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    SubjectRe: mm: BUG in resv_map_release
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    On 03/28/2017 04:38 PM, Andrew Morton wrote:
    > On Thu, 23 Mar 2017 11:19:38 +0100 Dmitry Vyukov <dvyukov@google.com> wrote:
    >
    >> Hello,
    >>
    >> I've got the following BUG while running syzkaller fuzzer.
    >> Note the injected kmalloc failure, most likely it's the root cause.
    >>
    >
    > Yes, probably the logic(?) in region_chg() leaked a
    > resv->adds_in_progress++, although I'm not sure how. And afaict that
    > code can leak the memory at *nrg if the `trg' allocation attempt failed
    > on the second or later pass around the retry loop.
    >
    > Blah. Does someone want to take a look at it?

    I sent out a patch to address this and Hillf Acked. Unfortunately,
    there was a typo in your e-mail when I sent out the patch. So, you
    may not have noticed.

    [PATCH] mm/hugetlb: Don't call region_abort if region_chg fails
    http://marc.info/?l=linux-mm&m=149033588500724&w=2

    If you need/want me to send again, let me know.
    --
    Mike Kravetz

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