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Date:   Fri, 27 Apr 2018 11:54:42 +0300
From:   Михаил Носов <drdeimosnn@...il.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Jérôme Glisse <jglisse@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: stable 4.16.5 hmm build error

>What .config is creating this?  I have not seen any kbuild reports of
this in the past.

.config - https://bugzilla.kernel.org/attachment.cgi?id=275579
src - https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.16.5.tar.xz

2018-04-27 10:30 GMT+03:00 Greg Kroah-Hartman <gregkh@...uxfoundation.org>:
> On Fri, Apr 27, 2018 at 02:19:24AM +0300, Михаил Носов wrote:
>> Oh. Yes. Tag v4.16.5 without commit
>> 9d8a463a7016e9e5578a561588a18acef139919c.
>> It's in v4.17-rc1/2.
>> Thank you.
>
> That patch does not apply to the stable trees.  I'm also confused by the
> lack of "real" git commit ids that are being referred to here, that
> commit refers to one that is not valid.
>
>> 2018-04-27 0:52 GMT+03:00 Randy Dunlap <rdunlap@...radead.org>:
>>
>> > https://bugzilla.kernel.org/show_bug.cgi?id=199515
>> >
>> > kernel/fork.o: In function `__mmdrop':
>> > /kernel/build_kernel/linux-4.16.4/kernel/fork.c:600: undefined reference
>> > to `hmm_mm_destroy'
>
> What .config is creating this?  I have not seen any kbuild reports of
> this in the past.
>
>> >
>> > "It is also reproduced in linux-4.16.5"
>> >
>> >
>> > There have been a few attempts to fix this build error.  The kernel
>> > mainline
>> > repo seems to have it fixed, but it looks to me like Arnd's latest patch
>> > (9d8a463a7016e: "mm/hmm: fix header file if/else/endif maze, again")
>> > was mis-merged to 4.16.5 stable.
>> >
>> > Please take a look.  Do you already have a fixup for this?
>
> thanks,
>
> greg k-h

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