From: Ping-Ke Shih <pkshih@realtek.com>
To: Kalle Valo <kvalo@kernel.org>
Cc: Sergey Korolev <korolev.sergey@gmail.com>,
"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: RE: PROBLEM: kernel warns about voluntary context switch within RCU critical section in rtw88_usb
Date: Tue, 22 Aug 2023 05:46:53 +0000 [thread overview]
Message-ID: <cf3ca98d6c18482eb63e3713f67e44e6@realtek.com> (raw)
In-Reply-To: <87pm3fws4m.fsf@kernel.org>
> -----Original Message-----
> From: Kalle Valo <kvalo@kernel.org>
> Sent: Tuesday, August 22, 2023 1:42 PM
> To: Ping-Ke Shih <pkshih@realtek.com>
> Cc: Sergey Korolev <korolev.sergey@gmail.com>; linux-wireless@vger.kernel.org;
> linux-kernel@vger.kernel.org
> Subject: Re: PROBLEM: kernel warns about voluntary context switch within RCU critical section in rtw88_usb
>
> Ping-Ke Shih <pkshih@realtek.com> writes:
>
> > From: Sergey Korolev <korolev.sergey@gmail.com>
> > Sent: Monday, August 21, 2023 10:28 PM
> > To: Ping-Ke Shih <pkshih@realtek.com>; Kalle Valo <kvalo@kernel.org>; linux-wireless@vger.kernel.org;
> linux-kernel@vger.kernel.org
> > Subject: PROBLEM: kernel warns about voluntary context switch within RCU critical section in rtw88_usb
> >>
> >> Please note I use an unmodified driver from the upstream 28c11c29494f1b34e39641eead9c60a8bd26170d
> >> ("wifi: rtw88: fix not entering PS mode after AP stops") build for 6.2 kernel (Ubuntu 23.04).
> >
> > I feel Martin has been addressed this problem during development of SDIO and USB
> > by 8a1e2fd8e2da ("wifi: rtw88: Move register access from rtw_bf_assoc() outside the RCU")
> > Please take a look if this patch is existing in your source.
>
> Commit 8a1e2fd8e2da was merged to v6.3-rc1 so v6.2 won't have it.
>
Sergey said he uses driver from 28c11c29494f that is v6.4-rc5 or v6.5, so
seemingly it should include Martin's patch. Not sure what is wrong.
Ping-Ke
prev parent reply other threads:[~2023-08-22 5:47 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CA+QjRnJ+YMdOM0OzwG+Pz8-mTPo5nZVioCjbz1xY0jVSGXBk7w@mail.gmail.com>
2023-08-22 1:47 ` PROBLEM: kernel warns about voluntary context switch within RCU critical section in rtw88_usb Ping-Ke Shih
2023-08-22 5:41 ` Kalle Valo
2023-08-22 5:46 ` Ping-Ke Shih [this message]
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