linux-kernel - Re: [syzbot] [mm?] WARNING in shmem_evict

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Date:   Fri, 05 May 2023 09:51:18 -0700
From:   syzbot <syzbot+3d4aa0d3e784b29b1520@...kaller.appspotmail.com>
To:     akpm@...ux-foundation.org, hughd@...gle.com, jiaqiyan@...gle.com,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        shy828301@...il.com, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [mm?] WARNING in shmem_evict_inode

syzbot has bisected this issue to:

commit 12904d953364e3bd21789a45137bf90df7cc78ee
Author: Jiaqi Yan <jiaqiyan@...gle.com>
Date:   Wed Mar 29 15:11:21 2023 +0000

    mm/khugepaged: recover from poisoned file-backed memory

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14f67032280000
start commit:   3c4aa4434377 Merge tag 'ceph-for-6.4-rc1' of https://githu..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=16f67032280000
console output: https://syzkaller.appspot.com/x/log.txt?x=12f67032280000
kernel config:  https://syzkaller.appspot.com/x/.config?x=c1d541e02d3faec
dashboard link: https://syzkaller.appspot.com/bug?extid=3d4aa0d3e784b29b1520
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14d1973c280000

Reported-by: syzbot+3d4aa0d3e784b29b1520@...kaller.appspotmail.com
Fixes: 12904d953364 ("mm/khugepaged: recover from poisoned file-backed memory")

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