freebsd stable - Nov 2019 - bhyve memory leak in stable/11

After 2 days of uptime there is a guest that should have only 2GB of RAM but
uses nearly 22G "extra":

# ps -o vsz,rss,command | grep sfile01
29234040 24851428 bhyve: sfile01 (bhyve)

# bhyvectl --vm=sfile01 --get-all | grep -B1 -A1 mem
ID  Length      Name
0   2048MB      sysmem
1   2048KB      bootrom
Address     Length      Segment     Offset      Prot  Flags
0           2048MB      sysmem      0           RWX
FFE00000    2048KB      bootrom     0           R-X
--
number of ExtINTs delivered to vcpu             0
Resident memory                                 2085765120
Wired memory                                    0
vcpu total runtime                              5701638719326

Also, there is another guest vm using 23696M despite of limit 2048M,
and another one using 25238M despite of limit 4096M,
and another one using 52867M despite of limit 40960M.

Please point me to right direction for debugging this.

18.11.2019 19:03, Eugene Grosbein wrote:
> Please point me to right direction for debugging this.
Is it normal that over 1/3rd of 360G total physical RAM is in
"Laundry" category in addition to 173G Wired?

last pid: 20372;  load averages:  8.04,  7.73,  7.84                       up
2+05:55:29  16:04:02
130 processes: 3 running, 126 sleeping, 1 zombie
CPU:  1.1% user,  0.0% nice, 13.2% system,  0.1% interrupt, 85.7% idle
Mem: 42G Active, 8325M Inact, 112G Laundry, 173G Wired, 7809M Free
ARC: 131G Total, 28G MFU, 90G MRU, 11M Anon, 2442M Header, 10G Other
     107G Compressed, 363G Uncompressed, 3.41:1 Ratio
Swap: 64G Total, 16G Used, 48G Free, 24% Inuse

  PID USERNAME    THR PRI NICE   SIZE    RES STATE   C   TIME    WCPU COMMAND
78042 root         34  20    0 54328M 52867M kqread  7  81.4H 210.63% bhyve:
sappdev (bhyve)
59085 root         20  20    0 31512M 25256M kqread  6 490:16  16.25% bhyve:
sdc01 (bhyve)
59568 root         28  20    0 28549M 24270M kqread  6 143:32   1.22% bhyve:
sfile01 (bhyve)
60011 root         20  20    0 30262M 23697M kqread 27 121:22   1.08% bhyve:
skms01 (bhyve)
63676 root         34  20    0 16418M 12799M kqread  3 113:06  19.92% bhyve:
solap (bhyve)
26819 root         26  20    0 12321M 10472M kqread 28 151:43  10.12% bhyve:
srdapp01 (bhyve)
63662 root         34  20    0  8226M  6969M kqread  4 114:52  20.36% bhyve:
ssql01 (bhyve)