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Commit 2c4541e2 authored by Kirill A. Shutemov's avatar Kirill A. Shutemov Committed by Linus Torvalds
Browse files

mm: use vma_init() to initialize VMAs on stack and data segments 

Make sure to initialize all VMAs properly, not only those which come
from vm_area_cachep.

Link: http://lkml.kernel.org/r/20180724121139.62570-3-kirill.shutemov@linux.intel.com


Signed-off-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
Reviewed-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 027232da

arch/arm/kernel/process.c

+1 −0
Original line number Diff line number Diff line
@@ -338,6 +338,7 @@ static struct vm_area_struct gate_vma = { 


static int __init gate_vma_init(void)

{

	vma_init(&gate_vma, NULL);

	gate_vma.vm_page_prot = PAGE_READONLY_EXEC;

	return 0;

}

arch/arm/mach-rpc/ecard.c

+1 −1
Original line number Diff line number Diff line
@@ -237,8 +237,8 @@ static void ecard_init_pgtables(struct mm_struct *mm) 


	memcpy(dst_pgd, src_pgd, sizeof(pgd_t) * (EASI_SIZE / PGDIR_SIZE));



	vma_init(&vma, mm);

	vma.vm_flags = VM_EXEC;

	vma.vm_mm = mm;



	flush_tlb_range(&vma, IO_START, IO_START + IO_SIZE);

	flush_tlb_range(&vma, EASI_START, EASI_START + EASI_SIZE);

arch/arm64/include/asm/tlb.h

+3 −1
Original line number Diff line number Diff line
@@ -37,7 +37,9 @@ static inline void __tlb_remove_table(void *_table) 


static inline void tlb_flush(struct mmu_gather *tlb)

{

	struct vm_area_struct vma = { .vm_mm = tlb->mm, };

	struct vm_area_struct vma;



	vma_init(&vma, tlb->mm);



	/*

	 * The ASID allocator will either invalidate the ASID or mark

arch/arm64/mm/hugetlbpage.c

+5 −2
Original line number Diff line number Diff line
@@ -108,11 +108,13 @@ static pte_t get_clear_flush(struct mm_struct *mm, 
			     unsigned long pgsize,

			     unsigned long ncontig)

{

	struct vm_area_struct vma = { .vm_mm = mm };

	struct vm_area_struct vma;

	pte_t orig_pte = huge_ptep_get(ptep);

	bool valid = pte_valid(orig_pte);

	unsigned long i, saddr = addr;



	vma_init(&vma, mm);



	for (i = 0; i < ncontig; i++, addr += pgsize, ptep++) {

		pte_t pte = ptep_get_and_clear(mm, addr, ptep);
@@ -145,9 +147,10 @@ static void clear_flush(struct mm_struct *mm, 
			     unsigned long pgsize,

			     unsigned long ncontig)

{

	struct vm_area_struct vma = { .vm_mm = mm };

	struct vm_area_struct vma;

	unsigned long i, saddr = addr;



	vma_init(&vma, mm);

	for (i = 0; i < ncontig; i++, addr += pgsize, ptep++)

		pte_clear(mm, addr, ptep);

arch/ia64/include/asm/tlb.h

+1 −1
Original line number Diff line number Diff line
@@ -120,7 +120,7 @@ ia64_tlb_flush_mmu_tlbonly(struct mmu_gather *tlb, unsigned long start, unsigned 
		 */

		struct vm_area_struct vma;



		vma.vm_mm = tlb->mm;

		vma_init(&vma, tlb->mm);

		/* flush the address range from the tlb: */

		flush_tlb_range(&vma, start, end);

		/* now flush the virt. page-table area mapping the address range: */