netdev - Re: WARNING in tracepoint_probe_register

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Date:   Fri, 16 Aug 2019 05:32:00 -0700
From:   syzbot <syzbot+774fddf07b7ab29a1e55@...kaller.appspotmail.com>
To:     antoine.tenart@...tlin.com, ard.biesheuvel@...aro.org,
        baruch@...s.co.il, bigeasy@...utronix.de, davem@...emloft.net,
        gregkh@...uxfoundation.org, gustavo@...eddedor.com,
        jeyu@...nel.org, linux-kernel@...r.kernel.org,
        mathieu.desnoyers@...icios.com, maxime.chevallier@...tlin.com,
        mingo@...nel.org, netdev@...r.kernel.org, paulmck@...ux.ibm.com,
        paulmck@...ux.vnet.ibm.com, rmk+kernel@...linux.org.uk,
        rostedt@...dmis.org, syzkaller-bugs@...glegroups.com,
        tglx@...utronix.de
Subject: Re: WARNING in tracepoint_probe_register_prio (3)

syzbot has bisected this bug to:

commit ecb9f80db23a7ab09b46b298b404e41dd7aff6e6
Author: Thomas Gleixner <tglx@...utronix.de>
Date:   Tue Aug 13 08:00:25 2019 +0000

     net/mvpp2: Replace tasklet with softirq hrtimer

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=13ffb9ee600000
start commit:   ecb9f80d net/mvpp2: Replace tasklet with softirq hrtimer
git tree:       net-next
final crash:    https://syzkaller.appspot.com/x/report.txt?x=100079ee600000
console output: https://syzkaller.appspot.com/x/log.txt?x=17ffb9ee600000
kernel config:  https://syzkaller.appspot.com/x/.config?x=d4cf1ffb87d590d7
dashboard link: https://syzkaller.appspot.com/bug?extid=774fddf07b7ab29a1e55
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11b02a22600000

Reported-by: syzbot+774fddf07b7ab29a1e55@...kaller.appspotmail.com
Fixes: ecb9f80db23a ("net/mvpp2: Replace tasklet with softirq hrtimer")

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