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 --- drivers/misc/lkdtm/rodata.c | 11 +++++++++++ 1 file changed, 11 insertions(+) create mode 100644 drivers/misc/lkdtm/rodata.c (limited to 'drivers/misc/lkdtm/rodata.c') diff --git a/drivers/misc/lkdtm/rodata.c b/drivers/misc/lkdtm/rodata.c new file mode 100644 index 000000000..baacb876d --- /dev/null +++ b/drivers/misc/lkdtm/rodata.c @@ -0,0 +1,11 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * This includes functions that are meant to live entirely in .rodata + * (via objcopy tricks), to validate the non-executability of .rodata. + */ +#include "lkdtm.h" + +void noinstr lkdtm_rodata_do_nothing(void) +{ + /* Does nothing. We just want an architecture agnostic "return". */ +} -- cgit v1.3.1