Changeset 105711 in vbox for trunk/src

Timestamp:

Aug 16, 2024 6:04:45 PM (4 months ago)

Author:

vboxsync

Message:

VMM/IEM: Ensure that the required segment is up to date in CPUM when interpreting rep outs instructions (fixes assertion and out sync guest context with a Windows XP guest and the NEM/Hyper-V backend), bugref:9993

File:

• trunk/src/VBox/VMM/VMMAll/IEMAllCImplStrInstr.cpp.h (modified) (1 diff)

trunk/src/VBox/VMM/VMMAll/IEMAllCImplStrInstr.cpp.h

@@ -1612 +1612 @@
         return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
 
+    IEM_CTX_IMPORT_RET(pVCpu, CPUMCTX_EXTRN_SREG_FROM_IDX(iEffSeg) | CPUMCTX_EXTRN_ES);
     PCCPUMSELREGHID pHid      = iemSRegGetHid(pVCpu, iEffSeg);
     uint64_t        uBaseAddr = 0; /* gcc may not be used uninitialized */