From: Chris Metcalf <cmetcalf@tilera.com>
Date: Wed, 7 Aug 2013 19:42:34 +0000 (-0400)
Subject: tile: avoid struct vm_struct leak
X-Git-Tag: v3.12-rc1~120^2~42
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fad052dc4be7b1d9e7ff40ccd8ba2b8216823b51;p=platform%2Fkernel%2Flinux-exynos.git

tile: avoid struct vm_struct leak

If ioreamp_prot() fails in ioremap_page_range() due to kernel memory
exhaustion, we previously would leak a struct vm_struct.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
---

diff --git a/arch/tile/mm/pgtable.c b/arch/tile/mm/pgtable.c
index dfd63ce..2bd572b 100644
--- a/arch/tile/mm/pgtable.c
+++ b/arch/tile/mm/pgtable.c
@@ -568,7 +568,7 @@ void __iomem *ioremap_prot(resource_size_t phys_addr, unsigned long size,
 	addr = area->addr;
 	if (ioremap_page_range((unsigned long)addr, (unsigned long)addr + size,
 			       phys_addr, pgprot)) {
-		remove_vm_area((void *)(PAGE_MASK & (unsigned long) addr));
+		free_vm_area(area);
 		return NULL;
 	}
 	return (__force void __iomem *) (offset + (char *)addr);