Merge tag 'mm-hotfixes-stable-2024-12-07-22-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull misc fixes from Andrew Morton:
 "24 hotfixes.  17 are cc:stable.  15 are MM and 9 are non-MM.

  The usual bunch of singletons - please see the relevant changelogs for
  details"

* tag 'mm-hotfixes-stable-2024-12-07-22-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (24 commits)
  iio: magnetometer: yas530: use signed integer type for clamp limits
  sched/numa: fix memory leak due to the overwritten vma->numab_state
  mm/damon: fix order of arguments in damos_before_apply tracepoint
  lib: stackinit: hide never-taken branch from compiler
  mm/filemap: don't call folio_test_locked() without a reference in next_uptodate_folio()
  scatterlist: fix incorrect func name in kernel-doc
  mm: correct typo in MMAP_STATE() macro
  mm: respect mmap hint address when aligning for THP
  mm: memcg: declare do_memsw_account inline
  mm/codetag: swap tags when migrate pages
  ocfs2: update seq_file index in ocfs2_dlm_seq_next
  stackdepot: fix stack_depot_save_flags() in NMI context
  mm: open-code page_folio() in dump_page()
  mm: open-code PageTail in folio_flags() and const_folio_flags()
  mm: fix vrealloc()'s KASAN poisoning logic
  Revert "readahead: properly shorten readahead when falling back to do_page_cache_ra()"
  selftests/damon: add _damon_sysfs.py to TEST_FILES
  selftest: hugetlb_dio: fix test naming
  ocfs2: free inode when ocfs2_get_init_inode() fails
  nilfs2: fix potential out-of-bounds memory access in nilfs_find_entry()
  ...

Author: torvalds

drivers/iio/magnetometer/yamaha-yas530.c

@@ -372,6 +372,7 @@ static int yas537_measure(struct yas5xx *yas5xx, u16 *t, u16 *x, u16 *y1, u16 *y
 	u8 data[8];
 	u16 xy1y2[3];
 	s32 h[3], s[3];
+	int half_range = BIT(13);
 	int i, ret;
 
 	mutex_lock(&yas5xx->lock);
@@ -406,13 +407,13 @@ static int yas537_measure(struct yas5xx *yas5xx, u16 *t, u16 *x, u16 *y1, u16 *y
 	/* The second version of YAS537 needs to include calibration coefficients */
 	if (yas5xx->version == YAS537_VERSION_1) {
 		for (i = 0; i < 3; i++)
-			s[i] = xy1y2[i] - BIT(13);
-		h[0] = (c->k *   (128 * s[0] + c->a2 * s[1] + c->a3 * s[2])) / BIT(13);
-		h[1] = (c->k * (c->a4 * s[0] + c->a5 * s[1] + c->a6 * s[2])) / BIT(13);
-		h[2] = (c->k * (c->a7 * s[0] + c->a8 * s[1] + c->a9 * s[2])) / BIT(13);
+			s[i] = xy1y2[i] - half_range;
+		h[0] = (c->k *   (128 * s[0] + c->a2 * s[1] + c->a3 * s[2])) / half_range;
+		h[1] = (c->k * (c->a4 * s[0] + c->a5 * s[1] + c->a6 * s[2])) / half_range;
+		h[2] = (c->k * (c->a7 * s[0] + c->a8 * s[1] + c->a9 * s[2])) / half_range;
 		for (i = 0; i < 3; i++) {
-			clamp_val(h[i], -BIT(13), BIT(13) - 1);
-			xy1y2[i] = h[i] + BIT(13);
+			h[i] = clamp(h[i], -half_range, half_range - 1);
+			xy1y2[i] = h[i] + half_range;
 		}
 	}
 

fs/nilfs2/dir.c

@@ -70,7 +70,7 @@ static inline unsigned int nilfs_chunk_size(struct inode *inode)
  */
 static unsigned int nilfs_last_byte(struct inode *inode, unsigned long page_nr)
 {
-	unsigned int last_byte = inode->i_size;
+	u64 last_byte = inode->i_size;
 
 	last_byte -= page_nr << PAGE_SHIFT;
 	if (last_byte > PAGE_SIZE)

fs/ocfs2/dlmglue.c

@@ -3110,6 +3110,7 @@ static void *ocfs2_dlm_seq_next(struct seq_file *m, void *v, loff_t *pos)
 	struct ocfs2_lock_res *iter = v;
 	struct ocfs2_lock_res *dummy = &priv->p_iter_res;
 
