linux-kernel - Re: BUG: Bad rss-counter state (3)

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Date:   Sun, 08 Dec 2019 17:38:00 -0800
From:   syzbot <syzbot+f2a1633f249cece865fe@...kaller.appspotmail.com>
To:     akpm@...ux-foundation.org, dvyukov@...gle.com, hughd@...gle.com,
        jglisse@...hat.com, khlebnikov@...dex-team.ru,
        kirill.shutemov@...ux.intel.com, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, mhocko@...e.com,
        syzkaller-bugs@...glegroups.com, torvalds@...ux-foundation.org,
        willy@...radead.org
Subject: Re: BUG: Bad rss-counter state (3)

syzbot suspects this bug was fixed by commit:

commit 173d9d9fd3ddae84c110fea8aedf1f26af6be9ec
Author: Hugh Dickins <hughd@...gle.com>
Date:   Fri Nov 30 22:10:16 2018 +0000

     mm/huge_memory: splitting set mapping+index before unfreeze

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14202b7ae00000
start commit:   a27fc142 Merge branch 'parisc-4.17-3' of git://git.kernel...
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=adeb81fdb5db9d72
dashboard link: https://syzkaller.appspot.com/bug?extid=f2a1633f249cece865fe
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1257325b800000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=163bb567800000

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

#syz fix: mm/huge_memory: splitting set mapping+index before unfreeze

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