From 9ffa8c105f2746a60f76dbcbe2eb82d3e5a484c9 Mon Sep 17 00:00:00 2001 From: np Date: Wed, 24 May 2017 19:19:02 +0000 Subject: [PATCH] MFC r314131: Avoid NULL dereference in a couple of sysctl handlers in ibcore. iw_cxgbe sets ib_device->dma_device to NULL (since r311880). Sponsored by: Chelsio Communications git-svn-id: svn://svn.freebsd.org/base/stable/10@318802 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f --- sys/ofed/drivers/infiniband/core/uverbs_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sys/ofed/drivers/infiniband/core/uverbs_main.c b/sys/ofed/drivers/infiniband/core/uverbs_main.c index 30b925915..0e3c4c297 100644 --- a/sys/ofed/drivers/infiniband/core/uverbs_main.c +++ b/sys/ofed/drivers/infiniband/core/uverbs_main.c @@ -782,7 +782,7 @@ show_dev_device(struct device *device, struct device_attribute *attr, char *buf) { struct ib_uverbs_device *dev = dev_get_drvdata(device); - if (!dev) + if (!dev || !dev->ib_dev->dma_device) return -ENODEV; return sprintf(buf, "0x%04x\n", @@ -795,7 +795,7 @@ show_dev_vendor(struct device *device, struct device_attribute *attr, char *buf) { struct ib_uverbs_device *dev = dev_get_drvdata(device); - if (!dev) + if (!dev || !dev->ib_dev->dma_device) return -ENODEV; return sprintf(buf, "0x%04x\n", -- 2.45.0