mm-damon-sysfs-check-error-from-damon_sysfs_update_target.patch removed from -mm tree

The quilt patch titled
Subject: mm/damon/sysfs: check error from damon_sysfs_update_target()
has been removed from the -mm tree. Its filename was
mm-damon-sysfs-check-error-from-damon_sysfs_update_target.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: check error from damon_sysfs_update_target()
Date: Mon, 6 Nov 2023 23:34:06 +0000

Patch series "mm/damon/sysfs: fix unhandled return values".

Some of DAMON sysfs interface code is not handling return values from some functions. As a result, confusing user input handling or NULL-dereference is possible. Check those properly.

This patch (of 3):

damon_sysfs_update_target() returns error code for failures, but its caller, damon_sysfs_set_targets() is ignoring that. The update function seems making no critical change in case of such failures, but the behavior will look like DAMON sysfs is silently ignoring or only partially accepting the user input. Fix it.

---

 mm/damon/sysfs.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

@@ -1203,8 +1203,10 @@ static int damon_sysfs_set_targets(struc
 
 	damon_for_each_target_safe(t, next, ctx) {
 		if (i < sysfs_targets->nr) {
-			damon_sysfs_update_target(t, ctx,
+			err = damon_sysfs_update_target(t, ctx,
 					sysfs_targets->targets_arr[i]);
+			if (err)
+				return err;
 		} else {
 			if (damon_target_has_pid(ctx))
 				put_pid(t->pid);

_

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