powerpc/fsl-booke: Read buffer overflow

PATCH New Roel Kluin 1 participant 1 message Jul 31, 2009 PowerPC

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Roel Kluin

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2009-07-31 12:35 UTC #0 lore raw

PATCH 1/1 powerpc/fsl-booke: Read buffer overflow

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

Signed-off-by Roel Kluin <[email protected]>

---

arch/powerpc/mm/fsl_booke_mmu.c +1 -1

index bb3d659..dc93e95 100644
@@ -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];