linux-kernel - Re: WARNING in md

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Date:   Mon, 25 Nov 2019 14:37:01 -0800
From:   syzbot <syzbot+1e46a0864c1a6e9bd3d8@...kaller.appspotmail.com>
To:     airlied@...ux.ie, chris@...is-wilson.co.uk,
        dri-devel@...ts.freedesktop.org, intel-gfx@...ts.freedesktop.org,
        jani.nikula@...ux.intel.com, joonas.lahtinen@...ux.intel.com,
        linux-kernel@...r.kernel.org, linux-raid@...r.kernel.org,
        rafael.antognolli@...el.com, rodrigo.vivi@...el.com,
        shli@...nel.org, syzkaller-bugs@...glegroups.com
Subject: Re: WARNING in md_ioctl

syzbot has bisected this bug to:

commit 4b6ce6810a5dc0af387a238e8c852e0d3822381f
Author: Rafael Antognolli <rafael.antognolli@...el.com>
Date:   Mon Feb 5 23:33:30 2018 +0000

     drm/i915/cnl: WaPipeControlBefore3DStateSamplePattern

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=13aeb522e00000
start commit:   c61a56ab Merge branch 'x86-urgent-for-linus' of git://git...
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=106eb522e00000
console output: https://syzkaller.appspot.com/x/log.txt?x=17aeb522e00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=4013180e7c7a9ff9
dashboard link: https://syzkaller.appspot.com/bug?extid=1e46a0864c1a6e9bd3d8
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16bca207800000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=14819a47800000

Reported-by: syzbot+1e46a0864c1a6e9bd3d8@...kaller.appspotmail.com
Fixes: 4b6ce6810a5d ("drm/i915/cnl:  
WaPipeControlBefore3DStateSamplePattern")

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