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SubjectRe: general protection fault in kvm_pv_send_ipi
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syzbot has bisected this bug to:

commit 653cd284a8a857ddfcf24f5bc3bd204a229f6c9f
Author: Vlad Buslov <vladbu@mellanox.com>
Date: Tue Aug 14 18:46:16 2018 +0000

net: sched: always disable bh when taking tcf_lock

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16e25dbb200000
start commit: 05193597 Merge branch 'for-4.19' of git://git.kernel.org/p..
git tree: upstream
final crash: https://syzkaller.appspot.com/x/report.txt?x=15e25dbb200000
console output: https://syzkaller.appspot.com/x/log.txt?x=11e25dbb200000
kernel config: https://syzkaller.appspot.com/x/.config?x=3b576e333ca31bb2
dashboard link: https://syzkaller.appspot.com/bug?extid=86c0a866f80d88349f1f
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=137d861e400000

Reported-by: syzbot+86c0a866f80d88349f1f@syzkaller.appspotmail.com
Fixes: 653cd284a8a8 ("net: sched: always disable bh when taking tcf_lock")

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

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