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/trace.h | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 tools/perf/util/trace.h (limited to 'tools/perf/util/trace.h') diff --git a/tools/perf/util/trace.h b/tools/perf/util/trace.h new file mode 100644 index 000000000..fbbcfe6f4 --- /dev/null +++ b/tools/perf/util/trace.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef UTIL_TRACE_H +#define UTIL_TRACE_H + +#include /* for FILE */ + +enum trace_summary_mode { + SUMMARY__NONE = 0, + SUMMARY__BY_TOTAL, + SUMMARY__BY_THREAD, + SUMMARY__BY_CGROUP, +}; + +#ifdef HAVE_BPF_SKEL + +int trace_prepare_bpf_summary(enum trace_summary_mode mode); +void trace_start_bpf_summary(void); +void trace_end_bpf_summary(void); +int trace_print_bpf_summary(FILE *fp, int max_summary); +void trace_cleanup_bpf_summary(void); + +#else /* !HAVE_BPF_SKEL */ + +static inline int trace_prepare_bpf_summary(enum trace_summary_mode mode __maybe_unused) +{ + return -1; +} +static inline void trace_start_bpf_summary(void) {} +static inline void trace_end_bpf_summary(void) {} +static inline int trace_print_bpf_summary(FILE *fp __maybe_unused, int max_summary __maybe_unused) +{ + return 0; +} +static inline void trace_cleanup_bpf_summary(void) {} + +#endif /* HAVE_BPF_SKEL */ + +#endif /* UTIL_TRACE_H */ -- cgit v1.3.1