hv/netvsc: Fix NULL dereference at single queue mode fallback
commitb19b46346f483ae055fa027cb2d5c2ca91484b91
authorTakashi Iwai <tiwai@suse.de>
Tue, 14 Aug 2018 17:10:50 +0000 (14 19:10 +0200)
committerDavid S. Miller <davem@davemloft.net>
Tue, 14 Aug 2018 17:24:12 +0000 (14 10:24 -0700)
treeb26dffe551e19bc43255104bf6b8e4b74a9a97a8
parent4597b62f7a60d912a2bd00ca574e6bc7b87be905
hv/netvsc: Fix NULL dereference at single queue mode fallback

The recent commit 916c5e1413be ("hv/netvsc: fix handling of fallback
to single queue mode") tried to fix the fallback behavior to a single
queue mode, but it changed the function to return zero incorrectly,
while the function should return an object pointer.  Eventually this
leads to a NULL dereference at the callers that expect non-NULL
value.

Fix it by returning the proper net_device object.

Fixes: 916c5e1413be ("hv/netvsc: fix handling of fallback to single queue mode")
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/hyperv/rndis_filter.c