Merge tag 'mm-nonmm-stable-2023-11-02-14-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:
 "As usual, lots of singleton and doubleton patches all over the tree
  and there's little I can say which isn't in the individual changelogs.

  The lengthier patch series are

   - 'kdump: use generic functions to simplify crashkernel reservation
     in arch', from Baoquan He. This is mainly cleanups and
     consolidation of the 'crashkernel=' kernel parameter handling

   - After much discussion, David Laight's 'minmax: Relax type checks in
     min() and max()' is here. Hopefully reduces some typecasting and
     the use of min_t() and max_t()

   - A group of patches from Oleg Nesterov which clean up and slightly
     fix our handling of reads from /proc/PID/task/... and which remove
     task_struct.thread_group"

* tag 'mm-nonmm-stable-2023-11-02-14-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (64 commits)
  scripts/gdb/vmalloc: disable on no-MMU
  scripts/gdb: fix usage of MOD_TEXT not defined when CONFIG_MODULES=n
  .mailmap: add address mapping for Tomeu Vizoso
  mailmap: update email address for Claudiu Beznea
  tools/testing/selftests/mm/run_vmtests.sh: lower the ptrace permissions
  .mailmap: map Benjamin Poirier's address
  scripts/gdb: add lx_current support for riscv
  ocfs2: fix a spelling typo in comment
  proc: test ProtectionKey in proc-empty-vm test
  proc: fix proc-empty-vm test with vsyscall
  fs/proc/base.c: remove unneeded semicolon
  do_io_accounting: use sig->stats_lock
  do_io_accounting: use __for_each_thread()
  ocfs2: replace BUG_ON() at ocfs2_num_free_extents() with ocfs2_error()
  ocfs2: fix a typo in a comment
  scripts/show_delta: add __main__ judgement before main code
  treewide: mark stuff as __ro_after_init
  fs: ocfs2: check status values
  proc: test /proc/${pid}/statm
  compiler.h: move __is_constexpr() to compiler.h
  ...

5 files changed, 49 insertions, 25 deletions

diff --git a/scripts/gdb/linux/constants.py.in b/scripts/gdb/linux/constants.py.in
index e3517d4ab8ec..e810e0c27ff1 100644
--- a/scripts/gdb/linux/constants.py.in
+++ b/scripts/gdb/linux/constants.py.in
@@ -66,10 +66,11 @@ LX_GDBPARSED(IRQD_LEVEL)
 LX_GDBPARSED(IRQ_HIDDEN)
 
 /* linux/module.h */
-LX_GDBPARSED(MOD_TEXT)
-LX_GDBPARSED(MOD_DATA)
-LX_GDBPARSED(MOD_RODATA)
-LX_GDBPARSED(MOD_RO_AFTER_INIT)
+if IS_BUILTIN(CONFIG_MODULES):
+    LX_GDBPARSED(MOD_TEXT)
+    LX_GDBPARSED(MOD_DATA)
+    LX_GDBPARSED(MOD_RODATA)
+    LX_GDBPARSED(MOD_RO_AFTER_INIT)
 
 /* linux/mount.h */
 LX_VALUE(MNT_NOSUID)
@@ -157,3 +158,4 @@ LX_CONFIG(CONFIG_STACKDEPOT)
 LX_CONFIG(CONFIG_PAGE_OWNER)
 LX_CONFIG(CONFIG_SLUB_DEBUG)
 LX_CONFIG(CONFIG_SLAB_FREELIST_HARDENED)
+LX_CONFIG(CONFIG_MMU)
diff --git a/scripts/gdb/linux/cpus.py b/scripts/gdb/linux/cpus.py
index 255dc18cb9da..cba589e5b57d 100644
--- a/scripts/gdb/linux/cpus.py
+++ b/scripts/gdb/linux/cpus.py
@@ -179,6 +179,21 @@ def get_current_task(cpu):
         else:
             raise gdb.GdbError("Sorry, obtaining the current task is not allowed "
                                "while running in userspace(EL0)")
+    elif utils.is_target_arch("riscv"):
+        current_tp = gdb.parse_and_eval("$tp")
+        scratch_reg = gdb.parse_and_eval("$sscratch")
+
+        # by default tp points to current task
+        current_task = current_tp.cast(task_ptr_type)
+
+        # scratch register is set 0 in trap handler after entering kernel.
+        # When hart is in user mode, scratch register is pointing to task_struct.
+        # and tp is used by user mode. So when scratch register holds larger value
+        # (negative address as ulong is larger value) than tp, then use scratch register.
+        if (scratch_reg.cast(utils.get_ulong_type()) > current_tp.cast(utils.get_ulong_type())):
+            current_task = scratch_reg.cast(task_ptr_type)
+
+        return current_task.dereference()
     else:
         raise gdb.GdbError("Sorry, obtaining the current task is not yet "
                            "supported with this arch")
diff --git a/scripts/gdb/linux/vmalloc.py b/scripts/gdb/linux/vmalloc.py
index 48e4a4fae7bb..d3c8a0274d1e 100644
--- a/scripts/gdb/linux/vmalloc.py
+++ b/scripts/gdb/linux/vmalloc.py
@@ -10,8 +10,9 @@ import gdb
 import re
 from linux import lists, utils, stackdepot, constants, mm
 
