Merge tag 'kbuild-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - fix warnings in 'make clean' for ARCH=um, hexagon, h8300, unicore32

 - ensure to rebuild all objects when the compiler is upgraded

 - exclude system headers from dependency tracking and fixdep processing

 - fix potential bit-size mismatch between the kernel and BPF user-mode
   helper

 - add the new syntax 'userprogs' to build user-space programs for the
   target architecture (the same arch as the kernel)

 - compile user-space sample code under samples/ for the target arch
   instead of the host arch

 - make headers_install fail if a CONFIG option is leaked to user-space

 - sanitize the output format of scripts/checkstack.pl

 - handle ARM 'push' instruction in scripts/checkstack.pl

 - error out before modpost if a module name conflict is found

 - error out when multiple directories are passed to M= because this
   feature is broken for a long time

 - add CONFIG_DEBUG_INFO_COMPRESSED to support compressed debug info

 - a lot of cleanups of modpost

 - dump vmlinux symbols out into vmlinux.symvers, and reuse it in the
   second pass of modpost

 - do not run the second pass of modpost if nothing in modules is
   updated

 - install modules.builtin(.modinfo) by 'make install' as well as by
   'make modules_install' because it is useful even when
   CONFIG_MODULES=n

 - add new command line variables, GZIP, BZIP2, LZOP, LZMA, LZ4, and XZ
   to allow users to use alternatives such as pigz, pbzip2, etc.

* tag 'kbuild-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (96 commits)
  kbuild: add variables for compression tools
  Makefile: install modules.builtin even if CONFIG_MODULES=n
  mksysmap: Fix the mismatch of '.L' symbols in System.map
  kbuild: doc: rename LDFLAGS to KBUILD_LDFLAGS
  modpost: change elf_info->size to size_t
  modpost: remove is_vmlinux() helper
  modpost: strip .o from modname before calling new_module()
  modpost: set have_vmlinux in new_module()
  modpost: remove mod->skip struct member
  modpost: add mod->is_vmlinux struct member
  modpost: remove is_vmlinux() call in check_for_{gpl_usage,unused}()
  modpost: remove mod->is_dot_o struct member
  modpost: move -d option in scripts/Makefile.modpost
  modpost: remove -s option
  modpost: remove get_next_text() and make {grab,release_}file static
  modpost: use read_text_file() and get_line() for reading text files
  modpost: avoid false-positive file open error
  modpost: fix potential mmap'ed file overrun in get_src_version()
  modpost: add read_text_file() and get_line() helpers
  modpost: do not call get_modinfo() for vmlinux(.o)
  ...

21 files changed, 483 insertions, 454 deletions

diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index 6cabf20ce66a..0c3dc983439b 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -16,7 +16,7 @@ pound := \#
 dot-target = $(dir $@).$(notdir $@)
 
 ###
-# The temporary file to save gcc -MD generated dependencies must not
+# The temporary file to save gcc -MMD generated dependencies must not
 # contain a comma
 depfile = $(subst $(comma),_,$(dot-target).d)
 
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 9fcbfac15d1d..2e8810b7e5ed 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -50,6 +50,12 @@ ifneq ($(hostprogs)$(hostcxxlibs-y)$(hostcxxlibs-m),)
 include scripts/Makefile.host
 endif
 
+# Do not include userprogs rules unless needed.
+userprogs := $(sort $(userprogs))
+ifneq ($(userprogs),)
+include scripts/Makefile.userprogs
+endif
+
 ifndef obj
 $(warning kbuild: Makefile.build is included improperly)
 endif
@@ -63,19 +69,27 @@ endif
 
 # ===========================================================================
 
+# subdir-builtin and subdir-modorder may contain duplications. Use $(sort ...)
+subdir-builtin := $(sort $(filter %/built-in.a, $(real-obj-y)))
+subdir-modorder := $(sort $(filter %/modules.order, $(obj-m)))
+
+targets-for-builtin := $(extra-y)
+
 ifneq ($(strip $(lib-y) $(lib-m) $(lib-)),)
-lib-target := $(obj)/lib.a
+targets-for-builtin += $(obj)/lib.a
 endif
 
 ifdef need-builtin
-builtin-target := $(obj)/built-in.a
+targets-for-builtin += $(obj)/built-in.a
 endif
 
-ifeq ($(CONFIG_MODULES)$(need-modorder),y1)
-modorder-target := $(obj)/modules.order
+targets-for-modules := $(patsubst %.o, %.mod, $(filter %.o, $(obj-m)))
+
+ifdef need-modorder
+targets-for-modules += $(obj)/modules.order
 endif
 
-mod-targets := $(patsubst %.o, %.mod, $(obj-m))
+targets += $(targets-for-builtin) $(targets-for-modules)
 
 # Linus' kernel sanity checking tool
 ifeq ($(KBUILD_CHECKSRC),1)
@@ -274,8 +288,6 @@ cmd_mod = { \
 $(obj)/%.mod: $(obj)/%.o FORCE
 	$(call if_changed,mod)
 
-targets += $(mod-targets)
-
 quiet_cmd_cc_lst_c = MKLST   $@
       cmd_cc_lst_c = $(CC) $(c_flags) -g -c -o $*.o $< && \
 		     $(CONFIG_SHELL) $(srctree)/scripts/makelst $*.o \
@@ -348,8 +360,9 @@ endif
 $(obj)/%.o: $(src)/%.S $(objtool_dep) FORCE
 	$(call if_changed_rule,as_o_S)
 
-targets += $(filter-out $(subdir-obj-y), $(real-obj-y)) $(real-obj-m) $(lib-y)
-targets += $(extra-y) $(always-y) $(MAKECMDGOALS)
+targets += $(filter-out $(subdir-builtin), $(real-obj-y))
+targets += $(filter-out $(subdir-modorder), $(real-obj-m))
+targets += $(lib-y) $(always-y) $(MAKECMDGOALS)
 
 # Linker scripts preprocessor (.lds.S -> .lds)
 # ---------------------------------------------------------------------------
@@ -373,44 +386,40 @@ $(obj)/%.asn1.c $(obj)/%.asn1.h: $(src)/%.asn1 $(objtree)/scripts/asn1_compiler
 # ---------------------------------------------------------------------------
 
 # To build objects in subdirs, we need to descend into the directories
-$(obj)/%/built-in.a: $(obj)/% ;
+$(subdir-builtin): $(obj)/%/built-in.a: $(obj)/% ;
+$(subdir-modorder): $(obj)/%/modules.order: $(obj)/% ;
 
 #
 # Rule to compile a set of .o files into one .a file (without symbol table)
 #
-ifdef builtin-target
 
 quiet_cmd_ar_builtin = AR      $@
       cmd_ar_builtin = rm -f $@; $(AR) cDPrST $@ $(real-prereqs)
 
-$(builtin-target): $(real-obj-y) FORCE
+$(obj)/built-in.a: $(real-obj-y) FORCE
 	$(call if_changed,ar_builtin)
 
-targets += $(builtin-target)
-endif # builtin-target
-
 #
 # Rule to create modules.order file
 #
 # Create commands to either record .ko file or cat modules.order from
 # a subdirectory
-$(modorder-target): $(subdir-ym) FORCE
-	$(Q){ $(foreach m, $(modorder), \
-	$(if $(filter %/modules.order, $m), cat $m, echo $m);) :; } \
+# Add $(obj-m) as the prerequisite to avoid updating the timestamp of
+# modules.order unless contained modules are updated.
+
+cmd_modules_order = { $(foreach m, $(real-prereqs), \
+	$(if $(filter %/modules.order, $m), cat $m, echo $(patsubst %.o,%.ko,$m));) :; } \
 	| $(AWK) '!x[$$0]++' - > $@
 
+$(obj)/modules.order: $(obj-m) FORCE
+	$(call if_changed,modules_order)
+
 #
 # Rule to compile a set of .o files into one .a file (with symbol table)
 #
-ifdef lib-target
-
-$(lib-target): $(lib-y) FORCE
+$(obj)/lib.a: $(lib-y) FORCE
 	$(call if_changed,ar)
 
-targets += $(lib-target)
-
-endif
-
 # NOTE:
 # Do not replace $(filter %.o,^) with $(real-prereqs). When a single object
 # module is turned into a multi object module, $^ will contain header file
@@ -473,8 +482,8 @@ endif
 
 else
 
-__build: $(if $(KBUILD_BUILTIN),$(builtin-target) $(lib-target) $(extra-y)) \
-	 $(if $(KBUILD_MODULES),$(obj-m) $(mod-targets) $(modorder-target)) \
+__build: $(if $(KBUILD_BUILTIN), $(targets-for-builtin)) \
+	 $(if $(KBUILD_MODULES), $(targets-for-modules)) \
 	 $(subdir-ym) $(always-y)
 	@:
 
