From 29a7b2614357393b176ef06ba5bc3ff5afc8df69 Mon Sep 17 00:00:00 2001
From: Haoxiang Li <lihaoxiang@isrc.iscas.ac.cn>
Date: Wed, 1 Apr 2026 12:02:41 +0800
Subject: [PATCH] xfs: fix a resource leak in xfs_alloc_buftarg()

In the error path, call fs_put_dax() to drop the DAX
device reference.

Fixes: 6f643c57d57c ("xfs: implement ->notify_failure() for XFS")
Cc: stable@vger.kernel.org
Signed-off-by: Haoxiang Li <lihaoxiang@isrc.iscas.ac.cn>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
---
 fs/xfs/xfs_buf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index ee8c3944015a..580d40a5ee57 100644
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -1756,6 +1756,7 @@ xfs_alloc_buftarg(
 	return btp;
 
 error_free:
+	fs_put_dax(btp->bt_daxdev, mp);
 	kfree(btp);
 	return ERR_PTR(error);
 }