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

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Date:   Mon, 23 Dec 2019 02:31:01 -0800
From:   syzbot <syzbot+d130c4a0890561cfac5b@...kaller.appspotmail.com>
To:     Rex.Zhu@....com, airlied@...ux.ie, alexander.deucher@....com,
        amd-gfx@...ts.freedesktop.org, b.zolnierkie@...sung.com,
        christian.koenig@....com, daniel.vetter@...ll.ch,
        david1.zhou@....com, dri-devel@...ts.freedesktop.org,
        linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        maarten.lankhorst@...ux.intel.com, rex.zhu@....com,
        sam@...nborg.org, syzkaller-bugs@...glegroups.com
Subject: Re: INFO: task hung in fb_release

syzbot has bisected this bug to:

commit e3933f26b657c341055443103bad331f4537b113
Author: Rex Zhu <Rex.Zhu@....com>
Date:   Tue Jan 16 10:35:15 2018 +0000

     drm/amd/pp: Add edit/commit/show OD clock/voltage support in sysfs

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=12b5a799e00000
start commit:   c6017471 Merge tag 'xfs-5.5-fixes-2' of git://git.kernel.o..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=11b5a799e00000
console output: https://syzkaller.appspot.com/x/log.txt?x=16b5a799e00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=7f6119e2e3675a73
dashboard link: https://syzkaller.appspot.com/bug?extid=d130c4a0890561cfac5b
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=169b1925e00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12b9623ee00000

Reported-by: syzbot+d130c4a0890561cfac5b@...kaller.appspotmail.com
Fixes: e3933f26b657 ("drm/amd/pp: Add edit/commit/show OD clock/voltage  
support in sysfs")

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