[Bug 277389] Reproduceable low memory freeze on 14.0-RELEASE-p5

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=277389

--- Comment #28 from pascal.guitierrez@gmail.com ---
(In reply to Mark Millard from comment #27)

i've tried using a -stable kernel (FreeBSD 14.0-STABLE #0
stable/14-n266971-91c1c36102a6: Thu Mar 14 04:49:15 UTC 2024), same result.

command line used: iozone -w -i 1 -l 512 -r 4k -s 1g

system deadlocks from OOM after several seconds:

last pid: 96643;  load averages:  5.06,  1.15,  0.41                           
               up 0+00:02:17  14:24:50
542 processes: 1 running, 541 sleeping
CPU:  1.3% user,  0.0% nice,  1.3% system,  0.0% interrupt, 97.4% idle
Mem: 4228K Active, 4096B Inact, 8236K Laundry, 31G Wired, 104M Free
ARC: 29G Total, 224M MFU, 29G MRU, 52M Header, 5449K Other
     28G Compressed, 28G Uncompressed, 1.01:1 Ratio


i did not set those nullfs values for this test.

i can reproduce reliably on 16GB and 32GB machines.

can anyone else reproduce this?

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