CVE-2023-54268

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> debugobjects: Don&amp;#39;t wake up kswapd from fill_pool()<br /> <br /> syzbot is reporting a lockdep warning in fill_pool() because the allocation<br /> from debugobjects is using GFP_ATOMIC, which is (__GFP_HIGH | __GFP_KSWAPD_RECLAIM)<br /> and therefore tries to wake up kswapd, which acquires kswapd_wait::lock.<br /> <br /> Since fill_pool() might be called with arbitrary locks held, fill_pool()<br /> should not assume that acquiring kswapd_wait::lock is safe.<br /> <br /> Use __GFP_HIGH instead and remove __GFP_NORETRY as it is pointless for<br /> !__GFP_DIRECT_RECLAIM allocation.