From: Jia-Ju Bai <[email protected]> Date: Tue, 30 Jul 2019 16:08:13 +0800
> In phy_led_trigger_change_speed(), there is an if statement on line 48 > to check whether phy->last_triggered is NULL: > if (!phy->last_triggered) > > When phy->last_triggered is NULL, it is used on line 52: > led_trigger_event(&phy->last_triggered->trigger, LED_OFF); > > Thus, a possible null-pointer dereference may occur. > > To fix this bug, led_trigger_event(&phy->last_triggered->trigger, > LED_OFF) is called when phy->last_triggered is not NULL. > > This bug is found by a static analysis tool STCheck written by > the OSLAB group in Tsinghua University. > > Signed-off-by: Jia-Ju Bai <[email protected]> Applied, thanks.
