Merge tag 'mm-nonmm-stable-2026-06-21-10-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:

 - "taskstats: fix TGID dead-thread stat retention" (Yiyang Chen)

   Fix a taskstats TGID aggregation bug where fields added in the TGID
   query path were not preserved after thread exit, and adds a kselftest
   covering the regression.

 - "lib/tests: string_helpers: Slight improvements" (Andy Shevchenko)

   Improve lib/tests/string_helpers_kunit.c a little

 - "lib/base64: decode fixes" (Josh Law)

   Address minor issues in lib/base64.c

 - "selftests/filelock: Make output more kselftestish" (Mark Brown)

   Make the output from the ofdlocks test a bit easier for tooling to
   work with. Also ignore the generated file

 - "uaccess: unify inline vs outline copy_{from,to}_user() selection"
   (Yury Norov)

   Simplify the usercopy code by removing the selectability of inlining
   copy_{from,to}_user().

 - "ocfs2: validate inline xattr header consumers" (ZhengYuan Huang)

   Fix a number of possible issues in the ocfs2 xattr code

 - "lib and lib/cmdline enhancements" (Dmitry Antipov)

   Provide additional robustness checking in the cmdline handling code
   and its in-kernel testing and selftests

 - "cleanup the RAID6 P/Q library" (Christoph Hellwig)

   Clean up the RAID6 P/Q library to match the recent updates to the
   RAID 5 XOR library and other CRC/crypto libraries

 - "ocfs2: harden inode validators against forged metadata" (Michael
   Bommarito)

   Add three structural checks to OCFS2 dinode validation so malformed
   on-disk fields are rejected before ocfs2_populate_inode() copies them
   into the in-core inode

 - "lib/raid: replace __get_free_pages() call with kmalloc()" (Mike
   Rapoport)

   Clean up the lib/raid code by using kmalloc() in more places

* tag 'mm-nonmm-stable-2026-06-21-10-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (108 commits)
  ocfs2: fix circular locking dependency in ocfs2_dio_end_io_write
  ocfs2: fix NULL h_transaction deref in ocfs2_assure_trans_credits
  lib: interval_tree_test: validate benchmark parameters
  ocfs2: avoid moving extents to occupied clusters
  treewide: fix transposed "sign" typos and update spelling.txt
  ocfs2: fix UBSAN array-index-out-of-bounds in ocfs2_sum_rightmost_rec
  fat: reject BPB volumes whose data area starts beyond total sectors
  selftests/uevent: increase __UEVENT_BUFFER_SIZE to avoid ENOBUFS on busy systems
  lib/test_firmware: allocate the configured into_buf size
  fs: efs: remove unneeded debug prints
  checkpatch: cuppress warnings when Reported-by: is followed by Link:
  MAINTAINERS: add Alexander as a kcov reviewer
  mailmap: update Alexander Sverdlin's Email addresses
  fs: fat: inode: replace sprintf() with scnprintf()
  ocfs2: fix out-of-bounds write in ocfs2_remove_refcount_extent
  ocfs2: fix race between ocfs2_control_install_private() and ocfs2_control_release()
  ocfs2/dlm: require a ref for locking_state debugfs open
  ocfs2: reject FITRIM ranges shorter than a cluster
  ocfs2: validate fast symlink target during inode read
  ocfs2: add journal NULL check in ocfs2_checkpoint_inode()
  ...

1 files changed, 40 insertions, 13 deletions

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index cc5bbd70cb84..2b7a42bbdd94 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -57,8 +57,12 @@ my %ignore_type = ();
 my @ignore = ();
 my $help = 0;
 my $configuration_file = ".checkpatch.conf";
+my $def_configuration_dirs_help = '.:$HOME:.scripts';
+(my $def_configuration_dirs = $def_configuration_dirs_help) =~ s/\$(\w+)/$ENV{$1}/g;
+my $env_config_dir = 'CHECKPATCH_CONFIG_DIR';
 my $max_line_length = 100;
 my $ignore_perl_version = 0;
+my $spdx_cxx_comments = 0;
 my $minimum_perl_version = 5.10.0;
 my $min_conf_desc_length = 4;
 my $spelling_file = "$D/spelling.txt";
@@ -135,6 +139,10 @@ Options:
                              file.  It's your fault if there's no backup or git
   --ignore-perl-version      override checking of perl version.  expect
                              runtime errors.
+  --spdx-cxx-comments        don't force C comments (/* */) for SPDX license
+                             (required by old toolchains), allow also C++
+                             comments (//).
+                             NOTE: it should *not* be used for Linux mainline.
   --codespell                Use the codespell dictionary for spelling/typos
                              (default:$codespellfile)
   --codespellfile            Use this codespell dictionary
@@ -146,6 +154,11 @@ Options:
   -h, --help, --version      display this help and exit
 
 When FILE is - read standard input.
+
+CONFIGURATION FILE
+Default configuration options can be stored in $configuration_file,
+search path: '$def_configuration_dirs_help' or in a directory specified by
+\$$env_config_dir environment variable (fallback to the default search path).
 EOM
 
 	exit($exitcode);
@@ -237,7 +250,7 @@ sub list_types {
 	exit($exitcode);
 }
 
-my $conf = which_conf($configuration_file);
+my $conf = which_conf($configuration_file, $env_config_dir, $def_configuration_dirs);
 if (-f $conf) {
 	my @conf_args;
 	open(my $conffile, '<', "$conf")
@@ -339,6 +352,7 @@ GetOptions(
 	'fix!'		=> \$fix,
 	'fix-inplace!'	=> \$fix_inplace,
 	'ignore-perl-version!' => \$ignore_perl_version,
+	'spdx-cxx-comments!' => \$spdx_cxx_comments,
 	'debug=s'	=> \%debug,
 	'test-only=s'	=> \$tst_only,
 	'codespell!'	=> \$codespell,
@@ -1529,9 +1543,15 @@ sub which {
 }
 
 sub which_conf {
-	my ($conf) = @_;
+	my ($conf, $env_key, $paths) = @_;
+	my $env_dir = $ENV{$env_key};
+
+	if (defined($env_dir) && $env_dir ne "") {
+		return "$env_dir/$conf" if (-e "$env_dir/$conf");
+		warn "$P: Can't find a readable $conf in '$env_dir', falling back to default search paths\n";
+	}
 
