linux-kernel - Re: WARNING in wp_page

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Message-ID: <0000000000004162e805a190c456@google.com>
Date:   Mon, 23 Mar 2020 19:47:03 -0700
From:   syzbot <syzbot+9301f2f33873407d5b33@...kaller.appspotmail.com>
To:     akpm@...ux-foundation.org, andriin@...com, ast@...nel.org,
        bjorn.topel@...el.com, bpf@...r.kernel.org,
        catalin.marinas@....com, daniel@...earbox.net, davem@...emloft.net,
        hawk@...nel.org, jakub.kicinski@...ronome.com, jmoyer@...hat.com,
        john.fastabend@...il.com, jonathan.lemon@...il.com,
        justin.he@....com, kafai@...com, kirill.shutemov@...ux.intel.com,
        kirill@...temov.name, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, magnus.karlsson@...il.com,
        magnus.karlsson@...el.com, netdev@...r.kernel.org,
        songliubraving@...com, syzkaller-bugs@...glegroups.com,
        torvalds@...ux-foundation.org, yhs@...com
Subject: Re: WARNING in wp_page_copy

syzbot suspects this bug was fixed by commit:

commit c3e5ea6ee574ae5e845a40ac8198de1fb63bb3ab
Author: Kirill A. Shutemov <kirill@...temov.name>
Date:   Fri Mar 6 06:28:32 2020 +0000

    mm: avoid data corruption on CoW fault into PFN-mapped VMA

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1170c813e00000
start commit:   e31736d9 Merge tag 'nios2-v5.5-rc2' of git://git.kernel.or..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=79f79de2a27d3e3d
dashboard link: https://syzkaller.appspot.com/bug?extid=9301f2f33873407d5b33
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=10fd9fb1e00000

If the result looks correct, please mark the bug fixed by replying with:

#syz fix: mm: avoid data corruption on CoW fault into PFN-mapped VMA

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