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()
  ...

11 files changed, 32 insertions, 15 deletions

diff --git a/mm/debug.c b/mm/debug.c
index aa57d3ffd4ed..95b6ab809c0e 100644
--- a/mm/debug.c
+++ b/mm/debug.c
@@ -124,19 +124,22 @@ static void __dump_page(const struct page *page)
 {
 	struct folio *foliop, folio;
 	struct page precise;
+	unsigned long head;
 	unsigned long pfn = page_to_pfn(page);
 	unsigned long idx, nr_pages = 1;
 	int loops = 5;
 
 again:
 	memcpy(&precise, page, sizeof(*page));
-	foliop = page_folio(&precise);
-	if (foliop == (struct folio *)&precise) {
+	head = precise.compound_head;
+	if ((head & 1) == 0) {
+		foliop = (struct folio *)&precise;
 		idx = 0;
 		if (!folio_test_large(foliop))
 			goto dump;
 		foliop = (struct folio *)page;
 	} else {
+		foliop = (struct folio *)(head - 1);
 		idx = folio_page_idx(foliop, page);
 	}
 
diff --git a/mm/filemap.c b/mm/filemap.c
index 7c76a123ba18..f61cf51c2238 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -3501,10 +3501,10 @@ static struct folio *next_uptodate_folio(struct xa_state *xas,
 			continue;
 		if (xa_is_value(folio))
 			continue;
-		if (folio_test_locked(folio))
-			continue;
 		if (!folio_try_get(folio))
 			continue;
+		if (folio_test_locked(folio))
+			goto skip;
 		/* Has the page moved or been split? */
 		if (unlikely(folio != xas_reload(xas)))
 			goto skip;
diff --git a/mm/gup.c b/mm/gup.c
index 746070a1d8bf..3b75e631f369 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -52,7 +52,12 @@ static inline void sanity_check_pinned_pages(struct page **pages,
 	 */
 	for (; npages; npages--, pages++) {
 		struct page *page = *pages;
-		struct folio *folio = page_folio(page);
+		struct folio *folio;
+
+		if (!page)
+			continue;
+
+		folio = page_folio(page);
 
 		if (is_zero_page(page) ||
 		    !folio_test_anon(folio))
@@ -409,6 +414,10 @@ void unpin_user_pages(struct page **pages, unsigned long npages)
 
 	sanity_check_pinned_pages(pages, npages);
 	for (i = 0; i < npages; i += nr) {
+		if (!pages[i]) {
+			nr = 1;
+			continue;
+		}
 		folio = gup_folio_next(pages, npages, i, &nr);
 		gup_put_folio(folio, nr, FOLL_PIN);
 	}
diff --git a/mm/kasan/report.c b/mm/kasan/report.c
index 50fb19ad4388..3fe77a360f1c 100644
--- a/mm/kasan/report.c
+++ b/mm/kasan/report.c
@@ -201,7 +201,7 @@ static inline void fail_non_kasan_kunit_test(void) { }
 
 #endif /* CONFIG_KUNIT */
 
-static DEFINE_SPINLOCK(report_lock);
+static DEFINE_RAW_SPINLOCK(report_lock);
 
 static void start_report(unsigned long *flags, bool sync)
 {
@@ -212,7 +212,7 @@ static void start_report(unsigned long *flags, bool sync)
 	lockdep_off();
 	/* Make sure we don't end up in loop. */
 	report_suppress_start();
-	spin_lock_irqsave(&report_lock, *flags);
+	raw_spin_lock_irqsave(&report_lock, *flags);
 	pr_err("==================================================================\n");
 }
 
@@ -222,7 +222,7 @@ static void end_report(unsigned long *flags, const void *addr, bool is_write)
 		trace_error_report_end(ERROR_DETECTOR_KASAN,
 				       (unsigned long)addr);
 	pr_err("==================================================================\n");
-	spin_unlock_irqrestore(&report_lock, *flags);
+	raw_spin_unlock_irqrestore(&report_lock, *flags);
 	if (!test_bit(KASAN_BIT_MULTI_SHOT, &kasan_flags))
 		check_panic_on_warn("KASAN");
 	switch (kasan_arg_fault) {
diff --git a/mm/memcontrol-v1.h b/mm/memcontrol-v1.h
index 0e3b82951d91..144d71b65907 100644
--- a/mm/memcontrol-v1.h
+++ b/mm/memcontrol-v1.h
@@ -38,7 +38,7 @@ void mem_cgroup_id_put_many(struct mem_cgroup *memcg, unsigned int n);
 	     iter = mem_cgroup_iter(NULL, iter, NULL))
 
