Re: [PATCH] mm: disable `vm.max_map_count' sysctl limit
From: Michal Hocko <mhocko@kernel.org>
Date: 2017-11-27 19:57:32
Also in:
linux-fsdevel, linux-mm, lkml
On Mon 27-11-17 19:32:18, Michal Hocko wrote:
On Mon 27-11-17 09:25:16, Andi Kleen wrote:
[...]
quoted
The reason the limit was there originally because it allows a DoS attack against the kernel by filling all unswappable memory up with VMAs.We can reduce the effect by accounting vmas to memory cgroups.
As it turned out we already do. vm_area_cachep = KMEM_CACHE(vm_area_struct, SLAB_PANIC|SLAB_ACCOUNT); -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>