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

["Rin Okuyama via gnats" <gnats-admin%NetBSD.org@localhost>]

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

From: Rin Okuyama <rokuyama.rk%gmail.com@localhost>
To: gnats-bugs%netbsd.org@localhost, kern-bug-people%netbsd.org@localhost,
 gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost, martin%NetBSD.org@localhost
Cc: 
Subject: Re: kern/58730: NFS client locks up waiting on nfscn2
Date: Tue, 5 Nov 2024 19:34:22 +0900

 On 2024/11/05 19:10, Martin Husemann via gnats wrote:
 > I just noticed that on this machine with a -current kernel w/o
 > backing out the ehci changes probing usb devices takes ages and some
 > ports are disabled (at boot time).
 
 Have you found out the blamed commit? I was about opening a PR for
 similar problems below, but stalled on narrowing down the commits.
 
 For me, the following problem disappear if the entire dev/usb is
 replaced by that of netbsd-10 branch...
 
 I observe a similar problem for ehci(4) on evbarm/NSLU2. Also, for
 ehci(4) on landisk/HDL-U, attaching sd(4) takes few minutes:
 
 ````
 waiting for devices: scsibus0 sd0
 waiting for devices: scsibus0 sd0
 waiting for devices: scsibus0 sd0
 umass0: BBB bulk-in stall clear failed, TIMEOUT
 (snip)
 waiting for devices: scsibus0 sd0
 umass0: BBB reset failed, TIMEOUT
 sd0: 232 GB, 16383 cyl, 16 head, 63 sec, 512 bytes/sect x 488521728 sectors
 ````
 
 It also stalls during mount (both for RO as root, and RW with fstab):
 
 ````
 umass0: BBB bulk-in stall clear failed, TIMEOUT
 umass0: BBB reset failed, TIMEOUT
 ````
 
 But once it gets mounted, no additional errors appear anymore.
 
 Thanks,
 rin