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authorLinus Torvalds <torvalds@linux-foundation.org>2022-02-13 11:58:11 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2022-02-13 11:58:11 -0800
commite89d3a46710908c3973397849e758f6ca42db77d (patch)
tree94e25956a61d500cf90111828bae92ed8e7ac991
parentc5d714aa6dce262482992cccc0ab01383294f7ac (diff)
parent1b9e740a81f91ae338b29ed70455719804957b80 (diff)
Merge tag 'kbuild-fixes-v5.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada: - Fix the truncated path issue for HAVE_GCC_PLUGINS test in Kconfig - Move -Wunsligned-access to W=1 builds to avoid sprinkling warnings for the latest Clang - Fix missing fclose() in Kconfig - Fix Kconfig to touch dep headers correctly when KCONFIG_AUTOCONFIG is overridden. * tag 'kbuild-fixes-v5.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kconfig: fix failing to generate auto.conf kconfig: fix missing fclose() on error paths Makefile.extrawarn: Move -Wunaligned-access to W=1 kconfig: let 'shell' return enough output for deep path names
-rw-r--r--scripts/Makefile.extrawarn1
-rw-r--r--scripts/kconfig/confdata.c25
-rw-r--r--scripts/kconfig/preprocess.c2
3 files changed, 17 insertions, 11 deletions
diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn
index d53825503874..8be892887d71 100644
--- a/scripts/Makefile.extrawarn
+++ b/scripts/Makefile.extrawarn
@@ -51,6 +51,7 @@ KBUILD_CFLAGS += -Wno-sign-compare
KBUILD_CFLAGS += -Wno-format-zero-length
KBUILD_CFLAGS += $(call cc-disable-warning, pointer-to-enum-cast)
KBUILD_CFLAGS += -Wno-tautological-constant-out-of-range-compare
+KBUILD_CFLAGS += $(call cc-disable-warning, unaligned-access)
endif
endif
diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 59717be31210..d3c3a61308ad 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -979,10 +979,10 @@ static int conf_write_autoconf_cmd(const char *autoconf_name)
fprintf(out, "\n$(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");
@@ -994,14 +994,19 @@ static int conf_write_autoconf_cmd(const char *autoconf_name)
static int conf_touch_deps(void)
{
- const char *name;
+ const char *name, *tmp;
struct symbol *sym;
int res, i;
- strcpy(depfile_path, "include/config/");
- depfile_prefix_len = strlen(depfile_path);
-
name = conf_get_autoconfig_name();
+ tmp = strrchr(name, '/');
+ depfile_prefix_len = tmp ? tmp - name + 1 : 0;
+ if (depfile_prefix_len + 1 > sizeof(depfile_path))
+ return -1;
+
+ strncpy(depfile_path, name, depfile_prefix_len);
+ depfile_path[depfile_prefix_len] = 0;
+
conf_read_simple(name, S_DEF_AUTO);
sym_calc_value(modules_sym);
@@ -1093,10 +1098,10 @@ static int __conf_write_autoconf(const char *filename,
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");
diff --git a/scripts/kconfig/preprocess.c b/scripts/kconfig/preprocess.c
index 0590f86df6e4..748da578b418 100644
--- a/scripts/kconfig/preprocess.c
+++ b/scripts/kconfig/preprocess.c
@@ -141,7 +141,7 @@ static char *do_lineno(int argc, char *argv[])
static char *do_shell(int argc, char *argv[])
{
FILE *p;
- char buf[256];
+ char buf[4096];
char *cmd;
size_t nread;
int i;