From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2376E168CF for ; Mon, 8 May 2023 11:16:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7EF0AC433A0; Mon, 8 May 2023 11:16:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1683544582; bh=0EtESPJ9ns3FZ29SfoOrK+BwKaLqd1DG0mtlEAfj15s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EQ1NH1Ve1oLttepzVobtnx1mb+3Qzsa+Q3aeJsX6xugq75I+TzcvWyCQqwsCzSYwo gaLzsmlhQztJ6O3Olcc6B63u+eJaEBU5mMsmtQij4sh7i6q/wzVGx1LqgANJMRdoUI k68At3Uh3EGZnOi4RbU8qUe1Hqy1A9ro02QwffwY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Zhengchao Shao , Simon Horman , Paolo Abeni , Sasha Levin Subject: [PATCH 6.3 457/694] net: libwx: fix memory leak in wx_setup_rx_resources Date: Mon, 8 May 2023 11:44:52 +0200 Message-Id: <20230508094448.456184109@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230508094432.603705160@linuxfoundation.org> References: <20230508094432.603705160@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Zhengchao Shao [ Upstream commit e315e7b83a22043bffee450437d7089ef373cbf6 ] When wx_alloc_page_pool() failed in wx_setup_rx_resources(), it doesn't release DMA buffer. Add dma_free_coherent() in the error path to release the DMA buffer. Fixes: 850b971110b2 ("net: libwx: Allocate Rx and Tx resources") Signed-off-by: Zhengchao Shao Reviewed-by: Simon Horman Link: https://lore.kernel.org/r/20230418065450.2268522-1-shaozhengchao@huawei.com Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin --- drivers/net/ethernet/wangxun/libwx/wx_lib.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/wangxun/libwx/wx_lib.c b/drivers/net/ethernet/wangxun/libwx/wx_lib.c index eb89a274083e7..1e8d8b7b0c62e 100644 --- a/drivers/net/ethernet/wangxun/libwx/wx_lib.c +++ b/drivers/net/ethernet/wangxun/libwx/wx_lib.c @@ -1798,10 +1798,13 @@ static int wx_setup_rx_resources(struct wx_ring *rx_ring) ret = wx_alloc_page_pool(rx_ring); if (ret < 0) { dev_err(rx_ring->dev, "Page pool creation failed: %d\n", ret); - goto err; + goto err_desc; } return 0; + +err_desc: + dma_free_coherent(dev, rx_ring->size, rx_ring->desc, rx_ring->dma); err: kvfree(rx_ring->rx_buffer_info); rx_ring->rx_buffer_info = NULL; -- 2.39.2