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SubjectRe: [PATCH] net: sched: Fix a possible null-pointer dereference in dequeue_func()
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On 2019/7/29 14:56, Jiri Pirko wrote:
> Mon, Jul 29, 2019 at 04:21:57AM CEST, baijiaju1990@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(&skb->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 static analysis tool STCheck written by us.
>>
>> Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
> Fixes tag, please?

Sorry, I do not know what "fixes tag" means...
I just find a possible bug and fix it in this patch.


Best wishes,
Jia-Ju Bai

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