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ibcore: Fix for accessing invalid network device.

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Sponsored by:	Mellanox Technologies
This commit is contained in:
Hans Petter Selasky 2017-07-03 08:29:49 +00:00
parent ddc6ee3792
commit 0faccd643c
1 changed files with 6 additions and 1 deletions
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7
sys/ofed/drivers/infiniband/core/ib_cache.c
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@ -455,8 +455,13 @@ static int __ib_cache_gid_get(struct ib_device *ib_dev, u8 port, int index,
memcpy(gid, &table->data_vec[index].gid, sizeof(*gid)); memcpy(gid, &table->data_vec[index].gid, sizeof(*gid));
if (attr) { if (attr) {
memcpy(attr, &table->data_vec[index].attr, sizeof(*attr)); memcpy(attr, &table->data_vec[index].attr, sizeof(*attr));
if (attr->ndev) /* make sure network device is valid and attached */
if (attr->ndev != NULL &&
(attr->ndev->if_flags & IFF_DYING) == 0 &&
attr->ndev->if_addr != NULL)
dev_hold(attr->ndev); dev_hold(attr->ndev);
else
attr->ndev = NULL;
} }
return 0; return 0;