Commit 8d1cf859 authored Jul 28, 2020 by Arvind Sankar Committed by Ingo Molnar Jul 31, 2020

x86/kaslr: Fix off-by-one error in __process_mem_region()



In case of an overlap, the beginning of the region should be used even
if it is exactly image_size, not just strictly larger.

Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20200728225722.67457-6-nivedita@alum.mit.edu

parent 45128694

arch/x86/boot/compressed/kaslr.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -669,7 +669,7 @@ static void __process_mem_region(struct mem_vector *entry,
		}

		/* Store beginning of region if holds at least image_size. */
		if (overlap.start > region.start + image_size) {
		if (overlap.start >= region.start + image_size) {
		struct mem_vector beginning;

		beginning.start = region.start;

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