Review Request (XS) 8030027: nsk/jvmti/scenarios/hotswap/HS101/hs101t006 Crashed the vm on Linux-amd64: SIGSEGV in JavaThread::last_java_vframe(RegisterMap*)+0xfa

[serguei.spitsyn at oracle.com]

Thanks, Staffan!
Serguei

On 12/19/13 4:29 AM, Staffan Larsen wrote:
> Looks good!
>
> Thanks,
> /Staffan
>
> On 19 dec 2013, at 09:01, serguei.spitsyn at oracle.com wrote:
>
>> Please, review the fix for:
>>   https://bugs.openjdk.java.net/browse/JDK-8030027
>>
>>
>> Open webrev:
>> http://cr.openjdk.java.net/~sspitsyn/webrevs/2013/hotspot/8030027-JVMTI-HS101.1/
>>
>> Summary:
>>   The bug is that the JavaThread::last_java_vframe (called from the VMOp_GetCurrentLocation)
>>   crashes on the target thread stack that is non-walkable because the thread is exiting.
>>   The fix is to check a condition !_thread->is_exiting() in the VMOp_GetCurrentLocation.
>>   The fix is for JDK 9.
>>
>> Testing:
>>   The originally failing test nsk/jvmti/scenarios/hotswap/HS101/hs101t006
>>   In progress: nsk.jvmti, nsk.jdi, nsk.jdwp
>>
>>
>> Thanks,
>> Serguei
>>