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, Dan!
Serguei

On 12/19/13 5:56 AM, Daniel D. Daugherty wrote:
> On 12/19/13 1:01 AM, 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/ 
>>
>
> src/share/vm/prims/jvmtiEnvThreadState.cpp
>     No comments.
>
> Thumbs up.
>
> Dan
>
>
>>
>> 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
>>
>>
>