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

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Message-ID: <000000000000d0cac6059e089f5a@google.com>
Date:   Fri, 07 Feb 2020 20:06:01 -0800
From:   syzbot <syzbot+ba431dd9afc3a918981a@...kaller.appspotmail.com>
To:     airlied@...ux.ie, andriin@...com, ast@...nel.org,
        aviadye@...lanox.com, borisp@...lanox.com, bpf@...r.kernel.org,
        chris@...is-wilson.co.uk, daniel@...earbox.net, davejwatson@...com,
        davem@...emloft.net, dri-devel@...ts.freedesktop.org,
        ilyal@...lanox.com, intel-gfx@...ts.freedesktop.org,
        jani.nikula@...ux.intel.com, john.fastabend@...il.com,
        joonas.lahtinen@...ux.intel.com, kafai@...com, kuba@...nel.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        rodrigo.vivi@...el.com, songliubraving@...com,
        syzkaller-bugs@...glegroups.com, tvrtko.ursulin@...el.com,
        yhs@...com
Subject: Re: INFO: task hung in tls_sw_cancel_work_tx

syzbot has bisected this bug to:

commit f75f91574617a3c6fbc821c6b156f5777a59d0ed
Author: Chris Wilson <chris@...is-wilson.co.uk>
Date:   Tue May 15 14:31:49 2018 +0000

    drm/i915: Shrink search list for active timelines

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=121dc6b5e00000
start commit:   90568ecf Merge tag 'kvm-5.6-2' of git://git.kernel.org/pub..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=111dc6b5e00000
console output: https://syzkaller.appspot.com/x/log.txt?x=161dc6b5e00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=69fa012479f9a62
dashboard link: https://syzkaller.appspot.com/bug?extid=ba431dd9afc3a918981a
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1036b6b5e00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1651f6e9e00000

Reported-by: syzbot+ba431dd9afc3a918981a@...kaller.appspotmail.com
Fixes: f75f91574617 ("drm/i915: Shrink search list for active timelines")

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