FAILED: Patch "NTB: ntb_transport: Fix too small buffer for debugfs_name" failed to apply to 6.12-stable tree

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 6a4b50585d74fe45d3ade1e3e86ba8aae79761a5 Mon Sep 17 00:00:00 2001
From: Koichiro Den <[email protected]>
Date: Wed, 7 Jan 2026 13:24:57 +0900
Subject: [PATCH] NTB: ntb_transport: Fix too small buffer for debugfs_name

The buffer used for "qp%d" was only 4 bytes, which truncates names like "qp10" to "qp1" and causes multiple queues to share the same directory.

Enlarge the buffer and use sizeof() to avoid truncation.

---
 drivers/ntb/ntb_transport.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

index a7dd983adf7b0..50f3b1f1b9262 100644
@@ -1252,9 +1252,9 @@ static int ntb_transport_init_queue(struct ntb_transport_ctx *nt,
 	qp->tx_max_entry = tx_size / qp->tx_max_frame;
 
 	if (nt->debugfs_node_dir) {
-		char debugfs_name[4];
+		char debugfs_name[8];
 
-		snprintf(debugfs_name, 4, "qp%d", qp_num);
+		snprintf(debugfs_name, sizeof(debugfs_name), "qp%d", qp_num);
 		qp->debugfs_dir = debugfs_create_dir(debugfs_name,
 						     nt->debugfs_node_dir);
 

2.51.0