[Bug 221340] uas driver hangs and causes usb reset

bugzilla-daemon
2026-04-10T16:45:52Z

--- Comment #4 from DaisyTheFoxxo@proton.me ---
(In reply to Michał Pecio from comment #3)
> There is also Unmap/Read sub-channel in this log.
>
> By "hang", do you mean that no I/O happens for 30 seconds or some other time
> before these messages show up?

yes

>
> BTW, if you run (as root)
> echo 'func handle_tx_event +p' >/proc/dynamic_debug/control
>
> do you see anything new appear in dmesg at this time?
>
> That would point to some "action" at xHCI layer, though I suppose it's also
> possible that nothing interesting happens and the device simply never
> responds to some commands under some circumstances.

I have been having difficulties reproducing the bug recently, I will let you
know when it happens again