Re: kern/58730: NFS client locks up waiting on nfscn2

["Martin Husemann via gnats" <gnats-admin%NetBSD.org@localhost>]

The following reply was made to PR kern/58730; it has been noted by GNATS.

From: Martin Husemann <martin%duskware.de@localhost>
To: Rin Okuyama <rokuyama.rk%gmail.com@localhost>
Cc: gnats-bugs%netbsd.org@localhost
Subject: Re: kern/58730: NFS client locks up waiting on nfscn2
Date: Tue, 5 Nov 2024 12:29:42 +0100

 On Tue, Nov 05, 2024 at 07:34:22PM +0900, Rin Okuyama wrote:
 > Have you found out the blamed commit? I was about opening a PR for
 > similar problems below, but stalled on narrowing down the commits.
 
 Yes:
 
 cvs rdiff -u -r1.325 -r1.326 src/sys/dev/usb/ehci.c
 cvs rdiff -u -r1.40 -r1.41 src/sys/dev/usb/ehcireg.h
 cvs rdiff -u -r1.52 -r1.53 src/sys/dev/usb/ehcivar.h
 
 broke things for me.
 
 I do
 
  cd sys/dev/usb && cvs up -r1.325 ehci.c && cvs up -r1.40 ehcireg.h && \
 	cvs up -r1.52 ehcivar.h
 
 before building a kernel for the Kirkwood machine and everything is all fine.
 
 Nick suggested to review mvgbe bus dma sync operations (and I was planning
 to do that), but now saw that USB is affected too, so something in this commit
 must be wrong (and unrelated to mvgbe bugs).
 
 Martin