Re: [PATCH v2 1/2] vfio/display: Fix potential memleak of edid info

[Cédric Le Goater]

On 7/1/24 3:48 AM, Zhenzhong Duan wrote:
> EDID related device region info is leaked in vfio_display_edid_init()
> error path and VFIODisplay destroying path.
>
> Fixes: 08479114b0de ("vfio/display: add edid support.")
> Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>


Reviewed-by: Cédric Le Goater <clg@redhat.com>

Thanks,

C.


> ---
>   hw/vfio/display.c | 3 +++
>   1 file changed, 3 insertions(+)
>
> diff --git a/hw/vfio/display.c b/hw/vfio/display.c
> index 661e921616..9c57fd3888 100644
> --- a/hw/vfio/display.c
> +++ b/hw/vfio/display.c
> @@ -171,7 +171,9 @@ static void vfio_display_edid_init(VFIOPCIDevice *vdev)
>   
>   err:
>       trace_vfio_display_edid_write_error();
> +    g_free(dpy->edid_info);
>       g_free(dpy->edid_regs);
> +    dpy->edid_info = NULL;
>       dpy->edid_regs = NULL;
>       return;
>   }
> @@ -182,6 +184,7 @@ static void vfio_display_edid_exit(VFIODisplay *dpy)
>           return;
>       }
>   
> +    g_free(dpy->edid_info);
>       g_free(dpy->edid_regs);
>       g_free(dpy->edid_blob);
>       timer_free(dpy->edid_link_timer);