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Date:   Sat, 23 Oct 2021 06:47:12 -0700
From:   syzbot <syzbot+f2725165900304ec97b6@...kaller.appspotmail.com>
To:     "Fabio M. De Francesco" <fmdefrancesco@...il.com>
Cc:     fmdefrancesco@...il.com, johan.hedberg@...il.com,
        linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
        luiz.dentz@...il.com, marcel@...tmann.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] INFO: trying to register non-static key in
 hci_uart_tty_receive (3)

> On Saturday, October 23, 2021 1:54:24 AM CEST syzbot wrote:
>> Hello,
>> 
>> syzbot found the following issue on:
>> 
>> HEAD commit:    519d81956ee2 Linux 5.15-rc6
>> git tree:       upstream
>> console output: https://syzkaller.appspot.com/x/log.txt?x=16787178b00000
>> kernel config:  https://syzkaller.appspot.com/x/.config?x=1f7f46d98a0da80e
>> dashboard link: https://syzkaller.appspot.com/bug?
> extid=f2725165900304ec97b6
>> compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils 
> for Debian) 2.35.2
>> 
>> Unfortunately, I don't have any reproducer for this issue yet.
>> 
>> IMPORTANT: if you fix the issue, please add the following tag to the 
> commit:
>> Reported-by: syzbot+f2725165900304ec97b6@...kaller.appspotmail.com
>> 
>> INFO: trying to register non-static key.
>> The code is fine but needs lockdep annotation, or maybe
>> you didn't initialize this object before use?
>> turning off the locking correctness validator.
>
> Let's try the solution attached.
>
> Fabio
>
> #syz test

This crash does not have a reproducer. I cannot test it.

> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master

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