From bce7698e2e6565bb765bd0522337f29f5f312624 Mon Sep 17 00:00:00 2001 From: Haojie Li Date: Tue, 25 Aug 2026 18:08:45 +0800 Subject: drm/mediatek: Add missing IS_ERR check for ovl_adaptor platform device platform_device_register_data() can fail and return an ERR_PTR, but the return value is used without checking, leading to an invalid pointer being stored in ddp_comp[].dev and passed to component_match_add() and mtk_ddp_comp_init(), which could result in a kernel crash. Add an IS_ERR() check to jump to the error handling path on failure. Fixes: 0d9eee9118b7 ("drm/mediatek: Add drm ovl_adaptor sub driver for MT8195") Cc: stable@vger.kernel.org Signed-off-by: Haojie Li Reviewed-by: CK Hu Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20260825100845.438893-1-lihaojie@kylinos.cn/ Signed-off-by: Chun-Kuang Hu --- tools/testing/selftests/lib/Makefile | 8 ++++++++ tools/testing/selftests/lib/bitmap.sh | 3 +++ tools/testing/selftests/lib/config | 3 +++ 3 files changed, 14 insertions(+) create mode 100644 tools/testing/selftests/lib/Makefile create mode 100755 tools/testing/selftests/lib/bitmap.sh create mode 100644 tools/testing/selftests/lib/config (limited to 'tools/testing/selftests/lib') diff --git a/tools/testing/selftests/lib/Makefile b/tools/testing/selftests/lib/Makefile new file mode 100644 index 000000000..f876bf474 --- /dev/null +++ b/tools/testing/selftests/lib/Makefile @@ -0,0 +1,8 @@ +# SPDX-License-Identifier: GPL-2.0-only +# Makefile for lib/ function selftests + +# No binaries, but make sure arg-less "make" doesn't trigger "run_tests" +all: + +TEST_PROGS := bitmap.sh +include ../lib.mk diff --git a/tools/testing/selftests/lib/bitmap.sh b/tools/testing/selftests/lib/bitmap.sh new file mode 100755 index 000000000..00a416fbc --- /dev/null +++ b/tools/testing/selftests/lib/bitmap.sh @@ -0,0 +1,3 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +$(dirname $0)/../kselftest/module.sh "bitmap" test_bitmap diff --git a/tools/testing/selftests/lib/config b/tools/testing/selftests/lib/config new file mode 100644 index 000000000..377b3699f --- /dev/null +++ b/tools/testing/selftests/lib/config @@ -0,0 +1,3 @@ +CONFIG_TEST_BITMAP=m +CONFIG_PRIME_NUMBERS=m +CONFIG_TEST_BITOPS=m -- cgit v1.3.1