+	(*pos)++;
 	spin_lock(&ocfs2_dlm_tracking_lock);
 	iter = ocfs2_dlm_next_res(iter, priv);
 	list_del_init(&dummy->l_debug_list);

fs/ocfs2/namei.c

@@ -200,8 +200,10 @@ static struct inode *ocfs2_get_init_inode(struct inode *dir, umode_t mode)
 	mode = mode_strip_sgid(&nop_mnt_idmap, dir, mode);
 	inode_init_owner(&nop_mnt_idmap, inode, dir, mode);
 	status = dquot_initialize(inode);
-	if (status)
+	if (status) {
+		iput(inode);
 		return ERR_PTR(status);
+	}
 
 	return inode;
 }

fs/proc/vmcore.c

@@ -414,6 +414,34 @@ static ssize_t read_vmcore(struct kiocb *iocb, struct iov_iter *iter)
 	return __read_vmcore(iter, &iocb->ki_pos);
 }
 
+/**
+ * vmcore_alloc_buf - allocate buffer in vmalloc memory
+ * @size: size of buffer
+ *
+ * If CONFIG_MMU is defined, use vmalloc_user() to allow users to mmap
+ * the buffer to user-space by means of remap_vmalloc_range().
+ *
+ * If CONFIG_MMU is not defined, use vzalloc() since mmap_vmcore() is
+ * disabled and there's no need to allow users to mmap the buffer.
+ */
+static inline char *vmcore_alloc_buf(size_t size)
+{
+#ifdef CONFIG_MMU
+	return vmalloc_user(size);
+#else
+	return vzalloc(size);
+#endif
+}
+
+/*
+ * Disable mmap_vmcore() if CONFIG_MMU is not defined. MMU is
+ * essential for mmap_vmcore() in order to map physically
+ * non-contiguous objects (ELF header, ELF note segment and memory
+ * regions in the 1st kernel pointed to by PT_LOAD entries) into
+ * virtually contiguous user-space in ELF layout.
+ */
+#ifdef CONFIG_MMU
+
 /*
  * The vmcore fault handler uses the page cache and fills data using the
  * standard __read_vmcore() function.
@@ -457,34 +485,6 @@ static vm_fault_t mmap_vmcore_fault(struct vm_fault *vmf)
 #endif
 }
 
-/**
- * vmcore_alloc_buf - allocate buffer in vmalloc memory
- * @size: size of buffer
- *
- * If CONFIG_MMU is defined, use vmalloc_user() to allow users to mmap
- * the buffer to user-space by means of remap_vmalloc_range().
- *
- * If CONFIG_MMU is not defined, use vzalloc() since mmap_vmcore() is
- * disabled and there's no need to allow users to mmap the buffer.
- */
-static inline char *vmcore_alloc_buf(size_t size)
-{
-#ifdef CONFIG_MMU
-	return vmalloc_user(size);
-#else
-	return vzalloc(size);
-#endif
-}
-
-/*
- * Disable mmap_vmcore() if CONFIG_MMU is not defined. MMU is
- * essential for mmap_vmcore() in order to map physically
- * non-contiguous objects (ELF header, ELF note segment and memory
- * regions in the 1st kernel pointed to by PT_LOAD entries) into
- * virtually contiguous user-space in ELF layout.
- */
-#ifdef CONFIG_MMU
-
 static const struct vm_operations_struct vmcore_mmap_ops = {
 	.fault = mmap_vmcore_fault,
 };

include/linux/page-flags.h

@@ -306,7 +306,7 @@ static const unsigned long *const_folio_flags(const struct folio *folio,
 {
 	const struct page *page = &folio->page;
 
