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Date:      Mon, 10 Jan 2022 12:38:48 +0000
From:      tech-lists <tech-lists@zyxst.net>
To:        freebsd-hackers@freebsd.org
Subject:   sane-find-scanner on the USB bus causes a crash
Message-ID:  <Ydwo2Ppjf/mfdZ1d@ceres.zyxst.net>

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Hi,

There is a *very old* PR open here :=20
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D207431
about this issue. It was from 10.2 then someone else confirmed it was happe=
ning
on stable/11 and i've found it still happening with stable/13. Posting to=
=20
hackers@ hoping someone knowledgeable will look at this. How is it that
the usb subsystem can cause a crash to console?

I have an old desktop c.2010 vintage im trying to get working well with sta=
ble/13.

The hw info is at https://bsd-hardware.info/?probe=3D0f0ae001cd

The context is stable/13-n248872-2c7441c86ef: Thu Jan  6 02:34:00 UTC 2022=
=20
root@releng3.nyi.freebsd.org:/usr/obj/usr/src/amd64.amd64/sys/GENERIC  amd64

8GB RAM, zfs raidz1 (3*1TB disks)

packages were installed from pkg.freebsd.org

if I run sane-find-scanner -q

this happens:

Jan 10 00:41:29 kernel: ugen4.2: <EPSON EPSON Perfection V37/V370> at usbus4

as expected, but a few seconds later, this happens:

Jan 10 00:50:33 kernel: ata2: FAILURE - odd-sized DMA transfer attempt 5 % 2
Jan 10 00:50:33 kernel: ata2: setting up DMA failed
Jan 10 00:53:36 syslogd: kernel boot file is /boot/kernel/kernel
Jan 10 00:53:36 kernel: ata3: already running!
Jan 10 00:53:36 kernel: ata2: already running!
Jan 10 00:53:36 kernel: spin lock 0xffffffff81cac3c0 (callout) held by=20
0xfffffe000f91f3a0 (tid 100003) too long

resulting in a lockup at next write then drops to console, press any key to=
 reboot.

What info would I need to capture to try to resolve this?

The system is fine in every way apart from this.

thanks,
--=20
J.

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