diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/sev.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/x86/kernel/sev.c b/arch/x86/kernel/sev.c index a1eeaa79bf2b..8178db07a06a 100644 --- a/arch/x86/kernel/sev.c +++ b/arch/x86/kernel/sev.c @@ -261,11 +261,18 @@ 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)) |