Emacs-w32 28.1-2 (marked as test) fails with: "Doing vfork: Resource temporarily unavailable"

[Oleksandr Gavenko <gavenkoa@gmail.com>]

I saw a new version of emacs-w32 28.1-2 (has 28.1-1) and gave it a try.

If has a problem with forking processes:

Doing vfork: Resource temporarily unavailable

If I switch to 28.1-1 the problem disappears. When I go back to 28.1-2
it reappears 100%.

I did "rebaseall".

I have Sophos antivir (corporate requirement)

Hope feedback gives a hint that something is wrong with the -2 update to Emacs.

TL;DR

Sometime I can capture elisp stacktrace:

Debugger entered--Lisp error: (file-error "Doing vfork" "Resource
temporarily unavailable")
  make-process(:name "Compiling:
/usr/share/emacs/28.1/lisp/org/org-capt..." :buffer #<buffer
*Async-native-compile-log*> :command ("/usr/bin/emacs-w32" "--batch"
"-l" "/tmp/emacs-async-comp-org-capture.el-24hS5Q.el") :sentinel
#f(compiled-function (process event) #<bytecode -0x2abad2f059c5840>)
:noquery t)
  comp-run-async-workers()
  native--compile-async("/usr/share/emacs/28.1/lisp/org/org-capture.el.gz"
nil late)
  defalias(org-capture-upgrade-templates #f(compiled-function
(templates) "Update the template list to the new format.\nTEMPLATES is
a template list, as in `org-capture-templates'.  The\nnew format
unifies all the date/week tree targets into one that\nalso allows for
an optional outline path to specify a target." #<bytecode
-0x8c8b5d2a7dcd14c>))
  require(org-capture nil t)
  load-with-code-conversion("/home/user/.emacs.d/.emacs-my"
"/home/user/.emacs.d/.emacs-my" t nil)
  load("~/.emacs.d/.emacs-my" t)
  load-with-code-conversion("/home/user/.emacs.d/init.el"
"/home/user/.emacs.d/init.el" t t)
  load("/home/user/.emacs.d/init" noerror nomessage)
  startup--load-user-init-file(#f(compiled-function () #<bytecode
-0xb22ac02d4a1b12c>) #f(compiled-function () #<bytecode
-0x1f3c686ddc0c5cb5>) t)
  command-line()
  normal-top-level()