Merge tag 'v5.14-rc6' into locking/core, to pick up fixes

Signed-off-by: Ingo Molnar <mingo@kernel.org>

38 files changed, 919 insertions, 409 deletions

diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index 82dd1b65b7a8..f247e691562d 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -90,8 +90,13 @@ clean := -f $(srctree)/scripts/Makefile.clean obj
 echo-cmd = $(if $($(quiet)cmd_$(1)),\
 	echo '  $(call escsq,$($(quiet)cmd_$(1)))$(echo-why)';)
 
+# sink stdout for 'make -s'
+       redirect :=
+ quiet_redirect :=
+silent_redirect := exec >/dev/null;
+
 # printing commands
-cmd = @set -e; $(echo-cmd) $(cmd_$(1))
+cmd = @set -e; $(echo-cmd) $($(quiet)redirect) $(cmd_$(1))
 
 ###
 # if_changed      - execute command if any prerequisite is newer than
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 949f723efe53..02197cb8e3a7 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -219,7 +219,6 @@ endif # CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT
 
 ifdef CONFIG_STACK_VALIDATION
 ifndef CONFIG_LTO_CLANG
-ifneq ($(SKIP_STACK_VALIDATION),1)
 
 __objtool_obj := $(objtree)/tools/objtool/objtool
 
@@ -233,7 +232,6 @@ objtool_obj = $(if $(patsubst y%,, \
 	$(OBJECT_FILES_NON_STANDARD_$(basetarget).o)$(OBJECT_FILES_NON_STANDARD)n), \
 	$(__objtool_obj))
 
-endif # SKIP_STACK_VALIDATION
 endif # CONFIG_LTO_CLANG
 endif # CONFIG_STACK_VALIDATION
 
@@ -268,7 +266,8 @@ define rule_as_o_S
 endef
 
 # Built-in and composite module parts
-$(obj)/%.o: $(src)/%.c $(recordmcount_source) $(objtool_dep) FORCE
+.SECONDEXPANSION:
+$(obj)/%.o: $(src)/%.c $(recordmcount_source) $$(objtool_dep) FORCE
 	$(call if_changed_rule,cc_o_c)
 	$(call cmd,force_checksrc)
 
@@ -349,7 +348,7 @@ cmd_modversions_S =								\
 	fi
 endif
 
-$(obj)/%.o: $(src)/%.S $(objtool_dep) FORCE
+$(obj)/%.o: $(src)/%.S $$(objtool_dep) FORCE
 	$(call if_changed_rule,as_o_S)
 
 targets += $(filter-out $(subdir-builtin), $(real-obj-y))
@@ -387,7 +386,7 @@ ifeq ($(CONFIG_LTO_CLANG) $(CONFIG_MODVERSIONS),y y)
       cmd_update_lto_symversions =					\
 	rm -f $@.symversions						\
 	$(foreach n, $(filter-out FORCE,$^),				\
-		$(if $(wildcard $(n).symversions),			\
+		$(if $(shell test -s $(n).symversions && echo y),	\
 			; cat $(n).symversions >> $@.symversions))
 else
       cmd_update_lto_symversions = echo >/dev/null
diff --git a/scripts/Makefile.kasan b/scripts/Makefile.kasan
index 3d791908ed36..801c415bac59 100644
--- a/scripts/Makefile.kasan
+++ b/scripts/Makefile.kasan
@@ -50,6 +50,7 @@ endif
 CFLAGS_KASAN := -fsanitize=kernel-hwaddress \
 		$(call cc-param,hwasan-instrument-stack=$(stack_enable)) \
 		$(call cc-param,hwasan-use-short-granules=0) \
+		$(call cc-param,hwasan-inline-all-checks=0) \
 		$(instrumentation_flags)
 
 endif # CONFIG_KASAN_SW_TAGS
diff --git a/scripts/Makefile.modfinal b/scripts/Makefile.modfinal
index dd87cea9fba7..5e9b8057fb24 100644
--- a/scripts/Makefile.modfinal
+++ b/scripts/Makefile.modfinal
@@ -39,12 +39,10 @@ prelink-ext := .lto
 # so let's now process the prelinked binary before we link the module.
 
 ifdef CONFIG_STACK_VALIDATION
-ifneq ($(SKIP_STACK_VALIDATION),1)
 cmd_ld_ko_o +=								\
 	$(objtree)/tools/objtool/objtool $(objtool_args)		\
 		$(@:.ko=$(prelink-ext).o);
 
-endif # SKIP_STACK_VALIDATION
 endif # CONFIG_STACK_VALIDATION
 
 endif # CONFIG_LTO_CLANG
@@ -59,7 +57,7 @@ quiet_cmd_ld_ko_o = LD [M]  $@
 quiet_cmd_btf_ko = BTF [M] $@
       cmd_btf_ko = 							\
 	if [ -f vmlinux ]; then						\
-		LLVM_OBJCOPY=$(OBJCOPY) $(PAHOLE) -J --btf_base vmlinux $@; \
+		LLVM_OBJCOPY="$(OBJCOPY)" $(PAHOLE) -J --btf_base vmlinux $@; \
 	else								\
 		printf "Skipping BTF generation for %s due to unavailability of vmlinux\n" $@ 1>&2; \
 	fi;
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 23697a6b1eaa..461d4221e4a4 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1084,10 +1084,10 @@ sub is_maintained_obsolete {
 sub is_SPDX_License_valid {
 	my ($license) = @_;
 
-	return 1 if (!$tree || which("python") eq "" || !(-e "$root/scripts/spdxcheck.py") || !(-e "$gitroot"));
+	return 1 if (!$tree || which("python3") eq "" || !(-x "$root/scripts/spdxcheck.py") || !(-e "$gitroot"));
 
 	my $root_path = abs_path($root);
-	my $status = `cd "$root_path"; echo "$license" | python scripts/spdxcheck.py -`;
+	my $status = `cd "$root_path"; echo "$license" | scripts/spdxcheck.py -`;
 	return 0 if ($status ne "");
 	return 1;
 }
@@ -5361,9 +5361,13 @@ sub process {
 			}
 		}
 
-#goto labels aren't indented, allow a single space however
-		if ($line=~/^.\s+[A-Za-z\d_]+:(?![0-9]+)/ and
-		   !($line=~/^. [A-Za-z\d_]+:/) and !($line=~/^.\s+default:/)) {
+# check that goto labels aren't indented (allow a single space indentation)
+# and ignore bitfield definitions like foo:1
+# Strictly, labels can have whitespace after the identifier and before the :
+# but this is not allowed here as many ?: uses would appear to be labels
+		if ($sline =~ /^.\s+[A-Za-z_][A-Za-z\d_]*:(?!\s*\d+)/ &&
+		    $sline !~ /^. [A-Za-z\d_][A-Za-z\d_]*:/ &&
+		    $sline !~ /^.\s+default:/) {
 			if (WARN("INDENTED_LABEL",
 				 "labels should not be indented\n" . $herecurr) &&
 			    $fix) {
@@ -5458,7 +5462,7 @@ sub process {
 # Return of what appears to be an errno should normally be negative
 		if ($sline =~ /\breturn(?:\s*\(+\s*|\s+)(E[A-Z]+)(?:\s*\)+\s*|\s*)[;:,]/) {
 			my $name = $1;
-			if ($name ne 'EOF' && $name ne 'ERROR') {
+			if ($name ne 'EOF' && $name ne 'ERROR' && $name !~ /^EPOLL/) {
 				WARN("USE_NEGATIVE_ERRNO",
 				     "return of an errno should typically be negative (ie: return -$1)\n" . $herecurr);
 			}
diff --git a/scripts/checksyscalls.sh b/scripts/checksyscalls.sh
index a18b47695f55..b7609958ee36 100755
--- a/scripts/checksyscalls.sh
+++ b/scripts/checksyscalls.sh
@@ -40,6 +40,10 @@ cat << EOF
 #define __IGNORE_setrlimit	/* setrlimit */
 #endif
 
+#ifndef __ARCH_WANT_MEMFD_SECRET
+#define __IGNORE_memfd_secret
+#endif
+
 /* Missing flags argument */
 #define __IGNORE_renameat	/* renameat2 */
 
diff --git a/scripts/checkversion.pl b/scripts/checkversion.pl
index f67b125c5269..94cd49eff605 100755
--- a/scripts/checkversion.pl
+++ b/scripts/checkversion.pl
@@ -1,10 +1,10 @@
 #! /usr/bin/env perl
 # SPDX-License-Identifier: GPL-2.0
 #
-# checkversion find uses of LINUX_VERSION_CODE or KERNEL_VERSION
-# without including <linux/version.h>, or cases of
-# including <linux/version.h> that don't need it.
-# Copyright (C) 2003, Randy Dunlap <rdunlap@xenotime.net>
+# checkversion finds uses of all macros in <linux/version.h>
+# where the source files do not #include <linux/version.h>; or cases
+# of including <linux/version.h> where it is not needed.
+# Copyright (C) 2003, Randy Dunlap <rdunlap@infradead.org>
 
 use strict;
 
@@ -13,7 +13,8 @@ $| = 1;
 my $debugging;
 
 foreach my $file (@ARGV) {
-    next if $file =~ "include/linux/version\.h";
+    next if $file =~ "include/generated/uapi/linux/version\.h";
+    next if $file =~ "usr/include/linux/version\.h";
     # Open this file.
     open( my $f, '<', $file )
       or die "Can't open $file: $!\n";
@@ -41,8 +42,11 @@ foreach my $file (@ARGV) {
 	    $iLinuxVersion      = $. if m/^\s*#\s*include\s*<linux\/version\.h>/o;
 	}
 
-	# Look for uses: LINUX_VERSION_CODE, KERNEL_VERSION, UTS_RELEASE
-	if (($_ =~ /LINUX_VERSION_CODE/) || ($_ =~ /\WKERNEL_VERSION/)) {
+	# Look for uses: LINUX_VERSION_CODE, KERNEL_VERSION,
+	# LINUX_VERSION_MAJOR, LINUX_VERSION_PATCHLEVEL, LINUX_VERSION_SUBLEVEL
+	if (($_ =~ /LINUX_VERSION_CODE/) || ($_ =~ /\WKERNEL_VERSION/) ||
+	    ($_ =~ /LINUX_VERSION_MAJOR/) || ($_ =~ /LINUX_VERSION_PATCHLEVEL/) ||
+	    ($_ =~ /LINUX_VERSION_SUBLEVEL/)) {
 	    $fUseVersion = 1;
             last if $iLinuxVersion;
         }
diff --git a/scripts/coccicheck b/scripts/coccicheck
index 65fee63aeadb..caba0bff6da7 100755
--- a/scripts/coccicheck
+++ b/scripts/coccicheck
@@ -87,7 +87,7 @@ else
     fi
 
