On 2017/6/5 21:31, Oleg Nesterov wrote:
> On 06/05, zhongjiang wrote:
>> --- a/kernel/signal.c
>> +++ b/kernel/signal.c
>> @@ -1395,6 +1395,12 @@ static int kill_something_info(int sig, struct siginfo *info, pid_t pid)
>>
>> read_lock(&tasklist_lock);
>> if (pid != -1) {
>> + /*
>> + * -INT_MIN is undefined, it need to exclude following case to
>> + * avoid the UBSAN detection.
>> + */
>> + if (pid == INT_MIN)
>> + return -ESRCH;
> you need to do this before read_lock(tasklist)
>
> Oleg.
>
>
> .
>
I am so sorry for disturbing.
Thanks
zhongjiang
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