@@ -487,8 +496,8 @@ PHONY += $(subdir-ym)
 $(subdir-ym):
 	$(Q)$(MAKE) $(build)=$@ \
 	$(if $(filter $@/, $(KBUILD_SINGLE_TARGETS)),single-build=) \
-	need-builtin=$(if $(filter $@/built-in.a, $(subdir-obj-y)),1) \
-	need-modorder=$(if $(need-modorder),$(if $(filter $@/modules.order, $(modorder)),1))
+	need-builtin=$(if $(filter $@/built-in.a, $(subdir-builtin)),1) \
+	need-modorder=$(if $(filter $@/modules.order, $(subdir-modorder)),1)
 
 # Add FORCE to the prequisites of a target to force it to be always rebuilt.
 # ---------------------------------------------------------------------------
diff --git a/scripts/Makefile.clean b/scripts/Makefile.clean
index 075f0cc2d8d7..e2c76122319d 100644
--- a/scripts/Makefile.clean
+++ b/scripts/Makefile.clean
@@ -29,7 +29,7 @@ subdir-ymn	:= $(addprefix $(obj)/,$(subdir-ymn))
 
 __clean-files	:= $(extra-y) $(extra-m) $(extra-)       \
 		   $(always) $(always-y) $(always-m) $(always-) $(targets) $(clean-files)   \
-		   $(hostprogs) $(hostprogs-y) $(hostprogs-m) $(hostprogs-) \
+		   $(hostprogs) $(hostprogs-y) $(hostprogs-m) $(hostprogs-) $(userprogs) \
 		   $(hostcxxlibs-y) $(hostcxxlibs-m)
 
 __clean-files   := $(filter-out $(no-clean-files), $(__clean-files))
diff --git a/scripts/Makefile.host b/scripts/Makefile.host
index 2045855d0b75..c8a4a033dc3e 100644
--- a/scripts/Makefile.host
+++ b/scripts/Makefile.host
@@ -88,8 +88,8 @@ _hostcxx_flags += -I $(objtree)/$(obj)
 endif
 endif
 
-hostc_flags    = -Wp,-MD,$(depfile) $(_hostc_flags)
-hostcxx_flags  = -Wp,-MD,$(depfile) $(_hostcxx_flags)
+hostc_flags    = -Wp,-MMD,$(depfile) $(_hostc_flags)
+hostcxx_flags  = -Wp,-MMD,$(depfile) $(_hostcxx_flags)
 
 #####
 # Compile programs on the host
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 4b799737722c..127f2a7e3ced 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -4,8 +4,18 @@ asflags-y  += $(EXTRA_AFLAGS)
 ccflags-y  += $(EXTRA_CFLAGS)
 cppflags-y += $(EXTRA_CPPFLAGS)
 ldflags-y  += $(EXTRA_LDFLAGS)
+ifneq ($(always),)
+$(warning 'always' is deprecated. Please use 'always-y' instead)
 always-y   += $(always)
-hostprogs  += $(hostprogs-y) $(hostprogs-m)
+endif
+ifneq ($(hostprogs-y),)
+$(warning 'hostprogs-y' is deprecated. Please use 'hostprogs' instead)
+hostprogs  += $(hostprogs-y)
+endif
+ifneq ($(hostprogs-m),)
+$(warning 'hostprogs-m' is deprecated. Please use 'hostprogs' instead)
+hostprogs  += $(hostprogs-m)
+endif
 
 # flags that take effect in current and sub directories
 KBUILD_AFLAGS += $(subdir-asflags-y)
@@ -22,40 +32,35 @@ obj-m := $(filter-out $(obj-y),$(obj-m))
 # Filter out objects already built-in
 lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m)))
 
-# Determine modorder.
-# Unfortunately, we don't have information about ordering between -y
-# and -m subdirs.  Just put -y's first.
-modorder	:= $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko))
+# Subdirectories we need to descend into
+subdir-ym := $(sort $(subdir-y) $(subdir-m) \
+			$(patsubst %/,%, $(filter %/, $(obj-y) $(obj-m))))
+
+# Handle objects in subdirs:
+# - If we encounter foo/ in $(obj-y), replace it by foo/built-in.a and
+#   foo/modules.order
+# - If we encounter foo/ in $(obj-m), replace it by foo/modules.order
+#
+# Generate modules.order to determine modorder. Unfortunately, we don't have
+# information about ordering between -y and -m subdirs. Just put -y's first.
+
+ifdef need-modorder
+obj-m := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m))
+else
+obj-m := $(filter-out %/, $(obj-m))
+endif
 
-# Handle objects in subdirs
-# ---------------------------------------------------------------------------
-# o if we encounter foo/ in $(obj-y), replace it by foo/built-in.a
-#   and add the directory to the list of dirs to descend into: $(subdir-y)
-# o if we encounter foo/ in $(obj-m), remove it from $(obj-m)
-#   and add the directory to the list of dirs to descend into: $(subdir-m)
-__subdir-y	:= $(patsubst %/,%,$(filter %/, $(obj-y)))
-subdir-y	+= $(__subdir-y)
-__subdir-m	:= $(patsubst %/,%,$(filter %/, $(obj-m)))
-subdir-m	+= $(__subdir-m)
 ifdef need-builtin
 obj-y		:= $(patsubst %/, %/built-in.a, $(obj-y))
 else
 obj-y		:= $(filter-out %/, $(obj-y))
 endif
-obj-m		:= $(filter-out %/, $(obj-m))
-
-# Subdirectories we need to descend into
-subdir-ym	:= $(sort $(subdir-y) $(subdir-m))
 
 # If $(foo-objs), $(foo-y), $(foo-m), or $(foo-) exists, foo.o is a composite object
 multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-))), $(m))))
 multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)) $($(m:.o=-))), $(m))))
 multi-used   := $(multi-used-y) $(multi-used-m)
 
-# $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
-# tell kbuild to descend
-subdir-obj-y := $(filter %/built-in.a, $(obj-y))
-
 # Replace multi-part objects by their individual parts,
 # including built-in.a from subdirectories
 real-obj-y := $(foreach m, $(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
@@ -78,10 +83,8 @@ endif
 extra-y		:= $(addprefix $(obj)/,$(extra-y))
 always-y	:= $(addprefix $(obj)/,$(always-y))
 targets		:= $(addprefix $(obj)/,$(targets))
-modorder	:= $(addprefix $(obj)/,$(modorder))
 obj-m		:= $(addprefix $(obj)/,$(obj-m))
 lib-y		:= $(addprefix $(obj)/,$(lib-y))
-subdir-obj-y	:= $(addprefix $(obj)/,$(subdir-obj-y))
 real-obj-y	:= $(addprefix $(obj)/,$(real-obj-y))
 real-obj-m	:= $(addprefix $(obj)/,$(real-obj-m))
 multi-used-m	:= $(addprefix $(obj)/,$(multi-used-m))
@@ -171,22 +174,22 @@ modkern_aflags = $(if $(part-of-module),				\
 			$(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE),	\
 			$(KBUILD_AFLAGS_KERNEL) $(AFLAGS_KERNEL))
 
-c_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE)     \
+c_flags        = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE)     \
 		 -include $(srctree)/include/linux/compiler_types.h       \
 		 $(_c_flags) $(modkern_cflags)                           \
 		 $(basename_flags) $(modname_flags)
 
-a_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE)     \
+a_flags        = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE)     \
 		 $(_a_flags) $(modkern_aflags)
 
-cpp_flags      = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE)     \
+cpp_flags      = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE)     \
 		 $(_cpp_flags)
 
 ld_flags       = $(KBUILD_LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F))
 
 DTC_INCLUDE    := $(srctree)/scripts/dtc/include-prefixes
 
-dtc_cpp_flags  = -Wp,-MD,$(depfile).pre.tmp -nostdinc                    \
+dtc_cpp_flags  = -Wp,-MMD,$(depfile).pre.tmp -nostdinc                    \
 		 $(addprefix -I,$(DTC_INCLUDE))                          \
 		 -undef -D__DTS__
 
@@ -241,7 +244,7 @@ cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
 # ---------------------------------------------------------------------------
 
 quiet_cmd_gzip = GZIP    $@
-      cmd_gzip = cat $(real-prereqs) | gzip -n -f -9 > $@
+      cmd_gzip = cat $(real-prereqs) | $(_GZIP) -n -f -9 > $@
 
 # DTC
 # ---------------------------------------------------------------------------
@@ -287,13 +290,13 @@ $(obj)/%.dtb.S: $(obj)/%.dtb FORCE
 quiet_cmd_dtc = DTC     $@
 cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
 	$(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
-	$(DTC) -O $(2) -o $@ -b 0 \
+	$(DTC) -O $(patsubst .%,%,$(suffix $@)) -o $@ -b 0 \
 		$(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \
 		-d $(depfile).dtc.tmp $(dtc-tmp) ; \
 	cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
 
 $(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE
-	$(call if_changed_dep,dtc,dtb)
+	$(call if_changed_dep,dtc)
 