-	VM_BUG_ON_PGFLAGS(PageTail(page), page);
+	VM_BUG_ON_PGFLAGS(page->compound_head & 1, page);
 	VM_BUG_ON_PGFLAGS(n > 0 && !test_bit(PG_head, &page->flags), page);
 	return &page[n].flags;
 }
@@ -315,7 +315,7 @@ static unsigned long *folio_flags(struct folio *folio, unsigned n)
 {
 	struct page *page = &folio->page;
 
-	VM_BUG_ON_PGFLAGS(PageTail(page), page);
+	VM_BUG_ON_PGFLAGS(page->compound_head & 1, page);
 	VM_BUG_ON_PGFLAGS(n > 0 && !test_bit(PG_head, &page->flags), page);
 	return &page[n].flags;
 }

include/linux/pgalloc_tag.h

@@ -231,7 +231,7 @@ static inline void pgalloc_tag_sub_pages(struct alloc_tag *tag, unsigned int nr)
 }
 
 void pgalloc_tag_split(struct folio *folio, int old_order, int new_order);
-void pgalloc_tag_copy(struct folio *new, struct folio *old);
+void pgalloc_tag_swap(struct folio *new, struct folio *old);
 
 void __init alloc_tag_sec_init(void);
 
@@ -245,7 +245,7 @@ static inline struct alloc_tag *pgalloc_tag_get(struct page *page) { return NULL
 static inline void pgalloc_tag_sub_pages(struct alloc_tag *tag, unsigned int nr) {}
 static inline void alloc_tag_sec_init(void) {}
 static inline void pgalloc_tag_split(struct folio *folio, int old_order, int new_order) {}
-static inline void pgalloc_tag_copy(struct folio *new, struct folio *old) {}
+static inline void pgalloc_tag_swap(struct folio *new, struct folio *old) {}
 
 #endif /* CONFIG_MEM_ALLOC_PROFILING */
 

include/linux/scatterlist.h

@@ -313,7 +313,7 @@ static inline void sg_dma_mark_bus_address(struct scatterlist *sg)
 }
 
 /**
- * sg_unmark_bus_address - Unmark the scatterlist entry as a bus address
+ * sg_dma_unmark_bus_address - Unmark the scatterlist entry as a bus address
  * @sg:		 SG entry
  *
  * Description:

include/linux/stackdepot.h

@@ -147,7 +147,7 @@ static inline int stack_depot_early_init(void)	{ return 0; }
  * If the provided stack trace comes from the interrupt context, only the part
  * up to the interrupt entry is saved.
  *
- * Context: Any context, but setting STACK_DEPOT_FLAG_CAN_ALLOC is required if
+ * Context: Any context, but unsetting STACK_DEPOT_FLAG_CAN_ALLOC is required if
  *          alloc_pages() cannot be used from the current context. Currently
  *          this is the case for contexts where neither %GFP_ATOMIC nor
  *          %GFP_NOWAIT can be used (NMI, raw_spin_lock).
@@ -156,7 +156,7 @@ static inline int stack_depot_early_init(void)	{ return 0; }
  */
 depot_stack_handle_t stack_depot_save_flags(unsigned long *entries,
 					    unsigned int nr_entries,
-					    gfp_t gfp_flags,
+					    gfp_t alloc_flags,
 					    depot_flags_t depot_flags);
 
 /**
@@ -175,7 +175,7 @@ depot_stack_handle_t stack_depot_save_flags(unsigned long *entries,
  * Return: Handle of the stack trace stored in depot, 0 on failure
  */
 depot_stack_handle_t stack_depot_save(unsigned long *entries,
-				      unsigned int nr_entries, gfp_t gfp_flags);
+				      unsigned int nr_entries, gfp_t alloc_flags);
 
 /**
  * __stack_depot_get_stack_record - Get a pointer to a stack_record struct

include/trace/events/damon.h

@@ -15,7 +15,7 @@ TRACE_EVENT_CONDITION(damos_before_apply,
 		unsigned int target_idx, struct damon_region *r,
 		unsigned int nr_regions, bool do_trace),
 
-	TP_ARGS(context_idx, target_idx, scheme_idx, r, nr_regions, do_trace),
+	TP_ARGS(context_idx, scheme_idx, target_idx, r, nr_regions, do_trace),
 
 	TP_CONDITION(do_trace),