linux-kernel - Re: WARNING in untrack

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Date:   Fri, 12 Apr 2019 04:42:01 -0700
From:   syzbot <syzbot+e1a4f80c370d2381e49f@...kaller.appspotmail.com>
To:     Julia.Lawall@...6.fr, bp@...en8.de, dan.j.williams@...el.com,
        dave.hansen@...ux.intel.com, dave.jiang@...el.com,
        haozhong.zhang@...el.com, hpa@...or.com,
        jacek.anaszewski@...il.com, julia.lawall@...6.fr,
        linux-kernel@...r.kernel.org, linux-leds@...r.kernel.org,
        luto@...nel.org, mingo@...hat.com, pavel@....cz,
        pbonzini@...hat.com, peterz@...radead.org, rkrcmar@...hat.com,
        rpurdie@...ys.net, syzkaller-bugs@...glegroups.com,
        tglx@...utronix.de, x86@...nel.org
Subject: Re: WARNING in untrack_pfn

syzbot has bisected this bug to:

commit c68729119f4d2993bec3c9cb999ad76de5aeddba
Author: Julia Lawall <Julia.Lawall@...6.fr>
Date:   Sat Jul 15 09:58:19 2017 +0000

     leds: tlc591xx: add missing of_node_put

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=12cda0f3200000
start commit:   23203e3f Merge branch 'akpm' (patches from Andrew)
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=11cda0f3200000
console output: https://syzkaller.appspot.com/x/log.txt?x=16cda0f3200000
kernel config:  https://syzkaller.appspot.com/x/.config?x=861a3573f4e78ba1
dashboard link: https://syzkaller.appspot.com/bug?extid=e1a4f80c370d2381e49f
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17836d15400000

Reported-by: syzbot+e1a4f80c370d2381e49f@...kaller.appspotmail.com
Fixes: c68729119f4d ("leds: tlc591xx: add missing of_node_put")

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