Re: [PATCH v3] of_numa: fix uninitialized memory nodes causing kernel panic

[Kefeng Wang]

On 2025/8/19 15:55, Yin Tirui wrote:
> When there are memory-only nodes (nodes without CPUs), these nodes
> are not properly initialized, causing kernel panic during boot.
...
> v2: Move the changes to the of_numa related. Correct the fixes tag.
> v3: Only amend commit message with no code changes.

This part should be moved under "---",

Reviewed-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>


> Cc: stable@xxxxxxxxxxxxxxx
> Fixes: 767507654c22 ("arch_numa: switch over to numa_memblks")
> Signed-off-by: Yin Tirui <yintirui@xxxxxxxxxx>
> Acked-by: David Hildenbrand <david@xxxxxxxxxx>
> ---
>   drivers/of/of_numa.c | 5 ++++-
>   1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/of/of_numa.c b/drivers/of/of_numa.c
> index 230d5f628c1b..cd2dc8e825c9 100644
> --- a/drivers/of/of_numa.c
> +++ b/drivers/of/of_numa.c
> @@ -59,8 +59,11 @@ static int __init of_numa_parse_memory_nodes(void)
>   			r = -EINVAL;
>   		}
>   
> -		for (i = 0; !r && !of_address_to_resource(np, i, &rsrc); i++)
> +		for (i = 0; !r && !of_address_to_resource(np, i, &rsrc); i++) {
>   			r = numa_add_memblk(nid, rsrc.start, rsrc.end + 1);
> +			if (!r)
> +				node_set(nid, numa_nodes_parsed);
> +		}
>   
>   		if (!i || r) {
>   			of_node_put(np);