Author: bdrewery
Date: Wed Aug 24 02:31:03 2016
New Revision: 304719
URL: https://svnweb.freebsd.org/changeset/base/304719
Log:
MFS r304715:
MFC r304322:
[net80211] correctly lock the ifp before accessing the lladdr.
Approved by: re (gjb)
Modified:
releng/11.0/sys/net80211/ieee80211_ioctl.c
Directory Properties:
releng/11.0/ (props changed)
Modified: releng/11.0/sys/net80211/ieee80211_ioctl.c
==============================================================================
--- releng/11.0/sys/net80211/ieee80211_ioctl.c Wed Aug 24 02:29:25 2016
(r304718)
+++ releng/11.0/sys/net80211/ieee80211_ioctl.c Wed Aug 24 02:31:03 2016
(r304719)
@@ -3394,10 +3394,12 @@ ieee80211_ioctl(struct ifnet *ifp, u_lon
* Check if the MAC address was changed
* via SIOCSIFLLADDR ioctl.
*/
+ if_addr_rlock(ifp);
if ((ifp->if_flags & IFF_UP) == 0 &&
!IEEE80211_ADDR_EQ(vap->iv_myaddr, IF_LLADDR(ifp)))
IEEE80211_ADDR_COPY(vap->iv_myaddr,
IF_LLADDR(ifp));
+ if_addr_runlock(ifp);
}
break;
case SIOCADDMULTI:
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