 DT_CHECKER ?= dt-validate
 DT_BINDING_DIR := Documentation/devicetree/bindings
@@ -304,7 +307,7 @@ quiet_cmd_dtb_check =	CHECK   $@
       cmd_dtb_check =	$(DT_CHECKER) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@
 
 define rule_dtc
-	$(call cmd_and_fixdep,dtc,yaml)
+	$(call cmd_and_fixdep,dtc)
 	$(call cmd,dtb_check)
 endef
 
@@ -334,19 +337,19 @@ printf "%08x\n" $$dec_size |						\
 )
 
 quiet_cmd_bzip2 = BZIP2   $@
-      cmd_bzip2 = { cat $(real-prereqs) | bzip2 -9; $(size_append); } > $@
+      cmd_bzip2 = { cat $(real-prereqs) | $(_BZIP2) -9; $(size_append); } > $@
 
 # Lzma
 # ---------------------------------------------------------------------------
 
 quiet_cmd_lzma = LZMA    $@
-      cmd_lzma = { cat $(real-prereqs) | lzma -9; $(size_append); } > $@
+      cmd_lzma = { cat $(real-prereqs) | $(LZMA) -9; $(size_append); } > $@
 
 quiet_cmd_lzo = LZO     $@
-      cmd_lzo = { cat $(real-prereqs) | lzop -9; $(size_append); } > $@
+      cmd_lzo = { cat $(real-prereqs) | $(_LZOP) -9; $(size_append); } > $@
 
 quiet_cmd_lz4 = LZ4     $@
-      cmd_lz4 = { cat $(real-prereqs) | lz4c -l -c1 stdin stdout; \
+      cmd_lz4 = { cat $(real-prereqs) | $(LZ4) -l -c1 stdin stdout; \
                   $(size_append); } > $@
 
 # U-Boot mkimage
@@ -393,7 +396,7 @@ quiet_cmd_xzkern = XZKERN  $@
                      $(size_append); } > $@
 
 quiet_cmd_xzmisc = XZMISC  $@
-      cmd_xzmisc = cat $(real-prereqs) | xz --check=crc32 --lzma2=dict=1MiB > $@
+      cmd_xzmisc = cat $(real-prereqs) | $(XZ) --check=crc32 --lzma2=dict=1MiB > $@
 
 # ASM offsets
 # ---------------------------------------------------------------------------
diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
index 957eed6a17a5..3651cbf6ad49 100644
--- a/scripts/Makefile.modpost
+++ b/scripts/Makefile.modpost
@@ -43,34 +43,30 @@ __modpost:
 include include/config/auto.conf
 include scripts/Kbuild.include
 
-kernelsymfile := $(objtree)/Module.symvers
-modulesymfile := $(firstword $(KBUILD_EXTMOD))/Module.symvers
-
 MODPOST = scripts/mod/modpost								\
 	$(if $(CONFIG_MODVERSIONS),-m)							\
 	$(if $(CONFIG_MODULE_SRCVERSION_ALL),-a)					\
-	$(if $(KBUILD_EXTMOD),-i,-o) $(kernelsymfile)					\
-	$(if $(KBUILD_EXTMOD),$(addprefix -e ,$(KBUILD_EXTRA_SYMBOLS)))			\
-	$(if $(KBUILD_EXTMOD),-o $(modulesymfile))					\
 	$(if $(CONFIG_SECTION_MISMATCH_WARN_ONLY),,-E)					\
-	$(if $(CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS)$(KBUILD_NSDEPS),-N) 	\
-	$(if $(KBUILD_MODPOST_WARN),-w)
+	$(if $(KBUILD_MODPOST_WARN),-w) \
+	-o $@
 
 ifdef MODPOST_VMLINUX
 
-quiet_cmd_modpost = MODPOST vmlinux.o
-      cmd_modpost = $(MODPOST) vmlinux.o
+quiet_cmd_modpost = MODPOST $@
+      cmd_modpost = $(MODPOST) $<
 
-__modpost:
+vmlinux.symvers: vmlinux.o
 	$(call cmd,modpost)
 
-else
+__modpost: vmlinux.symvers
 
-MODPOST += $(subst -i,-n,$(filter -i,$(MAKEFLAGS))) -s -T - \
-	$(if $(KBUILD_NSDEPS),-d $(MODULES_NSDEPS))
+else
 
 ifeq ($(KBUILD_EXTMOD),)
-MODPOST += $(wildcard vmlinux)
+
+input-symdump := vmlinux.symvers
+output-symdump := Module.symvers
+
 else
 
 # set src + obj - they may be used in the modules's Makefile
@@ -80,22 +76,57 @@ src := $(obj)
 # Include the module's Makefile to find KBUILD_EXTRA_SYMBOLS
 include $(if $(wildcard $(KBUILD_EXTMOD)/Kbuild), \
              $(KBUILD_EXTMOD)/Kbuild, $(KBUILD_EXTMOD)/Makefile)
+
+# modpost option for external modules
+MODPOST += -e
+
+input-symdump := Module.symvers $(KBUILD_EXTRA_SYMBOLS)
+output-symdump := $(KBUILD_EXTMOD)/Module.symvers
+
+endif
+
+# modpost options for modules (both in-kernel and external)
+MODPOST += \
+	$(addprefix -i ,$(wildcard $(input-symdump))) \
+	$(if $(KBUILD_NSDEPS),-d $(MODULES_NSDEPS)) \
+	$(if $(CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS)$(KBUILD_NSDEPS),-N)
+
+# 'make -i -k' ignores compile errors, and builds as many modules as possible.
+ifneq ($(findstring i,$(filter-out --%,$(MAKEFLAGS))),)
+MODPOST += -n
 endif
 
-# find all modules listed in modules.order
-modules := $(sort $(shell cat $(MODORDER)))
+# Clear VPATH to not search for *.symvers in $(srctree). Check only $(objtree).
+VPATH :=
+$(input-symdump):
+	@echo >&2 'WARNING: Symbol version dump "$@" is missing.'
+	@echo >&2 '         Modules may not have dependencies or modversions.'
 
-# Read out modules.order instead of expanding $(modules) to pass in modpost.
+# Read out modules.order to pass in modpost.
 # Otherwise, allmodconfig would fail with "Argument list too long".
-quiet_cmd_modpost = MODPOST $(words $(modules)) modules
-      cmd_modpost = sed 's/ko$$/o/' $(MODORDER) | $(MODPOST)
+quiet_cmd_modpost = MODPOST $@
+      cmd_modpost = sed 's/ko$$/o/' $< | $(MODPOST) -T -
 
-__modpost:
-	$(call cmd,modpost)
+$(output-symdump): $(MODORDER) $(input-symdump) FORCE
+	$(call if_changed,modpost)
+
+targets += $(output-symdump)
+
+__modpost: $(output-symdump)
 ifneq ($(KBUILD_MODPOST_NOFINAL),1)
 	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modfinal
 endif
 
+PHONY += FORCE
+FORCE:
+
+existing-targets := $(wildcard $(sort $(targets)))
+
+-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
+
+PHONY += FORCE
+FORCE:
+
 endif
 
 .PHONY: $(PHONY)
diff --git a/scripts/Makefile.package b/scripts/Makefile.package
index 02135d2671a6..b2b6153af63a 100644
--- a/scripts/Makefile.package
+++ b/scripts/Makefile.package
@@ -45,7 +45,7 @@ if test "$(objtree)" != "$(srctree)"; then \
 	false; \
 fi ; \
 $(srctree)/scripts/setlocalversion --save-scmversion; \
-tar -cz $(RCS_TAR_IGNORE) -f $(2).tar.gz \
+tar -I $(_GZIP) -c $(RCS_TAR_IGNORE) -f $(2).tar.gz \
 	--transform 's:^:$(2)/:S' $(TAR_CONTENT) $(3); \
 rm -f $(objtree)/.scmversion
 
