Merge tag 'mm-hotfixes-stable-2025-10-22-12-43' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull hotfixes from Andrew Morton:
 "17 hotfixes. 12 are cc:stable and 14 are for MM.

  There's a two-patch DAMON series from SeongJae Park which addresses a
  missed check and possible memory leak. Apart from that it's all
  singletons - please see the changelogs for details"

* tag 'mm-hotfixes-stable-2025-10-22-12-43' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  csky: abiv2: adapt to new folio flags field
  mm/damon/core: use damos_commit_quota_goal() for new goal commit
  mm/damon/core: fix potential memory leak by cleaning ops_filter in damon_destroy_scheme
  hugetlbfs: move lock assertions after early returns in huge_pmd_unshare()
  vmw_balloon: indicate success when effectively deflating during migration
  mm/damon/core: fix list_add_tail() call on damon_call()
  mm/mremap: correctly account old mapping after MREMAP_DONTUNMAP remap
  mm: prevent poison consumption when splitting THP
  ocfs2: clear extent cache after moving/defragmenting extents
  mm: don't spin in add_stack_record when gfp flags don't allow
  dma-debug: don't report false positives with DMA_BOUNCE_UNALIGNED_KMALLOC
  mm/damon/sysfs: dealloc commit test ctx always
  mm/damon/sysfs: catch commit test ctx alloc failure
  hung_task: fix warnings caused by unaligned lock pointers

1 files changed, 5 insertions, 3 deletions

diff --git a/include/linux/hung_task.h b/include/linux/hung_task.h
index 34e615c76ca5..c4403eeb7144 100644
--- a/include/linux/hung_task.h
+++ b/include/linux/hung_task.h
@@ -20,6 +20,10 @@
  * always zero. So we can use these bits to encode the specific blocking
  * type.
  *
+ * Note that on architectures where this is not guaranteed, or for any
+ * unaligned lock, this tracking mechanism is silently skipped for that
+ * lock.
+ *
  * Type encoding:
  * 00 - Blocked on mutex			(BLOCKER_TYPE_MUTEX)
  * 01 - Blocked on semaphore			(BLOCKER_TYPE_SEM)
@@ -45,7 +49,7 @@ static inline void hung_task_set_blocker(void *lock, unsigned long type)
 	 * If the lock pointer matches the BLOCKER_TYPE_MASK, return
 	 * without writing anything.
 	 */
-	if (WARN_ON_ONCE(lock_ptr & BLOCKER_TYPE_MASK))
+	if (lock_ptr & BLOCKER_TYPE_MASK)
 		return;
 
 	WRITE_ONCE(current->blocker, lock_ptr | type);
@@ -53,8 +57,6 @@ static inline void hung_task_set_blocker(void *lock, unsigned long type)
 
 static inline void hung_task_clear_blocker(void)
 {
-	WARN_ON_ONCE(!READ_ONCE(current->blocker));
-
 	WRITE_ONCE(current->blocker, 0UL);
 }