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Message-ID: <alpine.DEB.2.20.1904121520350.22857@hadrien> Date: Fri, 12 Apr 2019 15:21:42 +0200 (CEST) From: Julia Lawall <julia.lawall@...6.fr> To: Pavel Machek <pavel@....cz> cc: syzbot <syzbot+e1a4f80c370d2381e49f@...kaller.appspotmail.com>, 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, linux-kernel@...r.kernel.org, linux-leds@...r.kernel.org, luto@...nel.org, mingo@...hat.com, 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 On Fri, 12 Apr 2019, Pavel Machek wrote: > On Fri 2019-04-12 04:42:01, syzbot wrote: > > 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 > > Can you revert c68729119f4d2993bec3c9cb999ad76de5aeddba on master and > see if it fixes the problem? Because this is hard to believe... Likewise, it seems hard to believe that the change is a problem. But could the problem be elsewhere and triggered by this code? julia > > Pavel > > -- > (english) http://www.livejournal.com/~pavelmachek > (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html >
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