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cfg80211_bss_update
2013 Sep 25
1
[Bridge] [PATCH tip/core/rcu 04/13] wireless: Apply rcu_access_pointer() to avoid sparse false positive
...m: "Paul E. McKenney" <paulmck at linux.vnet.ibm.com>
The sparse checking for rcu_assign_pointer() was recently upgraded
to reject non-__kernel address spaces. This also rejects __rcu,
which is almost always the right thing to do. However, the uses in
cfg80211_combine_bsses() and cfg80211_bss_update() are legitimate:
They is assigning a pointer to an element from an RCU-protected list,
and all elements of this list are already visible to caller.
This commit therefore silences these false positives by laundering the
pointers using rcu_access_pointer() as suggested by Josh Triplett.
Reported-...