Messages in this thread Patch in this message |  | | From | xiyuyang19@fudan ... | Subject | [PATCH] infiniband: i40iw: fix a potential NULL pointer dereference | Date | Thu, 26 Dec 2019 10:52:52 +0800 |
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From: Xiyu Yang <xiyuyang19@fudan.edu.cn>
in_dev_get may return a NULL object. The fix handles the situation by adding a check to avoid NULL pointer dereference on idev, as pick_local_ipaddrs does.
Signed-off-by: Xiyu Yang <xiyuyang19@fudan.edu.cn> Signed-off-by: Xin Tan <tanxin.ctf@gmail.com> --- drivers/infiniband/hw/i40iw/i40iw_main.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/infiniband/hw/i40iw/i40iw_main.c b/drivers/infiniband/hw/i40iw/i40iw_main.c index d44cf33d..18587cc 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) + return; 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, -- 2.7.4
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