Merge tag 'mm-hotfixes-stable-2023-12-07-18-47' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull misc fixes from Andrew Morton:
 "31 hotfixes. Ten of these address pre-6.6 issues and are marked
  cc:stable. The remainder address post-6.6 issues or aren't considered
  serious enough to justify backporting"

* tag 'mm-hotfixes-stable-2023-12-07-18-47' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (31 commits)
  mm/madvise: add cond_resched() in madvise_cold_or_pageout_pte_range()
  nilfs2: prevent WARNING in nilfs_sufile_set_segment_usage()
  mm/hugetlb: have CONFIG_HUGETLB_PAGE select CONFIG_XARRAY_MULTI
  scripts/gdb: fix lx-device-list-bus and lx-device-list-class
  MAINTAINERS: drop Antti Palosaari
  highmem: fix a memory copy problem in memcpy_from_folio
  nilfs2: fix missing error check for sb_set_blocksize call
  kernel/Kconfig.kexec: drop select of KEXEC for CRASH_DUMP
  units: add missing header
  drivers/base/cpu: crash data showing should depends on KEXEC_CORE
  mm/damon/sysfs-schemes: add timeout for update_schemes_tried_regions
  scripts/gdb/tasks: fix lx-ps command error
  mm/Kconfig: make userfaultfd a menuconfig
  selftests/mm: prevent duplicate runs caused by TEST_GEN_PROGS
  mm/damon/core: copy nr_accesses when splitting region
  lib/group_cpus.c: avoid acquiring cpu hotplug lock in group_cpus_evenly
  checkstack: fix printed address
  mm/memory_hotplug: fix error handling in add_memory_resource()
  mm/memory_hotplug: add missing mem_hotplug_lock
  .mailmap: add a new address mapping for Chester Lin
  ...

3 files changed, 17 insertions, 25 deletions

diff --git a/scripts/checkstack.pl b/scripts/checkstack.pl
index d83ba5d8f3f4..f27d552aec43 100755
--- a/scripts/checkstack.pl
+++ b/scripts/checkstack.pl
@@ -138,15 +138,11 @@ $total_size = 0;
 while (my $line = <STDIN>) {
 	if ($line =~ m/$funcre/) {
 		$func = $1;
-		next if $line !~ m/^($xs*)/;
+		next if $line !~ m/^($x*)/;
 		if ($total_size > $min_stack) {
 			push @stack, "$intro$total_size\n";
 		}
-
-		$addr = $1;
-		$addr =~ s/ /0/g;
-		$addr = "0x$addr";
-
+		$addr = "0x$1";
 		$intro = "$addr $func [$file]:";
 		my $padlen = 56 - length($intro);
 		while ($padlen > 0) {
diff --git a/scripts/gdb/linux/device.py b/scripts/gdb/linux/device.py
index 16376c5cfec6..0eabc5f4f8ca 100644
--- a/scripts/gdb/linux/device.py
+++ b/scripts/gdb/linux/device.py
@@ -36,26 +36,26 @@ def for_each_bus():
     for kobj in kset_for_each_object(gdb.parse_and_eval('bus_kset')):
         subsys = container_of(kobj, kset_type.get_type().pointer(), 'kobj')
         subsys_priv = container_of(subsys, subsys_private_type.get_type().pointer(), 'subsys')
-        yield subsys_priv['bus']
+        yield subsys_priv
 
 
 def for_each_class():
     for kobj in kset_for_each_object(gdb.parse_and_eval('class_kset')):
         subsys = container_of(kobj, kset_type.get_type().pointer(), 'kobj')
         subsys_priv = container_of(subsys, subsys_private_type.get_type().pointer(), 'subsys')
-        yield subsys_priv['class']
+        yield subsys_priv
 
 
 def get_bus_by_name(name):
     for item in for_each_bus():
-        if item['name'].string() == name:
+        if item['bus']['name'].string() == name:
             return item
     raise gdb.GdbError("Can't find bus type {!r}".format(name))
 
 
 def get_class_by_name(name):
     for item in for_each_class():
-        if item['name'].string() == name:
+        if item['class']['name'].string() == name:
             return item
     raise gdb.GdbError("Can't find device class {!r}".format(name))
 
@@ -70,13 +70,13 @@ def klist_for_each(klist):
 
 
 def bus_for_each_device(bus):
-    for kn in klist_for_each(bus['p']['klist_devices']):
+    for kn in klist_for_each(bus['klist_devices']):
         dp = container_of(kn, device_private_type.get_type().pointer(), 'knode_bus')
         yield dp['device']
 
 
 def class_for_each_device(cls):
-    for kn in klist_for_each(cls['p']['klist_devices']):
+    for kn in klist_for_each(cls['klist_devices']):
         dp = container_of(kn, device_private_type.get_type().pointer(), 'knode_class')
         yield dp['device']
 
@@ -103,7 +103,7 @@ class LxDeviceListBus(gdb.Command):
     def invoke(self, arg, from_tty):
         if not arg:
             for bus in for_each_bus():
-                gdb.write('bus {}:\t{}\n'.format(bus['name'].string(), bus))
+                gdb.write('bus {}:\t{}\n'.format(bus['bus']['name'].string(), bus))
                 for dev in bus_for_each_device(bus):
                     _show_device(dev, level=1)
         else:
@@ -123,7 +123,7 @@ class LxDeviceListClass(gdb.Command):
     def invoke(self, arg, from_tty):
         if not arg:
             for cls in for_each_class():
-                gdb.write("class {}:\t{}\n".format(cls['name'].string(), cls))
+                gdb.write("class {}:\t{}\n".format(cls['class']['name'].string(), cls))
                 for dev in class_for_each_device(cls):
                     _show_device(dev, level=1)
         else:
diff --git a/scripts/gdb/linux/tasks.py b/scripts/gdb/linux/tasks.py
index 17ec19e9b5bf..aa5ab6251f76 100644
--- a/scripts/gdb/linux/tasks.py
+++ b/scripts/gdb/linux/tasks.py
@@ -13,7 +13,7 @@
 
 import gdb
 
-from linux import utils
+from linux import utils, lists
 
 
 task_type = utils.CachedType("struct task_struct")
@@ -22,19 +22,15 @@ task_type = utils.CachedType("struct task_struct")
 def task_lists():
     task_ptr_type = task_type.get_type().pointer()
     init_task = gdb.parse_and_eval("init_task").address
-    t = g = init_task
+    t = init_task
 
     while True:
-        while True:
-            yield t
+        thread_head = t['signal']['thread_head']
+        for thread in lists.list_for_each_entry(thread_head, task_ptr_type, 'thread_node'):
+            yield thread
 
-            t = utils.container_of(t['thread_group']['next'],
-                                   task_ptr_type, "thread_group")
-            if t == g:
-                break
-
-        t = g = utils.container_of(g['tasks']['next'],
-                                   task_ptr_type, "tasks")
+        t = utils.container_of(t['tasks']['next'],
+                               task_ptr_type, "tasks")
         if t == init_task:
             return