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Bug ID: 7051798 SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
7051798 : SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)

Details
Type:
Bug
Submit Date:
2011-06-06
Status:
Closed
Updated Date:
2011-11-28
Project Name:
JDK
Resolved Date:
2011-11-28
Component:
hotspot
OS:
generic
Sub-Component:
svc
CPU:
generic
Priority:
P3
Resolution:
Fixed
Affected Versions:
7
Fixed Versions:
hs22

Related Reports
Backport:
JDK-2215448 - SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
Backport:
JDK-2214857 - SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
Relates:
JDK-7093690 - JSR292: SA-JDI AssertionFailure: Expected raw sp likely got real sp, value was

Sub Tasks

Description
SA-JDI fails to get a stack trace:

# ERROR: Test caught an exception: 
# ERROR: java.lang.NullPointerException
# ERROR: 	at sun.jvm.hotspot.runtime.Frame.addressOfStackSlot(Frame.java:224)
# ERROR: 	at sun.jvm.hotspot.runtime.x86.X86Frame.senderForCompiledFrame(X86Frame.java:342)
# ERROR: 	at sun.jvm.hotspot.runtime.x86.X86Frame.sender(X86Frame.java:283)
# ERROR: 	at sun.jvm.hotspot.runtime.Frame.sender(Frame.java:194)
# ERROR: 	at sun.jvm.hotspot.runtime.Frame.realSender(Frame.java:199)
# ERROR: 	at sun.jvm.hotspot.runtime.VFrame.sender(VFrame.java:119)
# ERROR: 	at sun.jvm.hotspot.runtime.CompiledVFrame.sender(CompiledVFrame.java:178)
# ERROR: 	at sun.jvm.hotspot.runtime.VFrame.javaSender(VFrame.java:146)
# ERROR: 	at sun.jvm.hotspot.jdi.ThreadReferenceImpl.privateFrames(ThreadReferenceImpl.java:218)
# ERROR: 	at sun.jvm.hotspot.jdi.ThreadReferenceImpl.frames(ThreadReferenceImpl.java:183)
...

Warning: the type "const char*" (declared in the remote VM in VMStructs::localHotSpotVMTypes) had its size declared as 4 twice. Continuing.
Warning: the type "const size_t" (declared in the remote VM in VMStructs::localHotSpotVMTypes) had its size declared as 4 twice. Continuing.
Warning: the type "const int" (declared in the remote VM in VMStructs::localHotSpotVMTypes) had its size declared as 4 twice. Continuing.
Warning: the type "const MemRegion" (declared in the remote VM in VMStructs::localHotSpotVMTypes) had its size declared as 8 twice. Continuing.
WARNING: You have disabled SA and VM version check. You may be using incompatible version of SA and you may see unexpected results.

Comments
EVALUATION

See main CR
2011-09-12 
EVALUATION

http://hg.openjdk.java.net/hsx/hotspot-main/hotspot/rev/7588156f5cf9
2011-09-08 
EVALUATION

http://hg.openjdk.java.net/hsx/hotspot-comp/hotspot/rev/7588156f5cf9
2011-09-06 
EVALUATION

7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
Reviewed-by: kvn

The SA was never updated to handle ricochet frames so stack walking
was broken when they were encountered.  The X86 stack walking code
hadn't been updated in a while so I sync'ed it the current version of
frame_x86.cpp and eliminated the AMD64 variants of many of these
classes since they should be exactly that same.  All SA related
exceptions in the mlvm test have been fixed.  I had to convert the
PcDesc flags into masks since the SA can't deal with bitfields.

Because of some JDI features being used by the test I had to fix other
unreported SAJDI issues when asking for locals for optimized and
native frames.  I also hit an unreported assertion failure in C1 with
large frames.

Tested with failing mlvm sajdi tests from report plus the regular
tmtools and sajdi test to stress the stack walking.
2011-09-06


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