[folded-merged] lib-group_cpus-fix-null-pointer-dereference-from-group_cpus_evenly-fix.patch removed from -mm tree

[folded-merged] lib-group_cpus-fix-null-pointer-dereference-from-group_cpus_evenly-fix.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: lib-group_cpus-fix-null-pointer-dereference-from-group_cpus_evenly-fix
has been removed from the -mm tree.  Its filename was
     lib-group_cpus-fix-null-pointer-dereference-from-group_cpus_evenly-fix.patch

This patch was dropped because it was folded into lib-group_cpus-fix-null-pointer-dereference-from-group_cpus_evenly.patch

------------------------------------------------------
From: Yu Kuai <yukuai3@huawei.com>
Subject: lib-group_cpus-fix-null-pointer-dereference-from-group_cpus_evenly-fix
Date: Fri, 20 Jun 2025 09:09:58 +0800

also fix the non-SMP version

Link: https://lkml.kernel.org/r/20250620010958.1265984-1-yukuai1@huaweicloud.com
Fixes: 6a6dcae8f486 ("blk-mq: Build default queue map via group_cpus_evenly()")
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Cc: ErKun Yang <yangerkun@huawei.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Thomas Gleinxer <tglx@linutronix.de>
Cc: "zhangyi (F)" <yi.zhang@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 lib/group_cpus.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

--- a/lib/group_cpus.c~lib-group_cpus-fix-null-pointer-dereference-from-group_cpus_evenly-fix
+++ a/lib/group_cpus.c
@@ -429,8 +429,12 @@ struct cpumask *group_cpus_evenly(unsign
 #else /* CONFIG_SMP */
 struct cpumask *group_cpus_evenly(unsigned int numgrps)
 {
-	struct cpumask *masks = kcalloc(numgrps, sizeof(*masks), GFP_KERNEL);
+	struct cpumask *masks;
 
+	if (numgrps == 0)
+		return NULL;
+
+	masks = kcalloc(numgrps, sizeof(*masks), GFP_KERNEL);
 	if (!masks)
 		return NULL;
 
_

Patches currently in -mm which might be from yukuai3@huawei.com are

lib-group_cpus-fix-null-pointer-dereference-from-group_cpus_evenly.patch