From: Hao Chen Date: Fri, 26 Nov 2021 12:03:16 +0000 (+0800) Subject: net: hns3: add check NULL address for page pool X-Git-Tag: v6.6.17~8727^2~2^2~2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b8af344cfea189cdc0fef41345e55aed76723615;p=platform%2Fkernel%2Flinux-rpi.git net: hns3: add check NULL address for page pool When page pool is not enabled, its address value is still NULL and page pool should not be accessed, so add a check for it. Fixes: 850bfb912a6d ("net: hns3: debugfs add support dumping page pool info") Signed-off-by: Hao Chen Signed-off-by: Guangbin Huang Signed-off-by: Jakub Kicinski --- diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c index 67364ab..fbb8a5f 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c @@ -1106,6 +1106,11 @@ hns3_dbg_page_pool_info(struct hnae3_handle *h, char *buf, int len) return -EFAULT; } + if (!priv->ring[h->kinfo.num_tqps].page_pool) { + dev_err(&h->pdev->dev, "page pool is not initialized\n"); + return -EFAULT; + } + for (i = 0; i < ARRAY_SIZE(page_pool_info_items); i++) result[i] = &data_str[i][0];