Hi, On Mon 19-05-25 10:21:17, Bharat Agrawal wrote: > Hi all, > > Could anyone please help comment on the risks associated with an > application throwing the "Using mlock ulimits for SHM_HUGETLB is > deprecated" message on RHEL 8.9 with 4.18.0-513.18.1.el8_9.x86_64 > Linux kernel? This is not RHEL specific behavior. The current Linus tree has the same warning which has been added by : commit 2584e517320bd48dc8d20e38a2621a2dbe58fade : Author: Ravikiran G Thirumalai <kiran@xxxxxxxxxxxx> : Date: Tue Mar 31 15:21:26 2009 -0700 : : mm: reintroduce and deprecate rlimit based access for SHM_HUGETLB : : Allow non root users with sufficient mlock rlimits to be able to allocate : hugetlb backed shm for now. Deprecate this though. This is being : deprecated because the mlock based rlimit checks for SHM_HUGETLB is not : consistent with mmap based huge page allocations. : : Signed-off-by: Ravikiran Thirumalai <kiran@xxxxxxxxxxxx> : Reviewed-by: Mel Gorman <mel@xxxxxxxxx> : Cc: William Lee Irwin III <wli@xxxxxxxxxxxxxx> : Cc: Adam Litke <agl@xxxxxxxxxx> : Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> : Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> HTH -- Michal Hocko SUSE Labs
