Make sure to clear the transfer buffer before fetching the EDID to avoid leaking slab data to the logs on errors that leave the buffer unchanged.
Fixes: 69c7717c20cc ("drm/edid: Dump the EDID when drm_edid_get_panel_id() has an error") Cc: stable@vger.kernel.org # 6.2 Cc: Douglas Anderson dianders@chromium.org Signed-off-by: Johan Hovold johan+linaro@kernel.org --- drivers/gpu/drm/drm_edid.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 3841aba17abd..8707fe72a028 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -2797,7 +2797,7 @@ u32 drm_edid_get_panel_id(struct i2c_adapter *adapter) * the EDID then we'll just return 0. */
- base_block = kmalloc(EDID_LENGTH, GFP_KERNEL); + base_block = kzalloc(EDID_LENGTH, GFP_KERNEL); if (!base_block) return 0;