From 4e2e1de91471223ffe0ba2ba77b5565f908043ff Mon Sep 17 00:00:00 2001 From: "Liam R. Howlett" Date: Mon, 1 Mar 2021 14:29:09 -0500 Subject: [PATCH] arch/mips/kernel/traps: Use vma_lookup() instead of find_vma() 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. Signed-off-by: Liam R. Howlett --- arch/mips/kernel/traps.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index 0b4e06303c55b..6f07362de5cec 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -784,7 +784,6 @@ void force_fcr31_sig(unsigned long fcr31, void __user *fault_addr, int process_fpemu_return(int sig, void __user *fault_addr, unsigned long fcr31) { int si_code; - struct vm_area_struct *vma; switch (sig) { case 0: @@ -800,8 +799,7 @@ int process_fpemu_return(int sig, void __user *fault_addr, unsigned long fcr31) case SIGSEGV: mmap_read_lock(current->mm); - vma = find_vma(current->mm, (unsigned long)fault_addr); - if (vma && (vma->vm_start <= (unsigned long)fault_addr)) + if (vma_lookup(current->mm, (unsigned long)fault_addr)) si_code = SEGV_ACCERR; else si_code = SEGV_MAPERR; -- 2.50.1