     # Use only one thread per core by default if hyperthreading is enabled
-    THREADS_PER_CORE=$(lscpu | grep "Thread(s) per core: " | tr -cd "[:digit:]")
+    THREADS_PER_CORE=$(LANG=C lscpu | grep "Thread(s) per core: " | tr -cd "[:digit:]")
     if [ -z "$J" ]; then
         NPROC=$(getconf _NPROCESSORS_ONLN)
 	if [ $THREADS_PER_CORE -gt 1 -a $NPROC -gt 4 ] ; then
diff --git a/scripts/coccinelle/api/kobj_to_dev.cocci b/scripts/coccinelle/api/kobj_to_dev.cocci
deleted file mode 100644
index cd5d31c6fe76..000000000000
--- a/scripts/coccinelle/api/kobj_to_dev.cocci
+++ /dev/null
@@ -1,45 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-///
-/// Use kobj_to_dev() instead of container_of()
-///
-// Confidence: High
-// Copyright: (C) 2020 Denis Efremov ISPRAS
-// Options: --no-includes --include-headers
-//
-// Keywords: kobj_to_dev, container_of
-//
-
-virtual context
-virtual report
-virtual org
-virtual patch
-
-
-@r depends on !patch@
-expression ptr;
-symbol kobj;
-position p;
-@@
-
-* container_of(ptr, struct device, kobj)@p
-
-
-@depends on patch@
-expression ptr;
-@@
-
-- container_of(ptr, struct device, kobj)
-+ kobj_to_dev(ptr)
-
-
-@script:python depends on report@
-p << r.p;
-@@
-
-coccilib.report.print_report(p[0], "WARNING opportunity for kobj_to_dev()")
-
-@script:python depends on org@
-p << r.p;
-@@
-
-coccilib.org.print_todo(p[0], "WARNING opportunity for kobj_to_dev()")
diff --git a/scripts/coccinelle/free/kfree.cocci b/scripts/coccinelle/free/kfree.cocci
index 168568386034..9b6e2037c2a9 100644
--- a/scripts/coccinelle/free/kfree.cocci
+++ b/scripts/coccinelle/free/kfree.cocci
@@ -22,9 +22,9 @@ position p1;
 @@
 
 (
-* kfree@p1(E)
+ kfree@p1(E)
 |
-* kfree_sensitive@p1(E)
+ kfree_sensitive@p1(E)
 )
 
 @print expression@
@@ -66,9 +66,9 @@ position ok;
 
 while (1) { ...
 (
-* kfree@ok(E)
+ kfree@ok(E)
 |
-* kfree_sensitive@ok(E)
+ kfree_sensitive@ok(E)
 )
   ... when != break;
       when != goto l;
@@ -84,9 +84,9 @@ position free.p1!=loop.ok,p2!={print.p,sz.p};
 @@
 
 (
-* kfree@p1(E,...)
+ kfree@p1(E,...)
 |
-* kfree_sensitive@p1(E,...)
+ kfree_sensitive@p1(E,...)
 )
 ...
 (
diff --git a/scripts/coccinelle/misc/flexible_array.cocci b/scripts/coccinelle/misc/flexible_array.cocci
index 947fbaff82a9..f427fd68ed2d 100644
--- a/scripts/coccinelle/misc/flexible_array.cocci
+++ b/scripts/coccinelle/misc/flexible_array.cocci
@@ -51,21 +51,40 @@ position p : script:python() { relevant(p) };
   };
 )
 
+@only_field depends on patch@
+identifier name, array;
+type T;
+position q;
+@@
+
+(
+  struct name {@q
+    T array[0];
+  };
+|
+  struct {@q
+    T array[0];
+  };
+)
+
 @depends on patch@
 identifier name, array;
 type T;
 position p : script:python() { relevant(p) };
+// position @q with rule "only_field" simplifies
+// handling of bitfields, arrays, etc.
+position q != only_field.q;
 @@
 
 (
-  struct name {
+  struct name {@q
     ...
     T array@p[
 -       0
     ];
   };
 |
-  struct {
+  struct {@q
     ...
     T array@p[
 -       0
diff --git a/scripts/coccinelle/misc/irqf_oneshot.cocci b/scripts/coccinelle/misc/irqf_oneshot.cocci
index 7b48287b3dc1..9b6f404d07f2 100644
--- a/scripts/coccinelle/misc/irqf_oneshot.cocci
+++ b/scripts/coccinelle/misc/irqf_oneshot.cocci
@@ -103,11 +103,11 @@ devm_request_threaded_irq@p(dev, irq, NULL, ...)
 @script:python depends on org@
 p << match.p;
 @@
-msg = "ERROR: Threaded IRQ with no primary handler requested without IRQF_ONESHOT"
+msg = "WARNING: Threaded IRQ with no primary handler requested without IRQF_ONESHOT (unless it is nested IRQ)"
 coccilib.org.print_todo(p[0],msg)
 
 @script:python depends on report@
 p << match.p;
 @@
-msg = "ERROR: Threaded IRQ with no primary handler requested without IRQF_ONESHOT"
+msg = "WARNING: Threaded IRQ with no primary handler requested without IRQF_ONESHOT (unless it is nested IRQ)"
 coccilib.report.print_report(p[0],msg)
diff --git a/scripts/coccinelle/misc/minmax.cocci b/scripts/coccinelle/misc/minmax.cocci
new file mode 100644
index 000000000000..fcf908b34f27
--- /dev/null
+++ b/scripts/coccinelle/misc/minmax.cocci
@@ -0,0 +1,222 @@
+// SPDX-License-Identifier: GPL-2.0-only
+///
+/// Check for opencoded min(), max() implementations.
+/// Generated patches sometimes require adding a cast to fix compile warning.
+/// Warnings/patches scope intentionally limited to a function body.
+///
+// Confidence: Medium
+// Copyright: (C) 2021 Denis Efremov ISPRAS
+// Options: --no-includes --include-headers
+//
+// Keywords: min, max
+//
+
+
+virtual report
+virtual org
+virtual context
+virtual patch
+
+@rmax depends on !patch@
+identifier func;
+expression x, y;
+binary operator cmp = {>, >=};
+position p;
+@@
+
+func(...)
+{
+	<...
+*	((x) cmp@p (y) ? (x) : (y))
+	...>
+}
+
+@rmaxif depends on !patch@
+identifier func;
+expression x, y;
+expression max_val;
+binary operator cmp = {>, >=};
+position p;
+@@
+
+func(...)
+{
+	<...
+*	if ((x) cmp@p (y)) {
+*		max_val = (x);
+*	} else {
+*		max_val = (y);
+*	}
+	...>
+}
+
+@rmin depends on !patch@
+identifier func;
+expression x, y;
+binary operator cmp = {<, <=};
+position p;
+@@
+
+func(...)
+{
+	<...
+*	((x) cmp@p (y) ? (x) : (y))
+	...>
+}
+
+@rminif depends on !patch@
+identifier func;
+expression x, y;
+expression min_val;
+binary operator cmp = {<, <=};
+position p;
+@@
+
+func(...)
+{
+	<...
+*	if ((x) cmp@p (y)) {
+*		min_val = (x);
+*	} else {
+*		min_val = (y);
+*	}
+	...>
+}
+
+@pmax depends on patch@
+identifier func;
+expression x, y;
+binary operator cmp = {>=, >};
+@@
+
+func(...)
+{
+	<...
+-	((x) cmp (y) ? (x) : (y))
++	max(x, y)
+	...>
+}
+
+@pmaxif depends on patch@
+identifier func;
+expression x, y;
+expression max_val;
+binary operator cmp = {>=, >};
+@@
+
+func(...)
+{
+	<...
+-	if ((x) cmp (y)) {
+-		max_val = x;
+-	} else {
+-		max_val = y;
+-	}
++	max_val = max(x, y);
+	...>
+}
+
+// Don't generate patches for errcode returns.
+@errcode depends on patch@
+position p;
+identifier func;
+expression x;
+binary operator cmp = {<, <=};
+@@
+
+func(...)
+{
+	<...
+	return ((x) cmp@p 0 ? (x) : 0);
+	...>
+}
+
+@pmin depends on patch@
+identifier func;
+expression x, y;
+binary operator cmp = {<=, <};
+position p != errcode.p;
+@@
+
+func(...)
+{
+	<...
+-	((x) cmp@p (y) ? (x) : (y))
++	min(x, y)
+	...>
+}
+
+@pminif depends on patch@
+identifier func;
+expression x, y;
+expression min_val;
+binary operator cmp = {<=, <};
+@@
+
+func(...)
+{
+	<...
+-	if ((x) cmp (y)) {
+-		min_val = x;
+-	} else {
+-		min_val = y;
+-	}
++	min_val = min(x, y);
+	...>
+}
+
+@script:python depends on report@
+p << rmax.p;
+@@
+
+for p0 in p:
+	coccilib.report.print_report(p0, "WARNING opportunity for max()")
+
+@script:python depends on org@
+p << rmax.p;
+@@
+
+for p0 in p:
+	coccilib.org.print_todo(p0, "WARNING opportunity for max()")
+
+@script:python depends on report@
+p << rmaxif.p;
+@@
+
+for p0 in p:
+	coccilib.report.print_report(p0, "WARNING opportunity for max()")
+
+@script:python depends on org@
+p << rmaxif.p;
+@@
+
+for p0 in p:
+	coccilib.org.print_todo(p0, "WARNING opportunity for max()")
+
+@script:python depends on report@
+p << rmin.p;
+@@
+
+for p0 in p:
+	coccilib.report.print_report(p0, "WARNING opportunity for min()")
+
+@script:python depends on org@
+p << rmin.p;
+@@
+
+for p0 in p:
+	coccilib.org.print_todo(p0, "WARNING opportunity for min()")
+
+@script:python depends on report@
+p << rminif.p;
+@@
+
+for p0 in p:
+	coccilib.report.print_report(p0, "WARNING opportunity for min()")
+
+@script:python depends on org@
+p << rminif.p;
+@@
+
+for p0 in p:
+	coccilib.org.print_todo(p0, "WARNING opportunity for min()")
diff --git a/scripts/coccinelle/misc/swap.cocci b/scripts/coccinelle/misc/swap.cocci
new file mode 100644
index 000000000000..c5e71b7ef7f5
--- /dev/null
+++ b/scripts/coccinelle/misc/swap.cocci
@@ -0,0 +1,122 @@
+// SPDX-License-Identifier: GPL-2.0-only
+///
+/// Check for opencoded swap() implementation.
+///
+// Confidence: High
+// Copyright: (C) 2021 Denis Efremov ISPRAS
+// Options: --no-includes --include-headers
+//
+// Keywords: swap
+//
+
+virtual patch
+virtual org
+virtual report
+virtual context
+
+@rvar depends on !patch@
+identifier tmp;
+expression a, b;
+type T;
+position p;
+@@
+
+(
+* T tmp;
+|
+* T tmp = 0;
+|
+* T *tmp = NULL;
+)
+... when != tmp
+* tmp = a;
+* a = b;@p
+* b = tmp;
+... when != tmp
+
+@r depends on !patch@
+identifier tmp;
+expression a, b;
+position p != rvar.p;
+@@
+
+* tmp = a;
+* a = b;@p
+* b = tmp;
+
+@rpvar depends on patch@
+identifier tmp;
+expression a, b;
+type T;
+@@
+
+(
+- T tmp;
+|
+- T tmp = 0;
+|
+- T *tmp = NULL;
+)
+... when != tmp
+- tmp = a;
+- a = b;
+- b = tmp
++ swap(a, b)
+  ;
+... when != tmp
+
+@rp depends on patch@
+identifier tmp;
+expression a, b;
+@@
+
+- tmp = a;
+- a = b;
+- b = tmp
++ swap(a, b)
+  ;
+
+@depends on patch && (rpvar || rp)@
+@@
+
+(
+  for (...;...;...)
+- {
+	swap(...);
+- }
+|
+  while (...)
+- {
+	swap(...);
+- }
+|
+  if (...)
+- {
+	swap(...);
+- }
+)
+
+
+@script:python depends on report@
+p << r.p;
+@@
+
+coccilib.report.print_report(p[0], "WARNING opportunity for swap()")
+
+@script:python depends on org@
+p << r.p;
+@@
+
+coccilib.org.print_todo(p[0], "WARNING opportunity for swap()")
+
+@script:python depends on report@
+p << rvar.p;
+@@
+
+coccilib.report.print_report(p[0], "WARNING opportunity for swap()")
+
+@script:python depends on org@
+p << rvar.p;
+@@
+
+coccilib.org.print_todo(p[0], "WARNING opportunity for swap()")
diff --git a/scripts/coccinelle/misc/uninitialized_var.cocci b/scripts/coccinelle/misc/uninitialized_var.cocci
index 8fa845cefe11..69bbaae47e73 100644
--- a/scripts/coccinelle/misc/uninitialized_var.cocci
+++ b/scripts/coccinelle/misc/uninitialized_var.cocci
@@ -1,7 +1,9 @@
 // SPDX-License-Identifier: GPL-2.0-only
 ///
 /// Please, don't reintroduce uninitialized_var().
-/// From Documentation/process/deprecated.rst:
+///
+/// From Documentation/process/deprecated.rst,
+/// commit 4b19bec97c88 ("docs: deprecated.rst: Add uninitialized_var()"):
 ///  For any compiler warnings about uninitialized variables, just add
 ///  an initializer. Using warning-silencing tricks is dangerous as it
 ///  papers over real bugs (or can in the future), and suppresses unrelated
@@ -11,6 +13,11 @@
 ///  obviously redundant, the compiler's dead-store elimination pass will make
 ///  sure there are no needless variable writes.
 ///
+/// Later, commit 3942ea7a10c9 ("deprecated.rst: Remove now removed
+/// uninitialized_var") removed this section because all initializations of
+/// this kind were cleaned-up from the kernel. This cocci rule checks that
+/// the macro is not explicitly or implicitly reintroduced.
+///
 // Confidence: High
 // Copyright: (C) 2020 Denis Efremov ISPRAS
 // Options: --no-includes --include-headers
@@ -40,12 +47,10 @@ position p;
 p << r.p;
 @@
 
-coccilib.report.print_report(p[0],
-  "WARNING this kind of initialization is deprecated (https://www.kernel.org/doc/html/latest/process/deprecated.html#uninitialized-var)")
+coccilib.report.print_report(p[0], "WARNING this kind of initialization is deprecated")
 
 @script:python depends on org@
 p << r.p;
 @@
 
-coccilib.org.print_todo(p[0],
-  "WARNING this kind of initialization is deprecated (https://www.kernel.org/doc/html/latest/process/deprecated.html#uninitialized-var)")
+coccilib.org.print_todo(p[0], "WARNING this kind of initialization is deprecated")
diff --git a/scripts/decode_stacktrace.sh b/scripts/decode_stacktrace.sh
index 90398347e366..5fbad61fe490 100755
--- a/scripts/decode_stacktrace.sh
+++ b/scripts/decode_stacktrace.sh
@@ -3,11 +3,10 @@
 # (c) 2014, Sasha Levin <sasha.levin@oracle.com>
 #set -x
 
-if [[ $# < 1 ]]; then
+usage() {
 	echo "Usage:"
-	echo "	$0 -r <release> | <vmlinux> [base path] [modules path]"
-	exit 1
-fi
+	echo "	$0 -r <release> | <vmlinux> [<base path>|auto] [<modules path>]"
+}
 
 if [[ $1 == "-r" ]] ; then
 	vmlinux=""
@@ -24,6 +23,7 @@ if [[ $1 == "-r" ]] ; then
 
 	if [[ $vmlinux == "" ]] ; then
 		echo "ERROR! vmlinux image for release $release is not found" >&2
+		usage
 		exit 2
 	fi
 else
@@ -31,12 +31,35 @@ else
 	basepath=${2-auto}
 	modpath=$3
 	release=""
+	debuginfod=
+
+	# Can we use debuginfod-find?
+	if type debuginfod-find >/dev/null 2>&1 ; then
+		debuginfod=${1-only}
+	fi
+
+	if [[ $vmlinux == "" && -z $debuginfod ]] ; then
+		echo "ERROR! vmlinux image must be specified" >&2
+		usage
+		exit 1
+	fi
 fi
 
 declare -A cache
 declare -A modcache
 
 find_module() {
+	if [[ -n $debuginfod ]] ; then
+		if [[ -n $modbuildid ]] ; then
+			debuginfod-find debuginfo $modbuildid && return
+		fi
+
+		# Only using debuginfod so don't try to find vmlinux module path
+		if [[ $debuginfod == "only" ]] ; then
+			return
+		fi
+	fi
+
 	if [[ "$modpath" != "" ]] ; then
 		for fn in $(find "$modpath" -name "${module//_/[-_]}.ko*") ; do
 			if readelf -WS "$fn" | grep -qwF .debug_line ; then
@@ -51,7 +74,7 @@ find_module() {
 	find_module && return
 
 	if [[ $release == "" ]] ; then
-		release=$(gdb -ex 'print init_uts_ns.name.release' -ex 'quit' -quiet -batch "$vmlinux" | sed -n 's/\$1 = "\(.*\)".*/\1/p')
+		release=$(gdb -ex 'print init_uts_ns.name.release' -ex 'quit' -quiet -batch "$vmlinux" 2>/dev/null | sed -n 's/\$1 = "\(.*\)".*/\1/p')
 	fi
 
 	for dn in {/usr/lib/debug,}/lib/modules/$release ; do
@@ -105,7 +128,7 @@ parse_symbol() {
 	if [[ "${cache[$module,$name]+isset}" == "isset" ]]; then
 		local base_addr=${cache[$module,$name]}
 	else
-		local base_addr=$(nm "$objfile" | awk '$3 == "'$name'" && ($2 == "t" || $2 == "T") {print $1; exit}')
+		local base_addr=$(nm "$objfile" 2>/dev/null | awk '$3 == "'$name'" && ($2 == "t" || $2 == "T") {print $1; exit}')
 		if [[ $base_addr == "" ]] ; then
 			# address not found
 			return
@@ -129,7 +152,7 @@ parse_symbol() {
 	if [[ "${cache[$module,$address]+isset}" == "isset" ]]; then
 		local code=${cache[$module,$address]}
 	else
-		local code=$(${CROSS_COMPILE}addr2line -i -e "$objfile" "$address")
+		local code=$(${CROSS_COMPILE}addr2line -i -e "$objfile" "$address" 2>/dev/null)
 		cache[$module,$address]=$code
 	fi
 
@@ -150,6 +173,27 @@ parse_symbol() {
 	symbol="$segment$name ($code)"
 }
 
+debuginfod_get_vmlinux() {
+	local vmlinux_buildid=${1##* }
+
+	if [[ $vmlinux != "" ]]; then
+		return
+	fi
+
+	if [[ $vmlinux_buildid =~ ^[0-9a-f]+ ]]; then
+		vmlinux=$(debuginfod-find debuginfo $vmlinux_buildid)
+		if [[ $? -ne 0 ]] ; then
+			echo "ERROR! vmlinux image not found via debuginfod-find" >&2
+			usage
+			exit 2
+		fi
+		return
+	fi
+	echo "ERROR! Build ID for vmlinux not found. Try passing -r or specifying vmlinux" >&2
+	usage
+	exit 2
+}
+
 decode_code() {
 	local scripts=`dirname "${BASH_SOURCE[0]}"`
 
@@ -157,6 +201,14 @@ decode_code() {
 }
 
 handle_line() {
+	if [[ $basepath == "auto" && $vmlinux != "" ]] ; then
+		module=""
+		symbol="kernel_init+0x0/0x0"
+		parse_symbol
+		basepath=${symbol#kernel_init (}
+		basepath=${basepath%/init/main.c:*)}
+	fi
+
 	local words
 
 	# Tokenize
@@ -182,16 +234,28 @@ handle_line() {
 		fi
 	done
 
+	if [[ ${words[$last]} =~ ^[0-9a-f]+\] ]]; then
+		words[$last-1]="${words[$last-1]} ${words[$last]}"
+		unset words[$last]
+		last=$(( $last - 1 ))
+	fi
+
 	if [[ ${words[$last]} =~ \[([^]]+)\] ]]; then
 		module=${words[$last]}
 		module=${module#\[}
 		module=${module%\]}
+		modbuildid=${module#* }
+		module=${module% *}
+		if [[ $modbuildid == $module ]]; then
+			modbuildid=
+		fi
 		symbol=${words[$last-1]}
 		unset words[$last-1]
 	else
 		# The symbol is the last element, process it
 		symbol=${words[$last]}
 		module=
+		modbuildid=
 	fi
 
 	unset words[$last]
@@ -201,14 +265,6 @@ handle_line() {
 	echo "${words[@]}" "$symbol $module"
 }
 
-if [[ $basepath == "auto" ]] ; then
-	module=""
-	symbol="kernel_init+0x0/0x0"
-	parse_symbol
-	basepath=${symbol#kernel_init (}
-	basepath=${basepath%/init/main.c:*)}
-fi
-
 while read line; do
 	# Let's see if we have an address in the line
 	if [[ $line =~ \[\<([^]]+)\>\] ]] ||
@@ -218,6 +274,9 @@ while read line; do
 	# Is it a code line?
 	elif [[ $line == *Code:* ]]; then
 		decode_code "$line"
+	# Is it a version line?
+	elif [[ -n $debuginfod && $line =~ PID:\ [0-9]+\ Comm: ]]; then
+		debuginfod_get_vmlinux "$line"
 	else
 		# Nothing special in this line, show it as is
 		echo "$line"
diff --git a/scripts/documentation-file-ref-check b/scripts/documentation-file-ref-check
index c71832b2312b..7187ea5e5149 100755
--- a/scripts/documentation-file-ref-check
+++ b/scripts/documentation-file-ref-check
@@ -24,7 +24,7 @@ my $help = 0;
 my $fix = 0;
 my $warn = 0;
 
-if (! -d ".git") {
+if (! -e ".git") {
 	printf "Warning: can't check if file exists, as this is not a git tree\n";
 	exit 0;
 }
diff --git a/scripts/dummy-tools/gcc b/scripts/dummy-tools/gcc
index f6d543725f1e..b2483149bbe5 100755
--- a/scripts/dummy-tools/gcc
+++ b/scripts/dummy-tools/gcc
@@ -76,7 +76,11 @@ fi
 if arg_contain -S "$@"; then
 	# For scripts/gcc-x86-*-has-stack-protector.sh
 	if arg_contain -fstack-protector "$@"; then
-		echo "%gs"
+		if arg_contain -mstack-protector-guard-reg=fs "$@"; then
+			echo "%fs"
+		else
+			echo "%gs"
+		fi
 		exit 0
 	fi
 
diff --git a/scripts/jobserver-exec b/scripts/jobserver-exec
index 48d141e3ec56..8762887a970c 100755
--- a/scripts/jobserver-exec
+++ b/scripts/jobserver-exec
@@ -10,7 +10,7 @@ from __future__ import print_function
 import os, sys, errno
 import subprocess
 
-# Extract and prepare jobserver file descriptors from envirnoment.
+# Extract and prepare jobserver file descriptors from environment.
 claim = 0
 jobs = b""
 try:
diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
index bfa1ea8f5f98..5d84b44a2a2a 100644
--- a/scripts/kconfig/conf.c
+++ b/scripts/kconfig/conf.c
@@ -678,7 +678,7 @@ static void check_conf(struct menu *menu)
 		check_conf(child);
 }
 
-static struct option long_opts[] = {
+static const struct option long_opts[] = {
 	{"help",          no_argument,       NULL,            'h'},
 	{"silent",        no_argument,       NULL,            's'},
 	{"oldaskconfig",  no_argument,       &input_mode_opt, oldaskconfig},
diff --git a/scripts/kconfig/streamline_config.pl b/scripts/kconfig/streamline_config.pl
index 911c72a2dbc4..1a5fea0519eb 100755
--- a/scripts/kconfig/streamline_config.pl
+++ b/scripts/kconfig/streamline_config.pl
@@ -601,12 +601,12 @@ if (defined($ENV{'LMC_KEEP'})) {
 sub in_preserved_kconfigs {
     my $kconfig = $config2kfile{$_[0]};
     if (!defined($kconfig)) {
-        return 0;
+	return 0;
     }
     foreach my $excl (@preserved_kconfigs) {
-        if($kconfig =~ /^$excl/) {
-            return 1;
-        }
+	if($kconfig =~ /^$excl/) {
+	    return 1;
+	}
     }
     return 0;
 }
@@ -629,52 +629,52 @@ foreach my $line (@config_file) {
     }
 
     if (/CONFIG_MODULE_SIG_KEY="(.+)"/) {
-        my $orig_cert = $1;
-        my $default_cert = "certs/signing_key.pem";
-
-        # Check that the logic in this script still matches the one in Kconfig
-        if (!defined($depends{"MODULE_SIG_KEY"}) ||
-            $depends{"MODULE_SIG_KEY"} !~ /"\Q$default_cert\E"/) {
-            print STDERR "WARNING: MODULE_SIG_KEY assertion failure, ",
-                "update needed to ", __FILE__, " line ", __LINE__, "\n";
-            print;
-        } elsif ($orig_cert ne $default_cert && ! -f $orig_cert) {
-            print STDERR "Module signature verification enabled but ",
-                "module signing key \"$orig_cert\" not found. Resetting ",
-                "signing key to default value.\n";
-            print "CONFIG_MODULE_SIG_KEY=\"$default_cert\"\n";
-        } else {
-            print;
-        }
-        next;
+	my $orig_cert = $1;
+	my $default_cert = "certs/signing_key.pem";
+
+	# Check that the logic in this script still matches the one in Kconfig
+	if (!defined($depends{"MODULE_SIG_KEY"}) ||
+	    $depends{"MODULE_SIG_KEY"} !~ /"\Q$default_cert\E"/) {
+	    print STDERR "WARNING: MODULE_SIG_KEY assertion failure, ",
+		"update needed to ", __FILE__, " line ", __LINE__, "\n";
+	    print;
+	} elsif ($orig_cert ne $default_cert && ! -f $orig_cert) {
+	    print STDERR "Module signature verification enabled but ",
+		"module signing key \"$orig_cert\" not found. Resetting ",
+		"signing key to default value.\n";
+	    print "CONFIG_MODULE_SIG_KEY=\"$default_cert\"\n";
+	} else {
+	    print;
+	}
+	next;
     }
 
     if (/CONFIG_SYSTEM_TRUSTED_KEYS="(.+)"/) {
-        my $orig_keys = $1;
-
-        if (! -f $orig_keys) {
-            print STDERR "System keyring enabled but keys \"$orig_keys\" ",
-                "not found. Resetting keys to default value.\n";
-            print "CONFIG_SYSTEM_TRUSTED_KEYS=\"\"\n";
-        } else {
-            print;
-        }
-        next;
+	my $orig_keys = $1;
+
+	if (! -f $orig_keys) {
+	    print STDERR "System keyring enabled but keys \"$orig_keys\" ",
+		"not found. Resetting keys to default value.\n";
+	    print "CONFIG_SYSTEM_TRUSTED_KEYS=\"\"\n";
+	} else {
+	    print;
+	}
+	next;
     }
 
     if (/^(CONFIG.*)=(m|y)/) {
-        if (in_preserved_kconfigs($1)) {
-            dprint "Preserve config $1";
-            print;
-            next;
-        }
+	if (in_preserved_kconfigs($1)) {
+	    dprint "Preserve config $1";
+	    print;
+	    next;
+	}
 	if (defined($configs{$1})) {
 	    if ($localyesconfig) {
-	        $setconfigs{$1} = 'y';
+		$setconfigs{$1} = 'y';
 		print "$1=y\n";
 		next;
 	    } else {
-	        $setconfigs{$1} = $2;
+		$setconfigs{$1} = $2;
 	    }
 	} elsif ($2 eq "m") {
 	    print "# $1 is not set\n";
@@ -702,3 +702,5 @@ foreach my $module (keys(%modules)) {
 	print STDERR "\n";
     }
 }
+
+# vim: softtabstop=4
diff --git a/scripts/kernel-doc b/scripts/kernel-doc
index 4840e748fca8..7c4a6a507ac4 100755
--- a/scripts/kernel-doc
+++ b/scripts/kernel-doc
@@ -406,6 +406,8 @@ my $doc_inline_sect = '\s*\*\s*(@\s*[\w][\w\.]*\s*):(.*)';
 my $doc_inline_end = '^\s*\*/\s*$';
 my $doc_inline_oneline = '^\s*/\*\*\s*(@[\w\s]+):\s*(.*)\s*\*/\s*$';
 my $export_symbol = '^\s*EXPORT_SYMBOL(_GPL)?\s*\(\s*(\w+)\s*\)\s*;';
+my $function_pointer = qr{([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)};
+my $attribute = qr{__attribute__\s*\(\([a-z0-9,_\*\s\(\)]*\)\)}i;
 
 my %parameterdescs;
 my %parameterdesc_start_lines;
@@ -694,7 +696,7 @@ sub output_function_man(%) {
 	    $post = ");";
 	}
 	$type = $args{'parametertypes'}{$parameter};
-	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+	if ($type =~ m/$function_pointer/) {
 	    # pointer-to-function
 	    print ".BI \"" . $parenth . $1 . "\" " . " \") (" . $2 . ")" . $post . "\"\n";
 	} else {
@@ -974,7 +976,7 @@ sub output_function_rst(%) {
 	$count++;
 	$type = $args{'parametertypes'}{$parameter};
 
-	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+	if ($type =~ m/$function_pointer/) {
 	    # pointer-to-function
 	    print $1 . $parameter . ") (" . $2 . ")";
 	} else {
@@ -1211,7 +1213,9 @@ sub dump_struct($$) {
     my $members;
     my $type = qr{struct|union};
     # For capturing struct/union definition body, i.e. "{members*}qualifiers*"
-    my $definition_body = qr{\{(.*)\}(?:\s*(?:__packed|__aligned|____cacheline_aligned_in_smp|____cacheline_aligned|__attribute__\s*\(\([a-z0-9,_\s\(\)]*\)\)))*};
+    my $qualifiers = qr{$attribute|__packed|__aligned|____cacheline_aligned_in_smp|____cacheline_aligned};
+    my $definition_body = qr{\{(.*)\}\s*$qualifiers*};
+    my $struct_members = qr{($type)([^\{\};]+)\{([^\{\}]*)\}([^\{\}\;]*)\;};
 
     if ($x =~ /($type)\s+(\w+)\s*$definition_body/) {
 	$decl_type = $1;
@@ -1235,27 +1239,27 @@ sub dump_struct($$) {
 	# strip comments:
 	$members =~ s/\/\*.*?\*\///gos;
 	# strip attributes
-	$members =~ s/\s*__attribute__\s*\(\([a-z0-9,_\*\s\(\)]*\)\)/ /gi;
+	$members =~ s/\s*$attribute/ /gi;
 	$members =~ s/\s*__aligned\s*\([^;]*\)/ /gos;
 	$members =~ s/\s*__packed\s*/ /gos;
 	$members =~ s/\s*CRYPTO_MINALIGN_ATTR/ /gos;
 	$members =~ s/\s*____cacheline_aligned_in_smp/ /gos;
 	$members =~ s/\s*____cacheline_aligned/ /gos;
 
+	my $args = qr{([^,)]+)};
 	# replace DECLARE_BITMAP
 	$members =~ s/__ETHTOOL_DECLARE_LINK_MODE_MASK\s*\(([^\)]+)\)/DECLARE_BITMAP($1, __ETHTOOL_LINK_MODE_MASK_NBITS)/gos;
-	$members =~ s/DECLARE_BITMAP\s*\(([^,)]+),\s*([^,)]+)\)/unsigned long $1\[BITS_TO_LONGS($2)\]/gos;
+	$members =~ s/DECLARE_BITMAP\s*\($args,\s*$args\)/unsigned long $1\[BITS_TO_LONGS($2)\]/gos;
 	# replace DECLARE_HASHTABLE
-	$members =~ s/DECLARE_HASHTABLE\s*\(([^,)]+),\s*([^,)]+)\)/unsigned long $1\[1 << (($2) - 1)\]/gos;
+	$members =~ s/DECLARE_HASHTABLE\s*\($args,\s*$args\)/unsigned long $1\[1 << (($2) - 1)\]/gos;
 	# replace DECLARE_KFIFO
-	$members =~ s/DECLARE_KFIFO\s*\(([^,)]+),\s*([^,)]+),\s*([^,)]+)\)/$2 \*$1/gos;
+	$members =~ s/DECLARE_KFIFO\s*\($args,\s*$args,\s*$args\)/$2 \*$1/gos;
 	# replace DECLARE_KFIFO_PTR
-	$members =~ s/DECLARE_KFIFO_PTR\s*\(([^,)]+),\s*([^,)]+)\)/$2 \*$1/gos;
-
+	$members =~ s/DECLARE_KFIFO_PTR\s*\($args,\s*$args\)/$2 \*$1/gos;
 	my $declaration = $members;
 
 	# Split nested struct/union elements as newer ones
-	while ($members =~ m/(struct|union)([^\{\};]+)\{([^\{\}]*)\}([^\{\}\;]*)\;/) {
+	while ($members =~ m/$struct_members/) {
 		my $newmember;
 		my $maintype = $1;
 		my $ids = $4;
@@ -1315,7 +1319,7 @@ sub dump_struct($$) {
 				}
 			}
 		}
-		$members =~ s/(struct|union)([^\{\};]+)\{([^\{\}]*)\}([^\{\}\;]*)\;/$newmember/;
+		$members =~ s/$struct_members/$newmember/;
 	}
 
 	# Ignore other nested elements, like enums
@@ -1555,8 +1559,9 @@ sub create_parameterlist($$$$) {
     my $param;
 
     # temporarily replace commas inside function pointer definition
-    while ($args =~ /(\([^\),]+),/) {
-	$args =~ s/(\([^\),]+),/$1#/g;
+    my $arg_expr = qr{\([^\),]+};
+    while ($args =~ /$arg_expr,/) {
+	$args =~ s/($arg_expr),/$1#/g;
     }
 
     foreach my $arg (split($splitter, $args)) {
@@ -1707,7 +1712,7 @@ sub check_sections($$$$$) {
 		foreach $px (0 .. $#prms) {
 			$prm_clean = $prms[$px];
 			$prm_clean =~ s/\[.*\]//;
-			$prm_clean =~ s/__attribute__\s*\(\([a-z,_\*\s\(\)]*\)\)//i;
+			$prm_clean =~ s/$attribute//i;
 			# ignore array size in a parameter string;
 			# however, the original param string may contain
 			# spaces, e.g.:  addr[6 + 2]
@@ -1809,8 +1814,14 @@ sub dump_function($$) {
     # - parport_register_device (function pointer parameters)
     # - atomic_set (macro)
     # - pci_match_device, __copy_to_user (long return type)
-
-    if ($define && $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s+/) {
+    my $name = qr{[a-zA-Z0-9_~:]+};
+    my $prototype_end1 = qr{[^\(]*};
+    my $prototype_end2 = qr{[^\{]*};
+    my $prototype_end = qr{\(($prototype_end1|$prototype_end2)\)};
+    my $type1 = qr{[\w\s]+};
+    my $type2 = qr{$type1\*+};
+
+    if ($define && $prototype =~ m/^()($name)\s+/) {
         # This is an object-like macro, it has no return type and no parameter
         # list.
         # Function-like macros are not allowed to have spaces between
@@ -1818,23 +1829,9 @@ sub dump_function($$) {
         $return_type = $1;
         $declaration_name = $2;
         $noret = 1;
-    } elsif ($prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
-	$prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
-	$prototype =~ m/^(\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
-	$prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
-	$prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
-	$prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
-	$prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
-	$prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
-	$prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
-	$prototype =~ m/^(\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
-	$prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
-	$prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
-	$prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
-	$prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
-	$prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
-	$prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
-	$prototype =~ m/^(\w+\s+\w+\s*\*+\s*\w+\s*\*+\s*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/)  {
+    } elsif ($prototype =~ m/^()($name)\s*$prototype_end/ ||
+	$prototype =~ m/^($type1)\s+($name)\s*$prototype_end/ ||
+	$prototype =~ m/^($type2+)\s*($name)\s*$prototype_end/)  {
 	$return_type = $1;
 	$declaration_name = $2;
 	my $args = $3;
@@ -2111,12 +2108,12 @@ sub process_name($$) {
     } elsif (/$doc_decl/o) {
 	$identifier = $1;
 	my $is_kernel_comment = 0;
-	my $decl_start = qr{\s*\*};
+	my $decl_start = qr{$doc_com};
 	# test for pointer declaration type, foo * bar() - desc
 	my $fn_type = qr{\w+\s*\*\s*}; 
 	my $parenthesis = qr{\(\w*\)};
 	my $decl_end = qr{[-:].*};
-	if (/^$decl_start\s*([\w\s]+?)$parenthesis?\s*$decl_end?$/) {
+	if (/^$decl_start([\w\s]+?)$parenthesis?\s*$decl_end?$/) {
 	    $identifier = $1;
 	}
 	if ($identifier =~ m/^(struct|union|enum|typedef)\b\s*(\S*)/) {
@@ -2126,8 +2123,8 @@ sub process_name($$) {
 	}
 	# Look for foo() or static void foo() - description; or misspelt
 	# identifier
-	elsif (/^$decl_start\s*$fn_type?(\w+)\s*$parenthesis?\s*$decl_end?$/ ||
-	    /^$decl_start\s*$fn_type?(\w+.*)$parenthesis?\s*$decl_end$/) {
+	elsif (/^$decl_start$fn_type?(\w+)\s*$parenthesis?\s*$decl_end?$/ ||
+	    /^$decl_start$fn_type?(\w+.*)$parenthesis?\s*$decl_end$/) {
 	    $identifier = $1;
 	    $decl_type = 'function';
 	    $identifier =~ s/^define\s+//;
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index f4de4c97015b..36ef7b37fc5d 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -38,9 +38,7 @@ LDFLAGS_vmlinux="$3"
 # Will be supressed by "make -s"
 info()
 {
-	if [ "${quiet}" != "silent_" ]; then
-		printf "  %-7s %s\n" "${1}" "${2}"
-	fi
+	printf "  %-7s %s\n" "${1}" "${2}"
 }
 
 # Generate a linker script to ensure correct ordering of initcalls.
@@ -235,12 +233,16 @@ gen_btf()
 
 	vmlinux_link ${1}
 
+	if [ "${pahole_ver}" -ge "118" ] && [ "${pahole_ver}" -le "121" ]; then
+		# pahole 1.18 through 1.21 can't handle zero-sized per-CPU vars
+		extra_paholeopt="${extra_paholeopt} --skip_encoding_btf_vars"
+	fi
 	if [ "${pahole_ver}" -ge "121" ]; then
 		extra_paholeopt="${extra_paholeopt} --btf_gen_floats"
 	fi
 
 	info "BTF" ${2}
-	LLVM_OBJCOPY=${OBJCOPY} ${PAHOLE} -J ${extra_paholeopt} ${1}
+	LLVM_OBJCOPY="${OBJCOPY}" ${PAHOLE} -J ${extra_paholeopt} ${1}
 
 	# Create ${2} which contains just .BTF section but no symbols. Add
 	# SHF_ALLOC because .BTF will be part of the vmlinux image. --strip-all
diff --git a/scripts/min-tool-version.sh b/scripts/min-tool-version.sh
index d22cf91212b0..319f92104f56 100755
--- a/scripts/min-tool-version.sh
+++ b/scripts/min-tool-version.sh
@@ -30,7 +30,12 @@ icc)
 	echo 16.0.3
 	;;
 llvm)
-	echo 10.0.1
+	# https://lore.kernel.org/r/YMtib5hKVyNknZt3@osiris/
+	if [ "$SRCARCH" = s390 ]; then
+		echo 13.0.0
+	else
+		echo 10.0.1
+	fi
 	;;
 *)
 	echo "$1: unknown tool" >&2
diff --git a/scripts/mkcompile_h b/scripts/mkcompile_h
index 4ae735039daf..6a2a04d92f42 100755
--- a/scripts/mkcompile_h
+++ b/scripts/mkcompile_h
@@ -9,8 +9,6 @@ PREEMPT_RT=$5
 CC_VERSION="$6"
 LD=$7
 
-vecho() { [ "${quiet}" = "silent_" ] || echo "$@" ; }
-
 # Do not expand names
 set -f
 
@@ -70,19 +68,27 @@ UTS_VERSION="$(echo $UTS_VERSION $CONFIG_FLAGS $TIMESTAMP | cut -b -$UTS_LEN)"
 # Only replace the real compile.h if the new one is different,
 # in order to preserve the timestamp and avoid unnecessary
 # recompilations.
-# We don't consider the file changed if only the date/time changed.
+# We don't consider the file changed if only the date/time changed,
+# unless KBUILD_BUILD_TIMESTAMP was explicitly set (e.g. for
+# reproducible builds with that value referring to a commit timestamp).
 # A kernel config change will increase the generation number, thus
 # causing compile.h to be updated (including date/time) due to the
 # changed comment in the
 # first line.
 
+if [ -z "$KBUILD_BUILD_TIMESTAMP" ]; then
+   IGNORE_PATTERN="UTS_VERSION"
+else
+   IGNORE_PATTERN="NOT_A_PATTERN_TO_BE_MATCHED"
+fi
+
 if [ -r $TARGET ] && \
-      grep -v 'UTS_VERSION' $TARGET > .tmpver.1 && \
-      grep -v 'UTS_VERSION' .tmpcompile > .tmpver.2 && \
+      grep -v $IGNORE_PATTERN $TARGET > .tmpver.1 && \
+      grep -v $IGNORE_PATTERN .tmpcompile > .tmpver.2 && \
       cmp -s .tmpver.1 .tmpver.2; then
    rm -f .tmpcompile
 else
-   vecho "  UPD     $TARGET"
+   echo "  UPD     $TARGET"
    mv -f .tmpcompile $TARGET
 fi
 rm -f .tmpver.1 .tmpver.2
diff --git a/scripts/mkmakefile b/scripts/mkmakefile
deleted file mode 100755
index 1cb174751429..000000000000
--- a/scripts/mkmakefile
+++ /dev/null
@@ -1,17 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-# Generates a small Makefile used in the root of the output
-# directory, to allow make to be started from there.
-# The Makefile also allow for more convinient build of external modules
-
-# Usage
-# $1 - Kernel src directory
-
-if [ "${quiet}" != "silent_" ]; then
-	echo "  GEN     Makefile"
-fi
-
-cat << EOF > Makefile
-# Automatically generated by $0: don't edit
-include $1/Makefile
-EOF
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 3e623ccc020b..270a7df898e2 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -660,8 +660,11 @@ static void handle_modversion(const struct module *mod,
 	unsigned int crc;
 
 	if (sym->st_shndx == SHN_UNDEF) {
-		warn("EXPORT symbol \"%s\" [%s%s] version generation failed, symbol will not be versioned.\n",
-		     symname, mod->name, mod->is_vmlinux ? "" : ".ko");
+		warn("EXPORT symbol \"%s\" [%s%s] version ...\n"
+		     "Is \"%s\" prototyped in <asm/asm-prototypes.h>?\n",
+		     symname, mod->name, mod->is_vmlinux ? "" : ".ko",
+		     symname);
+
 		return;
 	}
 
diff --git a/scripts/recordmcount.h b/scripts/recordmcount.h
index f9b19524da11..1e9baa5c4fc6 100644
--- a/scripts/recordmcount.h
+++ b/scripts/recordmcount.h
@@ -192,15 +192,20 @@ static unsigned int get_symindex(Elf_Sym const *sym, Elf32_Word const *symtab,
 				 Elf32_Word const *symtab_shndx)
 {
 	unsigned long offset;
+	unsigned short shndx = w2(sym->st_shndx);
 	int index;
 
-	if (sym->st_shndx != SHN_XINDEX)
-		return w2(sym->st_shndx);
+	if (shndx > SHN_UNDEF && shndx < SHN_LORESERVE)
+		return shndx;
 
-	offset = (unsigned long)sym - (unsigned long)symtab;
-	index = offset / sizeof(*sym);
+	if (shndx == SHN_XINDEX) {
+		offset = (unsigned long)sym - (unsigned long)symtab;
+		index = offset / sizeof(*sym);
 
-	return w(symtab_shndx[index]);
+		return w(symtab_shndx[index]);
+	}
+
+	return 0;
 }
 
 static unsigned int get_shnum(Elf_Ehdr const *ehdr, Elf_Shdr const *shdr0)
diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl
index c17e48020ec3..8f6b13ae46bf 100755
--- a/scripts/recordmcount.pl
+++ b/scripts/recordmcount.pl
@@ -173,39 +173,6 @@ my $mcount_regex;	# Find the call site to mcount (return offset)
 my $mcount_adjust;	# Address adjustment to mcount offset
 my $alignment;		# The .align value to use for $mcount_section
 my $section_type;	# Section header plus possible alignment command
-my $can_use_local = 0; 	# If we can use local function references
-
-# Shut up recordmcount if user has older objcopy
-my $quiet_recordmcount = ".tmp_quiet_recordmcount";
-my $print_warning = 1;
-$print_warning = 0 if ( -f $quiet_recordmcount);
-
-##
-# check_objcopy - whether objcopy supports --globalize-symbols
-#
-#  --globalize-symbols came out in 2.17, we must test the version
-#  of objcopy, and if it is less than 2.17, then we can not
-#  record local functions.
-sub check_objcopy
-{
-    open (IN, "$objcopy --version |") or die "error running $objcopy";
-    while (<IN>) {
-	if (/objcopy.*\s(\d+)\.(\d+)/) {
-	    $can_use_local = 1 if ($1 > 2 || ($1 == 2 && $2 >= 17));
-	    last;
-	}
-    }
-    close (IN);
-
-    if (!$can_use_local && $print_warning) {
-	print STDERR "WARNING: could not find objcopy version or version " .
-	    "is less than 2.17.\n" .
-	    "\tLocal function references are disabled.\n";
-	open (QUIET, ">$quiet_recordmcount");
-	printf QUIET "Disables the warning from recordmcount.pl\n";
-	close QUIET;
-    }
-}
 
 if ($arch =~ /(x86(_64)?)|(i386)/) {
     if ($bits == 64) {
@@ -434,8 +401,6 @@ if ($filename =~ m,^(.*)(\.\S),) {
 my $mcount_s = $dirname . "/.tmp_mc_" . $prefix . ".s";
 my $mcount_o = $dirname . "/.tmp_mc_" . $prefix . ".o";
 
-check_objcopy();
-
 #
 # Step 1: find all the local (static functions) and weak symbols.
 #         't' is local, 'w/W' is weak
@@ -473,11 +438,6 @@ sub update_funcs
 
     # is this function static? If so, note this fact.
     if (defined $locals{$ref_func}) {
-
-	# only use locals if objcopy supports globalize-symbols
-	if (!$can_use_local) {
-	    return;
-	}
 	$convert{$ref_func} = 1;
     }
 
diff --git a/scripts/setlocalversion b/scripts/setlocalversion
index db941f6d9591..6b54e46a0f12 100755
--- a/scripts/setlocalversion
+++ b/scripts/setlocalversion
@@ -59,32 +59,19 @@ scm_version()
 			fi
 			# If we are past a tagged commit (like
 			# "v2.6.30-rc5-302-g72357d5"), we pretty print it.
-			#
-			# Ensure the abbreviated sha1 has exactly 12
-			# hex characters, to make the output
-			# independent of git version, local
-			# core.abbrev settings and/or total number of
-			# objects in the current repository - passing
-			# --abbrev=12 ensures a minimum of 12, and the
-			# awk substr() then picks the 'g' and first 12
-			# hex chars.
-			if atag="$(git describe --abbrev=12 2>/dev/null)"; then
-				echo "$atag" | awk -F- '{printf("-%05d-%s", $(NF-1),substr($(NF),0,13))}'
-
-			# If we don't have a tag at all we print -g{commitish},
-			# again using exactly 12 hex chars.
-			else
-				head="$(echo $head | cut -c1-12)"
-				printf '%s%s' -g $head
+			if atag="$(git describe 2>/dev/null)"; then
+				echo "$atag" | awk -F- '{printf("-%05d", $(NF-1))}'
 			fi
-		fi
 
-		# Is this git on svn?
-		if git config --get svn-remote.svn.url >/dev/null; then
-			printf -- '-svn%s' "$(git svn find-rev $head)"
+			# Add -g and exactly 12 hex chars.
+			printf '%s%s' -g "$(echo $head | cut -c1-12)"
 		fi
 
 		# Check for uncommitted changes.
+		# This script must avoid any write attempt to the source tree,
+		# which might be read-only.
+		# You cannot use 'git describe --dirty' because it tries to
+		# create .git/index.lock .
 		# First, with git-status, but --no-optional-locks is only
 		# supported in git >= 2.14, so fall back to git-diff-index if
 		# it fails. Note that git-diff-index does not refresh the
@@ -93,45 +80,9 @@ scm_version()
 		if {
 			git --no-optional-locks status -uno --porcelain 2>/dev/null ||
 			git diff-index --name-only HEAD
-		} | grep -qvE '^(.. )?scripts/package'; then
+		} | read dummy; then
 			printf '%s' -dirty
 		fi
-
-		# All done with git
-		return
-	fi
-
-	# Check for mercurial and a mercurial repo.
-	if test -d .hg && hgid=$(hg id 2>/dev/null); then
-		# Do we have an tagged version?  If so, latesttagdistance == 1
-		if [ "$(hg log -r . --template '{latesttagdistance}')" = "1" ]; then
-			id=$(hg log -r . --template '{latesttag}')
-			printf '%s%s' -hg "$id"
-		else
-			tag=$(printf '%s' "$hgid" | cut -d' ' -f2)
-			if [ -z "$tag" -o "$tag" = tip ]; then
-				id=$(printf '%s' "$hgid" | sed 's/[+ ].*//')
-				printf '%s%s' -hg "$id"
-			fi
-		fi
-
-		# Are there uncommitted changes?
-		# These are represented by + after the changeset id.
-		case "$hgid" in
-			*+|*+\ *) printf '%s' -dirty ;;
-		esac
-
-		# All done with mercurial
-		return
-	fi
-
-	# Check for svn and a svn repo.
-	if rev=$(LC_ALL=C svn info 2>/dev/null | grep '^Last Changed Rev'); then
-		rev=$(echo $rev | awk '{print $NF}')
-		printf -- '-svn%s' "$rev"
-
-		# All done with svn
-		return
 	fi
 }
 
@@ -180,15 +131,16 @@ res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}"
 if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then
 	# full scm version string
 	res="$res$(scm_version)"
-else
-	# append a plus sign if the repository is not in a clean
-	# annotated or signed tagged state (as git describe only
-	# looks at signed or annotated tags - git tag -a/-s) and
-	# LOCALVERSION= is not specified
-	if test "${LOCALVERSION+set}" != "set"; then
-		scm=$(scm_version --short)
-		res="$res${scm:++}"
-	fi
+elif [ "${LOCALVERSION+set}" != "set" ]; then
+	# If the variable LOCALVERSION is not set, append a plus
+	# sign if the repository is not in a clean annotated or
+	# signed tagged state (as git describe only looks at signed
+	# or annotated tags - git tag -a/-s).
+	#
+	# If the variable LOCALVERSION is set (including being set
+	# to an empty string), we don't want to append a plus sign.
+	scm=$(scm_version --short)
+	res="$res${scm:++}"
 fi
 
 echo "$res"
diff --git a/scripts/spdxcheck.py b/scripts/spdxcheck.py
index 3e784cf9f401..ebd06ae642c9 100755
--- a/scripts/spdxcheck.py
+++ b/scripts/spdxcheck.py
@@ -44,7 +44,7 @@ def read_spdxdata(repo):
                 continue
 
             exception = None
-            for l in open(el.path).readlines():
+            for l in open(el.path, encoding="utf-8").readlines():
                 if l.startswith('Valid-License-Identifier:'):
                     lid = l.split(':')[1].strip().upper()
                     if lid in spdx.licenses:
diff --git a/scripts/spelling.txt b/scripts/spelling.txt
index 7b6a01291598..17fdc620d548 100644
--- a/scripts/spelling.txt
+++ b/scripts/spelling.txt
@@ -22,6 +22,7 @@ absolut||absolute
 absoulte||absolute
 acccess||access
 acceess||access
+accelaration||acceleration
 acceleratoin||acceleration
 accelleration||acceleration
 accesing||accessing
@@ -264,6 +265,7 @@ calucate||calculate
 calulate||calculate
 cancelation||cancellation
 cancle||cancel
+canot||cannot
 capabilites||capabilities
 capabilties||capabilities
 capabilty||capability
@@ -494,7 +496,10 @@ digial||digital
 dimention||dimension
 dimesions||dimensions
 diconnected||disconnected
+disabed||disabled
+disble||disable
 disgest||digest
+disired||desired
 dispalying||displaying
 diplay||display
 directon||direction
@@ -710,6 +715,7 @@ havind||having
 heirarchically||hierarchically
 heirarchy||hierarchy
 helpfull||helpful
+hearbeat||heartbeat
 heterogenous||heterogeneous
 hexdecimal||hexadecimal
 hybernate||hibernate
@@ -989,6 +995,7 @@ notications||notifications
 notifcations||notifications
 notifed||notified
 notity||notify
+nubmer||number
 numebr||number
 numner||number
 obtaion||obtain
@@ -1014,8 +1021,10 @@ ommiting||omitting
 ommitted||omitted
 onself||oneself
 ony||only
+openning||opening
 operatione||operation
 opertaions||operations
+opportunies||opportunities
 optionnal||optional
 optmizations||optimizations
 orientatied||orientated
@@ -1111,6 +1120,7 @@ prefitler||prefilter
 preform||perform
 premption||preemption
 prepaired||prepared
+prepate||prepare
 preperation||preparation
 preprare||prepare
 pressre||pressure
@@ -1123,6 +1133,7 @@ privilaged||privileged
 privilage||privilege
 priviledge||privilege
 priviledges||privileges
+privleges||privileges
 probaly||probably
 procceed||proceed
 proccesors||processors
@@ -1167,6 +1178,7 @@ promixity||proximity
 psudo||pseudo
 psuedo||pseudo
 psychadelic||psychedelic
+purgable||purgeable
 pwoer||power
 queing||queuing
 quering||querying
@@ -1180,6 +1192,7 @@ receieve||receive
 recepient||recipient
 recevied||received
 receving||receiving
+recievd||received
 recieved||received
 recieve||receive
 reciever||receiver
@@ -1228,6 +1241,7 @@ reponse||response
 representaion||representation
 reqeust||request
 reqister||register
+requed||requeued
 requestied||requested
 requiere||require
 requirment||requirement
@@ -1332,6 +1346,7 @@ singal||signal
 singed||signed
 sleeped||slept
 sliped||slipped
+softwade||software
 softwares||software
 soley||solely
 souce||source
@@ -1510,6 +1525,7 @@ unintialized||uninitialized
 unitialized||uninitialized
 unkmown||unknown
 unknonw||unknown
+unknouwn||unknown
 unknow||unknown
 unkown||unknown
 unamed||unnamed
diff --git a/scripts/sphinx-pre-install b/scripts/sphinx-pre-install
index fe92020d67e3..288e86a9d1e5 100755
--- a/scripts/sphinx-pre-install
+++ b/scripts/sphinx-pre-install
@@ -22,16 +22,18 @@ my $need = 0;
 my $optional = 0;
 my $need_symlink = 0;
 my $need_sphinx = 0;
-my $need_venv = 0;
+my $need_pip = 0;
 my $need_virtualenv = 0;
 my $rec_sphinx_upgrade = 0;
 my $install = "";
 my $virtenv_dir = "";
 my $python_cmd = "";
+my $activate_cmd;
 my $min_version;
 my $cur_version;
 my $rec_version = "1.7.9";	# PDF won't build here
 my $min_pdf_version = "2.4.4";	# Min version where pdf builds
+my $latest_avail_ver;
 
 #
 # Command line arguments
@@ -319,10 +321,7 @@ sub check_sphinx()
 		return;
 	}
 
-	if ($cur_version lt $rec_version) {
-		$rec_sphinx_upgrade = 1;
-		return;
-	}
+	return if ($cur_version lt $rec_version);
 
 	# On version check mode, just assume Sphinx has all mandatory deps
 	exit (0) if ($version_check);
@@ -701,6 +700,162 @@ sub deactivate_help()
 	printf "\tdeactivate\n";
 }
 
+sub get_virtenv()
+{
+	my $ver;
+	my $min_activate = "$ENV{'PWD'}/${virtenv_prefix}${min_version}/bin/activate";
+	my @activates = glob "$ENV{'PWD'}/${virtenv_prefix}*/bin/activate";
+
+	@activates = sort {$b cmp $a} @activates;
+
+	foreach my $f (@activates) {
+		next if ($f lt $min_activate);
+
+		my $sphinx_cmd = $f;
+		$sphinx_cmd =~ s/activate/sphinx-build/;
+		next if (! -f $sphinx_cmd);
+
+		my $ver = get_sphinx_version($sphinx_cmd);
+		if ($need_sphinx && ($ver ge $min_version)) {
+			return ($f, $ver);
+		} elsif ($ver gt $cur_version) {
+			return ($f, $ver);
+		}
+	}
+	return ("", "");
+}
+
+sub recommend_sphinx_upgrade()
+{
+	my $venv_ver;
+
+	# Avoid running sphinx-builds from venv if $cur_version is good
+	if ($cur_version && ($cur_version ge $rec_version)) {
+		$latest_avail_ver = $cur_version;
+		return;
+	}
+
+	# Get the highest version from sphinx_*/bin/sphinx-build and the
+	# corresponding command to activate the venv/virtenv
+	$activate_cmd = get_virtenv();
+
+	# Store the highest version from Sphinx existing virtualenvs
+	if (($activate_cmd ne "") && ($venv_ver gt $cur_version)) {
+		$latest_avail_ver = $venv_ver;
+	} else {
+		$latest_avail_ver = $cur_version if ($cur_version);
+	}
+
+	# As we don't know package version of Sphinx, and there's no
+	# virtual environments, don't check if upgrades are needed
+	if (!$virtualenv) {
+		return if (!$latest_avail_ver);
+	}
+
+	# Either there are already a virtual env or a new one should be created
+	$need_pip = 1;
+
+	# Return if the reason is due to an upgrade or not
+	if ($latest_avail_ver lt $rec_version) {
+		$rec_sphinx_upgrade = 1;
+	}
+}
+
+#
+# The logic here is complex, as it have to deal with different versions:
+#	- minimal supported version;
+#	- minimal PDF version;
+#	- recommended version.
+# It also needs to work fine with both distro's package and venv/virtualenv
+sub recommend_sphinx_version($)
+{
+	my $virtualenv_cmd = shift;
+
+	if ($latest_avail_ver lt $min_pdf_version) {
+		print "note: If you want pdf, you need at least Sphinx $min_pdf_version.\n";
+	}
+
+	# Version is OK. Nothing to do.
+	return if ($cur_version && ($cur_version ge $rec_version));
+
+	if (!$need_sphinx) {
+		# sphinx-build is present and its version is >= $min_version
+
+		#only recommend enabling a newer virtenv version if makes sense.
+		if ($latest_avail_ver gt $cur_version) {
+			printf "\nYou may also use the newer Sphinx version $latest_avail_ver with:\n";
+			printf "\tdeactivate\n"  if ($ENV{'PWD'} =~ /${virtenv_prefix}/);
+			printf "\t. $activate_cmd\n";
+			deactivate_help();
+
+			return;
+		}
+		return if ($latest_avail_ver ge $rec_version);
+	}
+
+	if (!$virtualenv) {
+		# No sphinx either via package or via virtenv. As we can't
+		# Compare the versions here, just return, recommending the
+		# user to install it from the package distro.
+		return if (!$latest_avail_ver);
+
+		# User doesn't want a virtenv recommendation, but he already
+		# installed one via virtenv with a newer version.
+		# So, print commands to enable it
+		if ($latest_avail_ver gt $cur_version) {
+			printf "\nYou may also use the Sphinx virtualenv version $latest_avail_ver with:\n";
+			printf "\tdeactivate\n"  if ($ENV{'PWD'} =~ /${virtenv_prefix}/);
+			printf "\t. $activate_cmd\n";
+			deactivate_help();
+
+			return;
+		}
+		print "\n";
+	} else {
+		$need++ if ($need_sphinx);
+	}
+
+	# Suggest newer versions if current ones are too old
+	if ($latest_avail_ver && $cur_version ge $min_version) {
+		# If there's a good enough version, ask the user to enable it
+		if ($latest_avail_ver ge $rec_version) {
+			printf "\nNeed to activate Sphinx (version $latest_avail_ver) on virtualenv with:\n";
+			printf "\t. $activate_cmd\n";
+			deactivate_help();
+
+			return;
+		}
+
+		# Version is above the minimal required one, but may be
+		# below the recommended one. So, print warnings/notes
+
+		if ($latest_avail_ver lt $rec_version) {
+			print "Warning: It is recommended at least Sphinx version $rec_version.\n";
+		}
+	}
+
+	# At this point, either it needs Sphinx or upgrade is recommended,
+	# both via pip
+
+	if ($rec_sphinx_upgrade) {
+		if (!$virtualenv) {
+			print "Instead of install/upgrade Python Sphinx pkg, you could use pip/pypi with:\n\n";
+		} else {
+			print "To upgrade Sphinx, use:\n\n";
+		}
+	} else {
+		print "Sphinx needs to be installed either as a package or via pip/pypi with:\n";
+	}
+
+	$python_cmd = find_python_no_venv();
+
+	printf "\t$virtualenv_cmd $virtenv_dir\n";
+
+	printf "\t. $virtenv_dir/bin/activate\n";
+	printf "\tpip install -r $requirement_file\n";
+	deactivate_help();
+}
+
 sub check_needs()
 {
 	# Check if Sphinx is already accessible from current environment
@@ -722,15 +877,14 @@ sub check_needs()
 		if ($virtualenv) {
 			my $tmp = qx($python_cmd --version 2>&1);
 			if ($tmp =~ m/(\d+\.)(\d+\.)/) {
-				if ($1 >= 3 && $2 >= 3) {
-					$need_venv = 1;		# python 3.3 or upper
-				} else {
-					$need_virtualenv = 1;
-				}
 				if ($1 < 3) {
 					# Fail if it finds python2 (or worse)
 					die "Python 3 is required to build the kernel docs\n";
 				}
+				if ($1 == 3 && $2 < 3) {
+					# Need Python 3.3 or upper for venv
+					$need_virtualenv = 1;
+				}
 			} else {
 				die "Warning: couldn't identify $python_cmd version!";
 			}
@@ -739,14 +893,22 @@ sub check_needs()
 		}
 	}
 
