From: Baoquan He <bhe@redhat.com>
To: kkabe@vega.pgw.jp, bugzilla-daemon@bugzilla.kernel.org,
Andrew Morton <akpm@linux-foundation.org>
Cc: Wei Yang <richardw.yang@linux.intel.com>,
David Hildenbrand <david@redhat.com>,
Michal Hocko <mhocko@kernel.org>,
Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
linux-mm@kvack.org
Subject: Re: [Bug 206401] kernel panic on Hyper-V after 5 minutes due to memory hot-add
Date: Wed, 12 Feb 2020 15:31:23 +0800 [thread overview]
Message-ID: <20200212073123.GG8965@MiWiFi-R3L-srv> (raw)
In-Reply-To: <20200211164131.a594d2efc45b4e8744c98421@linux-foundation.org>
On 02/11/20 at 04:41pm, Andrew Morton wrote:
> On Tue, 11 Feb 2020 07:07:41 +0800 Wei Yang <richardw.yang@linux.intel.com> wrote:
>
> > On Mon, Feb 10, 2020 at 02:15:51PM +0800, Baoquan He wrote:
> > >On 02/10/20 at 02:09pm, Baoquan He wrote:
> > >> On 02/09/20 at 09:56pm, Andrew Morton wrote:
> > >> > On Mon, 10 Feb 2020 13:40:27 +0800 Baoquan He <bhe@redhat.com> wrote:
> > >> >
> > >> > > Hi Andrew,
> > >> > >
> > >> > > On 02/09/20 at 09:32pm, Andrew Morton wrote:
> > >> > > > On Tue, 04 Feb 2020 11:25:48 +0000 bugzilla-daemon@bugzilla.kernel.org wrote:
> > >> > > >
> > >> > > > > https://bugzilla.kernel.org/show_bug.cgi?id=206401
> > >> > > > >
> > >> > > >
> > >> > > > An oops during mem hotadd. Could someone please take a look when
> > >> > > > convenient?
> > >> > >
> > >> > > This has been addressed by Wei Yang's patch, please check it here:
> > >> > >
> > >> > > http://lkml.kernel.org/r/20200209104826.3385-7-bhe@redhat.com
> > >> > >
> > >> >
> > >> > hm, OK, thanks. It's unfortunate that a 5.5 fix is buried in a
> > >> > six-patch series which is still in progress! Can we please merge that
> > >> > as a standalone fix with a cc:stable, Fixes:, etc?
> > >
> > >Maybe can add Fixes tag as follow when merge:
> > >
> > >Fixes: ba72b4c8cf60 ("mm/sparsemem: support sub-section hotplug")
> > >
>
> The reporter (cc'ed here) is still seeing issues:
> https://bugzilla.kernel.org/show_bug.cgi?id=206401
>
> Could we please continue this investigation via emailed reply-to-all,
> rather than via the bugzilla interface?
Yes, people prefer mailing list to discuss issues.
Hi T.Kabe,
Could you provide the call trace again after below patch is applied?
The comment #9 in bugzilla is not very clear to me.
mm/sparsemem: pfn_to_page is not valid yet on SPARSEMEM
http://lkml.kernel.org/r/20200209104826.3385-7-bhe@redhat.com
And, as you said, applying above patch, and do not call
__free_pages_core() in generic_online_page() will work. I doubt it,
because without __free_pages_core(), your added pages are not added
into buddy for managing. I think we should make clear this problem
firstly, in order not to introduce new problem by improper work around,
then check next.
Thanks
Baoquan
next prev parent reply other threads:[~2020-02-12 7:31 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bug-206401-27@https.bugzilla.kernel.org/>
[not found] ` <bug-206401-27-zYD8WfDKqD@https.bugzilla.kernel.org/>
2020-02-10 5:32 ` [Bug 206401] kernel panic on Hyper-V after 5 minutes due to memory hot-add Andrew Morton
2020-02-10 5:40 ` Baoquan He
2020-02-10 5:56 ` Andrew Morton
2020-02-10 6:09 ` Baoquan He
2020-02-10 6:15 ` Baoquan He
2020-02-10 23:07 ` Wei Yang
2020-02-12 0:41 ` Andrew Morton
2020-02-12 7:31 ` Baoquan He [this message]
2020-02-12 8:21 ` David Hildenbrand
2020-02-13 4:22 ` [Bug 206401] kernel panic on Hyper-V after 5 minutes due tomemory hot-add kabe
2020-02-13 8:19 ` Baoquan He
2020-02-14 14:26 ` [Bug 206401] kernel panic on Hyper-V after 5 minutes duetomemory hot-add kkabe
2020-02-14 14:48 ` Baoquan He
2020-02-14 15:01 ` Baoquan He
2020-02-17 4:48 ` Baoquan He
2020-02-17 5:31 ` [Bug 206401] kernel panic on Hyper-V after 5 minutes duetomemoryhot-add kkabe
2020-02-17 8:00 ` David Hildenbrand
2020-02-17 10:33 ` [Bug 206401] kernel panic on Hyper-V after 5 minutes duetomemory hot-add Michal Hocko
2020-02-17 11:21 ` [Bug 206401] kernel panic on Hyper-V after 5 minutes due to memory hot-add kkabe
2020-02-17 5:46 ` kkabe
2020-02-17 7:44 ` Baoquan He
2020-02-17 9:34 ` Oscar Salvador
2020-02-17 10:13 ` Baoquan He
2020-02-17 10:17 ` Baoquan He
2020-02-17 10:24 ` David Hildenbrand
2020-02-17 10:33 ` Baoquan He
2020-02-17 10:38 ` David Hildenbrand
2020-02-17 11:20 ` Baoquan He
2020-02-17 12:47 ` Michal Hocko
2020-02-18 6:24 ` kkabe
2020-02-18 8:47 ` Michal Hocko
2020-02-18 9:19 ` kkabe
2020-02-18 9:26 ` David Hildenbrand
2020-02-18 10:05 ` [RFC PATCH] memory_hotplug: disable the functionality for 32b (was: Re: [Bug 206401] kernel panic on Hyper-V after 5 minutes due to) " Michal Hocko
2020-02-18 10:11 ` David Hildenbrand
2020-02-19 3:23 ` Baoquan He
2020-02-19 21:46 ` Andrew Morton
2020-02-19 21:46 ` Andrew Morton
2020-02-19 23:07 ` [RFC PATCH] memory_hotplug: disable the functionality for 32b Robin Murphy
2020-02-19 23:07 ` Robin Murphy
2020-02-19 3:39 ` [Bug 206401] kernel panic on Hyper-V after 5 minutes due to memory hot-add Baoquan He
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