* RE: PROBLEM: kernel warns about voluntary context switch within RCU critical section in rtw88_usb
[not found] <CA+QjRnJ+YMdOM0OzwG+Pz8-mTPo5nZVioCjbz1xY0jVSGXBk7w@mail.gmail.com>
@ 2023-08-22 1:47 ` Ping-Ke Shih
2023-08-22 5:41 ` Kalle Valo
0 siblings, 1 reply; 3+ messages in thread
From: Ping-Ke Shih @ 2023-08-22 1:47 UTC (permalink / raw)
To: Sergey Korolev, Kalle Valo, linux-wireless@vger.kernel.org,
linux-kernel@vger.kernel.org
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.
Ping-Ke
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: PROBLEM: kernel warns about voluntary context switch within RCU critical section in rtw88_usb
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
0 siblings, 1 reply; 3+ messages in thread
From: Kalle Valo @ 2023-08-22 5:41 UTC (permalink / raw)
To: Ping-Ke Shih
Cc: Sergey Korolev, linux-wireless@vger.kernel.org,
linux-kernel@vger.kernel.org
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.
--
https://patchwork.kernel.org/project/linux-wireless/list/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
^ permalink raw reply [flat|nested] 3+ messages in thread* RE: PROBLEM: kernel warns about voluntary context switch within RCU critical section in rtw88_usb
2023-08-22 5:41 ` Kalle Valo
@ 2023-08-22 5:46 ` Ping-Ke Shih
0 siblings, 0 replies; 3+ messages in thread
From: Ping-Ke Shih @ 2023-08-22 5:46 UTC (permalink / raw)
To: Kalle Valo
Cc: Sergey Korolev, linux-wireless@vger.kernel.org,
linux-kernel@vger.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
^ permalink raw reply [flat|nested] 3+ messages in thread
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[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
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