On Thu, 2020-04-09 at 13:58 +0530, madhuparnabhowmik10@xxxxxxxxx wrote: > From: Madhuparna Bhowmik <madhuparnabhowmik10@xxxxxxxxx> > > This patch fixes the following warning: > > WARNING: suspicious RCU usage > [ 84.530619] 5.6.0+ #4 Not tainted > [ 84.530637] ----------------------------- > [ 84.530658] net/mac80211/scan.c:454 RCU-list traversed in non-reader section!! > > As local->mtx is held in __ieee80211_scan_completed() Yeah, but is that really the right lock? I think it should be RTNL or iflist_mtx for the interface list. (Not that this is necessarily a good idea - we perhaps should clean up and significantly reduce the number of locks used here.) johannes
