linux-kernel - Re: INFO: task hung in process

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Message-ID: <000000000000f8654a0584bd7d5d@google.com>
Date:   Fri, 22 Mar 2019 23:58:00 -0700
From:   syzbot <syzbot+cdc562bc26a2b2b0a94f@...kaller.appspotmail.com>
To:     airlied@...ux.ie, dmitry.kasatkin@...il.com,
        dri-devel@...ts.freedesktop.org, james.l.morris@...cle.com,
        jmorris@...ei.org, jsarha@...com,
        linux-ima-devel@...ts.sourceforge.net,
        linux-ima-user@...ts.sourceforge.net,
        linux-integrity@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-security-module@...r.kernel.org, serge@...lyn.com,
        syzkaller-bugs@...glegroups.com, tomi.valkeinen@...com,
        zohar@...ux.vnet.ibm.com
Subject: Re: INFO: task hung in process_measurement

syzbot has bisected this bug to:

commit 8fe5616b20e5742bb5fee0e77dffe2fc76ac92a0
Author: Jyri Sarha <jsarha@...com>
Date:   Tue Jun 14 08:43:30 2016 +0000

     drm/tilcdc: Restore old dpms state in pm_resume()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=10daff1b200000
start commit:   291d0e5d Merge tag 'for-linus-20180929' of git://git.kerne..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=12daff1b200000
console output: https://syzkaller.appspot.com/x/log.txt?x=14daff1b200000
kernel config:  https://syzkaller.appspot.com/x/.config?x=a8212f992609a887
dashboard link: https://syzkaller.appspot.com/bug?extid=cdc562bc26a2b2b0a94f
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=140e285e400000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1237fe81400000

Reported-by: syzbot+cdc562bc26a2b2b0a94f@...kaller.appspotmail.com
Fixes: 8fe5616b20e5 ("drm/tilcdc: Restore old dpms state in pm_resume()")

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