diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2013-10-21 09:33:35 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-04 19:05:11 (GMT) |
| commit | 9e2a3e7c5173f2c577f768304df7946de5ab79fc (patch) | |
| tree | 9355bba8ab236bf7ec10894f1689dcab8e72b449 /net/wireless | |
| parent | 722d63201bc55809c4975ea6900d62a732c47bd9 (diff) | |
| download | linux-fsl-qoriq-9e2a3e7c5173f2c577f768304df7946de5ab79fc.tar.xz | |
cfg80211: fix scheduled scan pointer access
commit 79845c662eeb95c9a180b9bd0d3ad848ee65b94c upstream.
Since rdev->sched_scan_req is dereferenced outside the
lock protecting it, this might be done at the wrong
time, causing crashes. Move the dereference to where
it should be - inside the RTNL locked section.
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/wireless')
| -rw-r--r-- | net/wireless/scan.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/wireless/scan.c b/net/wireless/scan.c index eeb7148..d4397eb 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -254,10 +254,10 @@ void __cfg80211_sched_scan_results(struct work_struct *wk) rdev = container_of(wk, struct cfg80211_registered_device, sched_scan_results_wk); - request = rdev->sched_scan_req; - rtnl_lock(); + request = rdev->sched_scan_req; + /* we don't have sched_scan_req anymore if the scan is stopping */ if (request) { if (request->flags & NL80211_SCAN_FLAG_FLUSH) { |