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i40e: Fix use-after-free in i40e_client_subtask()
authorYunjian Wang <wangyunjian@huawei.com>
Mon, 12 Apr 2021 14:41:18 +0000 (22:41 +0800)
committerTony Nguyen <anthony.l.nguyen@intel.com>
Fri, 7 May 2021 16:35:49 +0000 (09:35 -0700)
commit38318f23a7ef86a8b1862e5e8078c4de121960c3
tree6b42cf8cfff18559520bcaae40ffc12c7f920c29
parentae4393dfd472b194c90d75d2123105fb5ed59b04
i40e: Fix use-after-free in i40e_client_subtask()

Currently the call to i40e_client_del_instance frees the object
pf->cinst, however pf->cinst->lan_info is being accessed after
the free. Fix this by adding the missing return.

Addresses-Coverity: ("Read from pointer after free")
Fixes: 7b0b1a6d0ac9 ("i40e: Disable iWARP VSI PETCP_ENA flag on netdev down events")
Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
drivers/net/ethernet/intel/i40e/i40e_client.c