Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 4.14 039/167] net: cw1200: fix a NULL pointer dereference | Date | Wed, 22 May 2019 15:26:34 -0400 |
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From: Kangjie Lu <kjlu@umn.edu>
[ 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> --- drivers/net/wireless/st/cw1200/main.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/net/wireless/st/cw1200/main.c b/drivers/net/wireless/st/cw1200/main.c index dc478cedbde0d..84624c812a15f 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); -- 2.20.1
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