Re: [PATCH v2] net: sched: Fix a possible null-pointer dereference in dequeue_func()

On 2019/7/29 16:18, Jiri Pirko wrote: Mon, Jul 29, 2019 at 10:00:18AM CEST, baijiaju1...@gmail.com wrote: In dequeue_func(), there is an if statement on line 74 to check whether skb is NULL: if (skb) When skb is NULL, it is used on line 77: prefetch(>end); Thus, a possible

Re: [PATCH v2] net: sched: Fix a possible null-pointer dereference in dequeue_func()

Mon, Jul 29, 2019 at 10:00:18AM CEST, baijiaju1...@gmail.com wrote: >In dequeue_func(), there is an if statement on line 74 to check whether >skb is NULL: >if (skb) > >When skb is NULL, it is used on line 77: >prefetch(>end); > >Thus, a possible null-pointer dereference may occur. > >To

[PATCH v2] net: sched: Fix a possible null-pointer dereference in dequeue_func()

In dequeue_func(), there is an if statement on line 74 to check whether skb is NULL: if (skb) When skb is NULL, it is used on line 77: prefetch(>end); Thus, a possible null-pointer dereference may occur. To fix this bug, skb->end is used when skb is not NULL. This bug is found by a