-	foreach my $path (split(/:/, ".:$ENV{HOME}:.scripts")) {
+	foreach my $path (split(/:/, $paths)) {
 		if (-e "$path/$conf") {
 			return "$path/$conf";
 		}
@@ -3231,10 +3251,10 @@ sub process {
 			if ($sign_off =~ /^reported(?:|-and-tested)-by:$/i) {
 				if (!defined $lines[$linenr]) {
 					WARN("BAD_REPORTED_BY_LINK",
-					     "Reported-by: should be immediately followed by Closes: with a URL to the report\n" . $herecurr . "\n");
-				} elsif ($rawlines[$linenr] !~ /^closes:\s*/i) {
+					     "Reported-by: should be immediately followed by Closes: or Link: with a URL to the report\n" . $herecurr . "\n");
+				} elsif ($rawlines[$linenr] !~ /^(closes|link):\s*/i) {
 					WARN("BAD_REPORTED_BY_LINK",
-					     "Reported-by: should be immediately followed by Closes: with a URL to the report\n" . $herecurr . $rawlines[$linenr] . "\n");
+					     "Reported-by: should be immediately followed by Closes: or Link: with a URL to the report\n" . $herecurr . $rawlines[$linenr] . "\n");
 				}
 			}
 		}
@@ -3799,26 +3819,33 @@ sub process {
 				$checklicenseline = 2;
 			} elsif ($rawline =~ /^\+/) {
 				my $comment = "";
-				if ($realfile =~ /\.(h|s|S)$/) {
-					$comment = '/*';
-				} elsif ($realfile =~ /\.(c|rs|dts|dtsi)$/) {
+				if ($realfile =~ /\.(c|rs|dts|dtsi)$/) {
 					$comment = '//';
 				} elsif (($checklicenseline == 2) || $realfile =~ /\.(sh|pl|py|awk|tc|yaml)$/) {
 					$comment = '#';
 				} elsif ($realfile =~ /\.rst$/) {
 					$comment = '..';
 				}
+				my $pattern = qr{\Q$comment\E};
+				if ($realfile =~ /\.(h|s|S)$/) {
+					$comment = '/*';
+					$pattern = qr{/\*};
+					if ($spdx_cxx_comments) {
+						$comment = '// or /*';
+						$pattern = qr{//|/\*};
+					}
+				}
 
 # check SPDX comment style for .[chsS] files
 				if ($realfile =~ /\.[chsS]$/ &&
 				    $rawline =~ /SPDX-License-Identifier:/ &&
-				    $rawline !~ m@^\+\s*\Q$comment\E\s*@) {
+				    $rawline !~ m@^\+\s*$pattern\s*@) {
 					WARN("SPDX_LICENSE_TAG",
 					     "Improper SPDX comment style for '$realfile', please use '$comment' instead\n" . $herecurr);
 				}
 
 				if ($comment !~ /^$/ &&
-				    $rawline !~ m@^\+\Q$comment\E SPDX-License-Identifier: @) {
+				    $rawline !~ m@^\+$pattern SPDX-License-Identifier: @) {
 					WARN("SPDX_LICENSE_TAG",
 					     "Missing or malformed SPDX-License-Identifier tag in line $checklicenseline\n" . $herecurr);
 				} elsif ($rawline =~ /(SPDX-License-Identifier: .*)/) {
@@ -4154,7 +4181,7 @@ sub process {
 			$pl =~ s/\b(?:$Attribute|$Sparse)\b//g;
 			if (($pl =~ /^\+\s+$Declare\s*$Ident\s*[=,;:\[]/ ||
 			# function pointer declarations
-			     $pl =~ /^\+\s+$Declare\s*\(\s*\*\s*$Ident\s*\)\s*[=,;:\[\(]/ ||
+			     $pl =~ /^\+\s+$Declare\s*\(\s*\*\s*$Ident(?:\s*\[\s*(?:$Ident|$Constant)?\s*\])?\s*\)\s*[=,;:\[\(]/ ||
 			# foo bar; where foo is some local typedef or #define
 			     $pl =~ /^\+\s+$Ident(?:\s+|\s*\*\s*)$Ident\s*[=,;\[]/ ||
 			# known declaration macros
@@ -4168,7 +4195,7 @@ sub process {
 			# looks like a declaration
 			    !($sl =~ /^\+\s+$Declare\s*$Ident\s*[=,;:\[]/ ||
 			# function pointer declarations
-			      $sl =~ /^\+\s+$Declare\s*\(\s*\*\s*$Ident\s*\)\s*[=,;:\[\(]/ ||
+			      $sl =~ /^\+\s+$Declare\s*\(\s*\*\s*$Ident(?:\s*\[\s*(?:$Ident|$Constant)?\s*\])?\s*\)\s*[=,;:\[\(]/ ||
 			# foo bar; where foo is some local typedef or #define
 			      $sl =~ /^\+\s+$Ident(?:\s+|\s*\*\s*)$Ident\s*[=,;\[]/ ||
 			# known declaration macros