-vmap_area_type = utils.CachedType('struct vmap_area')
-vmap_area_ptr_type = vmap_area_type.get_type().pointer()
+if constants.LX_CONFIG_MMU:
+    vmap_area_type = utils.CachedType('struct vmap_area')
+    vmap_area_ptr_type = vmap_area_type.get_type().pointer()
 
 def is_vmalloc_addr(x):
     pg_ops = mm.page_ops().ops
@@ -25,6 +26,9 @@ class LxVmallocInfo(gdb.Command):
         super(LxVmallocInfo, self).__init__("lx-vmallocinfo", gdb.COMMAND_DATA)
 
     def invoke(self, arg, from_tty):
+        if not constants.LX_CONFIG_MMU:
+            raise gdb.GdbError("Requires MMU support")
+
         vmap_area_list = gdb.parse_and_eval('vmap_area_list')
         for vmap_area in lists.list_for_each_entry(vmap_area_list, vmap_area_ptr_type, "list"):
             if not vmap_area['vm']:
diff --git a/scripts/get_maintainer.pl b/scripts/get_maintainer.pl
index ab123b498fd9..16d8ac6005b6 100755
--- a/scripts/get_maintainer.pl
+++ b/scripts/get_maintainer.pl
@@ -57,6 +57,7 @@ my $subsystem = 0;
 my $status = 0;
 my $letters = "";
 my $keywords = 1;
+my $keywords_in_file = 0;
 my $sections = 0;
 my $email_file_emails = 0;
 my $from_filename = 0;
@@ -272,6 +273,7 @@ if (!GetOptions(
 		'letters=s' => \$letters,
 		'pattern-depth=i' => \$pattern_depth,
 		'k|keywords!' => \$keywords,
+		'kf|keywords-in-file!' => \$keywords_in_file,
 		'sections!' => \$sections,
 		'fe|file-emails!' => \$email_file_emails,
 		'f|file' => \$from_filename,
@@ -318,6 +320,7 @@ if ($sections || $letters ne "") {
     $subsystem = 0;
     $web = 0;
     $keywords = 0;
+    $keywords_in_file = 0;
     $interactive = 0;
 } else {
     my $selections = $email + $scm + $status + $subsystem + $web;
@@ -548,16 +551,14 @@ foreach my $file (@ARGV) {
 	$file =~ s/^\Q${cur_path}\E//;	#strip any absolute path
 	$file =~ s/^\Q${lk_path}\E//;	#or the path to the lk tree
 	push(@files, $file);
-	if ($file ne "MAINTAINERS" && -f $file && $keywords) {
+	if ($file ne "MAINTAINERS" && -f $file && $keywords && $keywords_in_file) {
 	    open(my $f, '<', $file)
 		or die "$P: Can't open $file: $!\n";
 	    my $text = do { local($/) ; <$f> };
 	    close($f);
-	    if ($keywords) {
-		foreach my $line (keys %keyword_hash) {
-		    if ($text =~ m/$keyword_hash{$line}/x) {
-			push(@keyword_tvi, $line);
-		    }
+	    foreach my $line (keys %keyword_hash) {
+		if ($text =~ m/$keyword_hash{$line}/x) {
+		    push(@keyword_tvi, $line);
 		}
 	    }
 	}
@@ -919,7 +920,7 @@ sub get_maintainers {
 	}
 
