linux-kernel - Re: WARNING in carl9170_usb_submit_cmd_urb/usb_submit

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Date:   Thu, 04 Mar 2021 06:29:06 -0800
From:   syzbot <syzbot+9468df99cb63a4a4c4e1@...kaller.appspotmail.com>
To:     andreyknvl@...gle.com, brookebasile@...il.com,
        chunkeey@...glemail.com, davem@...emloft.net,
        gregkh@...uxfoundation.org, ingrassia@...genesys.com, jack@...e.cz,
        kuba@...nel.org, kvalo@...eaurora.org,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        syzkaller-bugs@...glegroups.com, tytso@....edu, yi.zhang@...wei.com
Subject: Re: WARNING in carl9170_usb_submit_cmd_urb/usb_submit_urb

syzbot has bisected this issue to:

commit 6a66a7ded12baa6ebbb2e3e82f8cb91382814839
Author: zhangyi (F) <yi.zhang@...wei.com>
Date:   Thu Feb 13 06:38:20 2020 +0000

    jbd2: move the clearing of b_modified flag to the journal_unmap_buffer()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14bd498ed00000
start commit:   f69d02e3 Merge tag 'misc-5.12-2021-03-02' of git://git.ker..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=16bd498ed00000
console output: https://syzkaller.appspot.com/x/log.txt?x=12bd498ed00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=e0da2d01cc636e2c
dashboard link: https://syzkaller.appspot.com/bug?extid=9468df99cb63a4a4c4e1
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11770346d00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17be69ccd00000

Reported-by: syzbot+9468df99cb63a4a4c4e1@...kaller.appspotmail.com
Fixes: 6a66a7ded12b ("jbd2: move the clearing of b_modified flag to the journal_unmap_buffer()")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection