Merge tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:

 - "ocfs2: give ocfs2 the ability to reclaim suballocator free bg" saves
   disk space by teaching ocfs2 to reclaim suballocator block group
   space (Heming Zhao)

 - "Add ARRAY_END(), and use it to fix off-by-one bugs" adds the
   ARRAY_END() macro and uses it in various places (Alejandro Colomar)

 - "vmcoreinfo: support VMCOREINFO_BYTES larger than PAGE_SIZE" makes
   the vmcore code future-safe, if VMCOREINFO_BYTES ever exceeds the
   page size (Pnina Feder)

 - "kallsyms: Prevent invalid access when showing module buildid" cleans
   up kallsyms code related to module buildid and fixes an invalid
   access crash when printing backtraces (Petr Mladek)

 - "Address page fault in ima_restore_measurement_list()" fixes a
   kexec-related crash that can occur when booting the second-stage
   kernel on x86 (Harshit Mogalapalli)

 - "kho: ABI headers and Documentation updates" updates the kexec
   handover ABI documentation (Mike Rapoport)

 - "Align atomic storage" adds the __aligned attribute to atomic_t and
   atomic64_t definitions to get natural alignment of both types on
   csky, m68k, microblaze, nios2, openrisc and sh (Finn Thain)

 - "kho: clean up page initialization logic" simplifies the page
   initialization logic in kho_restore_page() (Pratyush Yadav)

 - "Unload linux/kernel.h" moves several things out of kernel.h and into
   more appropriate places (Yury Norov)

 - "don't abuse task_struct.group_leader" removes the usage of
   ->group_leader when it is "obviously unnecessary" (Oleg Nesterov)

 - "list private v2 & luo flb" adds some infrastructure improvements to
   the live update orchestrator (Pasha Tatashin)

* tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (107 commits)
  watchdog/hardlockup: simplify perf event probe and remove per-cpu dependency
  procfs: fix missing RCU protection when reading real_parent in do_task_stat()
  watchdog/softlockup: fix sample ring index wrap in need_counting_irqs()
  kcsan, compiler_types: avoid duplicate type issues in BPF Type Format
  kho: fix doc for kho_restore_pages()
  tests/liveupdate: add in-kernel liveupdate test
  liveupdate: luo_flb: introduce File-Lifecycle-Bound global state
  liveupdate: luo_file: Use private list
  list: add kunit test for private list primitives
  list: add primitives for private list manipulations
  delayacct: fix uapi timespec64 definition
  panic: add panic_force_cpu= parameter to redirect panic to a specific CPU
  netclassid: use thread_group_leader(p) in update_classid_task()
  RDMA/umem: don't abuse current->group_leader
  drm/pan*: don't abuse current->group_leader
  drm/amd: kill the outdated "Only the pthreads threading model is supported" checks
  drm/amdgpu: don't abuse current->group_leader
  android/binder: use same_thread_group(proc->tsk, current) in binder_mmap()
  android/binder: don't abuse current->group_leader
  kho: skip memoryless NUMA nodes when reserving scratch areas
  ...

Author: torvalds

.editorconfig

@@ -1,8 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0-only
 
-root = true
-
-[{*.{awk,c,dts,dtsi,dtso,h,mk,s,S},Kconfig,Makefile,Makefile.*}]
+[{*.{awk,c,dts,dtsi,dtso,h,mk,rst,s,S},Kconfig,Makefile,Makefile.*}]
 charset = utf-8
 end_of_line = lf
 insert_final_newline = true

Documentation/accounting/delay-accounting.rst

@@ -107,22 +107,22 @@ Get sum and peak of delays, since system boot, for all pids with tgid 242::
 	TGID    242
 
