cfg80211: fix in nl80211_set_reg()
authorLuis R. Rodriguez <lrodriguez@atheros.com>
Wed, 13 May 2009 21:04:41 +0000 (17:04 -0400)
committerJohn W. Linville <linville@tuxdriver.com>
Wed, 20 May 2009 18:46:32 +0000 (14:46 -0400)
commit61405e97788b1bc4e7c5be5b4ec04a73fc11bac2
tree468b4283c9b7b42ccd3423ab1e3ed25cb4dc16a5
parentd0e18f833d23afefb6751a21d14a2cd71d2d4d66
cfg80211: fix in nl80211_set_reg()

There is a race on access to last_request and its alpha2
through reg_is_valid_request() and us possibly processing
first another regulatory request on another CPU. We avoid
this improbably race by locking with the cfg80211_mutex as
we should have done in the first place. While at it add
the assert on locking on reg_is_valid_request().

Cc: stable@kernel.org
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
net/wireless/nl80211.c
net/wireless/reg.c