linux-kernel - Re: [syzbot] kernel BUG in __tlb_remove_page

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Message-ID: <000000000000b206e205f3f00b4c@google.com>
Date:   Sun, 05 Feb 2023 00:53:17 -0800
From:   syzbot <syzbot+d87dd8e018fd2cc2528b@...kaller.appspotmail.com>
To:     hdanton@...a.com, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] kernel BUG in __tlb_remove_page_size (2)

Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
BUG: Bad rss-counter state

BUG: Bad rss-counter state mm:ffff88802bf00900 type:MM_SHMEMPAGES val:1
BUG: non-zero pgtables_bytes on freeing mm: 8192


Tested on:

commit:         4fafd969 Add linux-next specific files for 20230203
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
console output: https://syzkaller.appspot.com/x/log.txt?x=1413c073480000
kernel config:  https://syzkaller.appspot.com/x/.config?x=1d2fba7d42502ca4
dashboard link: https://syzkaller.appspot.com/bug?extid=d87dd8e018fd2cc2528b
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
patch:          https://syzkaller.appspot.com/x/patch.diff?x=15a4779d480000