linux-kernel - Re: [PATCH -v2 0/9] migrate

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Message-ID: <87a62oy5o9.fsf@yhuang6-desk2.ccr.corp.intel.com>
Date:   Thu, 12 Jan 2023 08:09:42 +0800
From:   "Huang, Ying" <ying.huang@...el.com>
To:     Mike Kravetz <mike.kravetz@...cle.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Zi Yan <ziy@...dia.com>,
        Yang Shi <shy828301@...il.com>,
        Baolin Wang <baolin.wang@...ux.alibaba.com>,
        Oscar Salvador <osalvador@...e.de>,
        Matthew Wilcox <willy@...radead.org>,
        Bharata B Rao <bharata@....com>,
        Alistair Popple <apopple@...dia.com>,
        haoxin <xhao@...ux.alibaba.com>
Subject: Re: [PATCH -v2 0/9] migrate_pages(): batch TLB flushing

Hi, Mike,

Mike Kravetz <mike.kravetz@...cle.com> writes:

> On 01/10/23 17:53, Mike Kravetz wrote:
>> Just saw the following easily reproducible issue on next-20230110.  Have not
>> verified it is related to/caused by this series, but it looks suspicious.
>
> Verified this is caused by the series,
>
> 734cbddcfe72 migrate_pages: organize stats with struct migrate_pages_stats
> to
> 323b933ba062 migrate_pages: batch flushing TLB
>
> in linux-next.

Thanks for reporting.

I tried this yesterday (next-20230111), but failed to reproduce it.  Can
you share your kernel config?  Is there any other setup needed?

BTW: can you bisect to one specific commit which causes the bug in the
series?

Best Regards,
Huang, Ying