[dolphin] [Bug 478849] New: Dolphin in administrator mode sometimes hangs/freezes until OOM kills it

[Jacob White]

https://bugs.kde.org/show_bug.cgi?id=478849

            Bug ID: 478849
           Summary: Dolphin in administrator mode sometimes hangs/freezes
                    until OOM kills it
    Classification: Applications
           Product: dolphin
           Version: 23.08.4
          Platform: Fedora RPMs
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: dolphin-bugs-null at kde.org
          Reporter: jacobwgames at gmail.com
                CC: kfm-devel at kde.org
  Target Milestone: ---

SUMMARY
Sometimes, when browsing a directory with dolphin after using the "Open as
Administrator" option to view root-owned folders, the dolphin window will
freeze and become unresponsive. After a short while, the window is killed. This
happened while I was browsing the /boot directory. I saw this in journalctl
both times it happened:
>Dec 21 11:15:48 <hostname> kernel: oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,global_oom,task_memcg=/user.slice/user-1000.slice/user at 1000.service/app.slice/app-dolphin-d404b4650d8948828d743209543602cd.scope,task=dolphin,pid=7430,uid=1000
>Dec 21 11:15:48 <hostname> kernel: Out of memory: Killed process 7430 (dolphin) total-vm:22055596kB, anon-rss:13076652kB, file-rss:67080kB, shmem-rss:2016kB, UID:1000 pgtables:37908kB oom_score_adj:200
>Dec 21 11:15:48 <hostname> systemd[1758]: app-dolphin-d404b4650d8948828d743209543602cd.scope: A process of this unit has been killed by the OOM killer.
>Dec 21 11:15:49 <hostname> systemd[1758]: app-dolphin-d404b4650d8948828d743209543602cd.scope: Failed with result 'oom-kill'.
>Dec 21 11:15:49 <hostname> systemd[1758]: app-dolphin-d404b4650d8948828d743209543602cd.scope: Consumed 24.493s CPU time.

I had this happen twice very quickly, and then when I went to repro it a third
time to gather more information I couldn't get it to happen, so it's not 100%
consistent.

STEPS TO REPRODUCE
1. Navigate to /boot in dolphin
2. Right-click and select "Open as Administrator"
3. Enter password
4. Browse the directory and subdirectories. Click on files. Interact with the
window.

OBSERVED RESULT
Sometimes, the window will freeze and no longer respond to input. Eventually,
it will be killed.

EXPECTED RESULT
Expected that the window will not freeze when browsing the directory.

SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 39
KDE Plasma Version: 5.27.10
KDE Frameworks Version: 5.111.0
Qt Version: 5.15.11
Kernel Version: 6.6.8_tkg_eevdf (64-bit)
Graphics Platform: X11
Processors: 28 × Intel® Core™ i7-14700KF
Memory: 15.3 GiB of RAM
Graphics Processor: NVIDIA GeForce RTX 4080/PCIe/SSE2
Manufacturer: Alienware
Product Name: Alienware Aurora R16

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