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/err.h | 87 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 87 insertions(+) create mode 100644 tools/include/nolibc/err.h (limited to 'tools/include/nolibc/err.h') diff --git a/tools/include/nolibc/err.h b/tools/include/nolibc/err.h new file mode 100644 index 000000000..e22ae87a7 --- /dev/null +++ b/tools/include/nolibc/err.h @@ -0,0 +1,87 @@ +/* SPDX-License-Identifier: LGPL-2.1 OR MIT */ +/* + * formatted error message for NOLIBC + * Copyright (C) 2026 Thomas Weißschuh + */ + +/* make sure to include all global symbols */ +#include "nolibc.h" + +#ifndef _NOLIBC_ERR_H +#define _NOLIBC_ERR_H + +#include "errno.h" +#include "stdarg.h" +#include "sys.h" + +static __attribute__((unused)) +void vwarn(const char *fmt, va_list args) +{ + fprintf(stderr, "%s: ", program_invocation_short_name); + vfprintf(stderr, fmt, args); + fprintf(stderr, ": %m\n"); +} + +static __attribute__((unused)) +void vwarnx(const char *fmt, va_list args) +{ + fprintf(stderr, "%s: ", program_invocation_short_name); + vfprintf(stderr, fmt, args); + fprintf(stderr, "\n"); +} + +static __attribute__((unused)) +void warn(const char *fmt, ...) +{ + va_list args; + + va_start(args, fmt); + vwarn(fmt, args); + va_end(args); +} + +static __attribute__((unused)) +void warnx(const char *fmt, ...) +{ + va_list args; + + va_start(args, fmt); + vwarnx(fmt, args); + va_end(args); +} + +static __attribute__((noreturn, unused)) +void verr(int eval, const char *fmt, va_list args) +{ + vwarn(fmt, args); + exit(eval); +} + +static __attribute__((noreturn, unused)) +void verrx(int eval, const char *fmt, va_list args) +{ + warnx(fmt, args); + exit(eval); +} + +static __attribute__((noreturn, unused)) +void err(int eval, const char *fmt, ...) +{ + va_list args; + + va_start(args, fmt); + verr(eval, fmt, args); + va_end(args); +} + +static __attribute__((noreturn, unused)) +void errx(int eval, const char *fmt, ...) +{ + va_list args; + + va_start(args, fmt); + verrx(eval, fmt, args); + va_end(args); +} + +#endif /* _NOLIBC_ERR_H */ -- cgit v1.3.1