mm-damon-sysfs-schemes-handle-tried-regions-sysfs-directory-allocation-failure.patch removed from -mm tree

The quilt patch titled
Subject: mm/damon/sysfs-schemes: handle tried regions sysfs directory allocation failure
has been removed from the -mm tree. Its filename was
mm-damon-sysfs-schemes-handle-tried-regions-sysfs-directory-allocation-failure.patch

This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: SeongJae Park <[email protected]>
Subject: mm/damon/sysfs-schemes: handle tried regions sysfs directory allocation failure
Date: Mon, 6 Nov 2023 23:34:07 +0000

DAMOS tried regions sysfs directory allocation function (damon_sysfs_scheme_regions_alloc()) is not handling the memory allocation failure. In the case, the code will dereference NULL pointer. Handle the failure to avoid such invalid access.

---

 mm/damon/sysfs-schemes.c |    3 +++
 1 file changed, 3 insertions(+)

@@ -162,6 +162,9 @@ damon_sysfs_scheme_regions_alloc(void)
 	struct damon_sysfs_scheme_regions *regions = kmalloc(sizeof(*regions),
 			GFP_KERNEL);
 
+	if (!regions)
+		return NULL;
+
 	regions->kobj = (struct kobject){};
 	INIT_LIST_HEAD(&regions->regions_list);
 	regions->nr_regions = 0;

_

Patches currently in -mm which might be from [email protected] are