From: Masahiro Yamada <masahiroy@xxxxxxxxxx> commit d23a0c3718222a42430fd56359478a6fc7675070 upstream. The file is not closed when ferror() fails. Fixes: 00d674cb3536 ("kconfig: refactor conf_write_dep()") Fixes: 57ddd07c4560 ("kconfig: refactor conf_write_autoconf()") Reported-by: Ryan Cai <ycaibb@xxxxxxxxx> Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- scripts/kconfig/confdata.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) --- a/scripts/kconfig/confdata.c +++ b/scripts/kconfig/confdata.c @@ -977,10 +977,10 @@ static int conf_write_autoconf_cmd(const fprintf(out, "\n$(deps_config): ;\n"); - if (ferror(out)) /* error check for all fprintf() calls */ - return -1; - + ret = ferror(out); /* error check for all fprintf() calls */ fclose(out); + if (ret) + return -1; if (rename(tmp, name)) { perror("rename"); @@ -1091,10 +1091,10 @@ static int __conf_write_autoconf(const c print_symbol(file, sym); /* check possible errors in conf_write_heading() and print_symbol() */ - if (ferror(file)) - return -1; - + ret = ferror(file); fclose(file); + if (ret) + return -1; if (rename(tmp, filename)) { perror("rename"); Patches currently in stable-queue which might be from masahiroy@xxxxxxxxxx are queue-5.16/kconfig-fix-missing-fclose-on-error-paths.patch queue-5.16/makefile.extrawarn-move-wunaligned-access-to-w-1.patch