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Re: [PATCH] memory-hotplug: Fix bad area access on dissolve_free_huge_pages()

From Dave Hansen <dave.hansen@linux.intel.com>
Newsgroups linux.kernel
Subject Re: [PATCH] memory-hotplug: Fix bad area access on dissolve_free_huge_pages()
Date 2016-09-14 18:40 +0200
Message-ID <shlo5-3d7-17@gated-at.bofh.it> (permalink)
References <sgRq1-7PG-13@gated-at.bofh.it> <sgZQC-4ZB-39@gated-at.bofh.it> <shlo5-3d7-19@gated-at.bofh.it>
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On 09/14/2016 09:33 AM, Rui Teng wrote:
> 
> How about return the size of page freed from dissolve_free_huge_page(),
> and jump such step on pfn?

That would be a nice improvement.

But, as far as describing the initial problem, can you explain how the
tail pages still ended up being PageHuge()?  Seems like dissolving the
huge page should have cleared that.

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Thread

[PATCH] memory-hotplug: Fix bad area access on dissolve_free_huge_pages() Rui Teng <rui.teng@linux.vnet.ibm.com> - 2016-09-13 10:40 +0200
  Re: [PATCH] memory-hotplug: Fix bad area access on  dissolve_free_huge_pages() Dave Hansen <dave.hansen@linux.intel.com> - 2016-09-13 19:40 +0200
    Re: [PATCH] memory-hotplug: Fix bad area access on  dissolve_free_huge_pages() Dave Hansen <dave.hansen@linux.intel.com> - 2016-09-14 18:40 +0200
      Re: [PATCH] memory-hotplug: Fix bad area access on  dissolve_free_huge_pages() Rui Teng <rui.teng@linux.vnet.ibm.com> - 2016-09-16 16:00 +0200
        Re: [PATCH] memory-hotplug: Fix bad area access on  dissolve_free_huge_pages() Dave Hansen <dave.hansen@linux.intel.com> - 2016-09-16 18:30 +0200
          Re: [PATCH] memory-hotplug: Fix bad area access on  dissolve_free_huge_pages() Rui Teng <rui.teng@linux.vnet.ibm.com> - 2016-09-20 16:50 +0200
            Re: [PATCH] memory-hotplug: Fix bad area access on  dissolve_free_huge_pages() Dave Hansen <dave.hansen@linux.intel.com> - 2016-09-20 17:00 +0200
              Re: [PATCH] memory-hotplug: Fix bad area access on  dissolve_free_huge_pages() Rui Teng <rui.teng@linux.vnet.ibm.com> - 2016-09-20 18:00 +0200
                Re: [PATCH] memory-hotplug: Fix bad area access on  dissolve_free_huge_pages() Dave Hansen <dave.hansen@linux.intel.com> - 2016-09-20 19:50 +0200
                Re: [PATCH] memory-hotplug: Fix bad area access on  dissolve_free_huge_pages() Michal Hocko <mhocko@kernel.org> - 2016-09-21 14:10 +0200
                Re: [PATCH] memory-hotplug: Fix bad area access on  dissolve_free_huge_pages() Dave Hansen <dave.hansen@linux.intel.com> - 2016-09-21 18:10 +0200
                Re: [PATCH] memory-hotplug: Fix bad area access on  dissolve_free_huge_pages() Michal Hocko <mhocko@kernel.org> - 2016-09-21 18:30 +0200
                Re: [PATCH] memory-hotplug: Fix bad area access on  dissolve_free_huge_pages() Dave Hansen <dave.hansen@linux.intel.com> - 2016-09-21 18:40 +0200
                Re: [PATCH] memory-hotplug: Fix bad area access on  dissolve_free_huge_pages() Michal Hocko <mhocko@kernel.org> - 2016-09-21 19:00 +0200
    Re: [PATCH] memory-hotplug: Fix bad area access on  dissolve_free_huge_pages() Rui Teng <rui.teng@linux.vnet.ibm.com> - 2016-09-14 18:40 +0200

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