[Bug 237666] repeated messages of "uhub_reattach_port: giving up port reset - device vanished"

Mon Aug 24 20:18:14 UTC 2020

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=237666

Mark Millard <marklmi26-fbsd at yahoo.com> changed:

           What    |Removed                     |Added
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                 CC|                            |marklmi26-fbsd at yahoo.com

--- Comment #126 from Mark Millard <marklmi26-fbsd at yahoo.com> ---
(In reply to Bjoern A. Zeeb from comment #125)

Your repeating sequence with the "(USB_ERR_TIMEOUT, ignored)"
text prompts the following note for a RPi4B context (edk2
UEFI/ACPI based boot):

I found that trying to boot with a kernel that had been built
with -mcpu=cortex-a72 the RPi4B would not boot and was reporting
such a repeating sequence.  (No microsd card is present for the
configuration: direct USB3 SSD based booting.)

But when the kernel is instead build with -mcpu=cortex-a53 the
kernel boots, getting only one:

xhci0: Resetting controller

The two -mcpu's select the same -march value but different -mtune
values. To my knowledge, the only differences should be performance
related as far as operation goes. So timing sensitive for the
problem.

For reference for the failed boot (cortex-a72 tuning) reports:
(I later show a success from cortex-a53 tuning.)

ugen0.1: <Generic XHCI root HUB> at usbus0
ugen1.1: <DWCOTG OTG Root HUB> at usbus1
uhub0 on usbus0
uhub1 on usbus1
uhub1: <DWCOTG OTG Root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus1
uhub0: <Generic XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0
uhub1: 1 port with 1 removable, self powered
uhub0: 5 ports with 4 removable, self powered
Root mount waiting for: usbus0 CAM
xhci0: Resetting controller
usb_alloc_device: device init 2 failed (USB_ERR_TIMEOUT, ignored)
ugen0.2: <Unknown > at usbus0 (disconnected)
uhub_reattach_port: could not allocate new device
Root mount waiting for: usbus0 CAM
usb_alloc_device: device init 2 failed (USB_ERR_TIMEOUT, ignored)
ugen0.2: <Unknown > at usbus0 (disconnected)
uhub_reattach_port: could not allocate new device
uhub0: at usbus0, port 1, addr 1 (disconnected)
uhub0: detached
uhub0 on usbus0
uhub0: <Generic XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0
uhub0: 5 ports with 4 removable, self powered
Root mount waiting for: CAM
xhci0: Resetting controller
usb_alloc_device: device init 2 failed (USB_ERR_TIMEOUT, ignored)
ugen0.2: <Unknown > at usbus0 (disconnected)
uhub_reattach_port: could not allocate new device
Root mount waiting for: CAM
usb_alloc_device: device init 2 failed (USB_ERR_TIMEOUT, ignored)
ugen0.2: <Unknown > at usbus0 (disconnected)
uhub_reattach_port: could not allocate new device
uhub0: at usbus0, port 1, addr 1 (disconnected)
uhub0: detached
uhub0 on usbus0
uhub0: <Generic XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0
uhub0: 5 ports with 4 removable, self powered
Root mount waiting for: CAM
xhci0: Resetting controller
usb_alloc_device: device init 2 failed (USB_ERR_TIMEOUT, ignored)
ugen0.2: <Unknown > at usbus0 (disconnected)
uhub_reattach_port: could not allocate new device
Root mount waiting for: CAM
usb_alloc_device: device init 2 failed (USB_ERR_TIMEOUT, ignored)
Root mount waiting for:ugen0.2: <Unknown > at usbus0 (disconnected)
CAM
uhub_reattach_port: could not allocate new device
uhub0: at usbus0, port 1, addr 1 (disconnected)
uhub0: detached
uhub0 on usbus0
uhub0: <Generic XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0
uhub0: 5 ports with 4 removable, self powered
Root mount waiting for: CAM
xhci0: Resetting controller
usb_alloc_device: device init 2 failed (USB_ERR_TIMEOUT, ignored)
ugen0.2: <Unknown > at usbus0 (disconnected)
uhub_reattach_port: could not allocate new device
Root mount waiting for: CAM
Mounting from ufs:/dev/gpt/RPi4Broot failed with error 2; retrying for 10 more
seconds
usb_alloc_device: device init 2 failed (USB_ERR_TIMEOUT, ignored)
ugen0.2: <Unknown > at usbus0 (disconnected)
uhub_reattach_port: could not allocate new device
uhub0: at usbus0, port 1, addr 1 (disconnected)
uhub0: detached
uhub0 on usbus0
uhub0: <Generic XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0
uhub0: 5 ports with 4 removable, self powered
xhci0: Resetting controller
usb_alloc_device: device init 2 failed (USB_ERR_TIMEOUT, ignored)
ugen0.2: <Unknown > at usbus0 (disconnected)
uhub_reattach_port: could not allocate new device
usb_alloc_device: device init 2 failed (USB_ERR_TIMEOUT, ignored)
ugen0.2: <Unknown > at usbus0 (disconnected)
uhub_reattach_port: could not allocate new device
uhub0: at usbus0, port 1, addr 1 (disconnected)
uhub0: detached
uhub0 on usbus0
uhub0: <Generic XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0
uhub0: 5 ports with 4 removable, self powered
xhci0: Resetting controller
usb_alloc_device: device init 2 failed (USB_ERR_TIMEOUT, ignored)
ugen0.2: <Unknown > at usbus0 (disconnected)
uhub_reattach_port: could not allocate new device
usb_alloc_device: device init 2 failed (USB_ERR_TIMEOUT, ignored)
ugen0.2: <Unknown > at usbus0 (disconnected)
uhub_reattach_port: could not allocate new device
uhub0: at usbus0, port 1, addr 1 (disconnected)
uhub0: detached
uhub0 on usbus0
uhub0: <Generic XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0
uhub0: 5 ports with 4 removable, self powered
xhci0: Resetting controller
usb_alloc_device: device init 2 failed (USB_ERR_TIMEOUT, ignored)
ugen0.2: <Unknown > at usbus0 (disconnected)
uhub_reattach_port: could not allocate new device
usb_alloc_device: device init 2 failed (USB_ERR_TIMEOUT, ignored)
ugen0.2: <Unknown > at usbus0 (disconnected)
uhub_reattach_port: could not allocate new device
uhub0: at usbus0, port 1, addr 1 (disconnected)
uhub0: detached
uhub0 on usbus0
uhub0: <Generic XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0
uhub0: 5 ports with 4 removable, self powered
xhci0: Resetting controller
usb_alloc_device: device init 2 failed (USB_ERR_TIMEOUT, ignored)
ugen0.2: <Unknown > at usbus0 (disconnected)
uhub_reattach_port: could not allocate new device
Mounting from ufs:/dev/gpt/RPi4Broot failed with error 2.

