netvsc: fix use after free on module removal
authorstephen hemminger <stephen@networkplumber.org>
Wed, 19 Apr 2017 22:22:02 +0000 (15:22 -0700)
committerDavid S. Miller <davem@davemloft.net>
Fri, 21 Apr 2017 17:59:57 +0000 (13:59 -0400)
commit76bb5db5c749dfe19d779aac076133e821b859dd
treed844c765fe7dcdf2cafb136bcaa2f3cfb3569250
parentdfb05553a55d89e6daae9cb9abfdf4751e14d72d
netvsc: fix use after free on module removal

The NAPI data structure is embedded in the netvsc_device structure
and is freed when device is closed. There is still a reference
(in NAPI list) to this which causes a crash in netif_napi_del
when device is removed. Fix by managing NAPI instances correctly.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/hyperv/netvsc.c
drivers/net/hyperv/rndis_filter.c