Subject: Re: linux-next: Build failure after merge of the tip tree

From: Borislav Petkov <[email-masked]>
Date: Wed, 19 Apr 2023 20:50:05 +0200

On Wed, Apr 19, 2023 at 07:21:36PM +0100, [email-masked] wrote:
> Hi all,
> 
> After merging the rcu tree, today's linux-next build (arm64 defconfig)
> failed like this:
> 
> /tmp/next/build/mm/migrate.c: In function 'remove_migration_pte':
> /tmp/next/build/mm/migrate.c:222:31: error: too few arguments to function 'pte_mkwrite'
>   222 |                         pte = pte_mkwrite(pte);
>       |                               ^~~~~~~~~~~
> In file included from /tmp/next/build/include/linux/pgtable.h:6,
>                  from /tmp/next/build/include/linux/mm.h:29,
>                  from /tmp/next/build/include/linux/migrate.h:5,
>                  from /tmp/next/build/mm/migrate.c:16:
> /tmp/next/build/arch/arm64/include/asm/pgtable.h:190:21: note: declared here
>   190 | static inline pte_t pte_mkwrite(pte_t pte, struct vm_area_struct *vma)
>       |                     ^~~~~~~~~~~
> 
> Caused by commit
> 
>   717f95b494ac36 ("mm: don't check VMA write permissions if the PTE/PMD indicates write permissions")
> 
> from the mm tree interacting with
> 
>   74fd30bd28e4c7 ("mm: Make pte_mkwrite() take a VMA")
> 
> from the tip tree.  I've applied the fixup below

Thanks for letting us know - we'll keep this in mind when sending the
piles of patches to Linus next week.

-- 
Regards/Gruss,
    Boris.

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