linux-kernel - Re: [syzbot] WARNING in atp

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Date:   Thu, 30 Dec 2021 16:12:58 +0300
From:   Pavel Skripkin <paskripkin@...il.com>
To:     syzbot <syzbot+b88c5eae27386b252bbd@...kaller.appspotmail.com>,
        dmitry.torokhov@...il.com, linux-input@...r.kernel.org,
        linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] WARNING in atp_close (3)

On 10/3/21 03:00, syzbot wrote:
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    bf5b1e621a51 Add linux-next specific files for 20210927
> git tree:       linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=11cc5bd3300000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=4b58fe22c337ee4a
> dashboard link: https://syzkaller.appspot.com/bug?extid=b88c5eae27386b252bbd
> 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+b88c5eae27386b252bbd@...kaller.appspotmail.com
> 

dev->work should be initialized before input_register_device(), since 
input_dev->close() calls cancel_work_sync()

#syz test
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master




With regards,
Pavel Skripkin
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