diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.15/950-0567-drm-Fix-double-free-from-checking-if-gamma-lut-has-b.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.15/950-0567-drm-Fix-double-free-from-checking-if-gamma-lut-has-b.patch | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.15/950-0567-drm-Fix-double-free-from-checking-if-gamma-lut-has-b.patch b/target/linux/bcm27xx/patches-5.15/950-0567-drm-Fix-double-free-from-checking-if-gamma-lut-has-b.patch new file mode 100644 index 0000000000..c0aee3797d --- /dev/null +++ b/target/linux/bcm27xx/patches-5.15/950-0567-drm-Fix-double-free-from-checking-if-gamma-lut-has-b.patch @@ -0,0 +1,26 @@ +From 3e52ea57180471250ba4bb426527ab9bbad4e5a4 Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.com> +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 <dave.stevenson@raspberrypi.com> +--- + 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); |