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authorPavel Emelyanov <xemul@openvz.org>2008-04-23 11:47:15 +0400
committerJohn W. Linville <linville@tuxdriver.com>2008-04-23 21:25:35 -0400
commit1ebebea8e844d01c80b93b8ee4d696ee7c0cbc27 (patch)
tree9e246a1aa36afcd735940a07253124b138e0ed03 /lib/ts_kmp.c
parentd1d8f44a4e3c730984283c0bf4b3458e3a88c15a (diff)
mac80211: Fix race between ieee80211_rx_bss_put and lookup routines.
The put routine first decrements the users counter and then (if it is zero) locks the sta_bss_lock and removes one from the list and the hash. Thus, any of ieee80211_sta_config_auth, ieee80211_rx_bss_get or ieee80211_rx_mesh_bss_get can race with it by finding a bss that is about to get kfree-ed. Using atomic_dec_and_lock in ieee80211_rx_bss_put takes care of this race. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'lib/ts_kmp.c')
0 files changed, 0 insertions, 0 deletions