@@ -127,9 +127,9 @@ util/PERF-VERSION-GEN $(CURDIR)/$(perf-tar)/);              \
 tar rf $(perf-tar).tar $(perf-tar)/HEAD $(perf-tar)/PERF-VERSION-FILE; \
 rm -r $(perf-tar);                                                  \
 $(if $(findstring tar-src,$@),,                                     \
-$(if $(findstring bz2,$@),bzip2,                                    \
-$(if $(findstring gz,$@),gzip,                                      \
-$(if $(findstring xz,$@),xz,                                        \
+$(if $(findstring bz2,$@),$(_BZIP2),                                 \
+$(if $(findstring gz,$@),$(_GZIP),                                  \
+$(if $(findstring xz,$@),$(XZ),                                     \
 $(error unknown target $@))))                                       \
 	-f -9 $(perf-tar).tar)
 
diff --git a/scripts/Makefile.userprogs b/scripts/Makefile.userprogs
new file mode 100644
index 000000000000..fb415297337a
--- /dev/null
+++ b/scripts/Makefile.userprogs
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Build userspace programs for the target system
+#
+
+# Executables compiled from a single .c file
+user-csingle	:= $(foreach m, $(userprogs), $(if $($(m)-objs),,$(m)))
+
+# Executables linked based on several .o files
+user-cmulti	:= $(foreach m, $(userprogs), $(if $($(m)-objs),$(m)))
+
+# Objects compiled from .c files
+user-cobjs	:= $(sort $(foreach m, $(userprogs), $($(m)-objs)))
+
+user-csingle	:= $(addprefix $(obj)/, $(user-csingle))
+user-cmulti	:= $(addprefix $(obj)/, $(user-cmulti))
+user-cobjs	:= $(addprefix $(obj)/, $(user-cobjs))
+
+user_ccflags	= -Wp,-MMD,$(depfile) $(KBUILD_USERCFLAGS) $(userccflags) \
+			$($(target-stem)-userccflags)
+user_ldflags	= $(KBUILD_USERLDFLAGS) $(userldflags) $($(target-stem)-userldflags)
+
+# Create an executable from a single .c file
+quiet_cmd_user_cc_c = CC [U]  $@
+      cmd_user_cc_c = $(CC) $(user_ccflags) $(user_ldflags) -o $@ $< \
+		      $($(target-stem)-userldlibs)
+$(user-csingle): $(obj)/%: $(src)/%.c FORCE
+	$(call if_changed_dep,user_cc_c)
+
+# Link an executable based on list of .o files
+quiet_cmd_user_ld = LD [U]  $@
+      cmd_user_ld = $(CC) $(user_ldflags) -o $@ \
+		    $(addprefix $(obj)/, $($(target-stem)-objs)) \
+		    $($(target-stem)-userldlibs)
+$(user-cmulti): FORCE
+	$(call if_changed,user_ld)
+$(call multi_depend, $(user-cmulti), , -objs)
+
+# Create .o file from a .c file
+quiet_cmd_user_cc_o_c = CC [U]  $@
+      cmd_user_cc_o_c = $(CC) $(user_ccflags) -c -o $@ $<
+$(user-cobjs): $(obj)/%.o: $(src)/%.c FORCE
+	$(call if_changed_dep,user_cc_o_c)
+
+targets += $(user-csingle) $(user-cmulti) $(user-cobjs)
diff --git a/scripts/basic/fixdep.c b/scripts/basic/fixdep.c
index 877ca2c88246..d98540552941 100644
--- a/scripts/basic/fixdep.c
+++ b/scripts/basic/fixdep.c
@@ -160,7 +160,7 @@ struct item {
 	struct item	*next;
 	unsigned int	len;
 	unsigned int	hash;
-	char		name[0];
+	char		name[];
 };
 
 #define HASHSZ 256
diff --git a/scripts/checkstack.pl b/scripts/checkstack.pl
index 371bd17a4983..d2c38584ece6 100755
--- a/scripts/checkstack.pl
+++ b/scripts/checkstack.pl
@@ -34,8 +34,10 @@ use strict;
 # $& (whole re) matches the complete objdump line with the stack growth
 # $1 (first bracket) matches the dynamic amount of the stack growth
 #
+# $sub: subroutine for special handling to check stack usage.
+#
 # use anything else and feel the pain ;)
-my (@stack, $re, $dre, $x, $xs, $funcre);
+my (@stack, $re, $dre, $sub, $x, $xs, $funcre, $min_stack);
 {
 	my $arch = shift;
 	if ($arch eq "") {
@@ -43,6 +45,11 @@ my (@stack, $re, $dre, $x, $xs, $funcre);
 		chomp($arch);
 	}
 
+	$min_stack = shift;
+	if ($min_stack eq "" || $min_stack !~ /^\d+$/) {
+		$min_stack = 100;
+	}
+
 	$x	= "[0-9a-f]";	# hex character
 	$xs	= "[0-9a-f ]";	# hex character or space
 	$funcre = qr/^$x* <(.*)>:$/;
@@ -53,7 +60,8 @@ my (@stack, $re, $dre, $x, $xs, $funcre);
 		$dre = qr/^.*sub.*sp, sp, #(0x$x{1,8})/o;
 	} elsif ($arch eq 'arm') {
 		#c0008ffc:	e24dd064	sub	sp, sp, #100	; 0x64
-		$re = qr/.*sub.*sp, sp, #(([0-9]{2}|[3-9])[0-9]{2})/o;
+		$re = qr/.*sub.*sp, sp, #([0-9]{1,4})/o;
+		$sub = \&arm_push_handling;
 	} elsif ($arch =~ /^x86(_64)?$/ || $arch =~ /^i[3456]86$/) {
 		#c0105234:       81 ec ac 05 00 00       sub    $0x5ac,%esp
 		# or
@@ -107,13 +115,50 @@ my (@stack, $re, $dre, $x, $xs, $funcre);
 }
 
 #
+# To count stack usage of push {*, fp, ip, lr, pc} instruction in ARM,
+# if FRAME POINTER is enabled.
+# e.g. c01f0d48: e92ddff0 push {r4, r5, r6, r7, r8, r9, sl, fp, ip, lr, pc}
+#
+sub arm_push_handling {
+	my $regex = qr/.*push.*fp, ip, lr, pc}/o;
+	my $size = 0;
+	my $line_arg = shift;
+
+	if ($line_arg =~ m/$regex/) {
+		$size = $line_arg =~ tr/,//;
+		$size = ($size + 1) * 4;
+	}
+
+	return $size;
+}
+
+#
 # main()
 #
-my ($func, $file, $lastslash);
+my ($func, $file, $lastslash, $total_size, $addr, $intro);
+
+$total_size = 0;
 
 while (my $line = <STDIN>) {
 	if ($line =~ m/$funcre/) {
 		$func = $1;
+		next if $line !~ m/^($xs*)/;
+		if ($total_size > $min_stack) {
+			push @stack, "$intro$total_size\n";
+		}
+
+		$addr = $1;
+		$addr =~ s/ /0/g;
+		$addr = "0x$addr";
+
+		$intro = "$addr $func [$file]:";
+		my $padlen = 56 - length($intro);
+		while ($padlen > 0) {
+			$intro .= '	';
+			$padlen -= 8;
+		}
+
+		$total_size = 0;
 	}
 	elsif ($line =~ m/(.*):\s*file format/) {
 		$file = $1;
@@ -134,37 +179,23 @@ while (my $line = <STDIN>) {
 		}
 		next if ($size > 0x10000000);
 
-		next if $line !~ m/^($xs*)/;
-		my $addr = $1;
-		$addr =~ s/ /0/g;
-		$addr = "0x$addr";
-
-		my $intro = "$addr $func [$file]:";
-		my $padlen = 56 - length($intro);
-		while ($padlen > 0) {
-			$intro .= '	';
-			$padlen -= 8;
-		}
-		next if ($size < 100);
-		push @stack, "$intro$size\n";
+		$total_size += $size;
 	}
 	elsif (defined $dre && $line =~ m/$dre/) {
-		my $size = "Dynamic ($1)";
+		my $size = $1;
 
-		next if $line !~ m/^($xs*)/;
-		my $addr = $1;
-		$addr =~ s/ /0/g;
-		$addr = "0x$addr";
+		$size = hex($size) if ($size =~ /^0x/);
+		$total_size += $size;
+	}
+	elsif (defined $sub) {
+		my $size = &$sub($line);
 
-		my $intro = "$addr $func [$file]:";
-		my $padlen = 56 - length($intro);
-		while ($padlen > 0) {
-			$intro .= '	';
-			$padlen -= 8;
-		}
-		push @stack, "$intro$size\n";
+		$total_size += $size;
 	}
 }
+if ($total_size > $min_stack) {
+	push @stack, "$intro$total_size\n";
+}
 
 # Sort output by size (last field)
 print sort { ($b =~ /:\t*(\d+)$/)[0] <=> ($a =~ /:\t*(\d+)$/)[0] } @stack;
diff --git a/scripts/gcc-plugins/Makefile b/scripts/gcc-plugins/Makefile
index 80f354289eeb..4014ba7e2fbd 100644
--- a/scripts/gcc-plugins/Makefile
+++ b/scripts/gcc-plugins/Makefile
@@ -14,7 +14,7 @@ $(objtree)/$(obj)/randomize_layout_seed.h: FORCE
 	$(call if_changed,create_randomize_layout_seed)
 targets = randomize_layout_seed.h randomize_layout_hash.h
 
-hostcxxlibs-y := $(foreach p,$(GCC_PLUGIN),$(if $(findstring /,$(p)),,$(p)))
+hostcxxlibs-y := $(GCC_PLUGIN)
 always-y := $(hostcxxlibs-y)
 
 $(foreach p,$(hostcxxlibs-y:%.so=%),$(eval $(p)-objs := $(p).o))
diff --git a/scripts/headers_install.sh b/scripts/headers_install.sh
index a07668a5c36b..94a833597a88 100755
--- a/scripts/headers_install.sh
+++ b/scripts/headers_install.sh
@@ -64,7 +64,7 @@ configs=$(sed -e '
 	d
 ' $OUTFILE)
 
