Merge tag 'mm-nonmm-stable-2025-05-31-15-28' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:

 - "hung_task: extend blocking task stacktrace dump to semaphore" from
   Lance Yang enhances the hung task detector.

   The detector presently dumps the blocking tasks's stack when it is
   blocked on a mutex. Lance's series extends this to semaphores

 - "nilfs2: improve sanity checks in dirty state propagation" from
   Wentao Liang addresses a couple of minor flaws in nilfs2

 - "scripts/gdb: Fixes related to lx_per_cpu()" from Illia Ostapyshyn
   fixes a couple of issues in the gdb scripts

 - "Support kdump with LUKS encryption by reusing LUKS volume keys" from
   Coiby Xu addresses a usability problem with kdump.

   When the dump device is LUKS-encrypted, the kdump kernel may not have
   the keys to the encrypted filesystem. A full writeup of this is in
   the series [0/N] cover letter

 - "sysfs: add counters for lockups and stalls" from Max Kellermann adds
   /sys/kernel/hardlockup_count and /sys/kernel/hardlockup_count and
   /sys/kernel/rcu_stall_count

 - "fork: Page operation cleanups in the fork code" from Pasha Tatashin
   implements a number of code cleanups in fork.c

 - "scripts/gdb/symbols: determine KASLR offset on s390 during early
   boot" from Ilya Leoshkevich fixes some s390 issues in the gdb
   scripts

* tag 'mm-nonmm-stable-2025-05-31-15-28' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (67 commits)
  llist: make llist_add_batch() a static inline
  delayacct: remove redundant code and adjust indentation
  squashfs: add optional full compressed block caching
  crash_dump, nvme: select CONFIGFS_FS as built-in
  scripts/gdb/symbols: determine KASLR offset on s390 during early boot
  scripts/gdb/symbols: factor out pagination_off()
  scripts/gdb/symbols: factor out get_vmlinux()
  kernel/panic.c: format kernel-doc comments
  mailmap: update and consolidate Casey Connolly's name and email
  nilfs2: remove wbc->for_reclaim handling
  fork: define a local GFP_VMAP_STACK
  fork: check charging success before zeroing stack
  fork: clean-up naming of vm_stack/vm_struct variables in vmap stacks code
  fork: clean-up ifdef logic around stack allocation
  kernel/rcu/tree_stall: add /sys/kernel/rcu_stall_count
  kernel/watchdog: add /sys/kernel/{hard,soft}lockup_count
  x86/crash: make the page that stores the dm crypt keys inaccessible
  x86/crash: pass dm crypt keys to kdump kernel
  Revert "x86/mm: Remove unused __set_memory_prot()"
  crash_dump: retrieve dm crypt keys in kdump kernel
  ...

1 files changed, 20 insertions, 18 deletions

diff --git a/scripts/gdb/linux/symbols.py b/scripts/gdb/linux/symbols.py
index b255177301e9..2332bd8eddf1 100644
--- a/scripts/gdb/linux/symbols.py
+++ b/scripts/gdb/linux/symbols.py
@@ -38,19 +38,13 @@ if hasattr(gdb, 'Breakpoint'):
             # Disable pagination while reporting symbol (re-)loading.
             # The console input is blocked in this context so that we would
             # get stuck waiting for the user to acknowledge paged output.
-            show_pagination = gdb.execute("show pagination", to_string=True)
-            pagination = show_pagination.endswith("on.\n")
-            gdb.execute("set pagination off")
-
-            if module_name in cmd.loaded_modules:
-                gdb.write("refreshing all symbols to reload module "
-                          "'{0}'\n".format(module_name))
-                cmd.load_all_symbols()
-            else:
-                cmd.load_module_symbols(module)
-
-            # restore pagination state
-            gdb.execute("set pagination %s" % ("on" if pagination else "off"))
+            with utils.pagination_off():
+                if module_name in cmd.loaded_modules:
+                    gdb.write("refreshing all symbols to reload module "
+                              "'{0}'\n".format(module_name))
+                    cmd.load_all_symbols()
+                else:
+                    cmd.load_module_symbols(module)
 
             return False
 
@@ -60,6 +54,18 @@ def get_vmcore_s390():
         vmcore_info = 0x0e0c
         paddr_vmcoreinfo_note = gdb.parse_and_eval("*(unsigned long long *)" +
                                                    hex(vmcore_info))
+        if paddr_vmcoreinfo_note == 0 or paddr_vmcoreinfo_note & 1:
+            # In the early boot case, extract vm_layout.kaslr_offset from the
+            # vmlinux image in physical memory.
+            if paddr_vmcoreinfo_note == 0:
+                kaslr_offset_phys = 0
+            else:
+                kaslr_offset_phys = paddr_vmcoreinfo_note - 1
+            with utils.pagination_off():
+                gdb.execute("symbol-file {0} -o {1}".format(
+                    utils.get_vmlinux(), hex(kaslr_offset_phys)))
+            kaslr_offset = gdb.parse_and_eval("vm_layout.kaslr_offset")
+            return "KERNELOFFSET=" + hex(kaslr_offset)[2:]
         inferior = gdb.selected_inferior()
         elf_note = inferior.read_memory(paddr_vmcoreinfo_note, 12)
         n_namesz, n_descsz, n_type = struct.unpack(">III", elf_note)
@@ -178,11 +184,7 @@ lx-symbols command."""
                 saved_states.append({'breakpoint': bp, 'enabled': bp.enabled})
 
         # drop all current symbols and reload vmlinux
-        orig_vmlinux = 'vmlinux'
-        for obj in gdb.objfiles():
-            if (obj.filename.endswith('vmlinux') or
-                obj.filename.endswith('vmlinux.debug')):
-                orig_vmlinux = obj.filename
+        orig_vmlinux = utils.get_vmlinux()
         gdb.execute("symbol-file", to_string=True)
         kerneloffset = get_kerneloffset()
         if kerneloffset is None: