From 3e52ea57180471250ba4bb426527ab9bbad4e5a4 Mon Sep 17 00:00:00 2001 From: Dave Stevenson Date: Mon, 8 Nov 2021 13:55:15 +0000 Subject: [PATCH] drm: Fix double free from checking if gamma lut has been updated The code falls through to "fail" under all conditions, so there is no need for the drm_property_blob_put if the gamma lut hasn't been changed. Fixes: 9cca26674a2b "drm: Check whether the gamma lut has changed before updating" Signed-off-by: Dave Stevenson --- drivers/gpu/drm/drm_color_mgmt.c | 2 -- 1 file changed, 2 deletions(-) --- a/drivers/gpu/drm/drm_color_mgmt.c +++ b/drivers/gpu/drm/drm_color_mgmt.c @@ -330,8 +330,6 @@ static int drm_crtc_legacy_gamma_set(str memcmp(crtc_state->gamma_lut->data, blob_data, blob->length)) replaced |= drm_property_replace_blob(&crtc_state->gamma_lut, use_gamma_lut ? blob : NULL); - else - drm_property_blob_put(blob); crtc_state->color_mgmt_changed |= replaced; ret = drm_atomic_commit(state);