-# The entries in the following list are not warned.
+# The entries in the following list do not result in an error.
 # Please do not add a new entry. This list is only for existing ones.
 # The list will be reduced gradually, and deleted eventually. (hopefully)
 #
@@ -98,18 +98,19 @@ include/uapi/linux/raw.h:CONFIG_MAX_RAW_DEVS
 
 for c in $configs
 do
-	warn=1
+	leak_error=1
 
 	for ignore in $config_leak_ignores
 	do
 		if echo "$INFILE:$c" | grep -q "$ignore$"; then
-			warn=
+			leak_error=
 			break
 		fi
 	done
 
-	if [ "$warn" = 1 ]; then
-		echo "warning: $INFILE: leak $c to user-space" >&2
+	if [ "$leak_error" = 1 ]; then
+		echo "error: $INFILE: leak $c to user-space" >&2
+		exit 1
 	fi
 done
 
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index 3adef49250af..57cb14bd8925 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -241,8 +241,6 @@ on_signals()
 }
 trap on_signals HUP INT QUIT TERM
 
-#
-#
 # Use "make V=1" to debug this script
 case "${KBUILD_VERBOSE}" in
 *1*)
diff --git a/scripts/mkcompile_h b/scripts/mkcompile_h
index 5b80a4699740..baf3ab8d9d49 100755
--- a/scripts/mkcompile_h
+++ b/scripts/mkcompile_h
@@ -6,7 +6,7 @@ ARCH=$2
 SMP=$3
 PREEMPT=$4
 PREEMPT_RT=$5
-CC=$6
+CC_VERSION="$6"
 LD=$7
 
 vecho() { [ "${quiet}" = "silent_" ] || echo "$@" ; }
@@ -62,7 +62,6 @@ UTS_VERSION="$(echo $UTS_VERSION $CONFIG_FLAGS $TIMESTAMP | cut -b -$UTS_LEN)"
   printf '#define LINUX_COMPILE_BY "%s"\n' "$LINUX_COMPILE_BY"
   echo \#define LINUX_COMPILE_HOST \"$LINUX_COMPILE_HOST\"
 
-  CC_VERSION=$($CC -v 2>&1 | grep ' version ' | sed 's/[[:space:]]*$//')
   LD_VERSION=$($LD -v | head -n1 | sed 's/(compatible with [^)]*)//' \
 		      | sed 's/[[:space:]]*$//')
   printf '#define LINUX_COMPILER "%s"\n' "$CC_VERSION, $LD_VERSION"
diff --git a/scripts/mksysmap b/scripts/mksysmap
index a35acc0d0b82..9aa23d15862a 100755
--- a/scripts/mksysmap
+++ b/scripts/mksysmap
@@ -41,4 +41,4 @@
 # so we just ignore them to let readprofile continue to work.
 # (At least sparc64 has __crc_ in the middle).
 
-$NM -n $1 | grep -v '\( [aNUw] \)\|\(__crc_\)\|\( \$[adt]\)\|\( .L\)' > $2
+$NM -n $1 | grep -v '\( [aNUw] \)\|\(__crc_\)\|\( \$[adt]\)\|\( \.L\)' > $2
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 9a98af90e625..6aea65c65745 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -30,8 +30,6 @@ static int have_vmlinux = 0;
 static int all_versions = 0;
 /* If we are modposting external module set to 1 */
 static int external_module = 0;
-/* Warn about section mismatch in vmlinux if set to 1 */
-static int vmlinux_section_warnings = 1;
 /* Only warn about unresolved symbols */
 static int warn_unresolved = 0;
 /* How a symbol is exported */
@@ -90,26 +88,61 @@ static inline bool strends(const char *str, const char *postfix)
 	return strcmp(str + strlen(str) - strlen(postfix), postfix) == 0;
 }
 
-static int is_vmlinux(const char *modname)
+void *do_nofail(void *ptr, const char *expr)
 {
-	const char *myname;
+	if (!ptr)
+		fatal("Memory allocation failure: %s.\n", expr);
 
-	myname = strrchr(modname, '/');
-	if (myname)
-		myname++;
-	else
-		myname = modname;
+	return ptr;
+}
+
+char *read_text_file(const char *filename)
+{
+	struct stat st;
+	size_t nbytes;
+	int fd;
+	char *buf;
+
+	fd = open(filename, O_RDONLY);
+	if (fd < 0) {
+		perror(filename);
+		exit(1);
+	}
 
-	return (strcmp(myname, "vmlinux") == 0) ||
-	       (strcmp(myname, "vmlinux.o") == 0);
+	if (fstat(fd, &st) < 0) {
+		perror(filename);
+		exit(1);
+	}
+
+	buf = NOFAIL(malloc(st.st_size + 1));
+
+	nbytes = st.st_size;
+
+	while (nbytes) {
+		ssize_t bytes_read;
+
+		bytes_read = read(fd, buf, nbytes);
+		if (bytes_read < 0) {
+			perror(filename);
+			exit(1);
+		}
+
+		nbytes -= bytes_read;
+	}
+	buf[st.st_size] = '\0';
+
+	close(fd);
+
+	return buf;
 }
 
-void *do_nofail(void *ptr, const char *expr)
+char *get_line(char **stringp)
 {
-	if (!ptr)
-		fatal("Memory allocation failure: %s.\n", expr);
+	/* do not return the unwanted extra line at EOF */
+	if (*stringp && **stringp == '\0')
+		return NULL;
 
-	return ptr;
+	return strsep(stringp, "\n");
 }
 
 /* A list of all modules we processed */
@@ -128,24 +161,20 @@ static struct module *find_module(const char *modname)
 static struct module *new_module(const char *modname)
 {
 	struct module *mod;
-	char *p;
 
-	mod = NOFAIL(malloc(sizeof(*mod)));
+	mod = NOFAIL(malloc(sizeof(*mod) + strlen(modname) + 1));
 	memset(mod, 0, sizeof(*mod));
-	p = NOFAIL(strdup(modname));
-
-	/* strip trailing .o */
-	if (strends(p, ".o")) {
-		p[strlen(p) - 2] = '\0';
-		mod->is_dot_o = 1;
-	}
 
 	/* add to list */
-	mod->name = p;
+	strcpy(mod->name, modname);
+	mod->is_vmlinux = (strcmp(modname, "vmlinux") == 0);
 	mod->gpl_compatible = -1;
 	mod->next = modules;
 	modules = mod;
 
+	if (mod->is_vmlinux)
+		have_vmlinux = 1;
+
 	return mod;
 }
 
@@ -161,12 +190,9 @@ struct symbol {
 	int crc_valid;
 	char *namespace;
 	unsigned int weak:1;
-	unsigned int vmlinux:1;    /* 1 if symbol is defined in vmlinux */
-	unsigned int kernel:1;     /* 1 if symbol is from kernel
-				    *  (only for external modules) **/
 	unsigned int is_static:1;  /* 1 if symbol is not global */
 	enum export  export;       /* Type of export */
-	char name[0];
+	char name[];
 };
 
 static struct symbol *symbolhash[SYMBOL_HASH_SIZE];
@@ -288,29 +314,32 @@ static enum export export_no(const char *s)
 	return export_unknown;
 }
 
-static const char *sech_name(struct elf_info *elf, Elf_Shdr *sechdr)
+static void *sym_get_data_by_offset(const struct elf_info *info,
+				    unsigned int secindex, unsigned long offset)
 {
-	return (void *)elf->hdr +
-		elf->sechdrs[elf->secindex_strings].sh_offset +
-		sechdr->sh_name;
-}
+	Elf_Shdr *sechdr = &info->sechdrs[secindex];
 
-static const char *sec_name(struct elf_info *elf, int secindex)
-{
-	return sech_name(elf, &elf->sechdrs[secindex]);
+	if (info->hdr->e_type != ET_REL)
+		offset -= sechdr->sh_addr;
+
+	return (void *)info->hdr + sechdr->sh_offset + offset;
 }
 
 static void *sym_get_data(const struct elf_info *info, const Elf_Sym *sym)
 {
-	unsigned int secindex = get_secindex(info, sym);
-	Elf_Shdr *sechdr = &info->sechdrs[secindex];
-	unsigned long offset;
+	return sym_get_data_by_offset(info, get_secindex(info, sym),
+				      sym->st_value);
+}
 
-	offset = sym->st_value;
-	if (info->hdr->e_type != ET_REL)
-		offset -= sechdr->sh_addr;
+static const char *sech_name(const struct elf_info *info, Elf_Shdr *sechdr)
+{
+	return sym_get_data_by_offset(info, info->secindex_strings,
+				      sechdr->sh_name);
+}
 
-	return (void *)info->hdr + sechdr->sh_offset + offset;
+static const char *sec_name(const struct elf_info *info, int secindex)
+{
+	return sech_name(info, &info->sechdrs[secindex]);
 }
 
