linux-kernel - Re: WARNING in enqueue_task

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Message-ID: <000000000000fdcb1d058489a91b@google.com>
Date:   Wed, 20 Mar 2019 10:08:00 -0700
From:   syzbot <syzbot+119ba87189432ead09b4@...kaller.appspotmail.com>
To:     bp@...en8.de, bristot@...hat.com, dvhart@...radead.org,
        dvyukov@...gle.com, hpa@...or.com, juri.lelli@...hat.com,
        linux-kernel@...r.kernel.org, luca.abeni@...tannapisa.it,
        luto@...nel.org, mingo@...nel.org, mingo@...hat.com,
        peterz@...radead.org, syzkaller-bugs@...glegroups.com,
        tglx@...utronix.de, torvalds@...ux-foundation.org, x86@...nel.org
Subject: Re: WARNING in enqueue_task_dl

syzbot has bisected this bug to:

commit 7c80cfc99b7bfdc92cee26f8008859f326f4a37f
Author: Peter Zijlstra <peterz@...radead.org>
Date:   Sat May 6 14:03:17 2017 +0000

     sched/fair: Clean up calc_cfs_shares()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=169d614d200000
start commit:   7c80cfc9 sched/fair: Clean up calc_cfs_shares()
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=159d614d200000
console output: https://syzkaller.appspot.com/x/log.txt?x=119d614d200000
kernel config:  https://syzkaller.appspot.com/x/.config?x=76d28549be7c27cf
dashboard link: https://syzkaller.appspot.com/bug?extid=119ba87189432ead09b4
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=10eb7ebf400000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=14156d77400000

Reported-by: syzbot+119ba87189432ead09b4@...kaller.appspotmail.com
Fixes: 7c80cfc9 ("sched/fair: Clean up calc_cfs_shares()")