-	# Set virtualenv command line, if python < 3.3
+	recommend_sphinx_upgrade();
+
 	my $virtualenv_cmd;
-	if ($need_virtualenv) {
-		$virtualenv_cmd = findprog("virtualenv-3");
-		$virtualenv_cmd = findprog("virtualenv-3.5") if (!$virtualenv_cmd);
-		if (!$virtualenv_cmd) {
-			check_program("virtualenv", 0);
-			$virtualenv_cmd = "virtualenv";
+
+	if ($need_pip) {
+		# Set virtualenv command line, if python < 3.3
+		if ($need_virtualenv) {
+			$virtualenv_cmd = findprog("virtualenv-3");
+			$virtualenv_cmd = findprog("virtualenv-3.5") if (!$virtualenv_cmd);
+			if (!$virtualenv_cmd) {
+				check_program("virtualenv", 0);
+				$virtualenv_cmd = "virtualenv";
+			}
+		} else {
+			$virtualenv_cmd = "$python_cmd -m venv";
+			check_python_module("ensurepip", 0);
 		}
 	}
 
@@ -763,10 +925,6 @@ sub check_needs()
 	check_program("rsvg-convert", 2) if ($pdf);
 	check_program("latexmk", 2) if ($pdf);
 
-	if ($need_sphinx || $rec_sphinx_upgrade) {
-		check_python_module("ensurepip", 0) if ($need_venv);
-	}
-
 	# Do distro-specific checks and output distro-install commands
 	check_distros();
 
@@ -784,67 +942,7 @@ sub check_needs()
 		       which("sphinx-build-3");
 	}
 
-	# NOTE: if the system has a too old Sphinx version installed,
-	# it will recommend installing a newer version using virtualenv
-
-	if ($need_sphinx || $rec_sphinx_upgrade) {
-		my $min_activate = "$ENV{'PWD'}/${virtenv_prefix}${min_version}/bin/activate";
-		my @activates = glob "$ENV{'PWD'}/${virtenv_prefix}*/bin/activate";
-
-		if ($cur_version lt $rec_version) {
-			print "Warning: It is recommended at least Sphinx version $rec_version.\n";
-			print "         If you want pdf, you need at least $min_pdf_version.\n";
-		}
-		if ($cur_version lt $min_pdf_version) {
-			print "Note: It is recommended at least Sphinx version $min_pdf_version if you need PDF support.\n";
-		}
-		@activates = sort {$b cmp $a} @activates;
-		my ($activate, $ver);
-		foreach my $f (@activates) {
-			next if ($f lt $min_activate);
-
-			my $sphinx_cmd = $f;
-			$sphinx_cmd =~ s/activate/sphinx-build/;
-			next if (! -f $sphinx_cmd);
-
-			$ver = get_sphinx_version($sphinx_cmd);
-			if ($need_sphinx && ($ver ge $min_version)) {
-				$activate = $f;
-				last;
-			} elsif ($ver gt $cur_version) {
-				$activate = $f;
-				last;
-			}
-		}
-		if ($activate ne "") {
-			if ($need_sphinx) {
-				printf "\nNeed to activate Sphinx (version $ver) on virtualenv with:\n";
-				printf "\t. $activate\n";
-				deactivate_help();
-				exit (1);
-			} else {
-				printf "\nYou may also use a newer Sphinx (version $ver) with:\n";
-				printf "\tdeactivate && . $activate\n";
-			}
-		} else {
-			my $rec_activate = "$virtenv_dir/bin/activate";
-
-			print "To upgrade Sphinx, use:\n\n" if ($rec_sphinx_upgrade);
-
-			$python_cmd = find_python_no_venv();
-
-			if ($need_venv) {
-				printf "\t$python_cmd -m venv $virtenv_dir\n";
-			} else {
-				printf "\t$virtualenv_cmd $virtenv_dir\n";
-			}
-			printf "\t. $rec_activate\n";
-			printf "\tpip install -r $requirement_file\n";
-			deactivate_help();
-
-			$need++ if (!$rec_sphinx_upgrade);
-		}
-	}
+	recommend_sphinx_version($virtualenv_cmd);
 	printf "\n";
 
 	print "All optional dependencies are met.\n" if (!$optional);
diff --git a/scripts/syscallhdr.sh b/scripts/syscallhdr.sh
index 848ac2735115..22e34cd46b9b 100755
--- a/scripts/syscallhdr.sh
+++ b/scripts/syscallhdr.sh
@@ -69,7 +69,7 @@ guard=_UAPI_ASM_$(basename "$outfile" |
 	sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \
 	-e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g')
 
-grep -E "^[0-9A-Fa-fXx]+[[:space:]]+$abis" "$infile" | sort -n | {
+grep -E "^[0-9A-Fa-fXx]+[[:space:]]+$abis" "$infile" | {
 	echo "#ifndef $guard"
 	echo "#define $guard"
 	echo
diff --git a/scripts/syscallnr.sh b/scripts/syscallnr.sh
new file mode 100644
index 000000000000..3aa29e0dcc52
--- /dev/null
+++ b/scripts/syscallnr.sh
@@ -0,0 +1,74 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Generate a syscall number header.
+#
+# Each line of the syscall table should have the following format:
+#
+# NR ABI NAME [NATIVE] [COMPAT]
+#
+# NR       syscall number
+# ABI      ABI name
+# NAME     syscall name
+# NATIVE   native entry point (optional)
+# COMPAT   compat entry point (optional)
+set -e
+
+usage() {
+	echo >&2 "usage: $0 [--abis ABIS] [--prefix PREFIX] INFILE OUTFILE" >&2
+	echo >&2
+	echo >&2 "  INFILE    input syscall table"
+	echo >&2 "  OUTFILE   output header file"
+	echo >&2
+	echo >&2 "options:"
+	echo >&2 "  --abis ABIS        ABI(s) to handle (By default, all lines are handled)"
+	echo >&2 "  --prefix PREFIX    The prefix to the macro like __NR_<PREFIX><NAME>"
+	exit 1
+}
+
+# default unless specified by options
+abis=
+prefix=
+
+while [ $# -gt 0 ]
+do
+	case $1 in
+	--abis)
+		abis=$(echo "($2)" | tr ',' '|')
+		shift 2;;
+	--prefix)
+		prefix=$2
+		shift 2;;
+	-*)
+		echo "$1: unknown option" >&2
+		usage;;
+	*)
+		break;;
+	esac
+done
+
+if [ $# -ne 2 ]; then
+	usage
+fi
+
+infile="$1"
+outfile="$2"
+
+guard=_ASM_$(basename "$outfile" |
+	sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \
+	-e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g')
+
+grep -E "^[0-9A-Fa-fXx]+[[:space:]]+$abis" "$infile" | sort -n | {
+	echo "#ifndef $guard"
+	echo "#define $guard"
+	echo
+
+	max=0
+	while read nr abi name native compat ; do
+		max=$nr
+	done
+
+	echo "#define __NR_${prefix}syscalls $(($max + 1))"
+	echo
+	echo "#endif /* $guard */"
+} > "$outfile"
diff --git a/scripts/syscalltbl.sh b/scripts/syscalltbl.sh
index aa6ab156301c..6abe143889ef 100755
--- a/scripts/syscalltbl.sh
+++ b/scripts/syscalltbl.sh
@@ -52,10 +52,15 @@ outfile="$2"
 
 nxt=0
 
-grep -E "^[0-9]+[[:space:]]+$abis" "$infile" | sort -n | {
+grep -E "^[0-9]+[[:space:]]+$abis" "$infile" | {
 
 	while read nr abi name native compat ; do
 
+		if [ $nxt -gt $nr ]; then
+			echo "error: $infile: syscall table is not sorted or duplicates the same syscall number" >&2
+			exit 1
+		fi
+
 		while [ $nxt -lt $nr ]; do
 			echo "__SYSCALL($nxt, sys_ni_syscall)"
 			nxt=$((nxt + 1))
diff --git a/scripts/tools-support-relr.sh b/scripts/tools-support-relr.sh
index 45e8aa360b45..cb55878bd5b8 100755
--- a/scripts/tools-support-relr.sh
+++ b/scripts/tools-support-relr.sh
@@ -7,7 +7,8 @@ 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 $tmp_file
+$LD $tmp_file.o -shared -Bsymbolic --pack-dyn-relocs=relr \
+  --use-android-relr-tags -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.
diff --git a/scripts/tracing/draw_functrace.py b/scripts/tracing/draw_functrace.py
index 74f8aadfd4cb..7011fbe003ff 100755
--- a/scripts/tracing/draw_functrace.py
+++ b/scripts/tracing/draw_functrace.py
@@ -17,7 +17,7 @@ Usage:
 	$ cat /sys/kernel/debug/tracing/trace_pipe > ~/raw_trace_func
 	Wait some times but not too much, the script is a bit slow.
 	Break the pipe (Ctrl + Z)
-	$ scripts/draw_functrace.py < raw_trace_func > draw_functrace
+	$ scripts/tracing/draw_functrace.py < ~/raw_trace_func > draw_functrace
 	Then you have your drawn trace in draw_functrace
 """
 
@@ -103,10 +103,10 @@ def parseLine(line):
 	line = line.strip()
 	if line.startswith("#"):
 		raise CommentLineException
-	m = re.match("[^]]+?\\] +([0-9.]+): (\\w+) <-(\\w+)", line)
+	m = re.match("[^]]+?\\] +([a-z.]+) +([0-9.]+): (\\w+) <-(\\w+)", line)
 	if m is None:
 		raise BrokenLineException
-	return (m.group(1), m.group(2), m.group(3))
+	return (m.group(2), m.group(3), m.group(4))
 
 
 def main():