 #define strstarts(str, prefix) (strncmp(str, prefix, strlen(prefix)) == 0)
@@ -386,17 +415,15 @@ static struct symbol *sym_add_exported(const char *name, struct module *mod,
 
 	if (!s) {
 		s = new_symbol(name, mod, export);
-	} else if (!external_module || is_vmlinux(s->module->name) ||
+	} else if (!external_module || s->module->is_vmlinux ||
 		   s->module == mod) {
 		warn("%s: '%s' exported twice. Previous export was in %s%s\n",
 		     mod->name, name, s->module->name,
-		     is_vmlinux(s->module->name) ? "" : ".ko");
+		     s->module->is_vmlinux ? "" : ".ko");
 		return s;
 	}
 
 	s->module = mod;
-	s->vmlinux   = is_vmlinux(mod->name);
-	s->kernel    = 0;
 	s->export    = export;
 	return s;
 }
@@ -416,7 +443,7 @@ static void sym_set_crc(const char *name, unsigned int crc)
 	s->crc_valid = 1;
 }
 
-void *grab_file(const char *filename, unsigned long *size)
+static void *grab_file(const char *filename, size_t *size)
 {
 	struct stat st;
 	void *map = MAP_FAILED;
@@ -438,41 +465,7 @@ failed:
 	return map;
 }
 
-/**
-  * Return a copy of the next line in a mmap'ed file.
-  * spaces in the beginning of the line is trimmed away.
-  * Return a pointer to a static buffer.
-  **/
-char *get_next_line(unsigned long *pos, void *file, unsigned long size)
-{
-	static char line[4096];
-	int skip = 1;
-	size_t len = 0;
-	signed char *p = (signed char *)file + *pos;
-	char *s = line;
-
-	for (; *pos < size ; (*pos)++) {
-		if (skip && isspace(*p)) {
-			p++;
-			continue;
-		}
-		skip = 0;
-		if (*p != '\n' && (*pos < size)) {
-			len++;
-			*s++ = *p++;
-			if (len > 4095)
-				break; /* Too long, stop */
-		} else {
-			/* End of string */
-			*s = '\0';
-			return line;
-		}
-	}
-	/* End of buffer */
-	return NULL;
-}
-
-void release_file(void *file, unsigned long size)
+static void release_file(void *file, size_t size)
 {
 	munmap(file, size);
 }
@@ -528,9 +521,8 @@ static int parse_elf(struct elf_info *info, const char *filename)
 
 	/* Check if file offset is correct */
 	if (hdr->e_shoff > info->size) {
-		fatal("section header offset=%lu in file '%s' is bigger than "
-		      "filesize=%lu\n", (unsigned long)hdr->e_shoff,
-		      filename, info->size);
+		fatal("section header offset=%lu in file '%s' is bigger than filesize=%zu\n",
+		      (unsigned long)hdr->e_shoff, filename, info->size);
 		return 0;
 	}
 
@@ -683,7 +675,7 @@ static void handle_modversion(const struct module *mod,
 
 	if (sym->st_shndx == SHN_UNDEF) {
 		warn("EXPORT symbol \"%s\" [%s%s] version generation failed, symbol will not be versioned.\n",
-		     symname, mod->name, is_vmlinux(mod->name) ? "":".ko");
+		     symname, mod->name, mod->is_vmlinux ? "" : ".ko");
 		return;
 	}
 
@@ -705,8 +697,7 @@ static void handle_symbol(struct module *mod, struct elf_info *info,
 	enum export export;
 	const char *name;
 
-	if ((!is_vmlinux(mod->name) || mod->is_dot_o) &&
-	    strstarts(symname, "__ksymtab"))
+	if (strstarts(symname, "__ksymtab"))
 		export = export_from_secname(info, get_secindex(info, sym));
 	else
 		export = export_from_sec(info, get_secindex(info, sym));
@@ -1752,11 +1743,7 @@ static void check_section_mismatch(const char *modname, struct elf_info *elf,
 static unsigned int *reloc_location(struct elf_info *elf,
 				    Elf_Shdr *sechdr, Elf_Rela *r)
 {
-	Elf_Shdr *sechdrs = elf->sechdrs;
-	int section = sechdr->sh_info;
-
-	return (void *)elf->hdr + sechdrs[section].sh_offset +
-		r->r_offset;
+	return sym_get_data_by_offset(elf, sechdr->sh_info, r->r_offset);
 }
 
 static int addend_386_rel(struct elf_info *elf, Elf_Shdr *sechdr, Elf_Rela *r)
@@ -2005,34 +1992,36 @@ static void read_symbols(const char *modname)
 	if (!parse_elf(&info, modname))
 		return;
 
-	mod = new_module(modname);
-
-	/* When there's no vmlinux, don't print warnings about
-	 * unresolved symbols (since there'll be too many ;) */
-	if (is_vmlinux(modname)) {
-		have_vmlinux = 1;
-		mod->skip = 1;
-	}
-
-	license = get_modinfo(&info, "license");
-	if (!license && !is_vmlinux(modname))
-		warn("missing MODULE_LICENSE() in %s\n"
-		     "see include/linux/module.h for "
-		     "more information\n", modname);
-	while (license) {
-		if (license_is_gpl_compatible(license))
-			mod->gpl_compatible = 1;
-		else {
-			mod->gpl_compatible = 0;
-			break;
+	{
+		char *tmp;
+
+		/* strip trailing .o */
+		tmp = NOFAIL(strdup(modname));
+		tmp[strlen(tmp) - 2] = '\0';
+		mod = new_module(tmp);
+		free(tmp);
+	}
+
+	if (!mod->is_vmlinux) {
+		license = get_modinfo(&info, "license");
+		if (!license)
+			warn("missing MODULE_LICENSE() in %s\n", modname);
+		while (license) {
+			if (license_is_gpl_compatible(license))
+				mod->gpl_compatible = 1;
+			else {
+				mod->gpl_compatible = 0;
+				break;
+			}
+			license = get_next_modinfo(&info, "license", license);
 		}
-		license = get_next_modinfo(&info, "license", license);
-	}
 
-	namespace = get_modinfo(&info, "import_ns");
-	while (namespace) {
-		add_namespace(&mod->imported_namespaces, namespace);
-		namespace = get_next_modinfo(&info, "import_ns", namespace);
+		namespace = get_modinfo(&info, "import_ns");
+		while (namespace) {
+			add_namespace(&mod->imported_namespaces, namespace);
+			namespace = get_next_modinfo(&info, "import_ns",
+						     namespace);
+		}
 	}
 
 	for (sym = info.symtab_start; sym < info.symtab_stop; sym++) {
@@ -2070,16 +2059,14 @@ static void read_symbols(const char *modname)
 		}
 	}
 
-	if (!is_vmlinux(modname) || vmlinux_section_warnings)
-		check_sec_ref(mod, modname, &info);
+	check_sec_ref(mod, modname, &info);
 
-	version = get_modinfo(&info, "version");
-	if (version)
-		maybe_frob_rcs_version(modname, version, info.modinfo,
-				       version - (char *)info.hdr);
-	if (version || (all_versions && !is_vmlinux(modname)))
-		get_src_version(modname, mod->srcversion,
-				sizeof(mod->srcversion)-1);
+	if (!mod->is_vmlinux) {
+		version = get_modinfo(&info, "version");
+		if (version || all_versions)
+			get_src_version(modname, mod->srcversion,
+					sizeof(mod->srcversion) - 1);
+	}
 
 	parse_elf_finish(&info);
 
@@ -2143,20 +2130,18 @@ void buf_write(struct buffer *buf, const char *s, int len)
 
 static void check_for_gpl_usage(enum export exp, const char *m, const char *s)
 {
-	const char *e = is_vmlinux(m) ?"":".ko";
-
 	switch (exp) {
 	case export_gpl:
-		fatal("GPL-incompatible module %s%s "
-		      "uses GPL-only symbol '%s'\n", m, e, s);
+		fatal("GPL-incompatible module %s.ko uses GPL-only symbol '%s'\n",
+		      m, s);
 		break;
 	case export_unused_gpl:
-		fatal("GPL-incompatible module %s%s "
-		      "uses GPL-only symbol marked UNUSED '%s'\n", m, e, s);
+		fatal("GPL-incompatible module %s.ko uses GPL-only symbol marked UNUSED '%s'\n",
+		      m, s);
 		break;
 	case export_gpl_future:
-		warn("GPL-incompatible module %s%s "
-		      "uses future GPL-only symbol '%s'\n", m, e, s);
+		warn("GPL-incompatible module %s.ko uses future GPL-only symbol '%s'\n",
+		     m, s);
 		break;
 	case export_plain:
 	case export_unused:
@@ -2168,13 +2153,11 @@ static void check_for_gpl_usage(enum export exp, const char *m, const char *s)
 
 static void check_for_unused(enum export exp, const char *m, const char *s)
 {
-	const char *e = is_vmlinux(m) ?"":".ko";
-
 	switch (exp) {
 	case export_unused:
 	case export_unused_gpl:
-		warn("module %s%s "
-		      "uses symbol '%s' marked UNUSED\n", m, e, s);
+		warn("module %s.ko uses symbol '%s' marked UNUSED\n",
+		     m, s);
 		break;
 	default:
 		/* ignore */
@@ -2349,7 +2332,7 @@ static void add_depends(struct buffer *b, struct module *mod)
 	/* Clear ->seen flag of modules that own symbols needed by this. */
 	for (s = mod->unres; s; s = s->next)
 		if (s->module)
-			s->module->seen = is_vmlinux(s->module->name);
+			s->module->seen = s->module->is_vmlinux;
 
 	buf_printf(b, "\n");
 	buf_printf(b, "MODULE_INFO(depends, \"");
@@ -2382,6 +2365,25 @@ static void add_srcversion(struct buffer *b, struct module *mod)
 	}
 }
 
