The patch titled
Subject: mm: numa_clear_kernel_node_hotplug: Add NUMA_NO_NODE check for node id
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
mm-numa_clear_kernel_node_hotplug-add-numa_no_node-check-for-node-id.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-numa_clear_kernel_node_hotplug-add-numa_no_node-check-for-node-id.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@xxxxxxxxxxxxx>
Subject: mm: numa_clear_kernel_node_hotplug: Add NUMA_NO_NODE check for node id
Date: Wed, 16 Oct 2024 18:21:01 +0900
The acquired memory blocks for reserved may include blocks outside of
memory management. In this case, the nid variable is set to NUMA_NO_NODE
(-1), so an error occurs in node_set(). This adds a check using
numa_valid_node() to numa_clear_kernel_node_hotplug() that skips
node_set() when nid is set to NUMA_NO_NODE.
Link: https://lkml.kernel.org/r/1729070461-13576-1-git-send-email-nobuhiro1.iwamatsu@xxxxxxxxxxxxx
Fixes: 87482708210f ("mm: introduce numa_memblks")
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@xxxxxxxxxxxxx>
Reviewed-by: Mike Rapoport (Microsoft) <rppt@xxxxxxxxxx>
Reviewed-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Suggested-by: Yuji Ishikawa <yuji2.ishikawa@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/numa_memblks.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/numa_memblks.c~mm-numa_clear_kernel_node_hotplug-add-numa_no_node-check-for-node-id
+++ a/mm/numa_memblks.c
@@ -349,7 +349,7 @@ static void __init numa_clear_kernel_nod
for_each_reserved_mem_region(mb_region) {
int nid = memblock_get_region_node(mb_region);
- if (nid != MAX_NUMNODES)
+ if (numa_valid_node(nid))
node_set(nid, reserved_nodemask);
}
_
Patches currently in -mm which might be from nobuhiro1.iwamatsu@xxxxxxxxxxxxx are
mm-numa_clear_kernel_node_hotplug-add-numa_no_node-check-for-node-id.patch
