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

[bugzilla-noreply at freebsd.org]

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

Bjoern A. Zeeb <bz at FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |bz at FreeBSD.org

--- Comment #121 from Bjoern A. Zeeb <bz at FreeBSD.org> ---
Hi,

I just unplugged a USB hub (cascade) USB-C (usb3 port) -> usb2 hub -> usb2 hub
-> 3 uftdis and another uftdi at the first usb2 hub.

After that console endlessly started to scroll with:

uhub_reattach_port: giving up port reset - device vanished
uhub_reattach_port: giving up port reset - device vanished
uhub_reattach_port: giving up port reset - device vanished
uhub_reattach_port: giving up port reset - device vanished
uhub_reattach_port: giving up port reset - device vanished
uhub_reattach_port: giving up port reset - device vanished
uhub_reattach_port: giving up port reset - device vanished
uhub_reattach_port: giving up port reset - device vanished


as well and didn't clear up.  It is clear the device is gone and it is correct,
why do we not clean this up?

I did run usbconfig in another shell and it is locked:

# usbconfig
load: 0.03  cmd: usbconfig 5017 [USB config SX lock] 1.36r 0.00u 0.00s 0% 2496k
mi_switch+0xc1 sleepq_catch_signals+0x3d1 sleepq_wait_sig+0x9
_sx_xlock_hard+0x451 usbd_enum_lock_sig+0xa1 usb_ref_device+0x221
usb_open+0x106 devfs_open+0x145 VOP_OPEN_APV+0x1c vn_open_vnode+0x1eb
vn_open_cred+0x3b7 kern_openat+0x249 amd64_syscall+0x119
fast_syscall_common+0xf8

(coming back to this now after applying the two sysctls mentioned in this
thread I see):

ugen0.1: <0x8086 XHCI root HUB> at usbus0, cfg=0 md=HOST spd=SUPER (5.0Gbps)
pwr=SAVE (0mA)

Which is not all that is there on this either...


I have saved some logs but I don't know how long I can keep the device in this
state (probably another hour or so).  I'll save as much dmesg/log I can.
In case you want me to quickly test something let me know.

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