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SubjectRe: WARNING: suspicious RCU usage in xfrm_get_policy
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syzbot has bisected this bug to:

commit f10e0010fae8174dc20bdc872bcaa85baa925cb7
Author: Su Yanjun <suyj.fnst@cn.fujitsu.com>
Date: Thu Mar 7 01:54:08 2019 +0000

net: xfrm: Add '_rcu' tag for rcu protected pointer in netns_xfrm

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10bddbef200000
start commit: 75e6a83b Add linux-next specific files for 20190319
git tree: linux-next
final crash: https://syzkaller.appspot.com/x/report.txt?x=12bddbef200000
console output: https://syzkaller.appspot.com/x/log.txt?x=14bddbef200000
kernel config: https://syzkaller.appspot.com/x/.config?x=84a8ad88e2cbdfd4
dashboard link: https://syzkaller.appspot.com/bug?extid=670c11fba80a72c50a6a
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=129a0aa3200000

Reported-by: syzbot+670c11fba80a72c50a6a@syzkaller.appspotmail.com
Fixes: f10e0010fae8 ("net: xfrm: Add '_rcu' tag for rcu protected pointer
in netns_xfrm")

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

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