[PATCH v2 4/4] mm: Don't skip arch_sync_kernel_mappings() in error paths

[Catalin Marinas]

On Mon, Feb 17, 2025 at 02:04:17PM +0000, Ryan Roberts wrote:
> Fix callers that previously skipped calling arch_sync_kernel_mappings()
> if an error occurred during a pgtable update. The call is still required
> to sync any pgtable updates that may have occurred prior to hitting the
> error condition.
> 
> These are theoretical bugs discovered during code review.
> 
> Cc: stable at vger.kernel.org
> Fixes: 2ba3e6947aed ("mm/vmalloc: track which page-table levels were modified")
> Fixes: 0c95cba49255 ("mm: apply_to_pte_range warn and fail if a large pte is encountered")
> Reviewed-by: Anshuman Khandual <anshuman.khandual at arm.com>
> Signed-off-by: Ryan Roberts <ryan.roberts at arm.com>

Reviewed-by: Catalin Marinas <catalin.marinas at arm.com>