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FAILED: Patch "LoongArch: Make cpumask_of_node() robust against NUMA_NO_NODE" failed to apply to 6.12-stable tree

PATCH Sasha Levin 2 participants 2 messages Mar 1

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Sasha Levin

author maintainer
#0 lore raw

The patch below does not apply to the 6.12-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

Thanks,
Sasha

------------------ original commit in Linus's tree ------------------

From 94b0c831eda778ae9e4f2164a8b3de485d8977bb Mon Sep 17 00:00:00 2001
From: John Garry <[email protected]>
Date: Tue, 10 Feb 2026 19:31:12 +0800
Subject: [PATCH] LoongArch: Make cpumask_of_node() robust against NUMA_NO_NODE

The arch definition of cpumask_of_node() cannot handle NUMA_NO_NODE - which is a valid index - so add a check for this.

Cc [email protected]
Signed-off-by John Garry <[email protected]>
Signed-off-by Huacai Chen <[email protected]>
---
 arch/loongarch/include/asm/topology.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
arch/loongarch/include/asm/topology.h +1 -1
index f06e7ff25bb7c..6b79d6183085a 100644
@@ -12,7 +12,7 @@
 
 extern cpumask_t cpus_on_node[];
 
-#define cpumask_of_node(node)  (&cpus_on_node[node])
+#define cpumask_of_node(node)  ((node) == NUMA_NO_NODE ? cpu_all_mask : &cpus_on_node[node])
 
 struct pci_bus;
 extern int pcibus_to_node(struct pci_bus *);
Signature · 1 line
2.51.0
maintainer
#1 lore raw

Hi, Sasha,

Quoted 5 lines · Sasha Levin

The patch below does not apply to the 6.12-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

I'm very confused because it can be applied and already here:
https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.12

Huacai

Quoted 41 lines

Thanks,
Sasha

------------------ original commit in Linus's tree ------------------

From 94b0c831eda778ae9e4f2164a8b3de485d8977bb Mon Sep 17 00:00:00 2001
From: John Garry <[email protected]>
Date: Tue, 10 Feb 2026 19:31:12 +0800
Subject: [PATCH] LoongArch: Make cpumask_of_node() robust against NUMA_NO_NODE

The arch definition of cpumask_of_node() cannot handle NUMA_NO_NODE - which is a valid index - so add a check for this.

Cc [email protected]
Signed-off-by John Garry <[email protected]>
Signed-off-by Huacai Chen <[email protected]>
---
 arch/loongarch/include/asm/topology.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
arch/loongarch/include/asm/topology.h +1 -2
index f06e7ff25bb7c..6b79d6183085a 100644
@@ -12,7 +12,7 @@
 
 extern cpumask_t cpus_on_node[];
 
-#define cpumask_of_node(node)  (&cpus_on_node[node])
+#define cpumask_of_node(node)  ((node) == NUMA_NO_NODE ? cpu_all_mask : &cpus_on_node[node])
 
 struct pci_bus;
 extern int pcibus_to_node(struct pci_bus *);
--

2.51.0