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

[Marc-André Lureau]

On Mon, Jul 1, 2024 at 5:51 AM Zhenzhong Duan <zhenzhong.duan@intel.com> 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: Marc-André Lureau <marcandre.lureau@redhat.com>

 

---
 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);
--
2.34.1

--

Marc-André Lureau