https://bugs.kde.org/show_bug.cgi?id=500892
Bug ID: 500892
Summary: Kate allocates all system memory until system crash or
OOM-killed in certain situations involving symlinks
Classification: Applications
Product: kate
Version: unspecified
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: critical
Priority: NOR
Component: general
Assignee: kwrite-bugs-n...@kde.org
Reporter: thatk...@gmail.com
Target Milestone: ---
SUMMARY
When using the Open Folder (Ctrl+T) mode, Kate appears to attempt to load large
directories multiple times for each symlink that points to it, potentially
consuming all available system memory until system crash or OOM-killed.
On my setup, I have my old Windows SSD mounted on at /mnt/c/. This is a large
directory, and if I target it with Kate's Open Folder feature, Kate allocates
approximately 2 GB of memory to fully load it (this seems very excessive on its
own!). However, I have programs like Wine, Proton, and Lutris installed, and
each of these can sometimes create multiple WINEPREFIX directories, which each
contain a Z: symlink, which points to my Linux drive, which contains /mnt/c/.
For each of these WINEPREFIX directories, I believe it's trying to load the
entire filesystem, /mnt/c/ and all, over and over again. Given that Proton on
Steam alone currently has 26 of these WINEPREFIX directories, this means that
Kate will attempt to fully load these directories over and over again, crashing
any system that has under 50 or so free gigabytes of free memory (which will be
most of them).
Now that I think about it, the /mnt/c/ situation may not even be necessary. If
a symlink points to the system's root directory, it may try to recursively
reload the entire filesystem again every time it reaches that symlink. However,
given how common Wine is, I feel like this problem would have been encountered
long ago if it were that simple. In any case, I feel like there should be some
kind of brake in Kate that stops it from allocating an unreasonable amount of
memory regardless of the filesystem setup.
STEPS TO REPRODUCE
1. Open a WINEPREFIX directory (specifically, the dosdevices directory) while a
large drive is mounted to the filesystem.
2. Wait until Kate allocates all remaining system memory (or a very large
portion of it), crashing the system or being OOM-killed.
OBSERVED RESULT
The system crashes or Kate is OOM-killed.
EXPECTED RESULT
The directory listing is displayed in the folder panel.
SOFTWARE/OS VERSIONS
Operating System: EndeavourOS
KDE Plasma Version: 6.3.2
KDE Frameworks Version: 6.11.0
Qt Version: 6.8.2
--
You are receiving this mail because:
You are watching all bug changes.
