[Bug 282098] bhyve is eating my memory and running far beyond the configured limits

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=282098

            Bug ID: 282098
           Summary: bhyve is eating my memory and running far beyond the
                    configured limits
           Product: Base System
           Version: 13.3-STABLE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: bhyve
          Assignee: virtualization@FreeBSD.org
          Reporter: elk-freebsd@wetznet.de

Looks like there is a memory leak in bhyve. 

I running Truenas 13.3 which is on Freebsd 13.3-RELEASE-p4 on AMD Ryzen 5 PRO
4650G

bhyve is configured for two VMs one with 4GB (Windows) and one with 8GB (linux)

But If I start memory intensive actions inside the linux VM inside a docker
this raised the memory usage far beyond the 8GB..
14,6GB was the last I saw yesterday and this morning the VMs were killed by
Truenas cos of OOM.

Inside the vm the memory is stable at max 8GB. Swap is used sometimes as well
internal the vm.

The vm is configured with this xml ...

<domain type='bhyve' xmlns:bhyve='http://libvirt.org/schemas/domain/bhyve/1.0'>
   <name>1_Jellyfin</name>
   <uuid>615af2a2-84e0-434e-b544-b4c9e7c0872d</uuid>
   <title>Jellyfin</title>
   <description>Jellyfin</description>
   <memory unit='KiB'>8388608</memory>
   <currentMemory unit='KiB'>8388608</currentMemory>
   <vcpu placement='static'>8</vcpu>
   <os>
     <type arch='x86_64'>hvm</type>
     <loader readonly='yes'
type='pflash'>/usr/local/share/uefi-firmware/BHYVE_UEFI.fd</loader>
     <boot dev='hd'/>
   </os>
   <features>
     <acpi/>
     <msrs unknown='ignore'/>
   </features>
   <cpu>
     <topology sockets='1' dies='1' cores='4' threads='2'/>
   </cpu>
   <clock offset='localtime'/>
.....

But the bhyve VM Jellyfin is using 14G at this moment
Wed Sep 18 14:24:00 CEST 2024
   UID  PID PPID  C PRI NI      VSZ      RSS MWCHAN   STAT TT        TIME
COMMAND
     0 2106    1 10  20  0 14774616 14149064 kqread   SC    - 1689:51.13 
bhyve: 1_Jellyfin (bhyve)

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