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/perf/util/btf.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 tools/perf/util/btf.c (limited to 'tools/perf/util/btf.c') diff --git a/tools/perf/util/btf.c b/tools/perf/util/btf.c new file mode 100644 index 000000000..50d98f3e8 --- /dev/null +++ b/tools/perf/util/btf.c @@ -0,0 +1,27 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Arnaldo Carvalho de Melo + * + * Copyright (C) 2024, Red Hat, Inc + */ + +#include +#include +#include + +const struct btf_member *__btf_type__find_member_by_name(struct btf *btf, + int type_id, const char *member_name) +{ + const struct btf_type *t = btf__type_by_id(btf, type_id); + const struct btf_member *m; + u32 i; + + for (i = 0, m = btf_members(t); i < btf_vlen(t); i++, m++) { + const char *current_member_name = btf__name_by_offset(btf, m->name_off); + + if (!strcmp(current_member_name, member_name)) + return m; + } + + return NULL; +} -- cgit v1.3.1