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| author |   Xiyu Yang <xiyuyang19@fudan.edu.cn> | 2019-12-30 10:24:28 +0800 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@mellanox.com> | 2020-01-03 19:59:34 -0400 |
| commit | 04db1580b5e48a79e24aa51ecae0cd4b2296ec23 (patch) | |
| tree | 08077457acc21153f7e9ad2ffef94a753762bcad /drivers | |
| parent | RDMA/rxe: Fix error type of mmap_offset (diff) | |
| download | linux-dev-04db1580b5e48a79e24aa51ecae0cd4b2296ec23.tar.xz linux-dev-04db1580b5e48a79e24aa51ecae0cd4b2296ec23.zip | |
RDMA/i40iw: fix a potential NULL pointer dereference
A NULL pointer can be returned by in_dev_get(). Thus add a corresponding
check so that a NULL pointer dereference will be avoided at this place.
Fixes: 8e06af711bf2 ("i40iw: add main, hdr, status")
Link: https://lore.kernel.org/r/1577672668-46499-1-git-send-email-xiyuyang19@fudan.edu.cn
Signed-off-by: Xiyu Yang <xiyuyang19@fudan.edu.cn>
Signed-off-by: Xin Tan <tanxin.ctf@gmail.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/infiniband/hw/i40iw/i40iw_main.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/i40iw/i40iw_main.c b/drivers/infiniband/hw/i40iw/i40iw_main.c index d44cf33df81a..238614370927 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_main.c +++ b/drivers/infiniband/hw/i40iw/i40iw_main.c @@ -1225,6 +1225,8 @@ static void i40iw_add_ipv4_addr(struct i40iw_device *iwdev) const struct in_ifaddr *ifa; idev = in_dev_get(dev); + if (!idev) + continue; in_dev_for_each_ifa_rtnl(ifa, idev) { i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_CM, "IP=%pI4, vlan_id=%d, MAC=%pM\n", &ifa->ifa_address, |