Hello, Daniel. On Mon, Feb 12, 2018 at 06:00:13PM +0100, Daniel Borkmann wrote: > [ +Dennis, +Tejun ] > > Looks like we're stuck in percpu allocator with key/value size of 4 bytes > each and large number of entries (max_entries) in the reproducer in above > link. > > Could we have some __GFP_NORETRY semantics and let allocations fail instead > of triggering OOM killer?
For some part, maybe, but not generally. The virt area allocation goes down to page table allocation which is hard coded to use GFP_KERNEL in arch mm code. Thanks. -- tejun
