pc start SUMMARY kde-init5 crash each time when pc start STEPS TO REPRODUCE 1. 2. 3. OBSERVED RESULT EXPECTED RESULT SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION
#6 ThumbnailProtocol::get (this=0x7ffc72a9e890, url=...) at /usr/src/debug/kio-extras5-20.08.2-1.1.x86_64/thumbnail/thumbnail.cpp:356 #7 0x00007f81461a0c16 in KIO::SlaveBase::dispatch (this=0x7ffc72a9e890, command=67, data=...) at /usr/src/debug/kio-5.75.0-1.1.x86_64/src/core/slavebase.cpp:1193 #8 0x00007f8146197a86 in KIO::SlaveBase::dispatchLoop (this=0x7ffc72a9e890) at /usr/src/debug/kio-5.75.0-1.1.x86_64/src/core/slavebase.cpp:325
From the BT: __len=331776 Thats e.g. 256 * 324 * 4 (RGBA32). Probably the SHM segment was only allocated for a size of 256x256 (which is the largest cached size), while the actually requested size was actually larger. For neither dolphin nor the filewidget this should be a problem, as both disable caching when requesting sizes larger than 256x256. Are you using any third party folderviews or preview widgets?
Git commit 2df4b465b391999e82c3a7f667a0e9292ad2a6c3 by David Faure, on behalf of Stefan Brüns. Committed on 22/10/2020 at 22:27. Pushed by dfaure into branch 'master'. [PreviewJob] Allocate sufficient memory for SHM segment cacheWidth/Height is clamped to 256x256 when some of the the thumbnails are saved, while the unsaved thumbnails are requested with the original (larger) size. Dolphin and the filewidget disable caching for the large previews, and the iconviews are limited to 256x256, so typically this does not happen, but when the PreviewJob is run without disabling caching using `setScaleType`, the thumbnailer slave will write out-of-bounds. M +2 -1 src/widgets/previewjob.cpp https://invent.kde.org/frameworks/kio/commit/2df4b465b391999e82c3a7f667a0e9292ad2a6c3
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After reinstall, i think the bugs is when i raise the resolution 100x to 300x (hidpi)
Please at least mention which versions of KDE Frameworks you are using.
KDE Frameworks 5.75.0
*** This bug has been marked as a duplicate of bug 430862 ***