[Qemu-devel] [PATCH] misc: zynq-xadc: Fix off-by-one

[Peter Crosthwaite]

This bounds check was off-by-one. Fix.

Reported-by: Paolo Bonzini <pbonz...@redhat.com>
Signed-off-by: Peter Crosthwaite <crosthwaite.pe...@gmail.com>
---
 hw/misc/zynq-xadc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/misc/zynq-xadc.c b/hw/misc/zynq-xadc.c
index 1a32595..d160ff2 100644
--- a/hw/misc/zynq-xadc.c
+++ b/hw/misc/zynq-xadc.c
@@ -220,7 +220,7 @@ static void zynq_xadc_write(void *opaque, hwaddr offset, 
uint64_t val,
             break;
         }
 
-        if (xadc_reg > ZYNQ_XADC_NUM_ADC_REGS && xadc_cmd != CMD_NOP) {
+        if (xadc_reg >= ZYNQ_XADC_NUM_ADC_REGS && xadc_cmd != CMD_NOP) {
             qemu_log_mask(LOG_GUEST_ERROR, "read/write op to invalid xadc "
                           "reg 0x%x\n", xadc_reg);
             break;
-- 
1.9.1