linux-kernel - [PATCH RESEND] fs/ntfs3: Fix a resource leak bug in wnd

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Message-Id: <20250715095120.3267468-1-haoxiang_li2024@163.com>
Date: Tue, 15 Jul 2025 17:51:20 +0800
From: Haoxiang Li <haoxiang_li2024@....com>
To: almaz.alexandrovich@...agon-software.com
Cc: ntfs3@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Haoxiang Li <haoxiang_li2024@....com>,
	stable@...r.kernel.org
Subject: [PATCH RESEND] fs/ntfs3: Fix a resource leak bug in wnd_extend()

Add put_bh() to decrease the refcount of 'bh' after the job
is finished, preventing a resource leak.

Fixes: 3f3b442b5ad2 ("fs/ntfs3: Add bitmap")
Cc: stable@...r.kernel.org
Signed-off-by: Haoxiang Li <haoxiang_li2024@....com>
---
 fs/ntfs3/bitmap.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/ntfs3/bitmap.c b/fs/ntfs3/bitmap.c
index 04107b950717..65d05e6a0566 100644
--- a/fs/ntfs3/bitmap.c
+++ b/fs/ntfs3/bitmap.c
@@ -1371,6 +1371,7 @@ int wnd_extend(struct wnd_bitmap *wnd, size_t new_bits)
 		mark_buffer_dirty(bh);
 		unlock_buffer(bh);
 		/* err = sync_dirty_buffer(bh); */
+		put_bh(bh);
 
 		b0 = 0;
 		bits -= op;
-- 
2.25.1