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f10e0010fa
For rcu protected pointers, we'd better add '__rcu' for them.
Once added '__rcu' tag for rcu protected pointer, the sparse tool reports
warnings.
net/xfrm/xfrm_user.c:1198:39: sparse: expected struct sock *sk
net/xfrm/xfrm_user.c:1198:39: sparse: got struct sock [noderef] <asn:4> *nlsk
[...]
So introduce a new wrapper function of nlmsg_unicast to handle type
conversions.
This patch also fixes a direct access of a rcu protected socket.
Fixes: be33690d8fcf("[XFRM]: Fix aevent related crash")
Signed-off-by: Su Yanjun <suyj.fnst@cn.fujitsu.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>