+static void write_buf(struct buffer *b, const char *fname)
+{
+	FILE *file;
+
+	file = fopen(fname, "w");
+	if (!file) {
+		perror(fname);
+		exit(1);
+	}
+	if (fwrite(b->p, 1, b->pos, file) != b->pos) {
+		perror(fname);
+		exit(1);
+	}
+	if (fclose(file) != 0) {
+		perror(fname);
+		exit(1);
+	}
+}
+
 static void write_if_changed(struct buffer *b, const char *fname)
 {
 	char *tmp;
@@ -2414,32 +2416,24 @@ static void write_if_changed(struct buffer *b, const char *fname)
  close_write:
 	fclose(file);
  write:
-	file = fopen(fname, "w");
-	if (!file) {
-		perror(fname);
-		exit(1);
-	}
-	if (fwrite(b->p, 1, b->pos, file) != b->pos) {
-		perror(fname);
-		exit(1);
-	}
-	fclose(file);
+	write_buf(b, fname);
 }
 
 /* parse Module.symvers file. line format:
  * 0x12345678<tab>symbol<tab>module<tab>export<tab>namespace
  **/
-static void read_dump(const char *fname, unsigned int kernel)
+static void read_dump(const char *fname)
 {
-	unsigned long size, pos = 0;
-	void *file = grab_file(fname, &size);
-	char *line;
+	char *buf, *pos, *line;
 
-	if (!file)
+	buf = read_text_file(fname);
+	if (!buf)
 		/* No symbol versions, silently ignore */
 		return;
 
-	while ((line = get_next_line(&pos, file, size))) {
+	pos = buf;
+
+	while ((line = get_line(&pos))) {
 		char *symname, *namespace, *modname, *d, *export;
 		unsigned int crc;
 		struct module *mod;
@@ -2463,21 +2457,18 @@ static void read_dump(const char *fname, unsigned int kernel)
 			goto fail;
 		mod = find_module(modname);
 		if (!mod) {
-			if (is_vmlinux(modname))
-				have_vmlinux = 1;
 			mod = new_module(modname);
-			mod->skip = 1;
+			mod->from_dump = 1;
 		}
 		s = sym_add_exported(symname, mod, export_no(export));
-		s->kernel    = kernel;
 		s->is_static = 0;
 		sym_set_crc(symname, crc);
 		sym_update_namespace(symname, namespace);
 	}
-	release_file(file, size);
+	free(buf);
 	return;
 fail:
-	release_file(file, size);
+	free(buf);
 	fatal("parse error in symbol dump file\n");
 }
 
@@ -2489,7 +2480,7 @@ static int dump_sym(struct symbol *sym)
 {
 	if (!external_module)
 		return 1;
-	if (sym->vmlinux || sym->kernel)
+	if (sym->module->from_dump)
 		return 0;
 	return 1;
 }
@@ -2515,7 +2506,7 @@ static void write_dump(const char *fname)
 			symbol = symbol->next;
 		}
 	}
-	write_if_changed(&buf, fname);
+	write_buf(&buf, fname);
 	free(buf.p);
 }
 
@@ -2527,7 +2518,7 @@ static void write_namespace_deps_files(const char *fname)
 
 	for (mod = modules; mod; mod = mod->next) {
 
-		if (mod->skip || !mod->missing_namespaces)
+		if (mod->from_dump || !mod->missing_namespaces)
 			continue;
 
 		buf_printf(&ns_deps_buf, "%s.ko:", mod->name);
@@ -2542,8 +2533,8 @@ static void write_namespace_deps_files(const char *fname)
 	free(ns_deps_buf.p);
 }
 
-struct ext_sym_list {
-	struct ext_sym_list *next;
+struct dump_list {
+	struct dump_list *next;
 	const char *file;
 };
 
@@ -2551,28 +2542,24 @@ int main(int argc, char **argv)
 {
 	struct module *mod;
 	struct buffer buf = { };
-	char *kernel_read = NULL;
 	char *missing_namespace_deps = NULL;
 	char *dump_write = NULL, *files_source = NULL;
 	int opt;
 	int err;
 	int n;
-	struct ext_sym_list *extsym_iter;
-	struct ext_sym_list *extsym_start = NULL;
+	struct dump_list *dump_read_start = NULL;
+	struct dump_list **dump_read_iter = &dump_read_start;
 
-	while ((opt = getopt(argc, argv, "i:e:mnsT:o:awENd:")) != -1) {
+	while ((opt = getopt(argc, argv, "ei:mnT:o:awENd:")) != -1) {
 		switch (opt) {
-		case 'i':
-			kernel_read = optarg;
-			external_module = 1;
-			break;
 		case 'e':
 			external_module = 1;
-			extsym_iter =
-			   NOFAIL(malloc(sizeof(*extsym_iter)));
-			extsym_iter->next = extsym_start;
-			extsym_iter->file = optarg;
-			extsym_start = extsym_iter;
+			break;
+		case 'i':
+			*dump_read_iter =
+				NOFAIL(calloc(1, sizeof(**dump_read_iter)));
+			(*dump_read_iter)->file = optarg;
+			dump_read_iter = &(*dump_read_iter)->next;
 			break;
 		case 'm':
 			modversions = 1;
@@ -2586,9 +2573,6 @@ int main(int argc, char **argv)
 		case 'a':
 			all_versions = 1;
 			break;
-		case 's':
-			vmlinux_section_warnings = 0;
-			break;
 		case 'T':
 			files_source = optarg;
 			break;
@@ -2609,13 +2593,13 @@ int main(int argc, char **argv)
 		}
 	}
 
-	if (kernel_read)
-		read_dump(kernel_read, 1);
-	while (extsym_start) {
-		read_dump(extsym_start->file, 0);
-		extsym_iter = extsym_start->next;
-		free(extsym_start);
-		extsym_start = extsym_iter;
+	while (dump_read_start) {
+		struct dump_list *tmp;
+
+		read_dump(dump_read_start->file);
+		tmp = dump_read_start->next;
+		free(dump_read_start);
+		dump_read_start = tmp;
 	}
 
 	while (optind < argc)
@@ -2624,12 +2608,19 @@ int main(int argc, char **argv)
 	if (files_source)
 		read_symbols_from_files(files_source);
 
+	/*
+	 * When there's no vmlinux, don't print warnings about
+	 * unresolved symbols (since there'll be too many ;)
+	 */
+	if (!have_vmlinux)
+		warn("Symbol info of vmlinux is missing. Unresolved symbol check will be entirely skipped.\n");
+
 	err = 0;
 
 	for (mod = modules; mod; mod = mod->next) {
 		char fname[PATH_MAX];
 
-		if (mod->skip)
+		if (mod->is_vmlinux || mod->from_dump)
 			continue;
 
 		buf.pos = 0;
@@ -2662,13 +2653,6 @@ int main(int argc, char **argv)
 		struct symbol *s;
 
 		for (s = symbolhash[n]; s; s = s->next) {
-			/*
-			 * Do not check "vmlinux". This avoids the same warnings
-			 * shown twice, and false-positives for ARCH=um.
-			 */
-			if (is_vmlinux(s->module->name) && !s->module->is_dot_o)
-				continue;
-
 			if (s->is_static)
 				warn("\"%s\" [%s] is a static %s\n",
 				     s->name, s->module->name,
diff --git a/scripts/mod/modpost.h b/scripts/mod/modpost.h
index 60dca9b7106b..3aa052722233 100644
--- a/scripts/mod/modpost.h
+++ b/scripts/mod/modpost.h
@@ -111,29 +111,29 @@ buf_write(struct buffer *buf, const char *s, int len);
 
 struct namespace_list {
 	struct namespace_list *next;
-	char namespace[0];
+	char namespace[];
 };
 
 struct module {
 	struct module *next;
-	const char *name;
 	int gpl_compatible;
 	struct symbol *unres;
+	int from_dump;  /* 1 if module was loaded from *.symvers */
+	int is_vmlinux;
 	int seen;
-	int skip;
 	int has_init;
 	int has_cleanup;
 	struct buffer dev_table_buf;
 	char	     srcversion[25];
-	int is_dot_o;
 	// Missing namespace dependencies
 	struct namespace_list *missing_namespaces;
 	// Actual imported namespaces
 	struct namespace_list *imported_namespaces;
+	char name[];
 };
 
 struct elf_info {
-	unsigned long size;
+	size_t size;
 	Elf_Ehdr     *hdr;
 	Elf_Shdr     *sechdrs;
 	Elf_Sym      *symtab_start;
@@ -187,16 +187,11 @@ void handle_moddevtable(struct module *mod, struct elf_info *info,
 void add_moddevtable(struct buffer *buf, struct module *mod);
 
