port-arm/57108: X server on Raspberry Pi 4 exits with an error

[cryintothebluesky%gmail.com@localhost]

>Number:         57108
>Category:       port-arm
>Synopsis:       X server on Raspberry Pi 4 exits with an error
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-arm-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Dec 11 14:05:00 +0000 2022
>Originator:     Sad Clouds
>Release:        NetBSD 9.99.108
>Organization:
>Environment:
NetBSD rp4 9.99.108 NetBSD 9.99.108 (GENERIC64)
>Description:
Running ktruss on X process shows the following trace when it exits. Looks like it may be related to setcontext() returning error.

  1852   1852 X        SIGALRM caught handler=0xbe2d390 mask=0x0 code=0x0
  1852   1852 X        setcontext(0xffffffb051e8)  Err#22 EINVAL
  1852   1852 X        exit(0x16)
  1852    345 X        stop kernel
  1852    345 X        resume kernel
  1852    345 X        poll                        Err#4 EINTR
  1852   1854 X        resume kernel
  1852   1878 X        resume kernel
  1852   1852 X        stop kernel
  1852   1852 X        resume kernel
  1852   1850 X        resume kernel
  1852   1907 X        resume kernel
  1852   1852 X        stop kernel
  1852   1852 X        resume kernel
  1852   1852 X        stop kernel
  1852   1852 X        resume kernel
  1852   1852 X        stop kernel
  1852   1852 X        resume kernel
  1852   1852 X        stop kernel
  1852   1852 X        resume kernel
  1852   1852 X        stop kernel
  1852   1852 X        resume kernel

>How-To-Repeat:
Run startx, open xterm window and execute "find /" X server terminates immediately.
>Fix: