From d495620feccf24dc54218219c4c7f79c8696ecaa Mon Sep 17 00:00:00 2001 Message-Id: From: Jose Abreu Date: Fri, 19 Jul 2019 12:21:44 +0200 Subject: [PATCH net] net: stmmac: Add page sanity check Add a WARN_ON() when page is NULL. Signed-off-by: Jose Abreu --- Cc: Giuseppe Cavallaro Cc: Alexandre Torgue Cc: Jose Abreu Cc: "David S. Miller" Cc: Maxime Coquelin Cc: netdev@vger.kernel.org Cc: linux-stm32@st-md-mailman.stormreply.com Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 5f1294ce0216..eac6920301e9 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -3350,6 +3350,8 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue) entry = next_entry; buf = &rx_q->buf_pool[entry]; + WARN_ON(!buf->page); + if (priv->extend_desc) p = (struct dma_desc *)(rx_q->dma_erx + entry); else -- 2.7.4