 /* sumversion.c */
-void maybe_frob_rcs_version(const char *modfilename,
-			    char *version,
-			    void *modinfo,
-			    unsigned long modinfo_offset);
 void get_src_version(const char *modname, char sum[], unsigned sumlen);
 
 /* from modpost.c */
-void *grab_file(const char *filename, unsigned long *size);
-char* get_next_line(unsigned long *pos, void *file, unsigned long size);
-void release_file(void *file, unsigned long size);
+char *read_text_file(const char *filename);
+char *get_line(char **stringp);
 
 enum loglevel {
 	LOG_WARN,
diff --git a/scripts/mod/sumversion.c b/scripts/mod/sumversion.c
index 63062024ce0e..d587f40f1117 100644
--- a/scripts/mod/sumversion.c
+++ b/scripts/mod/sumversion.c
@@ -258,9 +258,8 @@ static int parse_file(const char *fname, struct md4_ctx *md)
 	char *file;
 	unsigned long i, len;
 
-	file = grab_file(fname, &len);
-	if (!file)
-		return 0;
+	file = read_text_file(fname);
+	len = strlen(file);
 
 	for (i = 0; i < len; i++) {
 		/* Collapse and ignore \ and CR. */
@@ -287,7 +286,7 @@ static int parse_file(const char *fname, struct md4_ctx *md)
 
 		add_char(file[i], md);
 	}
-	release_file(file, len);
+	free(file);
 	return 1;
 }
 /* Check whether the file is a static library or not */
@@ -304,9 +303,8 @@ static int is_static_library(const char *objfile)
  * to figure out source files. */
 static int parse_source_files(const char *objfile, struct md4_ctx *md)
 {
-	char *cmd, *file, *line, *dir;
+	char *cmd, *file, *line, *dir, *pos;
 	const char *base;
-	unsigned long flen, pos = 0;
 	int dirlen, ret = 0, check_files = 0;
 
 	cmd = NOFAIL(malloc(strlen(objfile) + sizeof("..cmd")));
@@ -324,14 +322,12 @@ static int parse_source_files(const char *objfile, struct md4_ctx *md)
 	strncpy(dir, objfile, dirlen);
 	dir[dirlen] = '\0';
 
-	file = grab_file(cmd, &flen);
-	if (!file) {
-		warn("could not find %s for %s\n", cmd, objfile);
-		goto out;
-	}
+	file = read_text_file(cmd);
+
+	pos = file;
 
 	/* Sum all files in the same dir or subdirs. */
-	while ((line = get_next_line(&pos, file, flen)) != NULL) {
+	while ((line = get_line(&pos))) {
 		char* p = line;
 
 		if (strncmp(line, "source_", sizeof("source_")-1) == 0) {
@@ -382,8 +378,7 @@ static int parse_source_files(const char *objfile, struct md4_ctx *md)
 	/* Everyone parsed OK */
 	ret = 1;
 out_file:
-	release_file(file, flen);
-out:
+	free(file);
 	free(dir);
 	free(cmd);
 	return ret;
@@ -392,106 +387,34 @@ out:
 /* Calc and record src checksum. */
 void get_src_version(const char *modname, char sum[], unsigned sumlen)
 {
-	void *file;
-	unsigned long len;
+	char *buf, *pos, *firstline;
 	struct md4_ctx md;
-	char *sources, *end, *fname;
+	char *fname;
 	char filelist[PATH_MAX + 1];
 
 	/* objects for a module are listed in the first line of *.mod file. */
 	snprintf(filelist, sizeof(filelist), "%.*smod",
 		 (int)strlen(modname) - 1, modname);
 
-	file = grab_file(filelist, &len);
-	if (!file)
-		/* not a module or .mod file missing - ignore */
-		return;
+	buf = read_text_file(filelist);
 
-	sources = file;
-
-	end = strchr(sources, '\n');
-	if (!end) {
+	pos = buf;
+	firstline = get_line(&pos);
+	if (!firstline) {
 		warn("bad ending versions file for %s\n", modname);
-		goto release;
+		goto free;
 	}
-	*end = '\0';
 
 	md4_init(&md);
-	while ((fname = strsep(&sources, " ")) != NULL) {
+	while ((fname = strsep(&firstline, " "))) {
 		if (!*fname)
 			continue;
 		if (!(is_static_library(fname)) &&
 				!parse_source_files(fname, &md))
-			goto release;
+			goto free;
 	}
 
 	md4_final_ascii(&md, sum, sumlen);
-release:
-	release_file(file, len);
-}
-
-static void write_version(const char *filename, const char *sum,
-			  unsigned long offset)
-{
-	int fd;
-
-	fd = open(filename, O_RDWR);
-	if (fd < 0) {
-		warn("changing sum in %s failed: %s\n",
-			filename, strerror(errno));
-		return;
-	}
-
-	if (lseek(fd, offset, SEEK_SET) == (off_t)-1) {
-		warn("changing sum in %s:%lu failed: %s\n",
-			filename, offset, strerror(errno));
-		goto out;
-	}
-
-	if (write(fd, sum, strlen(sum)+1) != strlen(sum)+1) {
-		warn("writing sum in %s failed: %s\n",
-			filename, strerror(errno));
-		goto out;
-	}
-out:
-	close(fd);
-}
-
-static int strip_rcs_crap(char *version)
-{
-	unsigned int len, full_len;
-
-	if (strncmp(version, "$Revision", strlen("$Revision")) != 0)
-		return 0;
-
-	/* Space for version string follows. */
-	full_len = strlen(version) + strlen(version + strlen(version) + 1) + 2;
-
-	/* Move string to start with version number: prefix will be
-	 * $Revision$ or $Revision: */
-	len = strlen("$Revision");
-	if (version[len] == ':' || version[len] == '$')
-		len++;
-	while (isspace(version[len]))
-		len++;
-	memmove(version, version+len, full_len-len);
-	full_len -= len;
-
-	/* Preserve up to next whitespace. */
-	len = 0;
-	while (version[len] && !isspace(version[len]))
-		len++;
-	memmove(version + len, version + strlen(version),
-		full_len - strlen(version));
-	return 1;
-}
-
-/* Clean up RCS-style version numbers. */
-void maybe_frob_rcs_version(const char *modfilename,
-			    char *version,
-			    void *modinfo,
-			    unsigned long version_offset)
-{
-	if (strip_rcs_crap(version))
-		write_version(modfilename, version, version_offset);
+free:
+	free(buf);
 }
diff --git a/scripts/modules-check.sh b/scripts/modules-check.sh
index f51f446707b8..43de226071ae 100755
--- a/scripts/modules-check.sh
+++ b/scripts/modules-check.sh
@@ -3,14 +3,24 @@
 
 set -e
 
+if [ $# != 1 ]; then
+	echo "Usage: $0 <modules.order>" >& 2
+	exit 1
+fi
+
+exit_code=0
+
 # Check uniqueness of module names
 check_same_name_modules()
 {
-	for m in $(sed 's:.*/::' modules.order | sort | uniq -d)
+	for m in $(sed 's:.*/::' $1 | sort | uniq -d)
 	do
-		echo "warning: same module names found:" >&2
+		echo "error: the following would cause module name conflict:" >&2
 		sed -n "/\/$m/s:^:  :p" modules.order >&2
+		exit_code=1
 	done
 }
 
-check_same_name_modules
+check_same_name_modules "$1"
+
+exit $exit_code
diff --git a/scripts/package/buildtar b/scripts/package/buildtar
index 77c7caefede1..ad62c6879622 100755
--- a/scripts/package/buildtar
+++ b/scripts/package/buildtar
@@ -28,15 +28,15 @@ case "${1}" in
 		opts=
 		;;
 	targz-pkg)
-		opts=--gzip
+		opts="-I ${_GZIP}"
 		tarball=${tarball}.gz
 		;;
 	tarbz2-pkg)
-		opts=--bzip2
+		opts="-I ${_BZIP2}"
 		tarball=${tarball}.bz2
 		;;
 	tarxz-pkg)
-		opts=--xz
+		opts="-I ${XZ}"
 		tarball=${tarball}.xz
 		;;
 	*)
diff --git a/scripts/xz_wrap.sh b/scripts/xz_wrap.sh
index 7a2d372f4885..76e9cbcfbeab 100755
--- a/scripts/xz_wrap.sh
+++ b/scripts/xz_wrap.sh
@@ -20,4 +20,4 @@ case $SRCARCH in
 	sparc)          BCJ=--sparc ;;
 esac
 
-exec xz --check=crc32 $BCJ --lzma2=$LZMA2OPTS,dict=32MiB
+exec $XZ --check=crc32 $BCJ --lzma2=$LZMA2OPTS,dict=32MiB