From f011c2dae6cffc50ef67d9bd937b488ba5db8913 Mon Sep 17 00:00:00 2001
From: Nick Piggin <npiggin@suse.de>
Date: Wed, 19 Nov 2008 15:36:32 -0800
Subject: [PATCH] mm: vmalloc allocator off by one
Fix off by one bug in the KVA allocator that can leave gaps in the address
space.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
mm/vmalloc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index ba6b0f5f7fac6..46aab4dbf618a 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -362,7 +362,7 @@ static struct vmap_area *alloc_vmap_area(unsigned long size,
goto found;
}
- while (addr + size >= first->va_start && addr + size <= vend) {
+ while (addr + size > first->va_start && addr + size <= vend) {
addr = ALIGN(first->va_end + PAGE_SIZE, align);
n = rb_next(&first->rb_node);
--
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