linux-kernel - Re: [PATCH 2/3] mm: page table check

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Message-ID: <CA+CK2bDiWc2y=CW6d=6raaf9Haq2vuWQDTQZ-aAyLDdpq5aQPQ@mail.gmail.com>
Date:   Sun, 28 Nov 2021 11:57:10 -0500
From:   Pasha Tatashin <pasha.tatashin@...een.com>
To:     Fusion Future <qydwhotmail@...il.com>
Cc:     LKML <linux-kernel@...r.kernel.org>, linux-mm <linux-mm@...ck.org>,
        Linux Doc Mailing List <linux-doc@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        David Rientjes <rientjes@...gle.com>,
        Paul Turner <pjt@...gle.com>, weixugc@...gle.com,
        Greg Thelen <gthelen@...gle.com>,
        Ingo Molnar <mingo@...hat.com>,
        Jonathan Corbet <corbet@....net>,
        Will Deacon <will@...nel.org>, Mike Rapoport <rppt@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>, masahiroy@...nel.org,
        Sami Tolvanen <samitolvanen@...gle.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "maintainer:X86 ARCHITECTURE" <x86@...nel.org>,
        frederic@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>
Subject: Re: [PATCH 2/3] mm: page table check

On Sun, Nov 28, 2021 at 11:54 AM Fusion Future <qydwhotmail@...il.com> wrote:
>
> > So it could be when memory consumption is over a certain percent, the bug will be triggered.
>
> Bisected and at the commit "[04ce8955fbe4d84376b92b875c42942489fcf3c5]
> mm: page table check", the system still doesn't encounter any freezes.
> So it's not this commit that introduces the bug. Sorry for bothering.

This commit by itself would not cause the freeze or BUG_ON(), but the
next commit which enables it on x86 arch might.

Pasha