On Thu, Jan 23, 2020 at 09:14:20AM +0100, Jiri Slaby wrote: > On 14. 11. 19, 22:27, Kees Cook wrote: > > On Tue, Nov 12, 2019 at 01:21:54PM -0800, Kees Cook wrote: > >> How is iucv the only network protocol that has run into this? Do others > >> use a bounce buffer? > > > > Another solution would be to use a dedicated kmem cache (instead of the > > shared kmalloc dma one)? > > Has there been any conclusion to this thread yet? For the time being, we > disabled HARDENED_USERCOPY on s390... > > https://lore.kernel.org/kernel-hardening/9519edb7-456a-a2fa-659e-3e5a1ff89466@xxxxxxx/ I haven't heard anything new. What did people think of a separate kmem cache? -- Kees Cook
