From: Ingo Molnar <mingo@elte.hu>
Date: Thu, 28 Feb 2008 13:02:08 +0000 (+0100)
Subject: x86: fix leak un ioremap_page_range() failure
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b16bf712f491808a8c926dd481c696fe7d73ee5a;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

x86: fix leak un ioremap_page_range() failure

Jan Beulich noticed it during code review that if a driver's ioremap()
fails (say due to -ENOMEM) then we might leak the struct vm_area.

Free it properly.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 882328efc3d..ac3c959e271 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -162,7 +162,7 @@ static void __iomem *__ioremap(unsigned long phys_addr, unsigned long size,
 	area->phys_addr = phys_addr;
 	vaddr = (unsigned long) area->addr;
 	if (ioremap_page_range(vaddr, vaddr + size, phys_addr, prot)) {
-		remove_vm_area((void *)(vaddr & PAGE_MASK));
+		free_vm_area(area);
 		return NULL;
 	}