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(parent: 9578583) | patch
netvsc: add rcu_read locking to netvsc callback
authorstephen hemminger <stephen@networkplumber.org>
Wed, 11 Jan 2017 17:16:32 +0000 (09:16 -0800)
committerDavid S. Miller <davem@davemloft.net>
Wed, 11 Jan 2017 21:13:53 +0000 (16:13 -0500)
commitdc15f98bec8966d9871e5619f17afae0d0ba73e2
treea4f718fefcb15433fa59f6d4add44ae220edb806tree | snapshot
parent9578583707c1ee5eec6644dcfed8db277ec47895commit | diff
netvsc: add rcu_read locking to netvsc callback

The receive callback (in tasklet context) is using RCU to get reference
to associated VF network device but this is not safe. RCU read lock
needs to be held. Found by running with full lockdep debugging
enabled.

Fixes: 7bee4a4d88db ("hv_netvsc: use RCU to protect vf_netdev")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/hyperv/netvsc_drv.c diff | blob | history
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