Re: [Qemu-devel] [PATCH 2/3] hw/ide/pci: Fix memory leak

[Paolo Bonzini <pbonzini@redhat.com>]

On 25/05/2015 10:37, Shannon Zhao wrote:
> From: Shannon Zhao <shannon.zhao@linaro.org>
> 
> valgrind complains about:
> ==16447== 16 bytes in 2 blocks are definitely lost in loss record 1,304 of 3,310
> ==16447==    at 0x4C2845D: malloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
> ==16447==    by 0x2E4FD7: malloc_and_trace (vl.c:2546)
> ==16447==    by 0x64C770E: g_malloc (in /usr/lib64/libglib-2.0.so.0.3600.3)
> ==16447==    by 0x36FB47: qemu_extend_irqs (irq.c:55)
> ==16447==    by 0x36FBD3: qemu_allocate_irqs (irq.c:64)
> ==16447==    by 0x3B4B44: bmdma_init (pci.c:464)
> ==16447==    by 0x3B547B: pci_piix_init_ports (piix.c:144)
> ==16447==    by 0x3B55D2: pci_piix_ide_realize (piix.c:164)
> ==16447==    by 0x3EAEC6: pci_qdev_realize (pci.c:1790)
> ==16447==    by 0x36C685: device_set_realized (qdev.c:1058)
> ==16447==    by 0x47179E: property_set_bool (object.c:1514)
> ==16447==    by 0x470098: object_property_set (object.c:837)
> 
> Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com>
> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
> ---
>  hw/ide/pci.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/hw/ide/pci.c b/hw/ide/pci.c
> index 1b3d1c1..c5c4441 100644
> --- a/hw/ide/pci.c
> +++ b/hw/ide/pci.c
> @@ -464,6 +464,7 @@ void bmdma_init(IDEBus *bus, BMDMAState *bm, PCIIDEState *d)
>      irq = qemu_allocate_irqs(bmdma_irq, bm, 1);
>      bus->irq = *irq;
>      bm->pci_dev = d;
> +    g_free(irq);
>  }

You can use qemu_allocate_irq here:

   bus->irq = qemu_allocate_irq(bmdma_irq, bm, 0);

Paolo

>  static const TypeInfo pci_ide_type_info = {
>