Re: [PATCH] opp: fix a missing check on list iterator

[Viresh Kumar]

On 28-03-22, 15:43, Xiaomeng Tong wrote:
> No. the conditon to call opp_migrate_dentry(opp_dev, opp_table); is:
> if (!list_is_singular(&opp_table->dev_list)), 
> 
> while list_is_singlular is: !list_empty(head) && (head->next == head->prev);
> 
> so the condition is: list_empty(head) || (head->next != head->prev)
> 
> if the list is empty, the bug can be triggered.

List can't be empty here by design. It will be a huge bug in that
case, which should lead to crash somewhere.

-- 
viresh