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SubjectRe: WARNING: suspicious RCU usage in ovs_flow_tbl_masks_cache_size
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syzbot has bisected this issue to:

commit 9bf24f594c6acf676fb8c229f152c21bfb915ddb
Author: Eelco Chaudron <echaudro@redhat.com>
Date: Fri Jul 31 12:21:34 2020 +0000

net: openvswitch: make masks cache size configurable

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=110e06dc900000
start commit: 2f631133 net: Pass NULL to skb_network_protocol() when we ..
git tree: net-next
final oops: https://syzkaller.appspot.com/x/report.txt?x=130e06dc900000
console output: https://syzkaller.appspot.com/x/log.txt?x=150e06dc900000
kernel config: https://syzkaller.appspot.com/x/.config?x=91a13b78c7dc258d
dashboard link: https://syzkaller.appspot.com/bug?extid=f612c02823acb02ff9bc
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10e8430a900000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=123549fc900000

Reported-by: syzbot+f612c02823acb02ff9bc@syzkaller.appspotmail.com
Fixes: 9bf24f594c6a ("net: openvswitch: make masks cache size configurable")

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

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