fs/ntfs3: Fix a resource leak bug in wnd_extend()

commit d68318471aa2e16222ebf492883e05a2d72b9b17 upstream.

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@vger.kernel.org
Signed-off-by: Haoxiang Li <haoxiang_li2024@163.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/ntfs3/bitmap.c b/fs/ntfs3/bitmap.c
index cf4fe21a50399b0baec20ca2682eca12a2c950e2..29b585f443f3eb14e4c335aef4d23433ad2c6c68 100644 (file)
--- a/fs/ntfs3/bitmap.c
+++ b/fs/ntfs3/bitmap.c
@@ -1399,6 +1399,7 @@ 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;