This is a note to let you know that I've just added the patch titled
cgroup/cpuset: Fix retval in update_cpumask()
to the 6.7-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
cgroup-cpuset-fix-retval-in-update_cpumask.patch
and it can be found in the queue-6.7 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 25125a4762835d62ba1e540c1351d447fc1f6c7c Mon Sep 17 00:00:00 2001
From: Kamalesh Babulal <kamalesh.babulal@xxxxxxxxxx>
Date: Thu, 29 Feb 2024 15:41:14 +0530
Subject: cgroup/cpuset: Fix retval in update_cpumask()
From: Kamalesh Babulal <kamalesh.babulal@xxxxxxxxxx>
commit 25125a4762835d62ba1e540c1351d447fc1f6c7c upstream.
The update_cpumask(), checks for newly requested cpumask by calling
validate_change(), which returns an error on passing an invalid set
of cpu(s). Independent of the error returned, update_cpumask() always
returns zero, suppressing the error and returning success to the user
on writing an invalid cpu range for a cpuset. Fix it by returning
retval instead, which is returned by validate_change().
Fixes: 99fe36ba6fc1 ("cgroup/cpuset: Improve temporary cpumasks handling")
Signed-off-by: Kamalesh Babulal <kamalesh.babulal@xxxxxxxxxx>
Reviewed-by: Waiman Long <longman@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx # v6.6+
Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
kernel/cgroup/cpuset.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/cgroup/cpuset.c
+++ b/kernel/cgroup/cpuset.c
@@ -2466,7 +2466,7 @@ static int update_cpumask(struct cpuset
update_partition_sd_lb(cs, old_prs);
out_free:
free_cpumasks(NULL, &tmp);
- return 0;
+ return retval;
}
/**
Patches currently in stable-queue which might be from kamalesh.babulal@xxxxxxxxxx are
queue-6.7/cgroup-cpuset-fix-retval-in-update_cpumask.patch
