netdev - Re: WARNING: bad unlock balance in sch_direct

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Date:   Sun, 05 Jan 2020 14:58:00 -0800
From:   syzbot <syzbot+4ec99438ed7450da6272@...kaller.appspotmail.com>
To:     a@...table.cc, alex.aring@...il.com, allison@...utok.net,
        andrew@...n.ch, andy@...yhouse.net, ap420073@...il.com,
        ast@...dv.de, b.a.t.m.a.n@...ts.open-mesh.org,
        bridge@...ts.linux-foundation.org, cleech@...hat.com,
        daniel@...earbox.net, davem@...emloft.net, dsa@...ulusnetworks.com,
        f.fainelli@...il.com, fw@...len.de, gregkh@...uxfoundation.org,
        gustavo@...eddedor.com, haiyangz@...rosoft.com, info@...ux.net,
        j.vosburgh@...il.com, j@...fi, jakub.kicinski@...ronome.com,
        jhs@...atatu.com, jiri@...nulli.us, johan.hedberg@...il.com,
        johannes.berg@...el.com, jwi@...ux.ibm.com,
        kstewart@...uxfoundation.org, kvalo@...eaurora.org,
        kys@...rosoft.com, linmiaohe@...wei.com,
        linux-bluetooth@...r.kernel.org, linux-hams@...r.kernel.org,
        linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-ppp@...r.kernel.org, linux-wireless@...r.kernel.org,
        linux-wpan@...r.kernel.org, liuhangbin@...il.com,
        marcel@...tmann.org, mareklindner@...mailbox.ch, mkubecek@...e.cz,
        mmanning@...tta.att-mail.com, netdev@...r.kernel.org,
        nikolay@...ulusnetworks.com, oss-drivers@...ronome.com,
        paulus@...ba.org, ralf@...ux-mips.org, roopa@...ulusnetworks.com,
        sashal@...nel.org
Subject: Re: WARNING: bad unlock balance in sch_direct_xmit

syzbot has bisected this bug to:

commit ab92d68fc22f9afab480153bd82a20f6e2533769
Author: Taehee Yoo <ap420073@...il.com>
Date:   Mon Oct 21 18:47:51 2019 +0000

     net: core: add generic lockdep keys

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=15e88ec6e00000
start commit:   36487907 Merge branch 'akpm' (patches from Andrew)
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=17e88ec6e00000
console output: https://syzkaller.appspot.com/x/log.txt?x=13e88ec6e00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=f2f3ef188b7e16cf
dashboard link: https://syzkaller.appspot.com/bug?extid=4ec99438ed7450da6272
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1722c5c1e00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=167aee3ee00000

Reported-by: syzbot+4ec99438ed7450da6272@...kaller.appspotmail.com
Fixes: ab92d68fc22f ("net: core: add generic lockdep keys")

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