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| author | Kangjie Lu <kjlu@umn.edu> | 2019-03-12 03:05:02 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-31 06:46:15 -0700 |
| commit | 31de7f1d07b5b241187d49cedb6284e4d70b4466 (patch) | |
| tree | 2df9f951dd5b44c42ccc515e47d678683be56d57 /drivers/net/wireless | |
| parent | eacec4367998f647f172383c5008e727967a06c7 (diff) | |
| download | linux-stable-31de7f1d07b5b241187d49cedb6284e4d70b4466.tar.gz linux-stable-31de7f1d07b5b241187d49cedb6284e4d70b4466.tar.bz2 linux-stable-31de7f1d07b5b241187d49cedb6284e4d70b4466.zip | |
net: cw1200: fix a NULL pointer dereference
[ Upstream commit 0ed2a005347400500a39ea7c7318f1fea57fb3ca ]
In case create_singlethread_workqueue fails, the fix free the
hardware and returns NULL to avoid NULL pointer dereference.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/net/wireless')
| -rw-r--r-- | drivers/net/wireless/st/cw1200/main.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/wireless/st/cw1200/main.c b/drivers/net/wireless/st/cw1200/main.c index 90dc979f260b..c1608f0bf6d0 100644 --- a/drivers/net/wireless/st/cw1200/main.c +++ b/drivers/net/wireless/st/cw1200/main.c @@ -345,6 +345,11 @@ static struct ieee80211_hw *cw1200_init_common(const u8 *macaddr, mutex_init(&priv->wsm_cmd_mux); mutex_init(&priv->conf_mutex); priv->workqueue = create_singlethread_workqueue("cw1200_wq"); + if (!priv->workqueue) { + ieee80211_free_hw(hw); + return NULL; + } + sema_init(&priv->scan.lock, 1); INIT_WORK(&priv->scan.work, cw1200_scan_work); INIT_DELAYED_WORK(&priv->scan.probe_work, cw1200_probe_work); |