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Date:      Sun, 13 Sep 2020 22:29:15 -0700
From:      Adrian Chadd <adrian.chadd@gmail.com>
To:        Warner Losh <imp@bsdimp.com>
Cc:        FreeBSD Current <freebsd-current@freebsd.org>, Hans Petter Selasky <hps@selasky.org>, "Bjoern A. Zeeb" <bz@freebsd.org>
Subject:   Re: Panic with wifi + usb in latest FreeBSD-current
Message-ID:  <CAJ-VmompP1FHNsn6n-68RPLrJ_7bAqdQZF8AGBZ9oyaKD8-=Dg@mail.gmail.com>
In-Reply-To: <CANCZdfpd9DzW_gpBuQ9vVuxZ47ivCYmSjLnea3wkk_2bQ2QVBQ@mail.gmail.com>
References:  <CANCZdfpd9DzW_gpBuQ9vVuxZ47ivCYmSjLnea3wkk_2bQ2QVBQ@mail.gmail.com>

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Yeah, this was also reported in #freebsd-wireless today.

Is there a lock being held in the rtwn path that shouldn't be?


-adrian



On Sun, 13 Sep 2020 at 21:30, Warner Losh <imp@bsdimp.com> wrote:

> I'm running current as of -2h ago.
>
> When I plug in my rtwn0 device and it configures, etc, I get:
>
> rtwn0 on uhub 0
> rtwn0: <realtek 802.11n WLAN Adapter, class 0/0, rev 2.00/2.00, addr 4> on
> usbus0
> rtwn0: MAC/BB RTL8188CUS, RF 6052 1T1R
> <date> host dpa_supplicant[1619]: ioctl[SIOS80211, op=20, val=0,
> arg_len=7]: Invalid argument
> panic: sleepq_add: td <hex> to sleep on wchan <hex> with sleeping
> prohibited
> cpuid = 5
> time = 1600057358
> KDB: stack backtrace:
> ...
> panic()
> sleepq_add()
> _cv_wait()
> usbd_do_request_flags
> rtwn_do_request
> rtwn_usb_read_4
> rtwn_rx_common
> rtwn_bulk_rx_callback
> usbd_callback_wrapper
> usb_command_wrapper
> usb_callback_proc
> usb_process
> ...
>
> I've done a fresh installworld and installkernel, but am running packages
> from late may since I've not updated them. I've updated the iichid and
> drm-kmod ports and rebuilt them and reinstalled them as well (so I know
> they aren't out of date).
>
> Has anybody else seen this?
>
> Warner
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