Merge branch 'akpm' (patches from Andrew)

Merge misc fixes from Andrew Morton:
 "23 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (23 commits)
  mm, memory_hotplug: fix off-by-one in is_pageblock_removable
  mm: don't let userspace spam allocations warnings
  slub: fix a crash with SLUB_DEBUG + KASAN_SW_TAGS
  kasan, slab: remove redundant kasan_slab_alloc hooks
  kasan, slab: make freelist stored without tags
  kasan, slab: fix conflicts with CONFIG_HARDENED_USERCOPY
  kasan: prevent tracing of tags.c
  kasan: fix random seed generation for tag-based mode
  tmpfs: fix link accounting when a tmpfile is linked in
  psi: avoid divide-by-zero crash inside virtual machines
  mm: handle lru_add_drain_all for UP properly
  mm, page_alloc: fix a division by zero error when boosting watermarks v2
  mm/debug.c: fix __dump_page() for poisoned pages
  proc, oom: do not report alien mms when setting oom_score_adj
  slub: fix SLAB_CONSISTENCY_CHECKS + KASAN_SW_TAGS
  kasan, slub: fix more conflicts with CONFIG_SLAB_FREELIST_HARDENED
  kasan, slub: fix conflicts with CONFIG_SLAB_FREELIST_HARDENED
  kasan, slub: move kasan_poison_slab hook before page_address
  kmemleak: account for tagged pointers when calculating pointer range
  kasan, kmemleak: pass tagged pointers to kmemleak
  ...

1 files changed, 3 insertions, 1 deletions

diff --git a/mm/debug.c b/mm/debug.c
index 0abb987dad9b..1611cf00a137 100644
--- a/mm/debug.c
+++ b/mm/debug.c
@@ -44,7 +44,7 @@ const struct trace_print_flags vmaflag_names[] = {
 
 void __dump_page(struct page *page, const char *reason)
 {
-	struct address_space *mapping = page_mapping(page);
+	struct address_space *mapping;
 	bool page_poisoned = PagePoisoned(page);
 	int mapcount;
 
@@ -58,6 +58,8 @@ void __dump_page(struct page *page, const char *reason)
 		goto hex_only;
 	}
 
+	mapping = page_mapping(page);
+
 	/*
 	 * Avoid VM_BUG_ON() in page_mapcount().
 	 * page->_mapcount space in struct page is used by sl[aou]b pages to