 /* Whether legacy memory+swap accounting is active */
-static bool do_memsw_account(void)
+static inline bool do_memsw_account(void)
 {
 	return !cgroup_subsys_on_dfl(memory_cgrp_subsys);
 }
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index bb37cd1a51d8..04f35659717a 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1080,6 +1080,10 @@ static long migrate_to_node(struct mm_struct *mm, int source, int dest,
 
 	mmap_read_lock(mm);
 	vma = find_vma(mm, 0);
+	if (unlikely(!vma)) {
+		mmap_read_unlock(mm);
+		return 0;
+	}
 
 	/*
 	 * This does not migrate the range, but isolates all pages that
diff --git a/mm/migrate.c b/mm/migrate.c
index 2ce6b4b814df..cc68583c86f9 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -745,7 +745,7 @@ void folio_migrate_flags(struct folio *newfolio, struct folio *folio)
 		folio_set_readahead(newfolio);
 
 	folio_copy_owner(newfolio, folio);
-	pgalloc_tag_copy(newfolio, folio);
+	pgalloc_tag_swap(newfolio, folio);
 
 	mem_cgroup_migrate(folio, newfolio);
 }
diff --git a/mm/mmap.c b/mm/mmap.c
index 386429f7db5a..d32b7e701058 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -889,6 +889,7 @@ __get_unmapped_area(struct file *file, unsigned long addr, unsigned long len,
 	if (get_area) {
 		addr = get_area(file, addr, len, pgoff, flags);
 	} else if (IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE)
+		   && !addr /* no hint */
 		   && IS_ALIGNED(len, PMD_SIZE)) {
 		/* Ensures that larger anonymous mappings are THP aligned. */
 		addr = thp_get_unmapped_area_vmflags(file, addr, len,
diff --git a/mm/readahead.c b/mm/readahead.c
index 8f1cf599b572..ea650b8b02fb 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -458,8 +458,7 @@ void page_cache_ra_order(struct readahead_control *ractl,
 		struct file_ra_state *ra, unsigned int new_order)
 {
 	struct address_space *mapping = ractl->mapping;
-	pgoff_t start = readahead_index(ractl);
-	pgoff_t index = start;
+	pgoff_t index = readahead_index(ractl);
 	unsigned int min_order = mapping_min_folio_order(mapping);
 	pgoff_t limit = (i_size_read(mapping->host) - 1) >> PAGE_SHIFT;
 	pgoff_t mark = index + ra->size - ra->async_size;
@@ -522,7 +521,7 @@ void page_cache_ra_order(struct readahead_control *ractl,
 	if (!err)
 		return;
 fallback:
-	do_page_cache_ra(ractl, ra->size - (index - start), ra->async_size);
+	do_page_cache_ra(ractl, ra->size, ra->async_size);
 }
 
 static unsigned long ractl_max_pages(struct readahead_control *ractl,
diff --git a/mm/vma.c b/mm/vma.c
index 8a454a7bbc80..8e31b7e25aeb 100644
--- a/mm/vma.c
+++ b/mm/vma.c
@@ -35,7 +35,7 @@ struct mmap_state {
 		.mm = mm_,						\
 		.vmi = vmi_,						\
 		.addr = addr_,						\
-		.end = (addr_) + len,					\
+		.end = (addr_) + (len_),				\
 		.pgoff = pgoff_,					\
 		.pglen = PHYS_PFN(len_),				\
 		.flags = flags_,					\
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 7ed39d104201..f009b21705c1 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -4093,7 +4093,8 @@ void *vrealloc_noprof(const void *p, size_t size, gfp_t flags)
 		/* Zero out spare memory. */
 		if (want_init_on_alloc(flags))
 			memset((void *)p + size, 0, old_size - size);
-
+		kasan_poison_vmalloc(p + size, old_size - size);
+		kasan_unpoison_vmalloc(p, size, KASAN_VMALLOC_PROT_NORMAL);
 		return (void *)p;
 	}