Re: [PATCH for-9.2 6/6] hm/nvram/xlnx-versal-efuse-ctrl: Call register_finalize_block

[Francisco Iglesias]

On Thu, Aug 22, 2024 at 05:21:27PM +0100, Peter Maydell wrote:
> The TYPE_XLNX_VERSAL_EFUSE_CTRL device creates a register block with
> register_init_block32() in its instance_init method; we must
> therefore destroy it in our instance_finalize method to avoid a leak
> in the QOM introspection "init-inspect-finalize" lifecycle:
> 
> Direct leak of 304 byte(s) in 1 object(s) allocated from:
>     #0 0x55f222b5b9d8 in __interceptor_calloc 
> (/mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/asan/qemu-system-aarch64+0x294e9d8)
>  (BuildId: 420
> 43d49e1139e3f3071b1f22fac1e3e7249c9a6)
>     #1 0x7fbb10669c50 in g_malloc0 
> debian/build/deb/../../../glib/gmem.c:161:13
>     #2 0x55f222f90c5d in register_init_block hw/core/register.c:248:34
>     #3 0x55f222f916be in register_init_block32 hw/core/register.c:299:12
>     #4 0x55f223bbdd15 in efuse_ctrl_init 
> hw/nvram/xlnx-versal-efuse-ctrl.c:718:9
>     #5 0x55f225b23391 in object_init_with_type qom/object.c:420:9
>     #6 0x55f225b0a66b in object_initialize_with_type qom/object.c:562:5
>     #7 0x55f225b0bf0d in object_new_with_type qom/object.c:782:5
>     #8 0x55f225b0bfe1 in object_new qom/object.c:797:12
>     #9 0x55f226309e0d in qmp_device_list_properties qom/qom-qmp-cmds.c:144:11
> 
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Reviewed-by: Francisco Iglesias <francisco.iglesias@amd.com>

> ---
>  include/hw/nvram/xlnx-versal-efuse.h | 1 +
>  hw/nvram/xlnx-versal-efuse-ctrl.c    | 6 +++---
>  2 files changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/include/hw/nvram/xlnx-versal-efuse.h 
> b/include/hw/nvram/xlnx-versal-efuse.h
> index 86e2261b9a3..afa4f4f9960 100644
> --- a/include/hw/nvram/xlnx-versal-efuse.h
> +++ b/include/hw/nvram/xlnx-versal-efuse.h
> @@ -44,6 +44,7 @@ struct XlnxVersalEFuseCtrl {
>      void *extra_pg0_lock_spec;      /* Opaque property */
>      uint32_t extra_pg0_lock_n16;
>  
> +    RegisterInfoArray *reg_array;
>      uint32_t regs[XLNX_VERSAL_EFUSE_CTRL_R_MAX];
>      RegisterInfo regs_info[XLNX_VERSAL_EFUSE_CTRL_R_MAX];
>  };
> diff --git a/hw/nvram/xlnx-versal-efuse-ctrl.c 
> b/hw/nvram/xlnx-versal-efuse-ctrl.c
> index def6fe3302b..8252a5cabe0 100644
> --- a/hw/nvram/xlnx-versal-efuse-ctrl.c
> +++ b/hw/nvram/xlnx-versal-efuse-ctrl.c
> @@ -712,9 +712,8 @@ static void efuse_ctrl_init(Object *obj)
>  {
>      XlnxVersalEFuseCtrl *s = XLNX_VERSAL_EFUSE_CTRL(obj);
>      SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
> -    RegisterInfoArray *reg_array;
>  
> -    reg_array =
> +    s->reg_array =
>          register_init_block32(DEVICE(obj), efuse_ctrl_regs_info,
>                                ARRAY_SIZE(efuse_ctrl_regs_info),
>                                s->regs_info, s->regs,
> @@ -722,7 +721,7 @@ static void efuse_ctrl_init(Object *obj)
>                                XLNX_VERSAL_EFUSE_CTRL_ERR_DEBUG,
>                                R_MAX * 4);
>  
> -    sysbus_init_mmio(sbd, &reg_array->mem);
> +    sysbus_init_mmio(sbd, &s->reg_array->mem);
>      sysbus_init_irq(sbd, &s->irq_efuse_imr);
>  }
>  
> @@ -730,6 +729,7 @@ static void efuse_ctrl_finalize(Object *obj)
>  {
>      XlnxVersalEFuseCtrl *s = XLNX_VERSAL_EFUSE_CTRL(obj);
>  
> +    register_finalize_block(s->reg_array);
>      g_free(s->extra_pg0_lock_spec);
>  }
>  
> -- 
> 2.34.1
>