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| author | Luis R. Rodriguez <lrodriguez@atheros.com> | 2009-03-20 23:53:05 -0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-03-27 20:13:07 -0400 |
| commit | cc0b6fe88e99096868bdbacbf486c97299533b5a (patch) | |
| tree | effa5ad2561af91b9896970cd589f5bcba2e33d1 /net/wireless | |
| parent | 2e097dc65673ed421bbc2e49f52c125aa43a8ee6 (diff) | |
| download | blackbird-op-linux-cc0b6fe88e99096868bdbacbf486c97299533b5a.tar.gz blackbird-op-linux-cc0b6fe88e99096868bdbacbf486c97299533b5a.zip | |
cfg80211: fix incorrect assumption on last_request for 11d
The incorrect assumption is the last regulatory request
(last_request) is always a country IE when processing
country IEs. Although this is true 99% of the time the
first time this happens this could not be true.
This fixes an oops in the branch check for the last_request
when accessing drv_last_ie. The access was done under the
assumption the struct won't be null.
Note to stable: to port to 29 replace as follows, only 29 has
country IE code:
s|NL80211_REGDOM_SET_BY_COUNTRY_IE|REGDOM_SET_BY_COUNTRY_IE
Cc: stable@kernel.org
Reported-by: Quentin Armitage <Quentin@armitage.org.uk>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/wireless')
| -rw-r--r-- | net/wireless/reg.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/net/wireless/reg.c b/net/wireless/reg.c index ead9dccb5475..9afc9168748b 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -1601,6 +1601,10 @@ static bool reg_same_country_ie_hint(struct wiphy *wiphy, assert_cfg80211_lock(); + if (unlikely(last_request->initiator != + NL80211_REGDOM_SET_BY_COUNTRY_IE)) + return false; + request_wiphy = wiphy_idx_to_wiphy(last_request->wiphy_idx); if (!request_wiphy) @@ -1663,7 +1667,9 @@ void regulatory_hint_11d(struct wiphy *wiphy, * we optimize an early check to exit out early if we don't have to * do anything */ - if (likely(wiphy_idx_valid(last_request->wiphy_idx))) { + if (likely(last_request->initiator == + NL80211_REGDOM_SET_BY_COUNTRY_IE && + wiphy_idx_valid(last_request->wiphy_idx))) { struct cfg80211_registered_device *drv_last_ie; drv_last_ie = |
