Merge branch 'akpm' (patches from Andrew)

Merge misc updates from Andrew Morton:

 - a few MM hotfixes

 - kthread, tools, scripts, ntfs and ocfs2

 - some of MM

Subsystems affected by this patch series: kthread, tools, scripts, ntfs,
ocfs2 and mm (hofixes, pagealloc, slab-generic, slab, slub, kcsan,
debug, pagecache, gup, swap, shmem, memcg, pagemap, mremap, mincore,
sparsemem, vmalloc, kasan, pagealloc, hugetlb and vmscan).

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (162 commits)
  mm: vmscan: consistent update to pgrefill
  mm/vmscan.c: fix typo
  khugepaged: khugepaged_test_exit() check mmget_still_valid()
  khugepaged: retract_page_tables() remember to test exit
  khugepaged: collapse_pte_mapped_thp() protect the pmd lock
  khugepaged: collapse_pte_mapped_thp() flush the right range
  mm/hugetlb: fix calculation of adjust_range_if_pmd_sharing_possible
  mm: thp: replace HTTP links with HTTPS ones
  mm/page_alloc: fix memalloc_nocma_{save/restore} APIs
  mm/page_alloc.c: skip setting nodemask when we are in interrupt
  mm/page_alloc: fallbacks at most has 3 elements
  mm/page_alloc: silence a KASAN false positive
  mm/page_alloc.c: remove unnecessary end_bitidx for [set|get]_pfnblock_flags_mask()
  mm/page_alloc.c: simplify pageblock bitmap access
  mm/page_alloc.c: extract the common part in pfn_to_bitidx()
  mm/page_alloc.c: replace the definition of NR_MIGRATETYPE_BITS with PB_migratetype_bits
  mm/shuffle: remove dynamic reconfiguration
  mm/memory_hotplug: document why shuffle_zone() is relevant
  mm/page_alloc: remove nr_free_pagecache_pages()
  mm: remove vm_total_pages
  ...

2 files changed, 19 insertions, 19 deletions

diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index b437a14c4942..37dcc52cf21d 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -407,7 +407,7 @@ static void crypt_iv_lmk_dtr(struct crypt_config *cc)
 		crypto_free_shash(lmk->hash_tfm);
 	lmk->hash_tfm = NULL;
 
-	kzfree(lmk->seed);
+	kfree_sensitive(lmk->seed);
 	lmk->seed = NULL;
 }
 
@@ -558,9 +558,9 @@ static void crypt_iv_tcw_dtr(struct crypt_config *cc)
 {
 	struct iv_tcw_private *tcw = &cc->iv_gen_private.tcw;
 
-	kzfree(tcw->iv_seed);
+	kfree_sensitive(tcw->iv_seed);
 	tcw->iv_seed = NULL;
-	kzfree(tcw->whitening);
+	kfree_sensitive(tcw->whitening);
 	tcw->whitening = NULL;
 
 	if (tcw->crc32_tfm && !IS_ERR(tcw->crc32_tfm))
@@ -994,8 +994,8 @@ static int crypt_iv_elephant(struct crypt_config *cc, struct dm_crypt_request *d
 
 	kunmap_atomic(data);
 out:
-	kzfree(ks);
-	kzfree(es);
+	kfree_sensitive(ks);
+	kfree_sensitive(es);
 	skcipher_request_free(req);
 	return r;
 }
@@ -2294,7 +2294,7 @@ static int crypt_set_keyring_key(struct crypt_config *cc, const char *key_string
 
 	key = request_key(type, key_desc + 1, NULL);
 	if (IS_ERR(key)) {
-		kzfree(new_key_string);
+		kfree_sensitive(new_key_string);
 		return PTR_ERR(key);
 	}
 
@@ -2304,7 +2304,7 @@ static int crypt_set_keyring_key(struct crypt_config *cc, const char *key_string
 	if (ret < 0) {
 		up_read(&key->sem);
 		key_put(key);
-		kzfree(new_key_string);
+		kfree_sensitive(new_key_string);
 		return ret;
 	}
 
@@ -2318,10 +2318,10 @@ static int crypt_set_keyring_key(struct crypt_config *cc, const char *key_string
 
 	if (!ret) {
 		set_bit(DM_CRYPT_KEY_VALID, &cc->flags);
-		kzfree(cc->key_string);
+		kfree_sensitive(cc->key_string);
 		cc->key_string = new_key_string;
 	} else
-		kzfree(new_key_string);
+		kfree_sensitive(new_key_string);
 
 	return ret;
 }
@@ -2382,7 +2382,7 @@ static int crypt_set_key(struct crypt_config *cc, char *key)
 	clear_bit(DM_CRYPT_KEY_VALID, &cc->flags);
 
 	/* wipe references to any kernel keyring key */
-	kzfree(cc->key_string);
+	kfree_sensitive(cc->key_string);
 	cc->key_string = NULL;
 
 	/* Decode key from its hex representation. */
@@ -2414,7 +2414,7 @@ static int crypt_wipe_key(struct crypt_config *cc)
 			return r;
 	}
 
-	kzfree(cc->key_string);
+	kfree_sensitive(cc->key_string);
 	cc->key_string = NULL;
 	r = crypt_setkey(cc);
 	memset(&cc->key, 0, cc->key_size * sizeof(u8));
@@ -2493,15 +2493,15 @@ static void crypt_dtr(struct dm_target *ti)
 	if (cc->dev)
 		dm_put_device(ti, cc->dev);
 
-	kzfree(cc->cipher_string);
-	kzfree(cc->key_string);
-	kzfree(cc->cipher_auth);
-	kzfree(cc->authenc_key);
+	kfree_sensitive(cc->cipher_string);
+	kfree_sensitive(cc->key_string);
+	kfree_sensitive(cc->cipher_auth);
+	kfree_sensitive(cc->authenc_key);
 
 	mutex_destroy(&cc->bio_alloc_lock);
 
 	/* Must zero key material before freeing */
-	kzfree(cc);
+	kfree_sensitive(cc);
 
 	spin_lock(&dm_crypt_clients_lock);
 	WARN_ON(!dm_crypt_clients_n);
diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c
index 5da3eb661e50..8c8d940e532e 100644
--- a/drivers/md/dm-integrity.c
+++ b/drivers/md/dm-integrity.c
@@ -3405,8 +3405,8 @@ static struct scatterlist **dm_integrity_alloc_journal_scatterlist(struct dm_int
 
 static void free_alg(struct alg_spec *a)
 {
-	kzfree(a->alg_string);
-	kzfree(a->key);
+	kfree_sensitive(a->alg_string);
+	kfree_sensitive(a->key);
 	memset(a, 0, sizeof *a);
 }
 
@@ -4337,7 +4337,7 @@ static void dm_integrity_dtr(struct dm_target *ti)
 		for (i = 0; i < ic->journal_sections; i++) {
 			struct skcipher_request *req = ic->sk_requests[i];
 			if (req) {
-				kzfree(req->iv);
+				kfree_sensitive(req->iv);
 				skcipher_request_free(req);
 			}
 		}