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Date:   Sun, 31 Mar 2019 18:36:01 -0700
From:   syzbot <syzbot+120abb1c3f7bfdc523f7@...kaller.appspotmail.com>
To:     aarcange@...hat.com, akpm@...ux-foundation.org,
        dave.hansen@...ux.intel.com, dvyukov@...gle.com, dwmw@...zon.co.uk,
        jglisse@...hat.com, kirill.shutemov@...ux.intel.com,
        kirill@...temov.name, ldufour@...ux.vnet.ibm.com,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linux@...inikbrodowski.net, mhocko@...e.com, minchan@...nel.org,
        oleg@...hat.com, rientjes@...gle.com, ross.zwisler@...ux.intel.com,
        sfr@...b.auug.org.au, syzkaller-bugs@...glegroups.com,
        ying.huang@...el.com
Subject: Re: general protection fault in _vm_normal_page

syzbot has bisected this bug to:

commit 4a110365f1da9d5cabbd0a01796027c0a6d5e80b
Author: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
Date:   Wed Jul 11 00:45:42 2018 +0000

     mm: drop unneeded ->vm_ops checks

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=10b0650f200000
start commit:   98be4506 Add linux-next specific files for 20180711
git tree:       linux-next
final crash:    https://syzkaller.appspot.com/x/report.txt?x=12b0650f200000
console output: https://syzkaller.appspot.com/x/log.txt?x=14b0650f200000
kernel config:  https://syzkaller.appspot.com/x/.config?x=3f3b3673fec35d01
dashboard link: https://syzkaller.appspot.com/bug?extid=120abb1c3f7bfdc523f7
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12a46568400000

Reported-by: syzbot+120abb1c3f7bfdc523f7@...kaller.appspotmail.com
Fixes: 4a110365f1da ("mm: drop unneeded ->vm_ops checks")

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

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