@@ -270,11 +270,18 @@ static enum es_result __vc_decode_user_insn(struct es_em_ctxt *ctxt)
int insn_bytes;
insn_bytes = insn_fetch_from_user_inatomic(ctxt->regs, buffer);
- if (insn_bytes <= 0) {
+ if (insn_bytes == 0) {
+ /* Nothing could be copied */
ctxt->fi.vector = X86_TRAP_PF;
ctxt->fi.error_code = X86_PF_INSTR | X86_PF_USER;
ctxt->fi.cr2 = ctxt->regs->ip;
return ES_EXCEPTION;
+ } else if (insn_bytes == -EINVAL) {
+ /* Effective RIP could not be calculated */
+ ctxt->fi.vector = X86_TRAP_GP;
+ ctxt->fi.error_code = 0;
+ ctxt->fi.cr2 = 0;
+ return ES_EXCEPTION;
}
if (!insn_decode_from_regs(&ctxt->insn, ctxt->regs, buffer, insn_bytes))