On Sun, 18 Nov 2018, Jiri Kosina wrote: > On Sat, 17 Nov 2018, Jiri Kosina wrote:
> Subject: [PATCH] x86/speculation: enforce STIBP for SECCOMP tasks in lite mode > > If 'lite' mode of app2app protection from spectre_v2 is selected on > kernel command-line, we are currently applying STIBP protection to > non-dumpable tasks, and tasks that have explicitly requested such > protection via > > prctl(PR_SET_SPECULATION_CTRL, PR_SPEC_INDIR_BRANCH, PR_SPEC_ENABLE, 0, > 0); > > Let's extend this to cover also SECCOMP tasks (analogically to how we > apply SSBD protection). Right. And SSBD does not fiddle with dumpable. Willy had concerns about the (ab)use of dumpable so I'm holding off on that bit for now. Thanks, tglx