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

[Rin Okuyama <rokuyama.rk%gmail.com@localhost>]

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