Loader variables:
 vfs.root.mountfrom=ufs:/dev/gpt/RPi4Broot

Manual root filesystem specification:
 <fstype>:<device> [options]
     Mount <device> using filesystem <fstype>
     and with the specified (optional) option list.

   eg. ufs:/dev/da0s1a
       zfs:zroot/ROOT/default
       cd9660:/dev/cd0 ro
         (which is equivalent to: mount -t cd9660 -o ro /dev/cd0 /)

 ?               List valid disk boot devices
 .               Yield 1 second (for background tasks)
 <empty line>    Abort manual input

mountroot> usb_alloc_device: device init 2 failed (USB_ERR_TIMEOUT, ignored)
ugen0.2: <Unknown > at usbus0 (disconnected)
uhub_reattach_port: could not allocate new device
uhub0: at usbus0, port 1, addr 1 (disconnected)
uhub0: detached
uhub0 on usbus0
uhub0: <Generic XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0
uhub0: 5 ports with 4 removable, self powered
. . .

(It keeps going.)

For reference the successful boot (cortex-a53 tuning) reports:

ugen0.1: <Generic XHCI root HUB> at usbus0
ugen1.1: <DWCOTG OTG Root HUB> at usbus1
uhub0 on usbus0
uhub1 on usbus1
uhub0: <Generic XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0
uhub1: <DWCOTG OTG Root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus1
uhub1: 1 port with 1 removable, self powered
uhub0: 5 ports with 4 removable, self powered
Root mount waiting for: usbus0 CAM
xhci0: Resetting controller
usb_alloc_device: device init 2 failed (USB_ERR_TIMEOUT, ignored)
ugen0.2: <Unknown > at usbus0 (disconnected)
uhub_reattach_port: could not allocate new device
Root mount waiting for: usbus0 CAM
usb_alloc_device: device init 2 failed (USB_ERR_TIMEOUT, ignored)
ugen0.2: <Unknown > at usbus0 (disconnected)
uhub_reattach_port: could not allocate new device
uhub0: at usbus0, port 1, addr 1 (disconnected)
uhub0: detached
uhub0 on usbus0
uhub0: <Generic XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0
uhub0: 5 ports with 4 removable, self powered
Root mount waiting for: CAM
ugen0.2: <vendor 0x2109 USB2.0 Hub> at usbus0
uhub2 on uhub0
uhub2: <vendor 0x2109 USB2.0 Hub, class 9/0, rev 2.10/4.21, addr 1> on usbus0
uhub2: 4 ports with 4 removable, self powered
Root mount waiting for: CAM
Root mount waiting for: CAM
ugen0.3: <OWC Envoy Pro mini> at usbus0
umass0 on uhub0
umass0: <OWC Envoy Pro mini, class 0/0, rev 3.00/1.00, addr 2> on usbus0
umass0:  SCSI over Bulk-Only; quirks = 0x0100
umass0:0:0: Attached to scbus0
Root mount waiting for: CAM
Root mount waiting for: CAM
Root mount waiting for: CAM
da0 at umass-sim0 bus 0 scbus0 target 0 lun 0
da0: <OWC Envoy Pro mini 0> Fixed Direct Access SPC-4 SCSI device
da0: Serial Number 000000000011
da0: 400.000MB/s transfers
da0: 228936MB (468862128 512 byte sectors)
da0: quirks=0x2<NO_6_BYTE>
Setting hostuuid: a4f7fbeb-f668-11de-b280-ebb65474e619.
Setting hostid: 0xcd8e9e25.
Starting file system checks:
/dev/gpt/RPi4Broot: FILE SYSTEM CLEAN; SKIPPING CHECKS
. . .

head -r363590 was in use for the experiments.

I only noticed this issue when I stopped using the same
media to boot a Rock64 and the RPi4B: The Rock64 is a
cortex-a53 context and I'd been using only that kind of
kernel build until I made separate RPi4B media. I
reverted to building with cortex-a53 for the RPi4B on
the separate media in order to have it operational.

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