Messages in this thread Patch in this message | | | From | Kangjie Lu <> | Subject | [PATCH] net: rtlwifi: fix a potential NULL pointer dereference | Date | Tue, 12 Mar 2019 02:56:33 -0500 |
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In case alloc_workqueue fails, the fix reports the error and returns to avoid NULL pointer dereference.
Signed-off-by: Kangjie Lu <kjlu@umn.edu> --- drivers/net/wireless/realtek/rtlwifi/base.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/net/wireless/realtek/rtlwifi/base.c b/drivers/net/wireless/realtek/rtlwifi/base.c index 217d2a7a43c7..ac746c322554 100644 --- a/drivers/net/wireless/realtek/rtlwifi/base.c +++ b/drivers/net/wireless/realtek/rtlwifi/base.c @@ -448,6 +448,11 @@ static void _rtl_init_deferred_work(struct ieee80211_hw *hw) /* <2> work queue */ rtlpriv->works.hw = hw; rtlpriv->works.rtl_wq = alloc_workqueue("%s", 0, 0, rtlpriv->cfg->name); + if (unlikely(!rtlpriv->works.rtl_wq)) { + pr_err("Failed to allocate work queue\n"); + return; + } + INIT_DELAYED_WORK(&rtlpriv->works.watchdog_wq, (void *)rtl_watchdog_wq_callback); INIT_DELAYED_WORK(&rtlpriv->works.ips_nic_off_wq, -- 2.17.1
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