kern/58538: cdce watchdog timeout

[Thomas Klausner <wiz%NetBSD.org@localhost>]

>Number:         58538
>Category:       kern
>Synopsis:       cdce watchdog timeout
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Aug 02 10:20:00 +0000 2024
>Originator:     Thomas Klausner
>Release:        NetBSD 10.99.11
>Organization:

>Environment:
	
	
Architecture: x86_64
Machine: amd64
>Description:
After some uptime, under no particular heavy network conditions AFAICT,
cdce sometimes stops working with the following kernel output:

[ 2766727.403265] cdce0: usb error on tx: IOERROR
[ 2766732.393202] cdce0: watchdog timeout
[ 2766737.393139] xhci2: xhci_reset_endpoint: endpoint 0x2: timed out
[ 2766737.393139] xhci2: endpoint 0x2 failed to stop
[ 2766737.393139] xhci2: xhci_set_dequeue: endpoint 0x2: timed out
[ 2766737.393139] cdce0: usb error on tx: IOERROR
[ 2766742.393076] cdce0: watchdog timeout
[ 2766747.393013] xhci2: xhci_reset_endpoint: endpoint 0x2: timed out
[ 2766747.393013] xhci2: endpoint 0x2 failed to stop
[ 2766747.393013] xhci2: xhci_set_dequeue: endpoint 0x2: timed out
[ 2766747.393013] cdce0: usb error on tx: IOERROR
[ 2766752.392951] cdce0: watchdog timeout
[ 2766757.382888] xhci2: xhci_reset_endpoint: endpoint 0x2: timed out
[ 2766757.382888] xhci2: endpoint 0x2 failed to stop
[ 2766757.382888] xhci2: xhci_set_dequeue: endpoint 0x2: timed out
[ 2766757.392888] cdce0: usb error on tx: IOERROR
[ 2766762.382826] cdce0: watchdog timeout
[ 2766767.382763] xhci2: xhci_reset_endpoint: endpoint 0x2: timed out
[ 2766767.382763] xhci2: endpoint 0x2 failed to stop
[ 2766767.382763] xhci2: xhci_set_dequeue: endpoint 0x2: timed out
[ 2766767.382763] cdce0: usb error on tx: IOERROR
[ 2766772.382701] cdce0: watchdog timeout
[ 2766777.382638] xhci2: xhci_reset_endpoint: endpoint 0x2: timed out
[ 2766777.382638] xhci2: endpoint 0x2 failed to stop
[ 2766777.382638] xhci2: xhci_set_dequeue: endpoint 0x2: timed out
[ 2766777.382638] cdce0: usb error on tx: IOERROR
[ 2766782.382575] cdce0: watchdog timeout
[ 2766787.382513] xhci2: xhci_reset_endpoint: endpoint 0x2: timed out
[ 2766787.382513] xhci2: endpoint 0x2 failed to stop
[ 2766787.382513] xhci2: xhci_set_dequeue: endpoint 0x2: timed out
[ 2766787.382513] cdce0: usb error on tx: IOERROR
[ 2766795.382413] cdce0: watchdog timeout
[ 2766800.382351] xhci2: xhci_reset_endpoint: endpoint 0x2: timed out
[ 2766800.382351] xhci2: endpoint 0x2 failed to stop
[ 2766800.382351] xhci2: xhci_set_dequeue: endpoint 0x2: timed out
[ 2766800.382351] cdce0: usb error on tx: IOERROR
[ 2766805.382289] cdce0: watchdog timeout
[ 2766810.382228] xhci2: xhci_reset_endpoint: endpoint 0x2: timed out
[ 2766810.382228] xhci2: endpoint 0x2 failed to stop
[ 2766810.382228] xhci2: xhci_set_dequeue: endpoint 0x2: timed out
[ 2766810.392227] cdce0: usb error on tx: IOERROR
[ 2766818.272131] xhci2: endpoint 0x81 failed to stop
[ 2766818.272131] xhci2: xhci_set_dequeue: endpoint 0x81: timed out
[ 2766828.272009] cdce0: detached
[ 2766828.272009] cdce0: at uhub4 port 2 (addr 1) disconnected
[ 2766839.361870] uhub4: device problem, disabling port 1

cdce0 at uhub4 port 2 configuration 3 interface 0
cdce0: Realtek (0x0bda) USB 10/100/1G/2.5G LAN (0x8156), rev 3.20/31.04, addr 1
cdce0: Ethernet address a0:ce:c8:a8:c0:6b

uhub4 at usb4: NetBSD (0x0000) xHCI root hub (0x0000), class 9/0, rev 3.00/1.00, addr 0
uhub4: 2 ports with 2 removable, self powered

usb4 at xhci2: USB revision 3.1

xhci2 at pci11 dev 0 function 4: AMD 19h/6xh USB 3.1 xHCI (rev. 0x00)
xhci2: 64-bit DMA
xhci2: interrupting at msix6 vec 0
xhci2: xHCI version 1.20

pci11 at ppb10 bus 11
pci11: i/o space, memory space enabled, rd/line, wr/inv ok


>How-To-Repeat:
Run NetBSD, use cdce(4) interface, wait.
>Fix:
Please.

>Unformatted: