Commit 8dcd038a authored Aug 06, 2009 by Roel Kluin Committed by Benjamin Herrenschmidt Aug 20, 2009

powerpc/fsl-booke: read buffer overflow



cam[tlbcam_index] is checked before tlbcam_index < ARRAY_SIZE(cam)

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

parent b6c316a1

arch/powerpc/mm/fsl_booke_mmu.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -161,7 +161,7 @@ unsigned long __init mmu_mapin_ram(void)
		unsigned long virt = PAGE_OFFSET;
		phys_addr_t phys = memstart_addr;

		while (cam[tlbcam_index] && tlbcam_index < ARRAY_SIZE(cam)) {
		while (tlbcam_index < ARRAY_SIZE(cam) && cam[tlbcam_index]) {
		settlbcam(tlbcam_index, virt, phys, cam[tlbcam_index], PAGE_KERNEL_X, 0);
		virt += cam[tlbcam_index];
		phys += cam[tlbcam_index];

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