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Date:   Tue, 19 Mar 2019 13:59:00 -0700
From:   syzbot <syzbot+59752237f7ab21c3f3c3@...kaller.appspotmail.com>
To:     davem@...emloft.net, eric.dumazet@...il.com, fw@...len.de,
        herbert@...dor.apana.org.au, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, steffen.klassert@...unet.com,
        suyj.fnst@...fujitsu.com, syzkaller-bugs@...glegroups.com
Subject: Re: WARNING: suspicious RCU usage in xfrm_alloc_userspi

syzbot has bisected this bug to:

commit f10e0010fae8174dc20bdc872bcaa85baa925cb7
Author: Su Yanjun <suyj.fnst@...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=1644ec8b200000
start commit:   f10e0010 net: xfrm: Add '_rcu' tag for rcu protected point..
git tree:       linux-next
final crash:    https://syzkaller.appspot.com/x/report.txt?x=1544ec8b200000
console output: https://syzkaller.appspot.com/x/log.txt?x=1144ec8b200000
kernel config:  https://syzkaller.appspot.com/x/.config?x=59cd5d43b5df6955
dashboard link: https://syzkaller.appspot.com/bug?extid=59752237f7ab21c3f3c3
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14e70cb3200000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17292127200000

Reported-by: syzbot+59752237f7ab21c3f3c3@...kaller.appspotmail.com
Fixes: f10e0010 ("net: xfrm: Add '_rcu' tag for rcu protected pointer in  
netns_xfrm")

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