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SubjectRe: [PATCH -next V2] sysctl: returns -EINVAL when a negative value is passed to proc_doulongvec_minmax
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在 2021/12/21 3:17, Luis Chamberlain 写道:
> On Mon, Dec 20, 2021 at 05:26:27PM +0800, Baokun Li wrote:
>> When we pass a negative value to the proc_doulongvec_minmax() function,
>> the function returns 0, but the corresponding interface value does not
>> change.
>>
>> we can easily reproduce this problem with the following commands:
>> `cd /proc/sys/fs/epoll`
>> `echo -1 > max_user_watches; echo $?; cat max_user_watches`
>>
>> This function requires a non-negative number to be passed in, so when
>> a negative number is passed in, -EINVAL is returned.
>>
>> Reported-by: Hulk Robot <hulkci@huawei.com>
>> Signed-off-by: Baokun Li <libaokun1@huawei.com>
> Acked-by: Luis Chamberlain <mcgrof@kernel.org>
>
> Luis
> .

Thank you for your Ack.

--
With Best Regards,
Baokun Li

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