 	foreach my $line (sort {$hash{$b} <=> $hash{$a}} keys %hash) {
-	    add_categories($line);
+	    add_categories($line, "");
 	    if ($sections) {
 		my $i;
 		my $start = find_starting_index($line);
@@ -947,7 +948,7 @@ sub get_maintainers {
     if ($keywords) {
 	@keyword_tvi = sort_and_uniq(@keyword_tvi);
 	foreach my $line (@keyword_tvi) {
-	    add_categories($line);
+	    add_categories($line, ":Keyword:$keyword_hash{$line}");
 	}
     }
 
@@ -1076,6 +1077,7 @@ Output type options:
 Other options:
   --pattern-depth => Number of pattern directory traversals (default: 0 (all))
   --keywords => scan patch for keywords (default: $keywords)
+  --keywords-in-file => scan file for keywords (default: $keywords_in_file)
   --sections => print all of the subsystem sections with pattern matches
   --letters => print all matching 'letter' types from all matching sections
   --mailmap => use .mailmap file (default: $email_use_mailmap)
@@ -1086,7 +1088,7 @@ Other options:
 
 Default options:
   [--email --tree --nogit --git-fallback --m --r --n --l --multiline
-   --pattern-depth=0 --remove-duplicates --rolestats]
+   --pattern-depth=0 --remove-duplicates --rolestats --keywords]
 
 Notes:
   Using "-f directory" may give unexpected results:
@@ -1312,7 +1314,7 @@ sub get_list_role {
 }
 
 sub add_categories {
-    my ($index) = @_;
+    my ($index, $suffix) = @_;
 
     my $i;
     my $start = find_starting_index($index);
@@ -1342,7 +1344,7 @@ sub add_categories {
 			if (!$hash_list_to{lc($list_address)}) {
 			    $hash_list_to{lc($list_address)} = 1;
 			    push(@list_to, [$list_address,
-					    "subscriber list${list_role}"]);
+					    "subscriber list${list_role}" . $suffix]);
 			}
 		    }
 		} else {
@@ -1352,12 +1354,12 @@ sub add_categories {
 				if ($email_moderated_list) {
 				    $hash_list_to{lc($list_address)} = 1;
 				    push(@list_to, [$list_address,
-						    "moderated list${list_role}"]);
+						    "moderated list${list_role}" . $suffix]);
 				}
 			    } else {
 				$hash_list_to{lc($list_address)} = 1;
 				push(@list_to, [$list_address,
-						"open list${list_role}"]);
+						"open list${list_role}" . $suffix]);
 			    }
 			}
 		    }
@@ -1365,19 +1367,19 @@ sub add_categories {
 	    } elsif ($ptype eq "M") {
 		if ($email_maintainer) {
 		    my $role = get_maintainer_role($i);
-		    push_email_addresses($pvalue, $role);
+		    push_email_addresses($pvalue, $role . $suffix);
 		}
 	    } elsif ($ptype eq "R") {
 		if ($email_reviewer) {
 		    my $subsystem = get_subsystem_name($i);
-		    push_email_addresses($pvalue, "reviewer:$subsystem");
+		    push_email_addresses($pvalue, "reviewer:$subsystem" . $suffix);
 		}
 	    } elsif ($ptype eq "T") {
-		push(@scm, $pvalue);
+		push(@scm, $pvalue . $suffix);
 	    } elsif ($ptype eq "W") {
-		push(@web, $pvalue);
+		push(@web, $pvalue . $suffix);
 	    } elsif ($ptype eq "S") {
-		push(@status, $pvalue);
+		push(@status, $pvalue . $suffix);
 	    }
 	}
     }
diff --git a/scripts/show_delta b/scripts/show_delta
index 28e67e178194..291ad65e3089 100755
--- a/scripts/show_delta
+++ b/scripts/show_delta
@@ -125,4 +125,5 @@ def main():
 	for line in lines:
 		print (convert_line(line, base_time),)
 
-main()
+if __name__ == "__main__":
+	main()