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

[Will Deacon]

On Thu, Feb 17, 2022 at 07:18:57PM +1100, Stephen Rothwell wrote:
> Hi all,
> 
> After merging the maple tree, today's linux-next build (arm64 defconfig)
> failed like this:
> 
> arch/arm64/kernel/elfcore.c: In function 'elf_core_extra_phdrs':
> arch/arm64/kernel/elfcore.c:13:35: error: 'struct mm_struct' has no member named 'mmap'
>    13 |                 for (vma = tsk->mm->mmap; vma; vma = vma->vm_next)      \
>       |                                   ^~
> arch/arm64/kernel/elfcore.c:69:9: note: in expansion of macro 'for_each_mte_vma'
>    69 |         for_each_mte_vma(current, vma)
>       |         ^~~~~~~~~~~~~~~~
> arch/arm64/kernel/elfcore.c:13:57: error: 'struct vm_area_struct' has no member named 'vm_next'
>    13 |                 for (vma = tsk->mm->mmap; vma; vma = vma->vm_next)      \
>       |                                                         ^~
> arch/arm64/kernel/elfcore.c:69:9: note: in expansion of macro 'for_each_mte_vma'
>    69 |         for_each_mte_vma(current, vma)
>       |         ^~~~~~~~~~~~~~~~
> arch/arm64/kernel/elfcore.c: In function 'elf_core_write_extra_phdrs':
> arch/arm64/kernel/elfcore.c:13:35: error: 'struct mm_struct' has no member named 'mmap'
>    13 |                 for (vma = tsk->mm->mmap; vma; vma = vma->vm_next)      \
>       |                                   ^~
> arch/arm64/kernel/elfcore.c:79:9: note: in expansion of macro 'for_each_mte_vma'
>    79 |         for_each_mte_vma(current, vma) {
>       |         ^~~~~~~~~~~~~~~~
> arch/arm64/kernel/elfcore.c:13:57: error: 'struct vm_area_struct' has no member named 'vm_next'
>    13 |                 for (vma = tsk->mm->mmap; vma; vma = vma->vm_next)      \
>       |                                                         ^~
> arch/arm64/kernel/elfcore.c:79:9: note: in expansion of macro 'for_each_mte_vma'
>    79 |         for_each_mte_vma(current, vma) {
>       |         ^~~~~~~~~~~~~~~~
> arch/arm64/kernel/elfcore.c: In function 'elf_core_extra_data_size':
> arch/arm64/kernel/elfcore.c:13:35: error: 'struct mm_struct' has no member named 'mmap'
>    13 |                 for (vma = tsk->mm->mmap; vma; vma = vma->vm_next)      \
>       |                                   ^~
> arch/arm64/kernel/elfcore.c:104:9: note: in expansion of macro 'for_each_mte_vma'
>   104 |         for_each_mte_vma(current, vma)
>       |         ^~~~~~~~~~~~~~~~
> arch/arm64/kernel/elfcore.c:13:57: error: 'struct vm_area_struct' has no member named 'vm_next'
>    13 |                 for (vma = tsk->mm->mmap; vma; vma = vma->vm_next)      \
>       |                                                         ^~
> arch/arm64/kernel/elfcore.c:104:9: note: in expansion of macro 'for_each_mte_vma'
>   104 |         for_each_mte_vma(current, vma)
>       |         ^~~~~~~~~~~~~~~~
> arch/arm64/kernel/elfcore.c: In function 'elf_core_write_extra_data':
> arch/arm64/kernel/elfcore.c:13:35: error: 'struct mm_struct' has no member named 'mmap'
>    13 |                 for (vma = tsk->mm->mmap; vma; vma = vma->vm_next)      \
>       |                                   ^~
> arch/arm64/kernel/elfcore.c:114:9: note: in expansion of macro 'for_each_mte_vma'
>   114 |         for_each_mte_vma(current, vma) {
>       |         ^~~~~~~~~~~~~~~~
> arch/arm64/kernel/elfcore.c:13:57: error: 'struct vm_area_struct' has no member named 'vm_next'
>    13 |                 for (vma = tsk->mm->mmap; vma; vma = vma->vm_next)      \
>       |                                                         ^~
> arch/arm64/kernel/elfcore.c:114:9: note: in expansion of macro 'for_each_mte_vma'
>   114 |         for_each_mte_vma(current, vma) {
>       |         ^~~~~~~~~~~~~~~~
> 
> Caused by commit
> 
>   b09e8361a4c3 ("mm: Remove the vma linked list")
> 
> interacting with commit
> 
>   6dd8b1a0b6cb ("arm64: mte: Dump the MTE tags in the core file")
> 
> from the arm64 tree.

Yikes, this is quite a mess. Liam -- how would you like to resolve this?

Will