From 9ce2c3fc0be6e7d0bb2236a33bbb7a0f1943bd81 Mon Sep 17 00:00:00 2001 From: Liam Howlett Date: Mon, 28 Jun 2021 19:39:14 -0700 Subject: [PATCH] x86/sgx: use vma_lookup() in sgx_encl_find() Use vma_lookup() to find the VMA at a specific address. As vma_lookup() will return NULL if the address is not within any VMA, the start address no longer needs to be validated. Link: https://lkml.kernel.org/r/20210521174745.2219620-10-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett Reviewed-by: Laurent Dufour Acked-by: David Hildenbrand Acked-by: Davidlohr Bueso Cc: Geert Uytterhoeven Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/x86/kernel/cpu/sgx/encl.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/cpu/sgx/encl.h b/arch/x86/kernel/cpu/sgx/encl.h index 6e74f85..fec43ca 100644 --- a/arch/x86/kernel/cpu/sgx/encl.h +++ b/arch/x86/kernel/cpu/sgx/encl.h @@ -91,8 +91,8 @@ static inline int sgx_encl_find(struct mm_struct *mm, unsigned long addr, { struct vm_area_struct *result; - result = find_vma(mm, addr); - if (!result || result->vm_ops != &sgx_vm_ops || addr < result->vm_start) + result = vma_lookup(mm, addr); + if (!result || result->vm_ops != &sgx_vm_ops) return -EINVAL; *vma = result; -- 2.7.4