 
-	CPU         count     real total  virtual total    delay total  delay average      delay max      delay min
-	               39      156000000      156576579        2111069          0.054ms     0.212296ms     0.031307ms
-	IO          count    delay total  delay average      delay max      delay min
-	                0              0          0.000ms     0.000000ms     0.000000ms
-	SWAP        count    delay total  delay average      delay max      delay min
-	                0              0          0.000ms     0.000000ms     0.000000ms
-	RECLAIM     count    delay total  delay average      delay max      delay min
-	                0              0          0.000ms     0.000000ms     0.000000ms
-	THRASHING   count    delay total  delay average      delay max      delay min
-	                0              0          0.000ms     0.000000ms     0.000000ms
-	COMPACT     count    delay total  delay average      delay max      delay min
-	                0              0          0.000ms     0.000000ms     0.000000ms
-	WPCOPY      count    delay total  delay average      delay max      delay min
-	              156       11215873          0.072ms     0.207403ms     0.033913ms
-	IRQ         count    delay total  delay average      delay max      delay min
-	                0              0          0.000ms     0.000000ms     0.000000ms
+	CPU         count     real total  virtual total    delay total  delay average      delay max      delay min      delay max timestamp
+	               46      188000000      192348334        4098012          0.089ms     0.429260ms     0.051205ms    2026-01-15T15:06:58
+	IO          count    delay total  delay average      delay max      delay min      delay max timestamp
+	                0              0          0.000ms     0.000000ms     0.000000ms                    N/A
+	SWAP        count    delay total  delay average      delay max      delay min      delay max timestamp
+	                0              0          0.000ms     0.000000ms     0.000000ms                    N/A
+	RECLAIM     count    delay total  delay average      delay max      delay min      delay max timestamp
+	                0              0          0.000ms     0.000000ms     0.000000ms                    N/A
+	THRASHING   count    delay total  delay average      delay max      delay min      delay max timestamp
+	                0              0          0.000ms     0.000000ms     0.000000ms                    N/A
+	COMPACT     count    delay total  delay average      delay max      delay min      delay max timestamp
+	                0              0          0.000ms     0.000000ms     0.000000ms                    N/A
+	WPCOPY      count    delay total  delay average      delay max      delay min      delay max timestamp
+	              182       19413338          0.107ms     0.547353ms     0.022462ms    2026-01-15T15:05:24
+	IRQ         count    delay total  delay average      delay max      delay min      delay max timestamp
+	                0              0          0.000ms     0.000000ms     0.000000ms                    N/A
 
 Get IO accounting for pid 1, it works only with -p::
 

Documentation/admin-guide/kernel-parameters.txt

@@ -4815,6 +4815,21 @@ Kernel parameters
 	panic_on_warn=1	panic() instead of WARN().  Useful to cause kdump
 			on a WARN().
 
+	panic_force_cpu=
+			[KNL,SMP] Force panic handling to execute on a specific CPU.
+			Format: <cpu number>
+			Some platforms require panic handling to occur on a
+			specific CPU for the crash kernel to function correctly.
+			This can be due to firmware limitations, interrupt routing
+			constraints, or platform-specific requirements where only
+			a particular CPU can safely enter the crash kernel.
+			When set, panic() will redirect execution to the specified
+			CPU before proceeding with the normal panic and kexec flow.
+			If the target CPU is offline or unavailable, panic proceeds
+			on the current CPU.
+			This option should only be used for systems with the above
+			constraints as it might cause the panic operation to be less reliable.
+
 	panic_print=	Bitmask for printing system info when panic happens.
 			User can chose combination of the following bits:
 			bit 0: print all tasks info
@@ -6989,12 +7004,12 @@ Kernel parameters
 
 	softlockup_panic=
 			[KNL] Should the soft-lockup detector generate panics.
-			Format: 0 | 1
+			Format: <int>
 
-			A value of 1 instructs the soft-lockup detector
-			to panic the machine when a soft-lockup occurs. It is
-			also controlled by the kernel.softlockup_panic sysctl
-			and CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC, which is the
+			A value of non-zero instructs the soft-lockup detector
+			to panic the machine when a soft-lockup duration exceeds
+			N thresholds. It is also controlled by the kernel.softlockup_panic
+			sysctl and CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC, which is the
 			respective build-time switch to that functionality.
 
 	softlockup_all_cpu_backtrace=

Documentation/core-api/kho/abi.rst

@@ -0,0 +1,28 @@
+.. SPDX-License-Identifier: GPL-2.0-or-later
+
+==================
+Kexec Handover ABI
+==================
+
+Core Kexec Handover ABI
+========================
+
+.. kernel-doc:: include/linux/kho/abi/kexec_handover.h
+   :doc: Kexec Handover ABI
+
+vmalloc preservation ABI
+========================
+
+.. kernel-doc:: include/linux/kho/abi/kexec_handover.h
+   :doc: Kexec Handover ABI for vmalloc Preservation
+
+memblock preservation ABI
+=========================
+
+.. kernel-doc:: include/linux/kho/abi/memblock.h
+   :doc: memblock kexec handover ABI
+
+See Also
+========
+
+- :doc:`/admin-guide/mm/kho`