https://bugs.kde.org/show_bug.cgi?id=400585
Bug ID: 400585
Summary: plasmashell process consumes all shared memory (SHM)
segments, causing problems for other process that need
to be able to allocate SHM
Product: plasmashell
Version: 5.14.2
Platform: Kubuntu Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: 1.0
Created attachment 116046
--> https://bugs.kde.org/attachment.cgi?id=116046&action=edit
Output of lsipc -m. Notice all the plasmashell entries.
SUMMARY
Shortly after system boot all available shared memory segments are consumed by
the plasmashell process, causing other applications that makes use of it (for
rendering, for instance) to fail [in my case specifically the `keepassx`
application].
STEPS TO REPRODUCE
1. Boot
2. Check shared memory using the `lsipc` command.
3. Repeat 2 and watch the shared memory segments usage climb to 100%
OBSERVED RESULT
>From `lsipc`:
SHMMNI Shared memory segments 4096 4096
100.00%
SHMALL Shared memory pages 18446744073692774399 575743
0.00%
SHMMAX Max size of shared memory segment (bytes) 18446744073692774399 -
-
>From `lsipc -m`:
0x00000000 196055039 rwxrwxrwx cobusc 480K 1 dest Nov01 6380 19719
/usr/bin/plasmashell
(this is repeated 4072 times) notice that the segments are flagged as "to be
destroyed", but it cannot, since the process is still attached.
EXPECTED RESULT
SOFTWARE VERSIONS
(available in About System)
KDE Plasma Version: 4:5.14.2-0ubuntu1~ubuntu18.10~ppa1
KDE Frameworks Version: 5.51.0
Qt Version: 5.11.1
ADDITIONAL INFORMATION
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