linux-kernel - Re: your recently submitted patch to fix BT RIP error shall be applied to 6.6 stable (I have a systematic crash on reboot in 6.6.23)

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Date: Wed, 27 Mar 2024 15:10:28 +0100
From: Eric Valette <eric.valette@...e.fr>
To: "Von Dentz, Luiz" <luiz.von.dentz@...el.com>
Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: your recently submitted patch to fix BT RIP error shall be
 applied to 6.6 stable (I have a systematic crash on reboot in 6.6.23)

On 27/03/2024 15:01, Von Dentz, Luiz wrote:
> Hi Eric,
> 
> Then it must have been backported, which is kind of odd given that it was just merged for an -rc release that is still not consider stable, anyway the real culprit might actually be the following:
> 
> https://patchwork.kernel.org/project/bluetooth/patch/20240327140855.896095-1-kiran.k@intel.com/


Reading the patch, I'm afraid, if I apply the patch bt will then not 
work if I reboot which is not what I want (I suspect  the firmware is 
probably not unloaded when rebooting). Or am I making wrong assumptions?

NB: I may try to be sure...

--eric



  ________________________________
> From: Eric Valette <eric.valette@...e.fr>
> Sent: Wednesday, March 27, 2024 9:46 AM
> To: Von Dentz, Luiz <luiz.von.dentz@...el.com>
> Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
> Subject: Re: your recently submitted patch to fix BT RIP error shall be applied to 6.6 stable (I have a systematic crash on reboot in 6.6.23)
> 
> On 27/03/2024 14:41, Eric Valette wrote:
>> On 27/03/2024 14:36, Von Dentz, Luiz wrote:
>>> Hi Eric,
>>>
>>> This shouldn't apply to 6.6 kernel, the regression was introduced with:
>>>
>>> commit 711c35949648ba19f54bce27b49ced0ad90b19b9
>>> Author: Luiz Augusto von Dentz <luiz.von.dentz@...el.com>
>>> Date:   Tue Jan 9 13:45:40 2024 -0500
>>>
>>>       Bluetooth: hci_core: Cancel request on command timeout
>>>
>>> So, you only really need that fix if you were using 6.9-rc1
>>
>> Well I get the same error message and with the fix it works again.
>>
>> Will check the 6.6.22 6.6.23 patch.
>>
>> Could you point me to the problematic patch via adiff that I could
>> easilly check?
> 
> Found it. The patch adds the function hci_send_cmd_sync and I have it in
> my 6.6.23 kernel tree.
> 
> grep hci_send_cmd_sync net/bluetooth/hci_core.c
> static void hci_send_cmd_sync(struct hci_dev *hdev, struct sk_buff *skb)
>                   hci_send_cmd_sync(hdev, skb);
> 
> more Makefile
> # SPDX-License-Identifier: GPL-2.0
> VERSION = 6
> PATCHLEVEL = 6
> SUBLEVEL = 23
> EXTRAVERSION =
> 
> -- eric
> 
> 
>