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powerpc/fsl-booke: read buffer overflow

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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>
This commit is contained in:
Roel Kluin 2009-08-06 16:00:37 -07:00 committed by Benjamin Herrenschmidt
parent b6c316a1f6
commit 8dcd038a13
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/mm/fsl_booke_mmu.c
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@ -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];