Thanks, I've fixed it in the code.
Regards,
Ram.
On 06/08/2016 05:21 PM, samuele.defrancesco wrote:
Hi,
The sysenter information of debug core dumps appears to be invalid.
The issue seem to come from the fact that the DBGFCORECPU sysenter
field is an union.
Index: include/VBox/vmm/dbgfcorefmt.h
===================================================================
typedef struct DBGFCORECPU
{
...
union
{
uint64_t cs;
uint64_t eip;
uint64_t esp;
} sysenter;
In fact, its initialized by copying the CPUMSYSENTER fields from the
cpu context.
Index: src/VBox/VMM/VMMR3/DBGFCoreWrite.cpp
===================================================================
static void dbgfR3GetCoreCpu(PVM pVM, PCPUMCTX pCtx, PDBGFCORECPU
pDbgfCpu)
{
...
pDbgfCpu->sysenter.cs = pCtx->SysEnter.cs;
pDbgfCpu->sysenter.eip = pCtx->SysEnter.eip;
pDbgfCpu->sysenter.esp = pCtx->SysEnter.esp;
leading to an inconsistent core dump where sysenter.cs == sysenter.eip
== systenter.esp.
Using a struct instead of an union fix the issue.
Regards,
Sam
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