exynos4210_pwm: Use ptimer_free() in the finalize function to avoid memleaks
When running device-introspect-test, a memory leak occurred in the exynos4210_pwm_init function, so use ptimer_free() in the finalize function to avoid it. ASAN shows memory leak stack: Indirect leak of 240 byte(s) in 5 object(s) allocated from: #0 0xffffab97e1f0 in __interceptor_calloc (/lib64/libasan.so.5+0xee1f0) #1 0xffffab256800 in g_malloc0 (/lib64/libglib-2.0.so.0+0x56800) #2 0xaaabf555db84 in timer_new_full /qemu/include/qemu/timer.h:523 #3 0xaaabf555db84 in timer_new /qemu/include/qemu/timer.h:544 #4 0xaaabf555db84 in timer_new_ns /qemu/include/qemu/timer.h:562 #5 0xaaabf555db84 in ptimer_init /qemu/hw/core/ptimer.c:433 #6 0xaaabf56a36cc in exynos4210_pwm_init /qemu/hw/timer/exynos4210_pwm.c:401 #7 0xaaabf6339f6c in object_initialize_with_type /qemu/qom/object.c:515 #8 0xaaabf633a1e0 in object_new_with_type /qemu/qom/object.c:729 #9 0xaaabf6375e40 in qmp_device_list_properties /qemu/qom/qom-qmp-cmds.c:153 #10 0xaaabf653d8ec in qmp_marshal_device_list_properties /qemu/qapi/qapi-commands-qdev.c:59 #11 0xaaabf6587d08 in do_qmp_dispatch_bh /qemu/qapi/qmp-dispatch.c:110 #12 0xaaabf6552708 in aio_bh_call /qemu/util/async.c:136 Reported-by: Euler Robot <euler.robot@huawei.com> Signed-off-by: Gan Qixin <ganqixin@huawei.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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@ -410,6 +410,16 @@ static void exynos4210_pwm_init(Object *obj)
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sysbus_init_mmio(dev, &s->iomem);
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}
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static void exynos4210_pwm_finalize(Object *obj)
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{
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Exynos4210PWMState *s = EXYNOS4210_PWM(obj);
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int i;
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for (i = 0; i < EXYNOS4210_PWM_TIMERS_NUM; i++) {
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ptimer_free(s->timer[i].ptimer);
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}
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}
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static void exynos4210_pwm_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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@ -423,6 +433,7 @@ static const TypeInfo exynos4210_pwm_info = {
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.parent = TYPE_SYS_BUS_DEVICE,
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.instance_size = sizeof(Exynos4210PWMState),
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.instance_init = exynos4210_pwm_init,
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.instance_finalize = exynos4210_pwm_finalize,
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.class_init = exynos4210_pwm_class_init,
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};
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