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/include/nolibc/assert.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 tools/include/nolibc/assert.h (limited to 'tools/include/nolibc/assert.h') diff --git a/tools/include/nolibc/assert.h b/tools/include/nolibc/assert.h new file mode 100644 index 000000000..84ff8ad9a --- /dev/null +++ b/tools/include/nolibc/assert.h @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: LGPL-2.1 OR MIT */ +/* + * Assert for NOLIBC + * Copyright (C) 2026 Thomas Weißschuh + */ + +/* make sure to include all global symbols */ +#include "nolibc.h" + +#ifndef _NOLIBC_ASSERT_H +#define _NOLIBC_ASSERT_H + +#include "errno.h" +#include "stdio.h" +#include "stdlib.h" + +#endif /* _NOLIBC_ASSERT_H */ + +/* NDEBUG needs to be evaluated on *each* inclusion */ +#ifdef assert +#undef assert +#endif + +#ifndef NDEBUG +#define assert(expr) \ +({ \ + if (!(expr)) { \ + fprintf(stderr, "%s: %s:%d: %s: Assertion `%s' failed.\n", \ + program_invocation_short_name, __FILE__, __LINE__, __func__, \ + #expr); \ + abort(); \ + } \ +}) +#else +#define assert(expr) ((void)0) +#endif -- cgit v1.3.1