On Mon, Jan 03, 2022 at 10:26:32AM -0800, Nelson Elhage wrote: > The proximate bug here is arguably in the libiverbs clients that are > making the problematic registrations, but I'd like to see libiverbs be > more helpful here by rejecting non-page-aligned regions, at least in > fork-safe mode. Marking memory we don't control as `MADV_DONTFORK` is > *always* incorrect behavior, even if most of the time it may not have > immediate consequences. This is a huge ABI break. > I expect this change could pose compatibility problems for existing > libraries. Potentially it could be rolled out as a warning initially, > which would help surface the problem and correct downstreams, as well > as making it easier for administrators to debug this problem. This is all fixed in newer kernels and rdma-core's. Talk to your vendors, upgrade, etc.. Jason
