https://bugs.kde.org/show_bug.cgi?id=406868
Bug ID: 406868
Summary: baloo_file_extractor fails MTimeDB::del with
MDB_BAD_TXN, constant high CPU use
Product: frameworks-baloo
Version: 5.57.0
Platform: Archlinux Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Baloo File Daemon
Assignee: baloo-bugs-n...@kde.org
Reporter: a...@heyquark.com
Target Milestone: ---
Created attachment 119620
--> https://bugs.kde.org/attachment.cgi?id=119620&action=edit
screenshot from htop showing the large CPU and vmem use, as well as which
processes are responsible
SUMMARY
The baloo_file_extractor and tags.so [kdeinit5] processes on my machine seem to
be always running and using large (though not 100%) amounts of CPU, and a full
256G of vmem (htop screencap attached). The journald logs are filled with the
following:
Apr 25 12:38:54 sylveon kdeinit5[1097]: (QUrl("tags:/"), QUrl("tags:/"))
Apr 25 12:38:54 sylveon kdeinit5[1097]: (QUrl("tags:/"), QUrl("tags:/"))
Apr 25 12:38:54 sylveon kdeinit5[1097]: ()
which repeats many, many times. It always follows the same pattern: 2 QUrls and
then an empty. The following messages are mixed in, then repeated many times
after the kdeinit5 messages stop:
Apr 25 12:38:55 sylveon baloo_file_extractor[1458]: org.kde.baloo.engine:
MTimeDB::del 0 3391499450514944 MDB_BAD_TXN: Transaction must abort, has a
child, or is invalid
Apr 25 12:38:55 sylveon baloo_file_extractor[1458]: org.kde.baloo.engine:
Transaction::commit MDB_BAD_TXN: Transaction must abort, has a child, or is
invalid
The transaction ID (I assume that's what the number starting in 33 is?) seems
to remain constant. After a few hundred of each message, they'll stop for
roughly 30 seconds, and then another batch come through.
STEPS TO REPRODUCE
I honestly don't know. I ran a full system update after the recent batch of KDE
Applications updates and now this happens every time I boot my machine - it was
working fine before. I'm happy to dump config files and databases and whatever
else is needed.
OBSERVED RESULT
baloo_file_extractor constantly uses large amounts of vmem and cpu, filling the
system logs with error messages
EXPECTED RESULT
baloo_file_extractor doesn't do that.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Antegros, kernel 5.0.9-arch1-1-ARCH
KDE Plasma Version: 5.15.4
KDE Frameworks Version: 5.57.0
Qt Version: 5.12.3
ADDITIONAL INFORMATION
This is my first time filing a bug with a large project like KDE, hopefully
this is okay! As I said before, more than happy to provide other information; I
really had no idea where to start with this.
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