linux-kernel - Re: linux-next: build failure after merge of the mm tree

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Message-ID: <CAJuCfpHJLWncN3rqNYbyTpcSeD_ykQxrKCM5y6HjU-zQw8bNRw@mail.gmail.com>
Date: Tue, 23 Jan 2024 15:14:53 -0800
From: Suren Baghdasaryan <surenb@...gle.com>
To: Stephen Rothwell <sfr@...b.auug.org.au>
Cc: Andrew Morton <akpm@...ux-foundation.org>, 
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, 
	Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the mm tree

On Tue, Jan 23, 2024 at 3:05 PM Stephen Rothwell <sfr@...b.auug.orgau> wrote:
>
> Hi all,
>
> After merging the mm tree, today's linux-next build (powerpc
> ppc64_defconfig) failed like this:
>
> fs/proc/task_mmu.c: In function 'get_vma_snapshow':
> fs/proc/task_mmu.c:145:19: error: 'struct vm_area_struct' has no member named 'anon_name'; did you mean 'anon_vma'?
>   145 |         if (copy->anon_name && !anon_vma_name_get_rcu(copy))
>       |                   ^~~~~~~~~
>       |                   anon_vma
> fs/proc/task_mmu.c:161:19: error: 'struct vm_area_struct' has no member named 'anon_name'; did you mean 'anon_vma'?
>   161 |         if (copy->anon_name)
>       |                   ^~~~~~~~~
>       |                   anon_vma
> fs/proc/task_mmu.c:162:41: error: 'struct vm_area_struct' has no member named 'anon_name'; did you mean 'anon_vma'?
>   162 |                 anon_vma_name_put(copy->anon_name);
>       |                                         ^~~~~~~~~
>       |                                         anon_vma
> fs/proc/task_mmu.c: In function 'put_vma_snapshot':
> fs/proc/task_mmu.c:174:18: error: 'struct vm_area_struct' has no member named 'anon_name'; did you mean 'anon_vma'?
>   174 |         if (vma->anon_name)
>       |                  ^~~~~~~~~
>       |                  anon_vma
> fs/proc/task_mmu.c:175:40: error: 'struct vm_area_struct' has no member named 'anon_name'; did you mean 'anon_vma'?
>   175 |                 anon_vma_name_put(vma->anon_name);
>       |                                        ^~~~~~~~~
>       |                                        anon_vma
>
> Caused by commit
>
>   786cebbd51a4 ("mm/maps: read proc/pid/maps under RCU")
>
> from the mm-unstable branch.
>
> This build does not have CONFIG_ANON_VMA_NAME set.
>
> I have reverted that commit for today.

Yes, this problem was reported yesterday and I just posted v2 with a
fix: https://lore.kernel.org/all/20240123231014.3801041-1-surenb@google.com/
Thanks,
Suren.


>
> --
> Cheers,
> Stephen Rothwell