From: Michal Hocko <mhocko@kernel.org>
To: MegaBrutal <megabrutal@gmail.com>
Cc: Stable tree <stable@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Hillf Danton <hillf.zj@alibaba-inc.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Mel Gorman <mgorman@suse.de>, Minchan Kim <minchan@kernel.org>,
Trevor Cordes <trevor@tecnopolis.ca>
Subject: Re: [PATCH stable-4.9 2/2] mm, vmscan: consider eligible zones in get_scan_count
Date: Tue, 7 Mar 2017 15:14:17 +0100 [thread overview]
Message-ID: <20170307141417.GK28642@dhcp22.suse.cz> (raw)
In-Reply-To: <CAE8gLhkH4W6ZvMMCe7s-nTdGQBHg1HOj_jsfZWHimH6ZXzGWQA@mail.gmail.com>
On Mon 06-03-17 19:00:00, MegaBrutal wrote:
> Hi Michal,
>
> I'm over a very long kernel bisection, and if I made no mistake in
> testing commits, this patch fixes a kernel bug which affects my HP
> Compaq dc5800 machine with 32 bit Ubuntu OS.
>
> The bug manifests itself with "NMI watchdog: BUG: soft lockup - CPU#0
> stuck for 23s! [kswapd0:38]" messages in 4.8 kernels, and "page
> allocation stalls for 47608ms, order:1,
> mode:0x17000c0(GFP_KERNEL_ACCOUNT|__GFP_NOTRACK)" in 4.10 kernels up
> to this commit.
This is really hard to say without seeing the traces.
> Michal, can you confirm that this patch may fix issues like the ones I
> encountered? If so, I'll try to get the Ubuntu kernel staff to
> backport this commit to Yakkety's 4.8 kernel. On the other hand, I
> can't seem to be able to backport this commit to 4.8 with "git
> cherry-pick", so maybe I need to wait for your tweaks you mentioned.
The backport from 4.9 to 4.8 shouldn't be very complicated I believe.
> Anyway, thank you very much for the fix!
Good to hear the patch helped you though.
--
Michal Hocko
SUSE Labs
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next prev parent reply other threads:[~2017-03-07 14:14 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-28 15:11 [PATCH stable-4.9 0/2] mm: follow up oom fixes for 32b Michal Hocko
2017-02-28 15:11 ` [PATCH stable-4.9 1/2] mm, vmscan: cleanup lru size claculations Michal Hocko
2017-02-28 15:11 ` [PATCH stable-4.9 2/2] mm, vmscan: consider eligible zones in get_scan_count Michal Hocko
2017-03-06 18:00 ` MegaBrutal
2017-03-07 14:14 ` Michal Hocko [this message]
2017-03-08 12:51 ` [PATCH stable-4.9 0/2] mm: follow up oom fixes for 32b Greg KH
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