6 files changed, 36 insertions, 12 deletions
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 0d434d0afc0b..2f66ed388d1c 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -52,6 +52,13 @@ ifndef obj
 $(warning kbuild: Makefile.build is included improperly)
 endif
 
+ifeq ($(MAKECMDGOALS)$(need-modorder),)
+ifneq ($(obj-m),)
+$(warning $(patsubst %.o,'%.ko',$(obj-m)) will not be built even though obj-m is specified.)
+$(warning You cannot use subdir-y/m to visit a module Makefile. Use obj-y/m instead.)
+endif
+endif
+
 # ===========================================================================
 
 ifneq ($(strip $(lib-y) $(lib-m) $(lib-)),)
@@ -487,7 +494,9 @@ targets += $(call intermediate_targets, .asn1.o, .asn1.c .asn1.h) \
 
 PHONY += $(subdir-ym)
 $(subdir-ym):
-	$(Q)$(MAKE) $(build)=$@ need-builtin=$(if $(findstring $@,$(subdir-obj-y)),1)
+	$(Q)$(MAKE) $(build)=$@ \
+	need-builtin=$(if $(filter $@/built-in.a, $(subdir-obj-y)),1) \
+	need-modorder=$(if $(need-modorder),$(if $(filter $@/modules.order, $(modorder)),1))
 
 # Add FORCE to the prequisites of a target to force it to be always rebuilt.
 # ---------------------------------------------------------------------------
diff --git a/scripts/Makefile.kasan b/scripts/Makefile.kasan
index 6410bd22fe38..03757cc60e06 100644
--- a/scripts/Makefile.kasan
+++ b/scripts/Makefile.kasan
@@ -1,4 +1,9 @@
 # SPDX-License-Identifier: GPL-2.0
+ifdef CONFIG_KASAN
+CFLAGS_KASAN_NOSANITIZE := -fno-builtin
+KASAN_SHADOW_OFFSET ?= $(CONFIG_KASAN_SHADOW_OFFSET)
+endif
+
 ifdef CONFIG_KASAN_GENERIC
 
 ifdef CONFIG_KASAN_INLINE
@@ -7,8 +12,6 @@ else
 	call_threshold := 0
 endif
 
-KASAN_SHADOW_OFFSET ?= $(CONFIG_KASAN_SHADOW_OFFSET)
-
 CFLAGS_KASAN_MINIMAL := -fsanitize=kernel-address
 
 cc-param = $(call cc-option, -mllvm -$(1), $(call cc-option, --param $(1)))
@@ -45,7 +48,3 @@ CFLAGS_KASAN := -fsanitize=kernel-hwaddress \
 		$(instrumentation_flags)
 
 endif # CONFIG_KASAN_SW_TAGS
-
-ifdef CONFIG_KASAN
-CFLAGS_KASAN_NOSANITIZE := -fno-builtin
-endif
diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
index 92ed02d7cd5e..26e6574ecd08 100644
--- a/scripts/Makefile.modpost
+++ b/scripts/Makefile.modpost
@@ -85,10 +85,8 @@ endif
 
 include scripts/Makefile.lib
 
-modorder := $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/)modules.order
-
 # find all modules listed in modules.order
-modules := $(sort $(shell cat $(modorder)))
+modules := $(sort $(shell cat $(MODORDER)))
 
 # Stop after building .o files if NOFINAL is set. Makes compile tests quicker
 __modpost: $(if $(KBUILD_MODPOST_NOFINAL), $(modules:.ko:.o),$(modules))
@@ -98,7 +96,7 @@ MODPOST += $(subst -i,-n,$(filter -i,$(MAKEFLAGS))) -s -T - $(wildcard vmlinux)
 
 # We can go over command line length here, so be careful.
 quiet_cmd_modpost = MODPOST $(words $(modules)) modules
-      cmd_modpost = sed 's/ko$$/o/' $(modorder) | $(MODPOST)
+      cmd_modpost = sed 's/ko$$/o/' $(MODORDER) | $(MODPOST)
 
 PHONY += modules-modpost
 modules-modpost:
diff --git a/scripts/coccinelle/api/atomic_as_refcounter.cocci b/scripts/coccinelle/api/atomic_as_refcounter.cocci
index 988120e0fd67..0f78d94abc35 100644
--- a/scripts/coccinelle/api/atomic_as_refcounter.cocci
+++ b/scripts/coccinelle/api/atomic_as_refcounter.cocci
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 // Check if refcount_t type and API should be used
 // instead of atomic_t type when dealing with refcounters
 //
diff --git a/scripts/kernel-doc b/scripts/kernel-doc
index 6b03012750da..81dc91760b23 100755
--- a/scripts/kernel-doc
+++ b/scripts/kernel-doc
@@ -1245,7 +1245,7 @@ sub dump_enum($$) {
     # strip #define macros inside enums
     $x =~ s@#\s*((define|ifdef)\s+|endif)[^;]*;@@gos;
 
-    if ($x =~ /enum\s+(\w+)\s*\{(.*)\}/) {
+    if ($x =~ /enum\s+(\w*)\s*\{(.*)\}/) {
 	$declaration_name = $1;
 	my $members = $2;
 	my %_members;
@@ -1580,6 +1580,7 @@ sub dump_function($$) {
     $prototype =~ s/__must_check +//;
     $prototype =~ s/__weak +//;
     $prototype =~ s/__sched +//;
+    $prototype =~ s/__printf\s*\(\s*\d*\s*,\s*\d*\s*\) +//;
     my $define = $prototype =~ s/^#\s*define\s+//; #ak added
     $prototype =~ s/__attribute__\s*\(\(
             (?:
diff --git a/scripts/tools-support-relr.sh b/scripts/tools-support-relr.sh
new file mode 100755
index 000000000000..97a2c844a95e
--- /dev/null
+++ b/scripts/tools-support-relr.sh
@@ -0,0 +1,16 @@
+#!/bin/sh -eu
+# SPDX-License-Identifier: GPL-2.0
+
+tmp_file=$(mktemp)
+trap "rm -f $tmp_file.o $tmp_file $tmp_file.bin" EXIT
+
+cat << "END" | "$CC" -c -x c - -o $tmp_file.o >/dev/null 2>&1
+void *p = &p;
+END
+"$LD" $tmp_file.o -shared -Bsymbolic --pack-dyn-relocs=relr -o $tmp_file
+
+# Despite printing an error message, GNU nm still exits with exit code 0 if it
+# sees a relr section. So we need to check that nothing is printed to stderr.
+test -z "$("$NM" $tmp_file 2>&1 >/dev/null)"
+
+"$OBJCOPY" -O binary $tmp_file $tmp_file.bin