Messages in this thread |  | | Date | Wed, 5 Sep 2018 09:52:38 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH v3 2/3] x86/speculation: apply IBPB more strictly to avoid cross-process data leak |
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On Tue, Sep 04, 2018 at 04:42:02PM +0200, Jiri Kosina wrote: > if (tsk && tsk->mm && > tsk->mm->context.ctx_id != last_ctx_id && > - get_dumpable(tsk->mm) != SUID_DUMP_USER) > + ___ptrace_may_access(current, tsk, PTRACE_MODE_IBPB)) > indirect_branch_prediction_barrier();
See how the new (first) argument is 'current' and you could've just used the old __ptrace_may_access().
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