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SubjectRe: WARNING: bad unlock balance in sch_direct_xmit
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syzbot has bisected this bug to:

commit ab92d68fc22f9afab480153bd82a20f6e2533769
Author: Taehee Yoo <ap420073@gmail.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@syzkaller.appspotmail.com
Fixes: ab92d68fc22f ("net: core: add generic lockdep keys")

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

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