[merged] mm-make-mem_dump_obj-handle-null-and-zero-sized-pointers.patch removed from -mm tree

[akpm@linux-foundation.org]

The patch titled
     Subject: mm: make mem_dump_obj() handle NULL and zero-sized pointers
has been removed from the -mm tree.  Its filename was
     mm-make-mem_dump_obj-handle-null-and-zero-sized-pointers.patch

This patch was dropped because it was merged into mainline or a subsystem tree

------------------------------------------------------
From: "Paul E. McKenney" <paulmck@kernel.org>
Subject: mm: make mem_dump_obj() handle NULL and zero-sized pointers

This commit makes mem_dump_obj() call out NULL and zero-sized pointers
specially instead of classifying them as non-paged memory.

Link: https://lkml.kernel.org/r/20210106011750.13709-2-paulmck@kernel.org
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reported-by: Andrii Nakryiko <andrii@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/util.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

--- a/mm/util.c~mm-make-mem_dump_obj-handle-null-and-zero-sized-pointers
+++ a/mm/util.c
@@ -997,7 +997,12 @@ int __weak memcmp_pages(struct page *pag
 void mem_dump_obj(void *object)
 {
 	if (!virt_addr_valid(object)) {
-		pr_cont(" non-paged (local) memory.\n");
+		if (object == NULL)
+			pr_cont(" NULL pointer.\n");
+		else if (object == ZERO_SIZE_PTR)
+			pr_cont(" zero-size pointer.\n");
+		else
+			pr_cont(" non-paged (local) memory.\n");
 		return;
 	}
 	if (kmem_valid_obj(object)) {
_

Patches currently in -mm which might be from paulmck@kernel.org are