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

The quilt patch titled
Subject: mm/damon/sysfs-schemes: handle tried region directory allocation failure
has been removed from the -mm tree. Its filename was
mm-damon-sysfs-schemes-handle-tried-region-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 region directory allocation failure
Date: Mon, 6 Nov 2023 23:34:08 +0000

DAMON sysfs interface's before_damos_apply callback (damon_sysfs_before_damos_apply()), which creates the DAMOS tried regions for each DAMOS action applied region, is not handling the allocation failure for the sysfs directory data. As a result, NULL pointer derefeence is possible. Fix it by handling the case.

---

 mm/damon/sysfs-schemes.c |    2 ++
 1 file changed, 2 insertions(+)

@@ -1826,6 +1826,8 @@ static int damon_sysfs_before_damos_appl
 		return 0;
 
 	region = damon_sysfs_scheme_region_alloc(r);
+	if (!region)
+		return 0;
 	list_add_tail(&region->list, &sysfs_regions->regions_list);
 	sysfs_regions->nr_regions++;
 	if (kobject_init_and_add(&region->kobj,

_

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